由于河流洄游减少，淡水鱼类数量锐减 81%
一份全面的全球报告发现，淡水洄游鱼类急剧减少，数量自 1970 年以来减少了约 81%。这些物种依赖于长而相连的河流，但水坝和人类压力正在切断它们的路线。数百个...
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来源: Science Daily
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A sweeping global report finds that migratory freshwater fish are in steep decline, with populations down roughly 81% since 1970. These species depend on long, connected rivers, but dams and human pressures are cutting off their routes. Hundreds of species now need coordinated international protection. Experts say restoring river connectivity is critical to preventing further collapse.