FN Archimer Export Format PT J TI Effects of forest cover on richness of threatened fish species in Japan BT AF Lavergne, Edouard Kume, Manabu Ahn, Hyojin Henmi, Yumi Terashima, Yuki Ye, Feng Kameyama, Satoshi KAI, Yoshiaki Kadowaki, Kohmei Kobayashi, Shiho Yamashita, Yoh Kasai, Akihide AS 1:1,2,3,4;2:1,2;3:2,5;4:1,2;5:2;6:2,6;7:6;8:1;9:1,7;10:1;11:1,2;12:5; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:; C1 Kyoto University, Field Science Education and Research Center (FSERC) Kyoto ,Japan Kyoto University, Research and Educational Unit for Studies on Connectivity of Hills, Humans and Oceans Kyoto ,Japan Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin (LEMAR), Institut Universitaire Européen de la Mer (IUEM) Plouzané ,France Plastic@Sea 1 Avenue Pierre Fabre Banyuls‐sur‐Mer 66650, France Hokkaido University, Faculty of Fisheries Sciences Hakodate, Japan National Institute for Environmental Studies (NIES), Center for Environmental Biology and Ecosystem Tsukuba ,Japan Kyoto University, The Hakubi Center for Advanced Research, Graduate School of Agriculture Kyoto ,Japan C2 UNIV KYOTO, JAPAN UNIV KYOTO, JAPAN UBO, FRANCE PLASTIC@SEA, FRANCE UNIV HOKKAIDO, JAPAN NIES, JAPAN UNIV KYOTO, JAPAN UM LEMAR IN WOS Cotutelle UMR copubli-france copubli-int-hors-europe IF 6.3 TC 3 UR https://archimer.ifremer.fr/doc/00730/84246/89198.pdf https://archimer.ifremer.fr/doc/00730/84246/89199.xlsx https://archimer.ifremer.fr/doc/00730/84246/89200.docx LA English DT Article DE ;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 AB 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. PY 2022 PD JUL SO Conservation Biology SN 0888-8892 PU Wiley VL 36 IS 3 UT 000725083900001 DI 10.1111/cobi.13849 ID 84246 ER EF