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タイトル: | Effects of forest cover on richness of threatened fish species in Japan |
著者: | Lavergne, Edouard Kume, Manabu https://orcid.org/0000-0001-7287-029X (unconfirmed) Ahn, Hyojin Henmi, Yumi Terashima, Yuki Ye, Feng Kameyama, Satoshi Kai, Yoshiaki Kadowaki, Kohmei Kobayashi, Shiho Yamashita, Yoh Kasai, Akihide |
著者名の別形: | 久米, 学 安, 孝珍 邉見, 由美 寺島, 佑樹 亀山, 哲 甲斐, 嘉晃 門脇, 浩明 小林, 志保 山下, 洋 笠井, 亮秀 |
キーワード: | anthropogenic activity coastal water bodies environmental DNA metabarcoding estuary land use actividad antropogénica cuerpos de agua costeros estuario metasecuenciación de ADN ambiental uso de suelo |
発行日: | Jun-2022 |
出版者: | The Society for Conservation Biology Wiley |
誌名: | Conservation Biology |
巻: | 36 |
号: | 3 |
論文番号: | e13847 |
抄録: | Estuaries -- one of the most vulnerable ecosystems globally -- face anthropogenic threats, including biodiversity loss and the collapse of sustainable fisheries. Determining the factors contributing to the maintenance of estuarine biodiversity, especially that of fish, is vital for promoting estuarine conservation and sustainability. We used environmental DNA metabarcoding analysis to determine fish species composition in 22 estuaries around Japan and measured watershed-scale land-use factors (e.g., population size, urban area percentage, and forest area percentage). We sought to test the hypothesis that the richness of the most vulnerable estuarine fish species (i.e., registered by the Japanese Ministry of the Environment in the national species red-list) is determined by watershed-scale land-use factors. The richness of such species was greater where forest cover was highest; thus, forest cover contributes to their conservation. The proportion of agriculture cover was associated with low species richness of red-listed fishes (redundancy analysis, adjusted R² = 43.9% of total variance, df = 5, F = 5.3843, p = 0.0001). The number of red-listed species increased from 3 to 12 along a watershed land-use gradient ranging from a high proportion of agriculture cover to a large proportion of forest cover. Furthermore, the results showed that throughout Japan all the examined watersheds that were covered by >74.8% forest had more than the average (6.7 species per site) richness of red-listed fish species. This result can be attributed to the already high average forest cover in Japan of 67.2%. Our results demonstrate how the land use of watersheds can affect the coastal sea environment and its biodiversity and suggest that proper forest management in conjunction with land-use management may be of prime importance for threatened fish species and coastal ecosystems in general. |
記述: | 森林を守ることが海の生物多様性を守ることにつながる. 京都大学プレスリリース. 2021-10-26. |
著作権等: | © 2021 The Authors. Conservation Biology published by Wiley Periodicals LLC on behalf of Society for Conservation Biology. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
URI: | http://hdl.handle.net/2433/274104 |
DOI(出版社版): | 10.1111/cobi.13849 |
PubMed ID: | 34668598 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2021-10-26 |
出現コレクション: | 学術雑誌掲載論文等 |
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