期刊
SCIENCE ADVANCES
卷 8, 期 4, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abl5486
关键词
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Diadromous fishes face various threats, leading to their critical endangerment, with overfishing, pollution, water withdrawals, aquaculture, non-native species, habitat degradation, overuse of hatcheries, and climate change being the major factors. However, the most feasible and effective solution lies in removing dams that hinder their migration.
Diadromous fishes migrate between freshwater and marine habitats to complete their life cycle, a complexity that makes them vulnerable to the adverse effects of current and past human activities on land and in the oceans. Many North American species are critically endangered, and entire populations have been lost. Major factors driving declines include overfishing, pollution, water withdrawals, aquaculture, non-native species, habitat degradation, over-zealous application of hatcheries designed to mitigate effects of other factors, and effects of climate change. Perhaps, the most broadly tractable and effective factors affecting diadromous fishes are removals of the dams that prevent or hinder their migrations, alter their environment, and often favor non-native biotic communities. Future survival of many diadromous fish populations may depend on this.
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