Updated on 2025/06/30

Information

 

写真a

 
FUJIBAYASHI MEGUMU
 
Organization
Faculty of Engineering Department of Urban and Environmental Engineering Associate Professor
School of Engineering （Concurrent）
Graduate School of Engineering （Concurrent）
Title
Associate Professor
External link

Degree

  • Ph.D. (Engineering)

Research History

  • 2012.4～　東北大学（助教） 2015.9～　秋田県立大学（助教）   

Research Interests・Research Keywords

  • Research theme： Effects of DSi supply on the coastal ecosystems

    Keyword： EPA, diatom

    Research period： 2021.4

  • Research theme： Evaluation of aquatic ecosystem health by using fatty acid indicators.

    Keyword： EPA, fish, lake

    Research period： 2019.4

  • Research theme： Food webs in eutrophic lakes

    Keyword： Fatty acids biomarkers, Stable isotope ratios, Cyanobacteria, Fish

    Research period： 2016.6

Awards

  • 第23回論文賞

    2021.10   日本水処理生物学会   八郎湖に生息するシジミ類の秋季におけるろ過速度と酸素消費速度

  • Ecological Research Paper Award 2017

    2017.3   日本生態学会  

  • 建設工学研究奨励賞

    2013.5   一般財団法人建設工学研究振興会  

  • 優秀論文発表賞

    2013.2   韓国河川湖沼学会  

  • 国際交流奨励賞

    2012.12   日本陸水学会  

Papers

  • Oceanic anoxia in Panthalassa during the Early Triassic Smithian-Spathian transition

    Takahashi, S; Yamakita, S; Muto, S; Kojima, S; Kaiho, K; Yamasaki, S; Tsuchiya, N; Xiong, YJ; Poulton, SW; Wignall, PB; Matsumoto, H; Itai, T; Fujibayashi, M

    PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY   675   2025.10   （ ISSN:0031-0182 eISSN:1872-616X ）

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    Publisher：Palaeogeography Palaeoclimatology Palaeoecology  

    The Smithian–Spathian transition during the Early Triassic was associated with significant environmental change, including global warming and oceanic anoxia. However, understanding ocean redox conditions in the pelagic Panthalassa during this period has been challenging due to a lack of well-dated sedimentary sections. Here, we provide new geochemical data for a Smithian–Spathian succession from an accretionary complex of central Japan (Inuyama, Aichi Prefecture), which was deposited in a low-latitude abyssal location. Conodont index fossils and carbon isotope stratigraphy reveal that the studied sections span the middle Smithian to lowermost Spathian (Momotaro-Jinja lower section), and the middle part of the Spathian (Momotaro-Jinja upper section). The Smithian–Spathian boundary is placed within a thick (∼40 cm), organic-rich, black claystone layer in the lower part of the section. We reconstruct water column redox conditions using pyrite framboid size ranges, Fe speciation and redox sensitive trace elements. During the middle to late Smithian, we find that the water column changed from oxic to ferruginous anoxic, with a transition to euxinic during the latest Smithian to earliest Spathian. During the middle Spathian, the water column fluctuated between oxic and euxinic conditions. We suggest that late Smithian seawater warming contributed to deoxygenation of Panthalassa whilst surface productivity and organic matter fluxes were low, leading to non-sulfidic ferruginous anoxia. Productivity then increased during the latest Smithian to earliest Spathian, thereby stimulating microbial sulphate reduction and inducing widespread ocean euxinia.

    DOI： 10.1016/j.palaeo.2025.113080

    Web of Science

    Scopus

  • Benefits from removing fouling mussels in suspension oyster aquaculture: An evaluation using farm-scale carbon budget and bivalve growth models

    Sakamaki T., Hatakeyama Y., Saito H., Fujibayashi M., Hayashi S., Filgueira R.

    Aquaculture   605   2025.7   （ ISSN:00448486 ）

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    Publisher：Aquaculture  

    We propose a model-based approach to evaluate how effectively removing fouling mussels enhances the growth of cultivated oysters and reduces biodeposition, which could potentially lead to adverse effects on benthic environments in suspension farms. This approach links a simplified model estimating the budget of suspended particulate organic carbon (POC) in a farm with dynamic energy budget models that calculate the growth of cultivated oysters (Crassostrea gigas) and fouling mussels (Mytilus galloprovincialis). By simulating the effect of mussel removal using hot-water treatment conducted in an oyster farm in northeastern Japan, we estimated that treatment at the 12th month after the start of cultivation would increase the soft body weight of oysters harvested at the 18th month by 11 % compared to the no-treatment case. Mussel removal was also predicted to reduce the bivalves' biodeposition to 19 %. Further estimations across assumed wide ranges of background POC concentrations (up to 1.5 mg-C L−1) and fouling-mussel density on cultivated oysters (up to 100 individuals per oyster) indicated that mussel removal more effectively enhanced oyster growth (by over approximately 5 %) in intermediate POC concentrations (0.02 to 0.2 mg L−1) and relatively higher mussel densities (>10 individuals). The percentage of reduced biodeposition due to mussel removal was higher in relatively lower POC concentrations. The proposed models can predict the benefits of removing fouling mussels in oyster aquaculture—namely, increased oyster production and reduced environmental impact—considering site-specific conditions. These models can help determine the necessity of costly biofouling controls.

    DOI： 10.1016/j.aquaculture.2025.742531

    Scopus

  • Methyl-end desaturases determine the capability for de novo biosynthesis of polyunsaturated fatty acids in bivalves.

    Kabeya N, Ramos-Llorens M, Nakano Y, Gomes-Dos-Santos A, Teixeira A, Fujibayashi M, Haro JG, Navarro JC, Castro LFC, Haga Y, Monroig Ó

    Biochimica et biophysica acta. Molecular and cell biology of lipids   159617   2025.4   （ ISSN:1388-1981 ）

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    Language：English  

    DOI： 10.1016/j.bbalip.2025.159617

    PubMed

  • Application of a multi-wavelength excitation fluorometer and machine-learning algorithm for on-site measurement of long-chain polyunsaturated fatty acids in lakes

    Aoki, N; Fujibayashi, M; Sakamaki, T; Kuba, T

    LAKE AND RESERVOIR MANAGEMENT   41 ( 2 )   112 - 123   2025.4   （ ISSN:1040-2381 eISSN:2151-5530 ）

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    Publisher：Lake and Reservoir Management  

    Aoki N, Fujibayashi M, Sakamaki T, Kuba T. 2025. Application of a multi-wavelength excitation fluorometer and machine-learning algorithm for on-site measurement of long-chain polyunsaturated fatty acids in lakes. Lake Reserv Manage. XXX–XXX. Long-chain polyunsaturated fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are important indicators of the nutritional quality of diets for aquatic animals. Seston contributes the primary basal food source; therefore, monitoring the contents (absolute amount per mass or volume) and levels (mass percent of total fatty acids) of these fatty acids in seston is a rational strategy for lake and reservoir management to maintain ecosystem health. However, conventional methods for EPA and DHA analyses in seston are labor-intensive and complex. This study aimed to develop a simple approach for field measurement of EPA and DHA using a multi-wavelength excitation fluorometer (MEX), which was originally designed to estimate the Chl-a concentration derived from each phytoplankton class based on excitation spectra. We proposed that a model could be developed by incorporating machine learning to predict EPA and DHA from excitation spectra. Water samples (151) were collected from the Hokuzan Reservoir in Saga Prefecture. The excitation spectra for each water sample were obtained on-site by MEX, and the EPA and DHA in the seston were analyzed in the laboratory using conventional methods. Based on these data, predictive models were developed using an extra-tree regressor, the one of machine learning algorithms. The model achieved average R<sup>2</sup> values of 0.78, 0.74, 0.83, and 0.80 for EPA contents, DHA contents, EPA levels, and DHA levels, respectively. Consequently, using MEX enables novel and simple on-site measurements of EPA and DHA, further facilitating spatiotemporally dense data acquisition and potentially improving lake and reservoir ecosystem management.

    DOI： 10.1080/10402381.2025.2488828

    Web of Science

    Scopus

  • Innovative potassium hexacyanoferrate intercalated into layered double hydroxide adsorbent for efficient cesium removal from seawater

    Khandaker, S; Fujibayashi, M; Kuba, T

    SEPARATION AND PURIFICATION TECHNOLOGY   354   2025.2   （ ISSN:1383-5866 eISSN:1873-3794 ）

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    Publisher：Separation and Purification Technology  

    Effective radioactive wastewater treatment technology is essential to ensure the sustainable development of nuclear energy. Here, the potassium ferrocyanide (HCF) intercalating with layered double hydroxide (LDH) (HCF@LDH) was successfully synthesized by coprecipitation method for selective cesium (Cs) removal from seawater. Characteristics of the adsorbent, and adsorption performance under different environmental conditions including Cs+ ion selectivity, and underlying adsorption mechanism were systematically investigated. The experimental results demonstrated that the adsorption capacity of HCF@LDH was 52.08 mg/g and it effectively removed 100 % of Cs+ from up to 200 mg/L Cs solution within 1 h under an optimal pH of 6.0–10.0. Moreover, the adsorbent displayed high selectivity towards Cs+ even in seawater and more than 90 % of Cs+ was removed from seawater and the highest cesium removal capacity from seawater was 44.64 mg/g. Both the Langmuir isotherm model (R2 = 0.997) and the pseudo-second-order kinetic model (R2 = 0.999) provided a good fit for the adsorption data signifying the adsorption process is homogeneous and formed monolayer through chemisorption. Furthermore, the reusability analysis exhibited this adsorbent was recycled and reused for at least 5 cycles without losing its original adsorption performance. The physicochemical analysis of the HCF@LDH proved that K4Fe (CN)6 successfully intercalated onto LDH and cation exchange between K+ and Cs+ played an important role in effective Cs adsorption. More specifically, the interstitial spaces of the hexacyanoferrate crystals facilitate the cation exchange process. The findings of this study demonstrate that HCF@LDH is a unique, highly effective, and selective adsorbent for Cs+ from complex seawater.

    DOI： 10.1016/j.seppur.2024.128984

    Web of Science

    Scopus

  • Presence of mucilage and low omega-3 fatty acid contents in phytoplankton impair the quality of phytoplankton diet for zooplankton

    Ichise, S; Fujibayashi, M

    FOOD WEBS   41   2024.12   （ ISSN:2352-2496 ）

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    Publisher：Food Webs  

    Phytoplankton are a crucial basal dietary source for consumers in lake ecosystems. The dietary quality of phytoplankton for zooplankton has been investigated in terms of molecules (e.g., fatty acids) and stoichiometry. However, little is known on the effects of algal mucilage on the dietary quality of phytoplankton. Therefore, this study aimed to investigate the effects of mucilage and fatty acid contents in phytoplankton on dietary quality. Zooplankton (Daphnia pulicaria) were reared with a single species of phytoplankton as the diet. Eighteen phytoplankton types were used. Algal dietary quality was evaluated based on the growth, reproduction, and survival rates of D. pulicaria for each dietary algal species during the feeding experiments. The results demonstrated that the dietary quality of phytoplankton with mucilage decreased significantly among the green algae. Green algae without mucilage had high omega-3 fatty acid contents, which increased its dietary quality. The quality of cyanobacteria diet was low for D. pulicaria regardless of the absence or presence of mucilage and fatty acid contents. The results show that the presence of mucilage may have reduced ingestion and digestion by zooplankton and indicate that this algal succession will have a negative impact on lake ecosystems.

    DOI： 10.1016/j.fooweb.2024.e00369

    Web of Science

    Scopus

  • Testing combined effects of environmental trace metals/arsenic and marine trophic status on the bioaccumulation in Pacific oysters: Insights from 22-site field samplings

    Wang, ZC; Akimoto, T; Yue, TT; Hatakeyama, Y; Maruo, C; Pascual, G; Fujibayashi, M; Sakamaki, T

    MARINE POLLUTION BULLETIN   207   116827   2024.10   （ ISSN:0025-326X eISSN:1879-3363 ）

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    Language：English   Publisher：Marine Pollution Bulletin  

    Pacific oysters were sampled from 22 human-impacted sites in northeastern Japan to measure Cr, Cu, Zn, Pb, Cd, and As. The hazard quotient was slightly >1 for Cu and/or As at two sites, but <1 for all metal species and As at the other sites, indicating low human health risks. Oysters' Cu, Zn, and Pb contents were positively related to their concentrations in the sediment, while Cr and As were not. Oysters' Cu and Zn were negatively related to the inorganic nitrogen in seawater, while oysters' Pb and As showed positive relationships with the particulate organic carbon. These findings suggest that marine trophic status affects oysters' metal uptake differently among the metal species. Furthermore, oysters' Cr, Cu, Zn, and Pb contents were negatively related to their eicosapentaenoic acid content and condition index. Therefore, the nutritional conditions of oysters may influence their elimination or accumulation of these metals.

    DOI： 10.1016/j.marpolbul.2024.116827

    Web of Science

    Scopus

    PubMed

  • Dual benefits of biofouling reduction in non-fed aquaculture: On-site heat treatment enhances oyster production and mitigates local environmental impacts

    Hatakeyama, Y; Fujibayashi, M; Maruo, C; Nishimura, O; Sakamaki, T

    JOURNAL OF CLEANER PRODUCTION   472   2024.9   （ ISSN:0959-6526 eISSN:1879-1786 ）

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    Publisher：Journal of Cleaner Production  

    We experimentally evaluated the biofouling reduction by on-site heat treatment in enhancing oyster aquaculture production and mitigating its environmental impacts. Specifically, we compared oyster growth, settling flux of particulate organic matter (POM), and its oxygen consumption rate (OCR) between heat-treated (HT) and non-treated (N) sections within suspension oyster farms in a temperate bay. HT demonstrated a substantial reduction of 81–99% in fouling mussel biomass and approximately 20–30% increases in cultivated oysters’ growth and condition index. The settling flux of POM was 10–57% smaller in HT mainly due to the reduction in biodeposition from fouling mussels. However, OCR of settling POM at a unit mass was 6–62% higher in HT than in N; overall, the short-term oxygen consumption by settling POM did not significantly differ between HT and N. The increase in OCR of settling POM in HT may be attributable to the decrease in biodeposits from fouling organisms and increase in the relative contribution of fresh POM entering from unfarmed areas. Meanwhile, from the longer-term perspective, the substantial reduction in settling POM by the heat treatment lower the potential for oxygen consumption in the bottom layers over the half-year farming operation by 31%. In conclusion, on-site heat treatment is a simple tactic for controlling nutrient and POM flows at production sites, simultaneously enhancing oyster production and mitigating the local environmental impact of non-fed oyster aquaculture. Furthermore, this approach exemplifies an effective tactic to enhance the sustainability of primary food production processes.

    DOI： 10.1016/j.jclepro.2024.143502

    Web of Science

    Scopus

  • Biological Mn(II) oxidation under organic substrate-limited conditions and its application in mine drainage remediation Invited Reviewed International journal

    Naoyuki Miyata, Reina Suganuma, Kimihito Sunouchi, Kunihiro Okano, Shigeshi Fuchida, Miho Watanabe, Megumu Fujibayashi, Yuya Sato, Chiharu Tokoro

    Biochemical Engineering Journal   203   2024.3

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Nitrogen subsidies to pelagic food webs through profundal methane-oxidising bacteria in oligotrophic fresh water Reviewed International journal

    Erica Silk P. dela Paz, Noboru Okuda, Pei-Chi Ho, Fan-Sian Lin, Chih-hao Hsieh, Chao-Chen Lai, Megumu Fujibayash, Fuh-Kwo Shiah, Chia-Ying Ko

    Freshwater Biology   2024.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： https://doi.org/10.1111/fwb.14238

  • 今津干潟への溶存態ケイ素供給量に対するダムおよび下水処理場の影響 Reviewed

    有馬 悠祐, 藤林 恵, 岡本 蓮矢, 清野 聡子, 久場 隆広

    土木学会論文集   79   2023.11

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Exploring the use of fish as indicators of eicosapentaenoic and docosahexaenoic supply in lake ecosystems Reviewed International journal

    Megumu Fujibayashi, Mayumi Nitta, Sota Aomori, Takashi Sakamaki, Kunihiro Okano, Hideki Sugiyama, Naoyuki Miyata

    Oecologia   202   743 - 755   2023.8

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    Language：English   Publishing type：Research paper (scientific journal)  

  • 脂肪酸を用いた水圏生態系の食物網解析

    FUJIBAYASHI Megumu

    環境管理   52   9 - 16   2023.7   （ ISSN:13443917 ）

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    Language：Japanese   Publisher：九州環境管理協会  

    食物連鎖は生態系の物質循環を駆動する主要な機構の一つである．食物網とは，生態系内の食物連鎖を総合的にあらわしたものであり，食物網の理解は生態系保全や管理に有用である．ある脂肪酸は生物分類群ごとに固有，あるいは特異的に多く含まれ，その脂肪酸は食物連鎖を介して高次の動物に移動しても保存性が高く，トレーサーとして利用可能である．例えば，秋田県八郎湖ではアオコの発生する夏季に，様々な魚類中のリノレン酸やリノール酸含有率が増加する．これらの脂肪酸は，アオコを形成する藍藻類に多く含まれる脂肪酸であることから，八郎湖において藍藻が餌源として食物網に組み込まれていることが分かる．従来利用されてきた冑内容物や安定同位体比などの手法と組み合わせながら活用することで，水圏生態系の食物網の理解が深化すると期待される．

    CiNii Research

  • Effects of algal extracellular polysaccharides on the formation of filamentous manganese oxide particles in the near-bottom layer of Lake Biwa Reviewed International journal

    Seiko Furuta, Hisato Ikegaya, Megumu Fujibayashi, Hideki Hashimoto, Shiro Suzuki, Kunihiro Okano, Satoshi Ichise, Naoyuki Miyata

    Microorganisms   11 ( 7 )   2023.7

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Marine deoxygenation driven by the Early Triassic global warming and subsequent climate cooling

    Takahashi Satoshi, Yamakita Satoshi, Muto Shun, Kojima Satoru, Kaiho Kunio, Yamasaki Shin-ichi, Tsuchiya Norimichi, Xiong Yijun, Poulton Simon W., Wignall Paul B., Matsumoto Hironao, Itai Takaaki, Fujibayashi Megumu

    Annual Meeting of the Geological Society of Japan   2023 ( 0 )   163   2023   （ ISSN:13483935 eISSN:21876665 ）

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    Language：Japanese   Publisher：The Geological Society of Japan  

    <p>前期三畳紀のスミシアンとスパシアンの境界期は，ペルム紀末大量絶滅事変後の回復期において環境悪化が顕著に起きた時期であり，火山活動の増加 (Saito et al., 2023)，海水温の上昇 (Sun et al., 2012), 海洋の酸化還元環境の変化 (Song et al., 2016) が主に古テチス海から報告されている．本発表では，低緯度パンサラッサ海遠洋域深海のスミシアンとスパシアンの層序と溶存酸素環境の記録を示す．さらに，古テチス海の表面海水温記録と比較して，この極端温暖期とその直後の海洋酸化還元構造に関して議論する．　本研究が対象としたのは，愛知県犬山地域に露出する美濃帯の桃太郎神社セクションである．このセクションは，山北ほか（2010, 2016）などによって地質構造とコノドント化石年代が明らかにされ，スミシアン後期からスミシアン—スパシアン境界までの範囲とスパシアン中期の連続層序の存在が明らかにされてきた．これらの層序に沿って有機炭素同位体比の変化を示すと，スミシアン—スパシアン境界期付近の厚さ30−40 cmの黒色粘土岩層中に顕著な増加が見出され，これはこの時代境界期に見られる炭素同位体比の正異常（P3；Song et al., 2014）に対比される．低緯度古テチス海浅海域から報告されたコノドントの酸素同位体比のデータによると，この炭素同位体比の正異常を境にそれまで高温であった表層海水温（38—40℃程度）が約80万年後までに4℃程度低下したことが示されている（Sun et al., 2012）．　桃太郎神社セクションから採取したサンプルを基に，主要元素・微量元素組成，鉄化学種の分析，および黄鉄鉱の観察を行い，古環境記録の検討を行った．スミシアン期中期から後期にかけては，鉄化学種の記録が海洋無酸素化の傾向を示すようになり還元的な環境への変化を示すが，モリブデンなどの酸化還元鋭敏元素の増加が顕著ではない．したがって，強い還元状態である硫化水素環境の発生までは起こらなかったことを示唆する．スミシアン—スパシアン境界期近傍の黒色粘土岩層は，鉄化学種，モリブデン，粒径の小さいフランボイド黄鉄鉱の証拠から無酸素環境の発達が示される．ただし，ウランの増加が大きくないため，無酸素海水の発達は深層水では起きておらず，中層水において酸素極小層が存在した可能性が高い．この無酸素中層水の発達の後，スパシアン中期には酸化的な海洋環境に変化したことが各酸化還元環境指標から示される．　このパンサラッサ海遠洋域の酸化還元環境記録とSong et al. (2019）による古テチス海浅海域の海洋鉛直構造のモデルを統合することにより、同時の低緯度海洋の酸化還元水塊の変動を以下のように推定した．スミシアンの中期から後期の時期には無酸素・硫化水素環境までには及ばない貧酸素環境であった．当時の海洋表層水の高温化を起点に海洋が成層化し表層生物生産が停滞するような貧酸素化が起きた．その後のスミシアン—スパシアン境界期においては無酸素・硫化水素環境が浅海域と遠洋域の両方で起きており，表層水温の低下などによって海洋の鉛直混合が進み表層の生産性が増加，海洋の有光域深度における酸素消費（無酸素化）や有機物沈降フラックスの増加による硫化水素の発生が顕著に起きた．このような極端温暖化と直後の寒冷化に駆動された海洋無酸素化が，ペルム紀末の大量絶滅事変後の動物多様性回復の遅れを招いたと推定する．文献：Saito et al., 2023, Ear. Planet. Sci. Lett. 614, 118194. Song et al., 2014, Geochim. Cosmochim. Acta 128, 95–113. Song et al., 2019, Earth-Science Rev. 195, 133–146. Sun et al., 2012, Science 338, 366–70. 山北ほか, 2010 日本古生物学会 C23, 47. 山北ほか 2016, 日本古生物学会B13, 31.</p>

    DOI： 10.14863/geosocabst.2023.0_163

    CiNii Research

  • Influence of reservoir and sewage treatment plant on dissolved silicon supply to Imazu tidal flat

    ARIMA Yusuke, FUJIBAYASHI Megumu, OKAMOTO Renya, SEINO Satoquo, KUBA Takahiro

    Japanese Journal of JSCE   79 ( 25 )   n/a   2023   （ eISSN:24366021 ）

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    Language：Japanese   Publisher：Japan Society of Civil Engineers  

    <p> Diatoms play the main role as primary producer, in tidal flat ecosystems, which have high biological production. Diatoms requires silicon as essential nutrient. Since diatoms in tidal flats mainly obtain dissolved silicon (DSi) loading from a river, it is important to accumurate information about DSi dynamics. In this study, we conducted fieldworks on the basin of Zuibaiji river and evaluated the DSi supply into Imazu tital flat(S0), DSi traping or supply by a reservoir and a sewage treatment plant(T1, S1, respectively). S0 and T1 were estimated as 10.4 ton, and 0.57 ton in December 2022, respectively. It is considered that diatom production and sedimentation to bottom layer in the reservoir was main factor for DSi traping. S1 was also estimated that 2.7 ton of DSi were supplied in December 2022. It is indicated that the reservoirs and the sewage treatment plants have non-regligible influence to DSi supply into tital flats.</p>

    DOI： 10.2208/jscejj.23-25010

    CiNii Research

  • Effect of the substrate surface and nutrient adsorption and elution on the growth of benthic diatom Nitzschia palea. Reviewed International journal

    Watanabe, S., Matsunami, N., Okuma, I., Naythen, P. T., Fujibayashi, M., Iseri, Y., Hao, A., Kuba, T.

    Ecological Engineering   183   e106743   2022.10

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Identification of aquatic consumer trophic pathways in four volcanic tropical lakes using fatty acid biomarkers Reviewed International journal

    Justine R. de Leon, Megumu Fujibayashi, Frances Mikayla Petilla, Bon Ivan Yumul, Milette U. Mendoza-Pascual, Rey Donne S. Papa, Noboru Okuda

    Journal of Limnology   71   166 - 178   2022.7

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Effects of spatial scale on assessments of suspension bivalve aquaculture for productivity and environmental impacts Reviewed International journal

    Takashi Sakamaki, Yizhe Zheng, Yuji Hatakeyama, Megumu Fujibayashi, Osamu Nishimura

    Aquaculture   553   738082   2022.5

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Blue light irradiation increases the relative abundance of the diatom Nitzschia palea in co-culture with cyanobacterium Microcystis aeruginosa

    Watanabe Shunsuke, Matsunami Naoki, Okuma Ikki, Podiapen Tannen Naythen, Fujibayashi Megumu, Iseri Yasushi, Hao Aimin, Kuba Takahiro

    Water Environment Research   94 ( 4 )   e10707   2022.3   （ eISSN:15547531 ）

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    Language：English   Publisher：John Wiley & Sons  

    Lake eutrophication is associated with cyanobacterial blooms. The pennate diatom Nitzschia palea (N. palea) inhibits the growth of the cyanobacterium Microcystis aeruginosa (M. aeruginosa); therefore, increasing the relative abundance of N. palea may contribute to the inhibition of Microcystis blooms. Several studies have demonstrated that blue light irradiation promotes diatom growth and inhibits cyanobacterial growth. In this study, we evaluated the effects of blue light irradiation on N. palea and M. aeruginosa abundance. Monocultures and co-cultures of N. palea and M. aeruginosa were exposed to blue light and fluorescent light at 32 μmol photons m^-2 s^-1. The relative abundance of N. palea under fluorescent light decreased gradually, whereas the abundance under blue light was relatively higher (approximately 74% and 98% under fluorescent light and blue light, respectively, at the end of the experiment). The inhibition efficiency of blue light on the growth rate of M. aeruginosa was related to the light intensity. The optimal light intensity was considered 20 μmol photons m^-2 s^-1 based on the inhibition efficiency of 100%. Blue light irradiation can be used to increase the abundance of N. palea to control Microcystis blooms.

    CiNii Research

  • Volcanic temperature changes modulated volatile release and climate fluctuations at the end-Triassic mass extinction

    Kaiho K., Tanaka D., Richoz S., Jones D.S., Saito R., Kameyama D., Ikeda M., Takahashi S., Aftabuzzaman M., Fujibayashi M.

    Earth and Planetary Science Letters   579   2022.2   （ ISSN:0012821X ）

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    Publisher：Earth and Planetary Science Letters  

    Emplacement of the Central Atlantic Magmatic Province (CAMP) is thought to have triggered global environmental changes and the end-Triassic mass extinction (ETE). However, the mechanisms linking volcanism and environmental change are unclear. Here we provide new insight into these linkages by measuring the abundance of both sedimentary five- to six-ring polycyclic aromatic hydrocarbons (PAHs) and mercury from strata deposited in shallow marine environments across the ETE at the GSSP Kuhjoch section in Austria and St. Audrie's Bay section in the UK. To contextualize these data, we report results from laboratory experiments measuring the production of SO2 and CO2 during heating of limestone and mudstone. ETE sediments record parallel enrichments of mercury and five- to six-ring PAHs, which could have been produced by intrusive magma (mainly sills) and lava flows during the early stage of the CAMP emplacement; these data indicate a direct link between massive gas emission from sill contact metamorphism and the ETE. The fraction of coronene – a highly condensed six-ring PAH that requires greater energy to form compared to smaller PAHs – accumulated in the sediments during these initial volcanic events is low, and it coincides with the terrestrial plant turnover and initial marine extinction. Coronene increases to medium values coinciding with the final marine extinction level. Our heating experiments of typical carbonate and mudstone materials show that relatively low temperature heating (>350 °C) by sills releases massive amounts of SO2 on a 100 yr time scale, whereas higher temperature heating (500–600 °C) forms more CO2 on the same time scale. The combination of our end-Triassic geochemical data and laboratory results implies that low heating by sills caused SO2-dominated gas emission to the stratosphere and low CO2 emission, inducing global cooling that could have precipitated the mass extinction. The subsequent increase in coronene content indicates higher volcanic temperature that would have volatilized CO2 rich gas; the consequence was a switch to greater CO2 release and long-term (>105 yr) global warming.

    DOI： 10.1016/j.epsl.2021.117364

    Scopus

  • Identification of aquatic consumer trophic pathways in four volcanic tropical lakes using fatty acid biomarkers

    de Leon J.R., Fujibayashi M., Petilla F.M., Yumul B.I., Mendoza-Pascual M.U., Papa R.D.S., Okuda N.

    Journal of Limnology   81   2022   （ ISSN:11295767 ）

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    Publisher：Journal of Limnology  

    Food web studies rely heavily on the use of traditional gut content analysis or the fairly popular stable isotope analysis rather than fatty acid analysis (FAA) despite its straightforward process, and ability to identify and characterize more diverse trophic pathways. In this study, we employed fatty acid (FA) biomarkers as a preliminary attempt to trace and characterize trophic pathways in food webs of four tropical lakes of volcanic origin in Luzon Island, Philippines - three clustered maar lakes (Yambo, Pandin and Calibato) and a large caldera lake (Taal). These lakes have a long history of human disturbance but limited ecological data. Knowledge of basal food sources and existing trophic dynamics of organisms are generally non-existent. Particulate organic matter (POM), zooplankton, and fish species were collected in August 2019 from the study lakes as representative of three trophic guilds. Non-metric multidimensional scaling (NMDS) and principal component analysis (PCA) were conducted to analyse FA profiles and characterize trophic relationships between representative organisms. For the POM, within lakes comparison of taxon-specific FA profiles showed a significant difference between the surface and near bottom depths, with the former dominated by photoautorophs and the latter by chemotrophs, suggesting the ability of FAA to effectively delineate between micro-organisms. Between lakes comparison also showed significant difference between the caldera and maar lakes, with the latter containing higher composition of bacterial FA, reminiscent of the considerably smaller lakes’ response to the impact of unmitigated organic loadings from anthropogenic activities. Taken together with the primary consumers’ FA profiles, analysis confirmed the ability of FAA to discriminate between FA profile sources. PCA explained >70% of the variance in the FA compositions for three trophic guilds in the two deepest lakes, which delineated both zooplankton and fish species food selectivity in each lake, alluding to FAA’s capacity to characterize dietary reliance of various species in an environment with numerous food sources. Although certain limitations were encountered, such as the specificity of the sampling depths for POM, and the small sample size of the representative species of the third trophic level, this study demonstrated the effectiveness of FAA as a powerful ecological tool for disentangling intricate lake food webs comprising various food sources. Overall, this study provided baseline information on basal food sources and trophic pathways of representative organisms from four tropical lakes. Taken together, FAA studies have wide application in understanding food webs, including anthropogenically-threatened lake ecosystems.

    DOI： 10.4081/JLIMNOL.2022.2070

    Scopus

  • Effects of temperature and pH on the competition between diatom <i>Nitzschia palea</i> and cyanobacterium <i>Microcystis aeruginosa</i>

    WATANABE Shunsuke, OOKUMA Ikki, PODIAPEN Tannen Naythen, FUJIBAYASHI Megumu, ISERI Yasushi, HAO Aimin, KUBA Takahiro

    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)   78 ( 7 )   III_95 - III_101   2022   （ eISSN:21856648 ）

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    Language：Japanese   Publisher：Japan Society of Civil Engineers  

    <p> This study is investigated to the competition between cyanobacterium <i>Microcystis aeruginosa</i> and diatom <i>Nitzschia palea</i> that can increase their cell number in a favorable environment for the occurrence of water bloom. We particularly focused on the temperature and pH effects on the inhibition effects of <i>M. aeruginosa</i> by <i>N. palea</i>. The maximum cell yield of <i>M. aeruginosa</i> reduced by approximately 50 % in the co-culture with <i>N. palea</i> at 15–30 ℃ as compared to that in the monoculture. <i>N. palea</i> also reduced the maximum cell yield of <i>M. aeruginosa</i> by 33, 54 and 66 % at pH 7.0, 8.0 and 9.0, respectively. <i>N. palea</i> reduced <i>M. aeruginosa</i> growth in the culture condition where water bloom is likely to occur. However, <i>M. aeruginosa</i> remained the dominant species in co-culture at 20–30 ℃ or pH 7.0–8.0. It is necessary to artificially increase the relative abundance of <i>N. palea</i> for enhancing the inhibition effect of <i>M. aeruginosa</i>.</p>

    DOI： 10.2208/jscejer.78.7_iii_95

    CiNii Research

  • Hydrodynamic-Driven Changes in the Source and Composition of Sedimentary Organic Matter via Grain Size Distribution in Shallow Lakes Reviewed International journal

    Xiaoguang Xu, Ruijie Shi, Chengxu Lv, Huazu Liu, Wei Yang, Shenhua Qian, Megumu Fujibayashi, Yue Zhi, Guoxiang Wang, Munehiro Nomura, Osamu Nishimura, Wei Li

    JGR Biogeosciences   126   e2021JG006502   2021.11

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  • The negative relationship between fouling organisms and the content of eicosapentaenoic acid and decosahexaenoic acid in cultivated Pacific oysters, Crassostrea gigas Reviewed International journal

    Megumu Fujibayashi, Osamu Nishimura, Takashi Sakamaki

    Marine Drugs   19   369   2021.6

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  • 賦活化木炭のCs吸着能とその焼却時の減容化率及びCs回収率について Reviewed

    山田悠斗、藤川勇太、石田直也、豊原悠作、藤林 恵、久場隆広

    環境放射能除染学会誌   9   69 - 76   2021.6

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Sources and oxygen consumption of particulate organic matter settling in oyster aquaculture farms: insights from analysis of fatty acid composition Reviewed International journal

    Yuji Hatakeyama, Tatsuya Kawahata, Megumu Fujibayashi, Osamu Nishimura, Takashi Sakamaki

    Estuarine, Coastal and Shelf Science   254   107328   2021.6

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  • Coronene, mercury, and biomarker data support a link between extinction magnitude and volcanic intensity in the Late Devonian Reviewed International journal

    Kunio Kaiho, Mami Miura, Mio Tezuka, Naohiro Hayashi, David S. Jones, Kazuma Oikawa, Jean-Georges Casier, Megumu Fujibayashi, Zhong-Qiang Chen

    Global and Planetary Change   199   103452   2021.4

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  • 大気圧非平衡プラズマ賦活処理が活性炭及び竹炭のCs吸着能に及ぼす影響 Reviewed

    藤川 勇太、山田 悠斗、石田 直也、豊原 悠作、藤林 恵、久場 隆広

    環境放射能除染学会誌   9   17 - 23   2021.4

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  • Assimilation of cyanobacteria by the freshwater bivalve Nodularia douglasiae: Insights from long-term laboratory and field feeding experiment Reviewed International journal

    Kotaro Sugawara, Megumu Fujibayashi, Kunihiro Okano, Yukio Enda, Shintaro Ichinoseki, Yoshimitsu Taniguchi, Naoyuki Miyata

    Journal of Water and Environment Technology   19   74 - 84   2021.4

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  • Dominance of harmful algae, Microcystis spp. and Micrasterias hardyi, has negative consequences for bivalves in a freshwater lake Reviewed International journal

    Megumu Fujibayashi, Seiko Furuta, Eiso Inoue, Satoshi Ichise, Naoko Takei

    Harmful Algae   101   101967   2021.1

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  • 応用生態工学的アオコ対策に向けた珪藻 Nitzschia paleaの至適増殖条件の検討 Reviewed

    渡邉俊介、大隈一輝、PODIAPEN Tannen Naythen、藤林恵、井芹寧、郝愛民、久場隆広

    土木学会論文集G   76   Ⅲ_367 - Ⅲ_373   2020.11

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  • 八郎湖におけるワカサギのゾウミジンコに対する捕食の有無と選択性の評価 Reviewed

    新田真弓、藤林恵、青森壮汰、岡野邦宏、宮田直幸

    土木学会論文集G   76   Ⅲ1 - Ⅲ9   2020.11

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  • 湖沼におけるろ過浄化機能を有するイシガイ科二枚貝の定着化による環境再生保全 Reviewed

    田中仁志、西尾正輝、藤林恵、田中大祐

    用水と廃水   ( 62 )   64 - 70   2020.10

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  • Effects of restoration of emergent macrophytes on the benthic environment of the littoral zone of a eutrophic lake Reviewed International journal

    Megumu Fujibayashi, Fumiaki Takakai, Shuhei Masuda, Kunihiro Okano, Naoyuki Miyata

    Ecological Engineering   155   2020.8

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  • Effects of oyster age on selective filter-feeding and chemical composition of biodeposits: an insight from fatty acid analysis Reviewed International journal

    Takashi Sakamaki, Kyohei Hayashi, Yizhe Zheng, Megumu Fujibayashi, Osamu Nishimura

    Marine Ecology Progress Series   644   75 - 89   2020.6

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  • 秋田県八郎湖における二枚貝イシガイと生息環境の相互関係

    藤林恵、吉田亨、岡野邦宏、宮田直幸

    八郎湖流域管理研究   ( 5 )   1 - 6   2020.3

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  • 水田生態系における底質の必須脂肪酸組成と出現底生動物科数の関係 Reviewed

    長田祐輝、藤林恵、丸尾知佳子、高橋真司、田中伸幸、西村修

    水環境学会誌   43   17 - 23   2020.1

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  • 志津川湾の湾奥河口部と湾中部における動物群集のトロフィックマーカー組成の比較 Reviewed

    野中健太郎、藤林恵、松野匠、西村修、坂巻隆史

    土木学会論文集G   75   Ⅲ255 - Ⅲ264   2019.12

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  • Spatial and seasonal variability of sedimentary organic matter and its origin in an algal-blooming eutrophic lake Invited Reviewed International journal

    Megumu Fujibayashi, Maoko Ashino, Kunihiro Okano, Naoyuki Miyata

    Ecological Indicators   107   105557   2019.12

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  • 富栄養湖沼における若年個体が少ないイシガイ個体群の再生産状況 Reviewed

    吉田亨、藤林恵、田中仁志、岡野邦宏、高田芳博、宮田直幸

    土木学会論文集G   75   Ⅲ265 - Ⅲ272   2019.12

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  • 脂肪酸組成を指標とした小型甲殻類のアオコ形成藍藻類に対する餌利用評価 Reviewed

    青森壮汰、藤林恵、岡野邦宏、高田芳博、宮田直幸

    土木学会論文集G   75   Ⅲ367 - Ⅲ374   2019.12

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  • 脂肪酸組成分析を利用した内湾の一次生産に及ぼす湾外起源水混合の影響評価 Reviewed

    大原光司、湯上洋平、藤林恵、西村修、坂巻隆史

    土木学会論文集G   75   Ⅲ375 - Ⅲ384   2019.12

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  • Origin of carbon and essential fatty acids in higher trophic level fish in headwater stream food webs Invited Reviewed International journal

    Megumu Fujibayashi, Yoshie Miura, Reina Suganuma, Shinji Takahashi, Takashi Sakamaki, Naoyuki Miyata, So Kazama

    Biomolecules   9 ( 9 )   487(1-13)   2019.9

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  • 八郎湖に生息するシジミ類の秋季におけるろ過速度と酸素消費速度 Invited Reviewed International journal

    藤林恵、珍田尚俊、宮田直幸

    水処理生物学会誌   55   59 - 65   2019.9

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  • Effect of sedimentary organic matter on species richness of deposit feeders in enclosed bay ecosystems: Insight from fatty acid nutritional indicators Reviewed International journal

    Megumu Fujibayashi, Takashi Sakamaki, Osamu Nishimura

    MARINE ENVIRONMENTAL RESEARCH   149   1 - 6   2019.8

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    DOI： 10.1016/j.marenvres.2019.05.011

  • 富栄養化湖沼の浅い沿岸域における藍藻類の日周鉛直移動と栄養塩動態の関係 Invited Reviewed International journal

    菅原巧太朗、藤林恵、遠田幸生、荒木美穂、岡野邦宏、宮田直幸

    水処理生物学会誌   55   49 - 57   2019.6

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  • Approach deliberation for source identification of sedimentary organic matters via comparing freshwater lakes with multi-ecotypes Invited Reviewed International journal

    Xiaoguang Xu, Wei Li, Hui Den, Megumu Fujibayashi, Munehiro Nomura, Osamu Nishimura, Guoxiang Wang

    SCIENCE OF THE TOTAL ENVIRONMENT   649   327 - 334   2019.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.scitotenv.2018.08.236

  • Transfer of cyanobacterial carbon to a higher trophic-level fish community in a eutrophic lake food web: fatty acid and stable isotope analyses Reviewed International journal

    Megumu Fujibayashi, Kunihiro Okano, Yoshihiro Takada, Hitoshi Mizutani, Noriko Uchida, Osamu Nishimura, Naoyuki Miyata

    OECOLOGIA   188 ( 3 )   901 - 912   2018.11

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s00442-018-4257-5

  • 脂肪酸組成分析を利用した内湾一次生産の制限因子の評価 Invited Reviewed International journal

    大原光司、湯上洋平、川畑達矢、藤林恵、西村修

    土木学会論文集G   74   III_53 - III_61   2018.10

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  • Cyanobacterial carbon transfer to higher trophic level in eutrophic lake Taihu Reviewed International journal

    CAO Xian, FUJIBAYASHI Megumu, NISHIMURA Osamu, SAKAMAKI Takashi, NOMURA Munehiro

    Proceeding of 17th World Lake Conference   333 - 335   2018.10

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    Language：Japanese   Publishing type：Research paper (international conference proceedings)  

  • Dietary utilization of cyanobacteria by fish communities in Lake Hachiro Reviewed International journal

    Megumu Fujibayashi, Sota Aomori, Yoshihiro Takada, Kunihiro Okano, Hitoshi Mizutani, Naoyuki Miyata

    Proceeding of 17th World Lake Conference   2018.10

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  • 海水中粒状有機物の化学組成と酸素消費に及ぼすカキ養殖場の影響 Invited Reviewed

    川畑達矢、藤林恵、湯上洋平、西村修、坂巻隆史

    土木学会論文集G   74   III_63 - III_71   2018.10

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  • 産業廃棄物処分場における有害物質の適正管理およびリスク削減対策に関する基盤的研究 Invited Reviewed

    木口倫，宮田直幸，石川祐一，岡野邦宏，阿部誠，金澤伸浩，藤林恵，堀江好文，小林貴司

    秋田県立大学ウェブジャーナルB   5   59 - 72   2018.9

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  • Characteristics of harmful algal blooms during a low water temperature season in Lake Hachiro Invited Reviewed International journal

    Araki, M., Okano, K., Ohta, S., Suzuki, E., Fujibayashi, M., Miyata, N

    Journal of Water and Environment Technology   16   175 - 183   2018.8

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  • 秋田県八郎湖で採取した底質からの藍藻回帰に及ぼす低温処理と培養温度の影響 Invited Reviewed International journal

    荒木美穂、岡野邦宏、藤林恵、宮田直幸

    水処理生物学会誌   54   55 - 63   2018.6

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  • Nutritional quality of fish faeces is enhanced by highly unsaturated fatty acid-producing heterotrophic protozoa Invited Reviewed International journal

    Megumu Fujibayashi, Nobuyuki Tanaka, Shun Hashido, Aya Takasawa, Osamu Nishimura

    ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY   89   21 - 26   2018.5

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    DOI： 10.1016/j.actao.2018.04.003

  • Integrating isotopic, microbial, and modeling approaches to understand methane dynamics in a frequently disturbed deep reservoir in Taiwan Invited Reviewed International journal

    Masayuki Itoh, Hisaya Kojima, Pei-Chi Ho, Chun-Wei Chang, Tzong-Yueh Chen, Silver Sung-Yun Hsiao, Yuki Kobayashi, Megumu Fujibayashi, Shuh-Ji Kao, Chih-hao Hsieh, Manabu Fukui, Noboru Okuda, Takeshi Miki, Fuh-Kwo Shiah

    ECOLOGICAL RESEARCH   32 ( 6 )   861 - 871   2017.11

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    DOI： 10.1007/s11284-017-1502-z

  • ハスの長期分解実験による粒状有機物の残存割合の評価及び底質への堆積傾向 Invited Reviewed

    野村 宗弘，千葉 高之，藤林 恵，西村 修

    土木学会論文集G   73   III_241 - III_246   2017.10

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  • Tentative identification of diagenetic products of cyclic biphytanes in sedimentary rocks from the uppermost Permian and Lower Triassic Invited Reviewed International journal

    Ryosuke Saito, Kunio Kaiho, Masahiro Oba, Jinnan Tong, Zhong-Qiang Chen, Li Tian, Satoshi Takahashi, Megumu, Fujibayashi

    ORGANIC GEOCHEMISTRY   111   144 - 153   2017.9

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    DOI： 10.1016/j.orggeochem.2017.04.013

  • Impact of NaCl Solution Pretreatment on Plant Growth and the Uptake of Multi-heavy Metal by the Model Plant Arabidopsis thaliana Invited Reviewed International journal

    Marco Antonio León-Romero, Paula Cecilia Soto-Ríos, Megumu Fujibayashi, Osamu Nishimura

    WATER AIR AND SOIL POLLUTION   228 ( 2 )   2017.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s11270-017-3241-8

  • 原生動物CyclidiumおよびGlaucomaによる必須脂肪酸の合成 Invited Reviewed

    藤林恵、橋戸駿、田中伸幸、野村宗弘、西村修

    土木学会論文集G   72   Ⅲ_567 - Ⅲ_572   2016.10

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  • Response of microalgae to elevated CO2 and temperature: impact of climate change on freshwater ecosystems Invited Reviewed International journal

    Wei Li, Xiaoguang Xu, Megumu Fujibayashi, Nobuyuki Tanaka, Osamu Nishimura

    Environmental Science and Pollution Research   23   19847 - 19860   2016.10

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  • Summer profundal hypoxia determines the coupling of methanotrophic production and the pelagic food web in a subtropical reservoir Invited Reviewed International journal

    Pei-Chi Ho, Noboru Okuda, Takeshi Miki, Masayuki Itoh, Fuh-Kwo Shiah, Chun-Wei Chang, Silver Sung-Yun Hsiao, Shuh-Ji Kao, Megumu Fujibayashi, Chih-Hao Hsieh

    FRESHWATER BIOLOGY   61 ( 10 )   1694 - 1706   2016.10

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    DOI： 10.1111/fwb.12809

  • Interactions between biogeochemical environment and suspended oyster farming in Shizugawa Bay, Japan Invited Reviewed International journal

    Yizhe Zheng, Kyohei Hayashi, Takumi Matsuno, Megumu Fujibayashi, Munehiro Nomura, Osamu Nishimura, Takashi Sakamaki

    Proceedings of EMECS'11 - SeaCoasts XXVI Joint conference   80   2016.8

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  • Global climate change driven by soot at the K-Pg boundary as the cause of the mass extinction Invited Reviewed International journal

    Kunio Kaiho, Naga Oshima, Kouji Adachi, Yukimasa Adachi, Takuya Mizukami, Megumu Fujibayashi, Ryosuke Saito

    SCIENTIFIC REPORTS   6   2016.7

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    DOI： 10.1038/srep28427

  • EVALUATION OF FOOD SOURCES ASSIMILATED BY UNIONID MUSSELS USING FATTY ACID TROPHIC MARKERS IN JAPANESE FRESHWATER ECOSYSTEMS Invited Reviewed International journal

    Megumu Fujibayashi, Hitoshi Tanaka, Osamu Nishimura

    JOURNAL OF SHELLFISH RESEARCH   35 ( 1 )   231 - 235   2016.4

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.2983/035.035.0125

  • Food utilization of shell-attached algae contributes to the growth of host mud snail, Bellamya chinensis: Evidence from fatty acid biomarkers and carbon stable isotope analysis Invited Reviewed International journal

    Megumu Fujibayashi, Takashi Sakamaki, Wooseok Shin, Osamu Nishimura

    LIMNOLOGICA   57   66 - 72   2016.3

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.limno.2015.11.006

  • Fractionation of the stable carbon isotope ratio of essential fatty acids in zebrafish Danio rerio and mud snails Bellamya chinensis Reviewed International journal

    Megumu Fujibayashi, Masahiro Ogino, Osamu Nishimura

    OECOLOGIA   180 ( 2 )   589 - 600   2016.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s00442-015-3486-0

  • Asymmetric response of sedimentary pool to surface water in organics from a shallow hypereutrophic lake: The role of animal consumption and microbial utilization Invited Reviewed International journal

    Xiaoguang Xu, Wei Li, Megumu Fujibayashi, Munehiro Nomura, Osamu Nishimura, Xianning Li

    ECOLOGICAL INDICATORS   58   346 - 355   2015.11

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.ecolind.2015.06.009

  • Spatio-temporal characteristics of the fatty acid compositions of two macrobenthos (Nuttallia olivacea and Hediste sp.) in the Nanakita River estuary, Japan Invited Reviewed International journal

    Woo-Seok Shin, Megumu Fujibayashi, Osamu Nishimura

    ENVIRONMENTAL EARTH SCIENCES   74 ( 6 )   5283 - 5293   2015.9

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s12665-015-4602-5

  • Predominance of archaea-derived hydrocarbons in an Early Triassic microbialite Invited Reviewed International journal

    Ryosuke Saito, Kunio Kaiho, Masahiro Oba, Megumu Fujibayashi, Jinnan Tong, Li Tian

    ORGANIC GEOCHEMISTRY   85   66 - 75   2015.8

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    DOI： 10.1016/j.orggeochem.2015.05.004

  • Predominance of terrestrial organic matter in sediments from a cyanobacteria- blooming hypereutrophic lake Invited Reviewed International journal

    Xiaoguang XU, Wei LI, Megumu FUJIBAYASHI, Munehiro NOMURA, Osamu NISHIMURA, Xianning LI

    ECOLOGICAL INDICATORS   50   35 - 43   2015.3

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    DOI： 10.1016/j.ecolind.2014.10.020

  • 炭素安定同位体比および脂肪酸バイオマーカーを用いたマルタニシの餌源の解明 Invited Reviewed

    藤林恵、長田祐輝、相川良雄、西村修

    土木学会論文集G   70   Ⅲ_413 - Ⅲ_418   2014.10

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  • Contribution of potential organic matter sources to the macrobenthos nutrition in the Natori estuarine tidal flats, Japan Invited Reviewed International journal

    Woo-Seok SHIN, Megumu FUJIBAYASHI, Osamu NISHIMURA

    RUSSIAN JOURNAL OF MARINE BIOLOGY   40 ( 5 )   396 - 404   2014.9

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    DOI： 10.1134/S1063074014050071

  • Feedback of Threshold via estimating sources and composition of sedimentary organic matter across trophic gradients in freshwater lakes Invited Reviewed International journal

    Xiaoguang Xu, Wei Li, Megumu Fujibayashi, Menehiro Nomura, Takashi Sakamaki, Osamu Nishimura, Xianning Li

    Science of the Total Environment   500-501   373 - 382   2014.8

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  • Lead removal efficiency using biosorbents as alternative materials for permeable reactive barriers Invited Reviewed International journal

    Paula Cecilia Soto-Rios, Kazunori Nakano, Megumu Fujibayashi, Marco Leon-Romero, Osamu Nishimura

    WATER SCIENCE AND TECHNOLOGY   70 ( 2 )   307 - 314   2014.7

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    DOI： 10.2166/wst.2014.223

  • 閉鎖性水域の生物多様性におよぼす底質の高度不飽和脂肪酸の役割 Invited

    藤林恵

    財団法人建設工学研究振興会年報   49   45 - 50   2014.4

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  • The role of rapid mixing condition on picophytoplankton floc growth Invited Reviewed International journal

    Tugrul Selami Aktas, Fumihiko Takeda, Chikako Maruo, Megumu Fujibayashi, Osamu Nishimura

    DESALINATION AND WATER TREATMENT   52 ( 7-9 )   1404 - 1413   2014.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1080/19443994.2013.787951

  • 流動と底質有機炭素の起源に注目した伊豆沼の底質形成機構の解析 Invited Reviewed

    藤林恵、野村宗弘、許暁光、佐藤亮、相川良雄、西村修

    土木学会論文集G   69   Ⅲ_565 - Ⅲ_569   2013.10

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  • イソシジミ（Nuttallia olivacea）の成育状況と餌料環境の変動特性 Invited Reviewed

    丸尾知佳子、藤林恵、相川良雄、西村修

    土木学会論文集G   69   Ⅲ_495 - Ⅲ_501   2013.10

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  • Influence of velocity gradient and rapid mixing time on flocs formed by polysilica iron (PSI) and polyaluminum chloride (PACl) Invited Reviewed International journal

    Tugrul Selami Aktas, Fumihiko Takeda, Chikako Maruo, Megumu Fujibayashi, Osamu Nishimura

    DESALINATION AND WATER TREATMENT   51 ( 22-24 )   4729 - 4735   2013.6

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1080/19443994.2012.751883

  • Ether lipids from the Lower and Middle Triassic at Qingyan, Guizhou Province, Southern China Invited Reviewed International journal

    Ryosuke Saito, Masahiro Oba, Kunio Kaiho, Chikako Maruo, Megumu Fujibayashi, Jing Chen, Zhong-Qiang Chen, Jinnan Tong

    ORGANIC GEOCHEMISTRY   58   27 - 42   2013.5

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.orggeochem.2013.02.002

  • Comparison of four kinds of coagulants for the removal of picophytoplankton Invited Reviewed International journal

    Tugrul Selami Aktas, Fumihiko Takeda, Chikako Maruo, Megumu Fujibayashi, Osamu Nishimura

    DESALINATION AND WATER TREATMENT   51 ( 16-18 )   3547 - 3557   2013.4

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1080/19443994.2012.750777

  • マルタニシが這う際に残す粘液が水田底泥の有機物分解に及ぼす影響 Invited Reviewed

    藤林恵、慎ウソク、長濱祐美、相川良雄、西村修

    水処理生物学会誌   48   141 - 144   2012.10

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  • イソシジミ（Nuttallia olivacea）の生息状況に影響を与える餌料源の検討 Invited Reviewed

    丸尾知佳子、藤林恵、相川良雄、西村修

    土木学会論文集G   68   Ⅲ_277 - Ⅲ_283   2012.10

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  • ゼブラフィッシュ飼育実験による脂肪酸-炭素安定同位体比の濃縮係数の算出 Invited Reviewed

    荻野修大、藤林恵、長田祐輝、相川良雄、西村修

    土木学会論文集G   68   Ⅲ_627 - Ⅲ_633   2012.10

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  • 炭素・窒素安定同位体比を指標とした太湖底質有機物起源の解析 Invited Reviewed International journal

    藤林恵、野村宗弘、許暁光、李先寧、相川良雄、西村修

    土木学会論文集G   68   Ⅲ_493 - Ⅲ_498   2012.10

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  • 干潟に堆積する有機物の起源およびバクテリアによる利用性 Invited Reviewed

    Woo-seok SHIN、藤林恵、長濱祐美、野村宗弘、西村修

    水処理生物学会誌   48   29 - 35   2012.3

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  • Fatty acid composition between Nuttallia olivacea and Hediste spp. in the Nanakita Estuary, Japan: Estimation of food sources Invited Reviewed International journal

    Woo-seok SHIN, Megumu FUJIBAYASHI, Munehiro NOMURA, Kazunori NAKANO, Osamu Nishimura

    DESALINATION AND WATER TREATMENT   10   11 - 22   2012.3

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  • 海草コアマモ場と近傍裸地における底質有機物の起源 Invited Reviewed

    長濱祐美、中山亮、Woo-Seok Shin、藤林恵、野村宗弘、西村修

    土木学会論文集G   67   Ⅲ117 - Ⅲ122   2011.10

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  • Influence of pesticides on abnormal antenna of freshwater snail Bellamya Chinensis Reviewed International journal

    Megumu Fujibayashi, Toru Ozawa, Woo-Seok Shin, Yumi Nagahama, Yoshio Aikawa, Osamu Nishimura

    Proceedings of The 4th IWA-Aspire Conference and Exhibition   2011.10

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  • Contribution of Phragmites australis as nutrition for macrobenthos in estuarine tidal flats Reviewed International journal

    Woo Seok Shin, Megumu Fujibayashi, Yumi Nagahama, Munehiro Nomura, Kazunori Nakano, Yoshio Aikawa, Osamu Nishimura

    Proceedings of The 4th IWA-Aspire Conference and Exhibition   2011.10

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  • Characterization of the Carbon Stable Isotope Ratio and Fatty Acid Structure of Zostera japonica in Coastal Areas Invited Reviewed International journal

    Yumi NAGAHAMA, Munehiro NOMURA, Megumu FUJIBAYASHI, Woo-seok SHIN, Osamu NISHIMURA

    Journal of Water and Environment Technology   9   101 - 109   2011.6

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  • 準絶滅危惧種マルタニシの必須脂肪酸要求特性の解明 Invited Reviewed

    藤林恵、慎祐奭、長濱祐美、中野和典、相川良雄、西村修

    環境工学研究論文集   47   9 - 14   2010.10

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  • 河口干潟における二枚貝とゴカイの餌源の季節変動 Invited Reviewed

    Woo-Seok SHIN、藤林恵、長濱祐美、野村宗弘、中野和典、西村修

    環境工学研究論文集   47   223 - 228   2010.10

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  • Estimation of origin of sediment organic matters in tidal flat by acid decomposability Invited Reviewed International journal

    Woo Seok Shin, Megumu Fujibayashi, Yumi Nagahama, Munehiro Nomura, Kazunori Nakano, Osamu Nishimura

    Proceedings of the 3rd International Conference on Estuaries and Coasts   1   373 - 379   2009.9

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  • Analysis of organic matters transportation by stable isotope and fatty acids in benthic ecosystems of Zostera japonica meadows Invited Reviewed International journal

    Yumi Nagahama, Munehiro Nomura, Megumu Fujibayashi, Woo Seok Shin, Kazunori Nakano, Osamu Nishimura

    Proceedings of 3rd International Conference on Estuaries and Coasts   1   329 - 335   2009.9

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  • 七北田川河口の3つの干潟における堆積有機物の起源とその特徴 Invited Reviewed

    Woo-Seok SHIN、藤林恵、野村宗弘、中野和典、西村修

    環境工学研究論文集   45   547 - 552   2008.10

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  • 脂肪酸解析による伊豆沼周辺に生息するタニシ類の餌同化内容の解明 Invited Reviewed

    藤林恵、中野和典、野村宗弘、千葉信男、西村修

    伊豆沼・内沼研究報告   2   27 - 33   2008.1

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  • 植栽基盤の深さがヨシの根の形態および窒素除去能力に及ぼす影響 Invited Reviewed

    中野和典、松井健良、藤林恵、千葉信男、野村宗弘、西村修

    用水と廃水   47   687 - 694   2005.8

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  • 湿地生態系に出現するタニシが付着藻類および浮遊藻類に与える影響 Invited Reviewed International journal

    藤林恵、中野和典、千葉信男、野村宗弘、西村修

    用水と廃水   47   681 - 686   2005.8

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Presentations

  • Cs吸着能の向上のための大気圧非平衡プラズマ処理条件についての実験的検討

    紙永　大輔 ・ 頼　雨桐 ・ 久場　隆広 ・ 藤林　恵 ・ Shahjalal Khandaker

    令和5年度土木学会西部支部研究発表会  2024.3 

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    Event date： 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：福岡大学   Country：Japan  

  • 今津干潟における底生珪藻の溶存態ケイ素吸収量及び底生動物の珪藻摂食量の評価

    甲斐　健太郎 ・ 有馬　悠祐 ・ 藤林　恵 ・ 仙田　量子 ・ 小森田　智大 ・ 久場　隆広

    令和5年度土木学会西部支部研究発表会  2024.3 

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    Event date： 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：福岡大学   Country：Japan  

  • 外来緑藻Micrasterias hardyiの培養および計数手法の検討

    難波　友哉 ・ 服部　光汰 ・ 藤林　恵 ・ 久場　隆広

    令和5年度土木学会西部支部研究発表会  2024.3 

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    Event date： 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：福岡大学   Country：Japan  

  • 多波長励起蛍光光度計による湖沼懸濁物質中の高度不飽和脂肪酸分布の現地観測手法の開発

    青木直哉、高島航太、藤林恵 、久場隆広

    令和5年度土木学会西部支部研究発表会  2024.3 

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    Event date： 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：福岡大学   Country：Japan  

  • 現場適応に向けたアオコ抑制のための青色LED照射が藻類等の生物多様性に及ぼす影響

    村上遼馬、藤林恵 、久場隆広

    令和5年度土木学会西部支部研究発表会  2024.3 

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    Event date： 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：福岡大学   Country：Japan  

  • 干潟生態系の保全に向けた流域の溶存態ケイ素収支の評価

    有馬 悠祐、藤林 恵、清野 聡子、久場 隆広

    第58回日本水環境学会年会  2024.3 

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    Event date： 2024.3

    Language：Japanese  

    Venue：九州大学   Country：Japan  

  • 今津干潟に対する溶存態ケイ素負荷量と珪藻の群集構造の変化

    藤林恵，有馬悠祐，千葉崇，武藤瑞果， 小森田智大，清野聡子，久場隆広

    第26回日本水環境学会シンポジウム  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：大阪大学   Country：Japan  

  • ワカサギのエイコサペンタエン酸含有率の部位間比較と分解特性の評価

    山口大智、藤林恵、宮田直幸、菅原巧太朗、久場隆広

    令和4年度土木学会西部支部研究発表会  2023.3 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：熊本大学   Country：Japan  

  • 今津干潟に対する溶存態ケイ素負荷量とその影響因子の評価

    有馬悠祐、藤林恵、仙田量子、桑原義博、久場隆広

    令和4年度土木学会西部支部研究発表会  2023.3 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：熊本大学   Country：Japan  

  • 応用生態工学的なアオコ抑制効果が藻類の多様性へ及ぼす影響の検証

    室原璃子、松濤直樹、藤林恵、久場隆広

    令和4年度土木学会西部支部研究発表会  2023.3 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：熊本大学   Country：Japan  

  • 脂肪酸組成と肥満度を指標としたシジミ類にとって好適な餌環境の評価

    清水康太、藤林恵、井上栄壮、古田世子、萩原裕規、大柳まどか、久場隆広

    令和4年度土木学会西部支部研究発表会  2023.3 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：熊本大学   Country：Japan  

  • 動物プランクトンが外来緑藻Micrasterias hardyiの在来種との種間競争に与える影響

    服部光汰、藤林恵、阿部雄大、一瀬諭、久場隆広

    令和4年度土木学会西部支部研究発表会  2023.3 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：熊本大学   Country：Japan  

  • 淡水産巻貝マルタニシを用いたアオコ抑制能力の評価

    梅本康太郎、藤林恵、久場隆広

    日本水処理生物学会第58回大会  2022.11 

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    Event date： 2022.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：熊本大学   Country：Japan  

  • 外来緑藻Micrasterias hardyiの増殖と環境要因の関係

    阿部雄大、藤林恵、一瀬諭、久場隆広

    日本水処理生物学会第58回大会  2022.11 

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    Event date： 2022.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：熊本大学   Country：Japan  

  • 古代湖・琵琶湖のベントス多様性に及ぼす温暖化影響

    奥田 昇、岡本紘奈、伊藤雅之、大高明史、藤林恵、小林由紀

    日本陸水学会第86回大会  2022.9 

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • 琵琶湖底層におけるメタン栄養食物網の空間パターン

    藤林恵、岡本紘奈、伊藤雅之、大高明史、小林由紀、奥田 昇

    日本陸水学会第86回大会  2022.9 

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • 亜熱帯地方のダム湖におけるメタン酸化細菌の長期観測

    小林由紀、伊藤雅之、藤林恵、小島久弥、福井学、奥田昇、Shiah FK

    日本陸水学会第86回大会  2022.9 

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • 瑞梅寺川流域を対象とした溶存態ケイ素動態の評価

    藤林恵、岡本蓮矢、清野聡子、久場隆広

    第25回日本水環境学会シンポジウム  2022.9 

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東京大学   Country：Japan  

  • Historical changes of the dissolved silicate supply and its effects on benthic animals in a tidal flat ecosystem International conference

    Megumu Fujibayashi, Renya Okamoto, Satoquo Seino, Takahiro Kuba

    SIL2022  2022.8 

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    Event date： 2022.8

    Language：English   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Germany  

  • Spatial variation in methane oxidizing bacterial communities in the bottom boundary layer of Lake Biwa warming International conference

    Yuki Kobayashi, Hirona Okamoto, Masayuki Itoh, Megumu Fujibayashi, Noboru Okuda

    Japan Geoscience Union Meeting 2022  2022.5 

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    Event date： 2022.5 - 2022.6

    Language：English  

    Venue：千葉：オンライン（ハイブリッド開催）   Country：Japan  

  • Spatial pattern of methanotrophic food webs in Lake Biwa under changing climates International conference

    Megumu Fujibayashi, Hirona Okamoto, Yuki Kobayashi, Masayuki Itoh, Akifumi Ohtaka, Noboru Okuda

    Japan Geoscience Union Meeting 2022  2022.5 

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    Event date： 2022.5 - 2022.6

    Language：English  

    Venue：千葉：オンライン（ハイブリッド開催）   Country：Japan  

  • Climate impacts on benthic biodiversity in a deep ancient Lake Biwa International conference

    Noboru Okuda, Hirona Okamoto, Masayuki Itoh, Akifumi Ohtaka, Megumu Fujibayashi, Yuki Kobayashi

    Japan Geoscience Union Meeting 2022  2022.5 

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    Event date： 2022.5 - 2022.6

    Language：English  

    Venue：千葉：オンライン（ハイブリッド開催）   Country：Japan  

  • 有機性基質無添加条件で集積したマンガン酸化培養系とマンガン酸化に関与する細菌群の特徴

    宮田直幸、簾内君仁、渡邊美穂、岡野邦宏、藤林恵、佐藤由也、淵田茂司、所千晴

    第56回水環境学会年会  2022.3 

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    Event date： 2022.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • ワカサギを指標とした湖沼間の高度不飽和脂肪酸供給量の比較

    新田真弓、藤林恵、高田芳博、渡邊美穂、岡野邦宏、宮田直幸

    第56回日本水環境学会年会  2022.3 

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    Event date： 2022.3

    Language：Japanese  

    Country：Japan  

  • 活性炭のCs吸着能を向上させる大気圧非平衡プラズマ処理法の検討

    鈴木俊資、山崎絢、李詩、藤林恵、久場隆広

    令和3年度土木学会西部支部研究発表会  2022.3 

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    Event date： 2022.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • ワカサギを指標とした湖沼懸濁物質中のエイコサペンタエン含有率の評価

    高島航太、藤林恵、久場隆広

    令和3年度土木学会西部支部研究発表会  2022.3 

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    Event date： 2022.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 繊毛虫によるMicrocystis aeruginosaの増殖抑制とエイコサペンタエン酸の合成

    李瑞寧、藤林恵、 田中伸幸、久場隆広

    令和3年度土木学会西部支部研究発表会  2022.3 

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    Event date： 2022.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 瑞梅寺川流域におけるシリカ動態に対する人為施設と河道内植生の影響

    岡本蓮矢、 久場隆広、藤林恵

    令和3年度土木学会西部支部研究発表会  2022.3 

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    Event date： 2022.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 青色LED及び珪藻類Nitzschia paleaによるアオコ抑制

    江崎直彦、松濤直樹、大隈一輝、渡邉俊介、井芹寧、ハオ愛民、藤林恵、久場隆広

    令和3年度土木学会西部支部研究発表会  2022.3 

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    Event date： 2022.3

    Language：Others  

    Country：Japan  

  • 湖沼生態系におけるω3脂肪酸供給量の評価指標の開発に向けたワカサギ脂肪酸組成の解析

    新田真弓、青森壮汰、藤林恵、高田芳博、渡邊美穂、岡野邦宏、宮田直幸

    日本陸水学会第85回大会  2021.9 

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    Event date： 2021.9

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • The relationship between fatty acid profiles of aquatic consumers and basal dietary sources: Can aquatic animals be used as an indicator of EPA and DHA supplies in Lakes? International conference

    Megumu Fujibayashi, Mayumi Nitta, Sota Aomori, Takashi Sakamaki, Kunihiro Okano, Hideki Sugiyama, Naoyuki Miyata

    SIL2021  2021.8 

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    Event date： 2021.8

    Language：English  

    Venue：オンライン   Country：Korea, Republic of  

  • 水域生態系における脂肪酸濃度・炭素同位体比の利用

    藤林恵

    第68回日本生態学会大会  2021.3 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：岡山市（オンライン開催）   Country：Japan  

  • 従属栄養マンガン酸化細菌を利用した有機物無添加条件における坑廃水処理

    宮田直幸，簾内君仁，渡邊美穂，岡野邦宏，藤林恵

    一般社団法人環境資源工学会WEBシンポジウム－休廃止鉱山と土壌環境に関わる研究の新たなる展開  2021.3 

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    Event date： 2021.3

    Language：Japanese  

    Country：Japan  

  • 秋田県八郎湖の底質表層におけるアオコ形成藻類を含む細菌叢の季節変動

    岡野邦宏，荒木美穂，藤林 恵，宮田直幸

    第55回水環境学会年会  2021.3 

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    Event date： 2021.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 湖沼生態系の健全性評価指標の開発に向けたワカサギ脂肪酸組成の解析

    新田真弓, 青森壮汰, 藤林恵, 高田芳博, 渡邊美穂, 宮田直幸

    第55回水環境学会年会  2021.3 

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    Event date： 2021.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 有機物無添加条件で集積したマンガン酸化培養系における坑廃水処理：重炭酸塩の添加効果

    簾内君仁, 渡邊美穂, 岡野邦宏, 宮田直幸, 藤林恵, 佐藤由也, 羽部浩

    第55回水環境学会年会  2021.3 

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    Event date： 2021.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 秋田県八郎湖で発生したアオコの分解に及ぼす海水の影響

    橋本晃一, 岡野邦宏, 藤林恵, 渡邊美穂, 宮田直幸

    第55回水環境学会年会  2021.3 

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    Event date： 2021.3

    Language：Japanese  

    Venue：オンライン   Country：Japan  

  • 湖沼の餌環境がワカサギの脂肪酸組成に与える影響

    新田真弓、藤林恵、青森壮汰、岡野邦宏、高田芳博、宮田直幸

    第54回日本水環境学会年会  2020.3 

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    Event date： 2020.3

    Language：Japanese  

    Country：Japan  

  • 八郎湖の食物網における藍藻由来有機物の移行経路の特定

    青森壮汰、藤林恵、新田真弓、高田芳博、岡野邦宏、宮田直幸

    第54回日本水環境学会年会  2020.3 

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    Event date： 2020.3

    Language：Japanese  

    Country：Japan  

  • 指定湖沼八郎湖の現状と課題：八郎湖におけるアオコの動態につて

    藤林恵

    令和元年度日本水環境学会東北支部セミナー  2019.11 

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    Event date： 2019.11

    Language：Japanese  

    Venue：秋田県秋田市   Country：Japan  

  • 秋田県の水圏生態系を対象とした脂肪酸および同位体を用いた食物網解析～物質循環を考慮した生態系管理に向けて～

    藤林恵

    秋田県立大学生態工学研究室　一般公開セミナー  2019.7 

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    Event date： 2019.7

    Language：Japanese  

    Venue：秋田県秋田市   Country：Japan  

  • Does a coastal community utilize inland carbon as dietary sources? Approach of stable carbon isotope ratios of essential fatty acids. International conference

    Megumu Fujibayashi, Kouichi Hashimoto, Kunihiro Okano, Naoyuki Miyata

    Lipids in the Ocean  2018.11 

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    Event date： 2018.11

    Language：Japanese  

    Country：France  

▼display all

MISC

  • 抽水植物帯の機能と湖沼環境の修復保全

    藤林恵

    用水と廃水   2021.10

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

Professional Memberships

  • Japanese Association of Benthology

  • The Japanese Society of Limnology

  • Japanese Society of Water Treatment Biology

  • Japan Society on Water Environment

  • Japan Society of Civil Engineers

Committee Memberships

  • 土木学会環境工学委員会   委員・幹事   Domestic

    2023.4 - 2024.4   

  • 日本水環境学会湿地・沿岸域研究委員会   幹事長   Domestic

    2022.4 - 2024.3   

  • 日本水環境学会特集企画編集部会   委員   Domestic

    2021.11 - 2024.3   

  • 日本水環境学会九州沖縄支部   Organizer   Domestic

    2021.4 - 2024.3   

  • 日本水環境学会湿地・沿岸域研究委員会   Organizer   Domestic

    2019.4 - 2022.3   

Academic Activities

  • 運営委員

    土木学会西部支部研究発表会　第Ⅶ部門  （ Japan ） 2024.3

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    Type：Competition, symposium, etc. 

  • 幹事長

    日本水環境学会第58回年会  （ Japan ） 2024.3

    　More details

    Type：Competition, symposium, etc. 

    Number of participants：1,320

  • 八郎湖研究会／委員

    Role(s)： Review, evaluation

    2023.12 - Present

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    Type：Scientific advice/Review 

  • 日本水処理生物学会

    2023.4 - Present

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    Type：Academic society, research group, etc. 

  • 運営委員

    土木学会西部支部研究発表会　第Ⅶ部門  （ Japan ） 2023.3

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    Type：Competition, symposium, etc. 

  • Screening of academic papers

    Role(s)： Peer review

    2023

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    Type：Peer review 

    Number of peer-reviewed articles in foreign language journals：7

    Number of peer-reviewed articles in Japanese journals：3

  • 実行委員

    日本水処理生物学会第 58 回大会  （ Japan ） 2022.11

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    Type：Competition, symposium, etc. 

  • Journal of Water and Environment Technology International contribution

    2022.6 - 2024.3

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    Type：Academic society, research group, etc. 

  • 運営委員

    土木学会西部支部研究発表会　第Ⅶ部門  （ Japan ） 2022.3

    　More details

    Type：Competition, symposium, etc. 

  • 運営委員

    土木学会西部支部研究発表会　第Ⅶ部門  （ Japan ） 2021.3

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    Type：Competition, symposium, etc. 

  • Screening of academic papers

    Role(s)： Peer review

    2020

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    Type：Peer review 

    Number of peer-reviewed articles in foreign language journals：7

    Number of peer-reviewed articles in Japanese journals：3

  • 八郎湖研究会／委員

    Role(s)： Review, evaluation

    2019.4 - 2020.3

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    Type：Scientific advice/Review 

  • Screening of academic papers

    Role(s)： Peer review

    2019

    　More details

    Type：Peer review 

    Number of peer-reviewed articles in foreign language journals：7

    Number of peer-reviewed articles in Japanese journals：2

    Proceedings of International Conference Number of peer-reviewed papers：0

    Proceedings of domestic conference Number of peer-reviewed papers：0

▼display all

Research Projects

  • Considering phosphorus dynamics in effective soil layer, assessment of soil fertility and proposal of fertilizer and water management

    Grant number：24K01869  2024.4 - 2027.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    濱 武英, 折立 文子, 櫻井 伸治, 伊藤 紘晃, 藤林 恵, 中村 公人

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    Grant type：Scientific research funding

    肥料需要の増加と水環境汚染を背景に，持続可能なリン資源循環の構築が求められている。しかし，実際の農地では依然としてリンが過剰に施用される傾向にある。そこで本研究は，水田（水稲）と畑地（小麦）の養分吸収の有効土層におけるリン動態の解明を通じて，有機質肥料を含む多様なリンの有効な利用方法を明らかにすることを目的とする。まず，室内栽培実験によって，有機態リンの分解過程や吸着態リンの放出過程を明らかにし，作物の成長（根の伸長）とリン吸収の変化を考慮したリン動態モデルを開発する。そして，現地観測による実態把握とモデルの検証・改良を行い，新しいリン肥沃度の評価のあり方を提案する。

    CiNii Research

  • ダム貯水池の高度不飽和脂肪酸供給に対する環境要因の影響

    2023

    九州地方計画協会研究支援

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    Authorship：Principal investigator  Grant type：Contract research

  • 陸域から供給されるケイ素の歴史的変遷と干潟生態系の群集構造に与える影響（その3）

    2023

    公益財団法人国際エメックスセンター令和4年度若手研究者活動支援制度助成金

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    Authorship：Principal investigator  Grant type：Contract research

  • Development of plasma treatment apparatus for granular active carbide as Cs adsorbent with volume-reducing ability and backup performance

    Grant number：22K18833  2022.6 - 2024.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    KUBA Takahiro

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    Grant type：Scientific research funding

    Researchers are looking to find an effective adsorbent for the Cs (cesium) removal from wastewater or natural environment. Among the different adsorbents, functional activated carbon (AC) demonstrated a significant result for Cs removal. However, chemical treatment on AC is always difficult and environmentally unfriendly. Therefore, plasma treatment on AC to make it functionalized is one of the alternative choices.
    In this study, AC was treated with plasma under oxygen atmosphere by changing effect of its material, specific surface area and particle size, and also distance between electrodes of plasma processor, followed by Cs adsorption batch test. This study concludes that the adsorbent material and particle size, and also distance between electrodes and voltage are critical parameters in plasma treatment for utilizing Cs adsorption and that the specific surface area of the sample has no effect on the amount of Cs adsorption.

    CiNii Research

  • 沿岸生態系における窒素の相対的過多がもたらす生体分子フローの変質と環境管理適正化

    Grant number：23K25007  2022.4 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    坂巻 隆史, 藤林 恵

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    Grant type：Scientific research funding

    実海域において採取される沿岸海域のプランクトン群集に対して窒素添加実験を行う．これを通じて，プランクトン群集としての各種生体分子生成速度に対する窒素負荷の影響を明らかにする．さらに，実海水連続流入型の小型メソコズムで，窒素・リンを異なる条件で培養されたプランクトン群集を添加する複数系を作成し，若齢マガキの飼育実験を行う．これにより窒素過多によるプランクトン性微細藻類の質・組成変化がマガキの生育，摂餌・同化過程，生体分子組成に及ぼす影響を定量的に把握し，それらのプロセスのモデル化に向けた基礎的知見を集積する．さらに，水産物としての品質に及ぼす栄養塩環境の影響を評価する．

    CiNii Research

  • 沿岸生態系における窒素の相対的過多がもたらす生体分子フローの変質と環境管理適正化

    2022 - 2025

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Specially Promoted Research

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • ⽔⽣動物による体内合成を考慮した湖沼⽣態系によるEPA・DHA供給能の評価

    2022 - 2023

    住友財団2022年度 環境研究助成

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    Authorship：Principal investigator  Grant type：Contract research

  • 生態系リスク評価に向けた外来緑藻Micrasterias hardyiの増殖特性および種間相互作用の解明

    2022 - 2023

    公益財団法人クリタ水・環境科学振興財団: 国内研究助成

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    Authorship：Principal investigator  Grant type：Contract research

  • 丸田池の藻類（アオコ等）の異常発生による水質への影響と改善に関する研究

    2022

    糸島市協定大学等課題解決型研究事業

    　 More details

    Authorship：Principal investigator  Grant type：Contract research

  • 陸域から供給されるケイ素の歴史的変遷と干潟生態系の群集構造に与える影響（その2）

    2022

    公益財団法人国際エメックスセンター令和4年度若手研究者活動支援制度助成金

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    Authorship：Principal investigator  Grant type：Contract research

  • ワカサギを用いたダム貯水池の高度不飽和脂肪酸供給の実態評価

    2022

    九州地方計画協会研究支援

    　 More details

    Authorship：Principal investigator  Grant type：Contract research

  • 陸域から供給されるケイ素の歴史的変遷と干潟生態系の群集構造に与える影響

    2021

    公益財団法人国際エメックスセンター令和3年度若手研究者活動支援制度助成金

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    Authorship：Principal investigator  Grant type：Contract research

  • 九州地方のダム湖における外来緑藻Micrasterias hardyiの侵入状況

    2021

    九州地方計画協会研究支援

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    Authorship：Principal investigator  Grant type：Contract research

  • 下水処理水による珪素供給ポテンシャルと放流先の生態系に与える影響

    2020 - 2021

    工学研究新分野開拓助成

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    Authorship：Principal investigator  Grant type：On-campus funds, funds, etc.

  • Enhancing multi-species aquaculture in an inner bay through the integration of ecosystem ecology and mathematical optimization

    Grant number：19KT0006  2019.7 - 2024.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Sakamaki Takashi

    　 More details

    Grant type：Scientific research funding

    1) Seasonal cycles of the chemical composition of particulate organic matter (POM) in Shizugawa Bay, and spatial distribution characteristics from the inner bay to the mouth of the bay, were elucidated. The fluxes and chemical composition of POM sinking to the bottom layer in the bay area and within aquaculture facilities were also clarified. 2) The effects of removing fouling organisms on cultivated oysters’ growth and POM settling flux were quantified through field experiments. Additionally, parameters for the individual growth model of cultured oysters were determined based on surveys and experimental results in the bay. Using these models, changes in the effectiveness of attached organism removal according to variations in feed concentration and fouling biomass were revealed. 3) A mathematical optimization algorithm was developed to explore operation cycles for maximizing oyster aquaculture production.

    CiNii Research

  • 生態系生態学と数理最適化の融合による複合型内湾養殖漁業の高度化

    2019 - 2021

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 原生動物による高度不飽和脂肪酸合成と原生動物食物網解析手法の確立

    2019 - 2021

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • ワカサギを指標とした富栄養化湖沼の生態系の健全性評価手法の提案

    2019 - 2021

    環境研究総合推進費（若手）

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    Authorship：Principal investigator  Grant type：Contract research

  • 植生環境モニタリング調査（平成30年度）

    2018.4 - 2019.1

    　 More details

    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • ウッドルフ鉱微結晶の微生物生成系を利用した坑廃水処理技術への挑戦

    2018 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Challenging Research(Exploratory)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 湖辺の環境改善の指標となり得る二枚貝の成長と餌環境との関係解明調査

    2017.4 - 2022.3

    Research commissions

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    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • 植生環境モニタリング調査(平成29年度）

    2017.4 - 2018.1

    Research commissions

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    Authorship：Coinvestigator(s)  Grant type：Other funds from industry-academia collaboration

  • 湖沼底層部の低酸素化が誘導するメタロゲニウム粒子生成の分子機構と駆動システム解明

    2017 - 2020

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 流域資源管理に向けた水文・藻類モデルを利用した河川総生物量推定手法の開発

    2016 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 藍藻の異常増殖が常態化する太湖の食物網解析と生物多様性維持機構の解明

    2016 - 2018

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 脂肪酸分析によるトップダウン型生態系評価への基盤構築

    2016 - 2018

    Grants-in-Aid for Scientific Research  Grant-in-Aid for challenging Exploratory Research

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 湖沼の炭素・窒素循環を駆動するメタン栄養食物網のグローバルパターン解明

    2016 - 2018

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 二枚貝類の水質浄化機能・能力に関する研究

    2016

    秋田県産学官連携促進事業　萌芽シーズ育成・連携促進事業

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    Authorship：Principal investigator  Grant type：Contract research

  • 内湾生態系における陸上由来有機物に含まれる必須脂肪酸の重要性

    2014 - 2015

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 水質障害原因藻類の生活環と湖内循環過程の生化学的マーカーを活用した解析手法の構築

    2013 - 2015

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • メタン酸化細菌のマーカー脂肪酸分析技術の開発

    2013

    2013年度京都大学生態学研究センター共同利用・共同研究

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    Authorship：Principal investigator  Grant type：Contract research

  • 太湖生態系機能復元のための底質環境の実態調査

    2012 - 2014

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • タニシの高度不飽和脂肪酸濃縮機構の解明と生物多様性保全への応用

    2012 - 2013

    Grants-in-Aid for Scientific Research  Grant-in-Aid for challenging Exploratory Research

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    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • タニシ粘液の付着藻類活性化作用による浮遊藻類抑制効果の評価

    2005

    平成17年度公益財団法人クリタ水・環境科学振興財団 国内研究助成

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    Authorship：Principal investigator  Grant type：Contract research

  • 原生動物による高度不飽和脂肪酸合成と原生動物食物網解析手法の確立

    Grant number：19K04666 

    藤林 恵, 宮田 直幸

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    Grant type：Scientific research funding

    本研究では、これまで藻類や一部の細菌が合成すると考えられてきた必須脂肪酸が、繊毛虫や鞭毛虫などの原生動物によっても合成されいてることを明らかにすることを目的とする。さらに、水圏生態系の食物網における原生動物の必須脂肪酸供給源としての役割を評価できるようにするために、原生動物の食物網を解析するための方法を開発することを目指す。

    CiNii Research

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Class subject

  • 工学概論

    2023.4 - 2023.9   First semester

  • 身近な地球環境の科学B

    2021.10 - Present   Second semester

  • 土木実践教室

    2020.10 - Present   Second semester

  • 環境調和型社会の構築

    2020.4 - Present   First semester

  • 土木と社会セミナー

    2020.4 - Present   First semester

Teaching Student Awards

  • 優秀発表賞

    Classification of award-winning students：Postgraduate student   Name of award-winning student：有馬　悠祐

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    瑞梅寺川流域における溶存態ケイ素収支の評価