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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >
Effects of forest cover on richness of threatened fish species in Japan
| Title: | Effects of forest cover on richness of threatened fish species in Japan |
| Authors: | Lavergne, Edouard Browse this author | | Kume, Manabu Browse this author | | Ahn, Hyojin Browse this author | | Henmi, Yumi Browse this author | | Terashima, Yuki Browse this author | | Ye, Feng Browse this author | | Kameyama, Satoshi Browse this author →KAKEN DB | | Kai, Yoshiaki Browse this author →KAKEN DB | | Kadowaki, Kohmei Browse this author →KAKEN DB | | Kobayashi, Shiho Browse this author →KAKEN DB | | Yamashita, Yoh Browse this author →KAKEN DB | | Kasai, Akihide Browse this author →KAKEN DB |
| Keywords: | anthropogenic activity | | coastal water bodies | | environmental DNA metabarcoding | | estuary | | land use | | actividad antropogenica | | cuerpos de agua costeros | | estuario | | metasecuenciacion de ADN ambiental | | uso de suelo |
| Issue Date: | 2-Mar-2022 |
| Publisher: | John Wiley & Sons |
| Journal Title: | Conservation Biology |
| Volume: | 36 |
| Issue: | 3 |
| Start Page: | e13847 |
| Publisher DOI: | 10.1111/cobi.13849 |
| Abstract: | 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 R-2 = 43.9% of total variance, df = 5, F = 5.3843, p = 0.0001). The number of red-listed species increased from 3 to 11 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/84244 |
| Appears in Collections: | 水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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