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Species diversity and abundance of seagrasses in southwestern Thailand under different influence of river discharge
https://doi.org/10.15083/00040826
https://doi.org/10.15083/0004082690e7ce3f-e2ca-48fe-8ad8-bcf6a76d680e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00004098943.pdf (603.5 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-04-05 | |||||
| タイトル | ||||||
| タイトル | Species diversity and abundance of seagrasses in southwestern Thailand under different influence of river discharge | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | seagrass | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Thailand | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | river discharge | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | spatial comparison | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | diversity | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | biomass | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/00040826 | |||||
| ID登録タイプ | JaLC | |||||
| 著者 |
Nakaoka, Masahiro
× Nakaoka, Masahiro× Tanaka, Yoshiyuki× Watanabe, Masako |
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| 著者所属 | ||||||
| 著者所属 | Graduate School of Science and Technology, Chiba University | |||||
| 著者所属 | ||||||
| 著者所属 | Akkeshi Marine Station, Hokkaido University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Seagrass beds are among the most important components in coastal ecosystem, but are susceptible to human-induced changes in terrestrial ecosystem. As a first step to understand the effects of terrestrial input through river discharge on tropical seagrass ecosystems, we carried out quantitative mapping of seagrass beds at Pang-gna and Trang Provinces, southwestern Thailand to examine spatial variation in species composition, species diversity and biomass of seagrasses. Five seagrass beds were chosen as study sites that locate at different distances from the major river mouths, and thus subjected to different impacts of river discharge. These seagrass beds differed greatly in environmental conditions, seagrass diversity and abundance. Seagrass beds located near large river mouths showed higher silt-clay content in the sediments and light attenuation of water, possibly due to transportation of sediment from rivers and its resuspension. A total of nine seagrass species occurred. Enhalus acoroides and Halophila ovalis occurred in all the stations, whereas distribution of other species were mostly confined to seagrass beds with small or moderate degree of siltation and light attenuation. Seagrass species diversity measured by species richness and Simpson's diversity index was lower in seagrass beds near the river mouth. These findings highlight negative impacts of terrestrial ecosystems through river discharge on seagrass biodiversity and its functioning along the coastal areas of southwestern Thailand. | |||||
| 書誌情報 |
Coastal marine science 巻 29, 号 1, p. 75-80, 発行日 2004-04-30 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 13493000 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11957899 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 452 | |||||
| 出版者 | ||||||
| 出版者 | International Coastal Research Center, Ocean Research Institute, the University of Tokyo | |||||
| 出版者別名 | ||||||
| 東京大学海洋研究所国際沿岸海洋研究センター | ||||||
