Extinction rates of North American freshwater fauna
Extinction rates of North American freshwater fauna
复制标题
DOI：
10.1046/j.1523-1739.1999.98380.x
复制
发表时间：
1999-10-01
影响因子：
6.3
通讯作者：
Rasmussen, JB
中科院分区：
文献类型：
--
作者：
Ricciardi, A;Rasmussen, JB
自1900年以来，北美洲已有123种淡水动物被记录为灭绝。另外还有数百种鱼类、软体动物、小龙虾和两栖动物被认为处于濒危状态。利用指数衰减模型，我们得出北美洲淡水动物近期和未来的灭绝速率比陆地动物高五倍。假设濒危的淡水物种在下个世纪无法存活，我们的模型预测未来每十年的灭绝率为4%，这表明北美洲温带淡水生态系统物种的减少速度与热带森林一样快。
Since 1900, 123 freshwater animal species have been recorded as extinct in North America. Hundreds of additional species of fishes, mollusks, crayfishes, and amphibians are considered imperiled. Using an exponential decay model, we derived recent and future extinction rates for North American freshwater fauna that are five times higher than those for terrestrial fauna. Assuming that imperiled freshwater species will not survive throughout the next century, our model projects a future extinction rate of 4% per decade, which suggests that North America's temperate freshwater ecosystems are being depleted of species as rapidly as tropical forests.