2024/10/01 更新

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写真a

ジヤンダン スパカーン
JANDANG SUPPAKARN
JANDANG SUPPAKARN
所属
応用力学研究所 附属海洋プラスチック研究センター 助教
職名
助教
プロフィール
海洋生態系に対するプラスチック汚染の影響評価, サンゴ礁の生態系と保全

学位

  • 博士(海洋科学)

研究テーマ・研究キーワード

  • 研究テーマ:サンゴおよび沿岸生態系におけるマイクロプラスチックの蓄積の評価 魚とその獲物に含まれるマイクロプラスチックの研究(食物連鎖におけるマイクロプラスチックの移動の可能性)

    研究キーワード:プラスチック汚染、マイクロプラスチック、サンゴ、沿岸生態系

    研究期間: 2022年7月 - 2026年4月

受賞

  • Outstanding alumni award

    2024年3月   Prince of Songkla University (PSU)  

  • 1st Prize of the outstanding poster presentation award

    2018年11月   International Conference on the Environmental Management of the Enclosed Coastal Seas  

  • WESTPAC Young Scientists Travel Grant

    2017年4月   IOC Sub-Commission for the Western Pacific (WESTPAC)  

論文

  • Possible sink of missing ocean plastic: Accumulation patterns in reef-building corals in the Gulf of Thailand

    Jandang S., Alfonso M.B., Nakano H., Phinchan N., Darumas U., Viyakarn V., Chavanich S., Isobe A.

    Science of the Total Environment   954   176210   2024年12月   ISSN:00489697

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    記述言語:英語   出版者・発行元:Science of the Total Environment  

    Individual coral polyps contain three distinct components—the surface mucus layer, tissue, and skeleton; each component may exhibit varying extent of microplastic (MP) accumulation and serve as a short- or long-term repository for these pollutants. However, the literature on MP accumulation in wild corals, particularly with respect to the different components, is limited. In this study, we investigated the adhesion and accumulation of MPs in four coral species, including both large (Lobophyllia sp. and Platygyra sinensis) and small (Pocillopora cf. damicornis and Porites lutea) polyp corals collected from Si Chang Island in the upper Gulf of Thailand. The results revealed that MP accumulation varied significantly among the four coral species and their components. Specifically, P. cf. damicornis exhibited the highest degree of accumulation (2.28 ± 0.34 particles g−1 w.w.) [Tukey's honestly significant difference (HSD) test, p < 0.05], particularly in their skeleton (52.63 %) and with a notable presence of high-density MPs (Fisher's extract test, p < 0.05). The most common MP morphotype was fragment, accounting for 75.29 % of the total MPs found in the coral. Notably, the majority of MPs were black, white, or blue, accounting for 36.20 %, 15.52 %, and 11.49 % of the samples, respectively. The predominant size range of MP particles was 101–200 μm. Nylon, polyacetylene, and polyethylene terephthalate (PET) were the prevalent polymer types, accounting for 20.11 %, 14.37 %, and 9.77 % of the identified samples, respectively. In the large polyp corals, while MP shapes, colors, and sizes exhibited consistent patterns, remarkable differences were noted in the polymer types across the three components. The findings of this study improve the understanding of MP accumulation and its fate in coral reef ecosystems, underscoring the need for further investigation into MP-accumulation patterns in reef-building corals worldwide.

    DOI: 10.1016/j.scitotenv.2024.176210

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  • Small microplastic ingestion by the calanoid <i>Centropages furcatus</i> in the Gulf of Thailand

    Alfonso, MB; Nakano, H; Jandang, S; Tanaka, M; Viyakarn, V; Chavanich, S; Isobe, A

    SCIENCE OF THE TOTAL ENVIRONMENT   930   172837   2024年6月   ISSN:0048-9697 eISSN:1879-1026

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Science of the Total Environment  

    Microplastics could be ingested by many organisms, including zooplankton, involving bioaccumulation and biomagnification mechanisms a cross food webs. The information about microplastic ingestion by zooplankton keeps increasing worldwide. However, it is still limited for particle sizes under 300 μm (small microplastics, SMPs) and in areas such as Southeast Asia, which is considered one of the hotspots for plastic debris. This study aimed to characterize the size, shape, and polymer types of the SMPs ingested by the copepod Centropages furcatus in Si Chang Island (upper Gulf of Thailand). The study spans offshore and coastal waters, with data collected across wet, intermediate, and dry seasons. Using a semi-automated technique for micro-FTIR (Fourier-transform infrared) scanning spectroscopy for particle analysis, we found ingested SMPs in all samples. A total of 750 individuals of the calanoid Centropages furcatus were analyzed, finding 309 plastic particles and an average ingestion value of 0.41 ± 0.13 particles ind−1, one of the highest recorded values. All the particles were fragments, with a predominant size under 50 μm, and polymer types as Polypropylene (PP, 71 %), followed by Ethylene-Propylene-Diene-Monomer (EPDM, 16 %) and Polyethylene (PE, 7 %). Up to 470.2 particles m−3 were estimated to be retained by this calanoid species and potentially available for trophic transfer. The effect of rainfall on SMPs ingestion was inconclusive, with a non-significant observed tendency to higher ingestion values near the coastal area than offshore area, suggesting a decrease in particle exposure due to the runoff effect. Nevertheless, future studies should increase the frequency of surveys to arrive at better conclusions.

    DOI: 10.1016/j.scitotenv.2024.172837

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  • Influence of monsoon seasonality and tidal cycle on microplastics presence and distribution in the Upper Gulf of Thailand

    Nakano, H; Alfonso, MB; Jandang, S; Phinchan, N; Chavanich, S; Viyakarn, V; Isobe, A

    SCIENCE OF THE TOTAL ENVIRONMENT   920   170787   2024年4月   ISSN:0048-9697 eISSN:1879-1026

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Science of the Total Environment  

    Southeast Asian countries are recognized as significant contributors to the discharge of abundant plastic waste into the ocean. In this study, we conducted neuston net surveys on Si Chang Island of the Gulf of Thailand, a coral reef conservation area, to determine the presence of microplastic (MP) pollution. The survey, conducted during the wet (southwesterly monsoon), transition, and dry seasons (northeasterly monsoon), revealed that the MP abundance was in the range of 0.02–42.46 particles m−3. The precipitation, wind, and current direction induced by monsoons influenced the abundance and distribution of MP, presenting a significant seasonality. The cluster analysis for colors and polymer types of MPs suggested that the origin of plastic particles is diverse. Based on our results, a proposal for the generation, sources, and pathways for MPs in the Gulf of Thailand is presented: 1) plastic wastes exposed to strong UV light during the dry season get fragmented around the river, and 2) heavy rains wash away the particles during the wet season. This proposal is applicable to tropical regions, including the Gulf of Thailand. Therefore, this paper concluded that ocean currents induced by monsoons and the unique climate, resulting in the generation of MPs on land, increase MP presence and distribution in the ocean surrounding Southeast Asia countries. Furthermore, coral reef ecosystems can be particularly threatened by MPs in these areas. So, an increase in MP monitoring on coral ecosystems from Thailand and the world is highly recommended.

    DOI: 10.1016/j.scitotenv.2024.170787

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  • Ontogenetic shifts in Symbiodiniaceae assemblages within cultured <i>Acropora humilis</i> across hatchery rearing and post-transplantation phases 査読 国際誌

    Jandang, S; Viyakarn, V; Yoshioka, Y; Shinzato, C; Chavanich, S

    FRONTIERS IN MARINE SCIENCE   11 ( 1138021. )   1 - 14   2024年1月   eISSN:2296-7745

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Frontiers in Marine Science  

    Coral reefs have been declining worldwide due to multiple threats. Various approaches for coral restoration have been employed to increase coral populations. Sexual propagation is a crucial technique that can enhance the genetic diversity of coral offspring, thereby increasing coral reef resilience in the face of a changing environment. However, the effectiveness of using sexually reared corals for transplantation depends on many factors, including the biological traits of the coral and the physical environment. This study investigated the relationship between Acropora humilis and Symbiodiniaceae during the ontogenetic stages of the coral in ex-situ conditions and after transplantation to a natural reef. Coral sexual propagation techniques were conducted to produce experimental coral colonies. The fertilization rates of coral gametes averaged 98.48 ± 0.34%. However, the survival rate of juvenile corals gradually declined to 45.96 ± 1.31% at 18 months old under hatchery conditions and to 20% after transplantation to a natural reef. Acropora humilis associated with Symbiodiniaceae lineages belonging to three genera: Symbiodinium, Cladocopium, and Durusdinium. Reared juvenile corals developed a more specific and stable association with particular Symbiodiniaceae under hatchery conditions, whereas after transplantation, corals tended to contain a higher diversity of Symbiodiniaceae lineages. These results indicate that a shift in Symbiodiniaceae composition can provide long-term benefits to corals during their ontogenetic cycle and when the environment changes.

    DOI: 10.3389/fmars.2024.1138021

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    その他リンク: https://www.researchgate.net/publication/377759995_Ontogenetic_shifts_in_Symbiodiniaceae_assemblages_within_cultured_Acropora_humilis_across_hatchery_rearing_and_post-transplantation_phases

  • Microplastic pollution indexes in the coastal and open ocean areas around Japan

    Nakano, H; Alfonso, MB; Jandang, S; Imai, K; Arakawa, H

    REGIONAL STUDIES IN MARINE SCIENCE   69   2024年1月   ISSN:2352-4855 eISSN:2352-4855

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Regional Studies in Marine Science  

    Researchers have made a significant effort to reveal plastic pollution's presence and consequences worldwide; however, there are no standard methods to evaluate the level of microplastic pollution. In this context, pollution index assessment in the marine environments contributes to showing a criteria of pollutants. Therefore, the pollution load index (PLI), the polymer risk index (H), and the pollution risk index (PRI) were estimated based on the MPs abundance and polymer-type information in situ for five areas around Japan's sea. According to H values, the contamination due to MPs presented low to moderate pollution levels in each area. Whereas the PRI classified the pollution levels from low (offshore) to very high (coast). Based on MPs' predicted concentrations for 2030 and 2060, the PRI is expected to increase, reaching a very high-pollution level even for offshore areas. The results of this study emphasize the importance of action to prevent additional plastic pollution and the importance of continued monitoring of the MPs in the environment.

    DOI: 10.1016/j.rsma.2023.103287

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  • Zooplankton as a suitable tool for microplastic research

    Alfonso, MB; Lindsay, DJ; Arias, AH; Nakano, H; Jandang, S; Isobe, A

    SCIENCE OF THE TOTAL ENVIRONMENT   905   167329   2023年12月   ISSN:0048-9697 eISSN:1879-1026

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    記述言語:英語   出版者・発行元:Science of the Total Environment  

    In recent years, significant efforts have been dedicated to measuring and comprehending the impact of microplastics (MPs) in the ocean. Despite harmonization guidelines for MPs research, discrepancies persist in the applied methodologies and future challenges, mostly for the smaller fractions (< 100 μm). Whether intentional or accidental, ingesting plastic particles by zooplankton can lead to incorporating this pollutant into aquatic food chains. Therefore, zooplankton can serve as a suitable proxy tool for assessing the presence of plastic particles in ocean waters. However, reliable information is essential for conducting experimental laboratory studies on the impact of MPs ingestion by zooplankton organisms. Using zooplankton as a research tool for MPs offers numerous advantages, including similar sampling methodologies and study techniques as MPs and particle data integration over space and time. The scientific community can gain novel perspectives by merging zooplankton studies with MPs research. This review explores key aspects of using zooplankton as a tool for MPs research in water samples, encompassing various views such as particles ingestion in natural environments, particle quantification in zooplankton samples (past and future), ecotoxicological and toxicology model studies. By leveraging the potential of zooplankton research, advancements can be made in developing innovative techniques for MPs analysis.

    DOI: 10.1016/j.scitotenv.2023.167329

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  • The seasonal investigation of Symbiodiniaceae in broadcast spawning, Acropora humilis and brooding, Pocillopora cf. damicornis corals 査読

    Jandang S., Viyakarn V., Yoshioka Y., Shinzato C., Chavanich S.

    PeerJ   10 ( e13114 )   1 - 25   2022年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PeerJ  

    The density and diversity of Symbiodiniaceae associated with corals can be influenced by seasonal changes . This study provided the first annual investigation of Symbiodiniaceae density and diversity associated with Acropora humilis and Pocillopora cf. damicornis corals in the Gulf of Thailand using both zooxanthellae cell count and next-generation sequencing (ITS-1, ITS-2 regions) techniques, respectively. The results from this study indicated that zooxanthellae cell densities in both coral species differ significantly. The number of zooxanthellae was negatively correlated with the physical environment variable (light intensity). The diversity within A. humilis consisted of two genera, Cladocopium (Cspc_C3: 56.39%, C3w: 33.62%, C93type1: 4.42% and Cspf: 3.59%) and a small amount of Durusdinium (D1: 1.03%) whereas P. cf. damicornis was found to be 100% associated with Durusdinium (D1: 95.58%, D6: 1.01% and D10: 2.7%) suggesting that each coral species may select their appropriate genus/species of Symbiodiniaceae in response to local environmental stressors. The results of this study provided some information on the coral-Symbiodiniaceae relationship between seasons, which may be applied to predict the potential adaptation of corals in localized reef environments.

    添付ファイル: Jandangetal2022.pdf

    DOI: 10.7717/peerj.13114

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  • Microbiomes of Healthy and Bleached Corals During a 2016 Thermal Bleaching Event in the Andaman Sea of Thailand

    Chavanich S., Kusdianto H., Kullapanich C., Jandang S., Wongsawaeng D., Ouazzani J., Viyakarn V., Somboonna N.

    Frontiers in Marine Science   9   2022年2月   eISSN:2296-7745

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Frontiers in Marine Science  

    As seawater temperature rises, repeated thermal bleaching events have negatively affected the reefs of the Andaman Sea for over decades. Studies on the coral-associated microbial diversity of prokaryotes and microbial eukaryotes (microbiome) in healthy and bleached corals are important to better understand the coral holobionts that involved augmented resistance to stresses, and this information remains limited in the Andaman Sea of Thailand. The present study thereby described the microbiomes of healthy (unbleached) and bleached colonies of four prevalent corals, Acropora humilis, Platygyra sp., Pocillopora damicornis, and Porites lutea, along with the surrounding seawater and sediments, that were collected during a 2016 thermal bleaching event, using 16S and 18S rRNA genes next-generation sequencing (NGS). Both prokaryotic and eukaryotic microbes showed isolated community profiles among sample types (corals, sediment, and seawater) [analysis of similarities (ANOSIM): p = 0.038 for prokaryotes, p < 0.001 for microbial eukaryotes] and among coral genera (ANOSIM: p < 0.001 for prokaryotes and microbial eukaryotes). In bleached state corals, we found differences in microbial compositions from the healthy state corals. Prevalent differences shared among bleached coral genera (shared in at least three coral genera) included a loss of reported coral-beneficial microbes, such as Pseudomonadales, Alteromonadales, and Symbiodinium; meanwhile an increase of putative coral-pathogenic Malassezia and Aspergillus. This difference could affect carbon and nitrogen availability for coral growth, reflective of a healthy or bleached state. Our findings in part supported previously microbial dysbiosis knowledge of thermal bleaching coral microbiomes around South East Asia marine geography, and together ongoing efforts are to support the understanding and management of microbial diversity to reduce the negative impacts to corals in massive thermal bleaching events.

    DOI: 10.3389/fmars.2022.763421

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  • First Report of Potential Coral Disease in the Coral Hatchery of Thailand

    Jandang S., Bulan D.E., Chavanich S., Viyakarn V., Aiemsomboon K., Somboonna N.

    Diversity   14 ( 1 )   2022年1月   eISSN:1424-2818

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    記述言語:英語   出版者・発行元:Diversity  

    In this study, coral disease was first reported in the coral hatchery in Thailand. Disease were usually found on corals aged two to five years old during the months of November to December of each year. To identify bacterial strains, culture-based methods for strain isolation and molecular techniques of the 16S rRNA gene analysis were used. The resuts showed that the dominant genera of bacteria in diseased corals were Vibrio spp. (comprising 41.01&#37; of the isolates). The occurrence of the disease in the coral hatchery can have a significant effect on the health and survival of juvenile corals before being transplanted to natural reefs for restoration.

    DOI: 10.3390/d14010018

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  • First dynamics of bacterial community during development of Acropora humilis larvae in aquaculture. 国際誌

    Chitrasak Kullapanich, Suppakarn Jandang, Matanee Palasuk, Voranop Viyakarn, Suchana Chavanich, Naraporn Somboonna

    Scientific reports   11 ( 1 )   11762 - 11762   2021年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1038/s41598-021-91379-w

  • Microbiomes of Healthy and Bleached Corals During a 2016 Thermal Bleaching Event in the Upper Gulf of Thailand

    Heru Kusdianto, Chitrasak Kullapanich, Matanee Palasuk, Suppakarn Jandang, Kobchai Pattaragulwanit, Jamal Ouazzani, Suchana Chavanich, Voranop Viyakarn, Naraporn Somboonna

    FRONTIERS IN MARINE SCIENCE   8   2021年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.3389/fmars.2021.643962

  • An Indo-Pacific coral spawning database. 国際誌

    Scientific data   8 ( 1 )   35 - 35   2021年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1038/s41597-020-00793-8

  • Establishing an Ocean Acidification Monitoring System for the Tropical Waters of Indonesia Facing Regional Climate Variability

    Hanif Budi Prayitno, Rachma Puspitasari, Suppakarn J, ang, Karlina Triana, Edwards Taufiqurrahman, Lestari, Afdal, Ita Wul, ari, Harmesa, Hanny Meirinawati, Suci Lastrini, Muhamad Taufik Kaisupy, A{ extquotesingle}an Johan Wahyudi

    ASEAN Journal on Science and Technology for Development   37 ( 3 )   2020年12月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    DOI: 10.29037/ajstd.638

    リポジトリ公開URL: https://hdl.handle.net/2324/7148409

  • Effect of lower pH on settlement and development of coral, Pocillopora damicornis (Linnaeus, 1758)

    Voranop Viyakarn, Wipada Lalitpattarakit, Narainrit Chinfak, Suppakarn Jandang, Pataporn Kuanui, Somkiat Khokiattiwong, Suchana Chavanich

    OCEAN SCIENCE JOURNAL   50 ( 2 )   475 - 480   2015年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s12601-015-0043-z

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講演・口頭発表等

  • Adhesion and deposition of microplastic in reef-building corals 国際会議

    Suppakarn Jandang, Maria Belen Alfonso, Nakano Haruka, Nopphawit Phinchan, Voranop Viyakarn, Suchana Chavanich and Atsuhiko Isobe

    2nd UN Ocean Decade Regional Conference & 11th WESTPAC International Marine Science Conference  2024年4月 

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    開催年月日: 2024年4月

    記述言語:英語   会議種別:口頭発表(一般)  

    国名:タイ王国  

  • Tidal and seasonal variability affects the microplastic adhesion and ingestion by reef-building corals 国際会議

    Suppakarn Jandang

    5th Asia-Pacific Coral Reef Symposium  2023年6月 

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    開催年月日: 2023年6月

    記述言語:英語   会議種別:シンポジウム・ワークショップ パネル(公募)  

    国名:シンガポール共和国  

  • The occurrence of microplastics in Russell's snapper (Lutjanus rusellii) and the potential for trophic transfer of their food chain 国際会議

    Suppakarn Jandang

    Japan Geoscience Union Meeting 2023  2023年5月 

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    開催年月日: 2023年5月

    記述言語:英語   会議種別:シンポジウム・ワークショップ パネル(公募)  

    国名:日本国  

  • Investigation of zooxanthellae in early to juvenile stages of staghorn corals in a rearing system

    Suppakarn Jandang

    The 10th International Scientific Conference  2017年4月 

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    記述言語:英語  

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  • Investigating dynamics in spawning timing and early life stage of Acropora corals at Sattahip in the upper Gulf of Thailand

    Suppakarn Jandang

    4th Asia-Pacific Coral Reef Symposium  2019年6月 

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    記述言語:その他  

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  • Zooxanthellae in early to juvenile stages of staghorn corals in a rearing hatchery

    Suppakarn Jandang

    The Society for Coastal Ecosystems Studies - Asia Pacific  2019年8月 

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    記述言語:その他  

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  • Investigating the dynamics of spawning of Acropora corals at Sattahip in the upper Gulf of Thailand

    Suppakarn Jandang

    23rd Biological Science Graduate Congress  2018年12月 

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  • Effects of acute and chronic changes in salinity and light on the bleaching and recovery of the staghorn coral, Acropora millepora

    Suppakarn Jandang

    The 13th International Coral Reef Symposium (ICRS)  2016年6月 

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    記述言語:英語  

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  • Influence of Salinity and Light on the Bleaching of Staghorn coral, Acropora millepora

    Suppakarn Jandang

    The 3rd Asia Pacific Coral Reef Symposium (APCRS)  2014年6月 

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    記述言語:英語  

    国名:その他  

  • Effect of salinity and light intensity on the bleaching of Staghorn coral, Acropora millepora

    Suppakarn Jandang

    The 8th International Conference on Coelenterate Biology  2013年12月 

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    記述言語:英語  

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  • Zooxanthellae in early to juvenile stages of Acropora humilis in rearing hatchery

    Suppakarn Jandang

    12th International Conference on the Environmental Management of Enclosed Coastal Seas (EMECS12)  2018年11月 

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    記述言語:英語  

    国名:その他  

  • Diversityof gorgonians and gamete development of gorgonian, Dichotella gemmacea 招待

    Suppakarn Jandang

    The 3rd Asian Marine Biology Symposium (AMBS)  2017年11月 

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    記述言語:英語  

    国名:その他  

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所属学協会

  • Japan Geoscience Union

共同研究・競争的資金等の研究課題

  • The impact of plastic pollution in coral reef ecosystems

    2023年

    Research Funding Support Program

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    担当区分:研究代表者  資金種別:学内資金・基金等

  • Science and Technology Research Partnership for Sustainable Development (SATREPS) 国際共著

    2020年4月 - 2025年3月

    Japanese government 

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    担当区分:連携研究者 

教育活動概要

  • タイ・チュラロンコン大学客員講師(サンゴ礁の生態とプラスチック汚染に関する集中授業)
    タイ海洋生態学サマーキャンプ ゲスト講師(海洋マイクロプラスチックに関する集中授業)

メディア報道

  • Microplastic in the marine environment and potential effect to human health

    2023年12月

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    Microplastic in the marine environment and potential effect to human health

  • The content is about plastic pollution research with the collaboration between Japan and Thailand. テレビ・ラジオ番組

    JibTV (ASEAN Now and the future III: Plastics in the Ocean EP.3)  2022年11月

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    The content is about plastic pollution research with the collaboration between Japan and Thailand.

  • A lecture on coral reef and coastal ecosystem conservation. https://www.egat.co.th/egattoday/egattoday/index.php?option=com_k2&view=item&id=19918:02082565-fuel02

    Egat Website  2022年7月

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    A lecture on coral reef and coastal ecosystem conservation. https://www.egat.co.th/egattoday/egattoday/index.php?option=com_k2&view=item&id=19918:02082565-fuel02