Overfishing in the Baltic Sea basin in Russia, its impact on the pearl mussel, and possibilities for the conservation of riverine ecosystems in conditions of high anthropogenic pressure

Popov I. Yu.

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Overfishing in the Baltic Sea basin in Russia, its impact on the pearl mussel, and possibilities for the conservation of riverine ecosystems in conditions of high anthropogenic pressure

机译：俄罗斯波罗的海盆地的过度捕捞，对贻贝的影响以及在高人为压力条件下保护河流生态系统的可能性

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In recent studies nine populations of the freshwater pearl mussel have been described in the Baltic Sea basin in Russia. They are very scarce, although the condition of their habitats seems to be rather good. Overfishing of the host fish is a limiting factor for them. The number of salmon has decreased by at least 100 times over the past 200 years. Such a scale of decline tends to be hidden over time, and estimation of the normal conditions of the salmon-pearl mussel ecosystem becomes problematic. A significant increase in the number of salmon is necessary to prevent extinction of pearl mussels. Effective protected areas appear to be the only possibility for conservation of the pearl mussels and its host fish species.

机译：在最近的研究中，俄罗斯波罗的海流域描述了9种淡水珍珠贻贝。尽管栖息地条件似乎很好，但它们非常稀少。过度捕捞寄主鱼是它们的限制因素。在过去的200年中，鲑鱼的数量至少减少了100倍。随着时间的流逝，这种下降的规模趋于被掩盖，鲑鱼贝贻贝生态系统的正常状况的估计变得有问题。为了防止珍珠贻贝灭绝，必须大量增加鲑鱼的数量。有效的保护区似乎是保护贻贝及其寄养鱼类的唯一可能性。

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《Biology Bulletin》 |2017年第1期|39-44|共6页
作者
Popov I. Yu.;
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St Petersburg State Univ, Dept Appl Ecol, Fac Biol, Univ Skaya Nab 7-9, St Petersburg 199034, Russia;

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Overfishing in the Baltic Sea basin in Russia, its impact on the pearl mussel, and possibilities for the conservation of riverine ecosystems in conditions of high anthropogenic pressure

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