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世界各地的气候都在发生变化,而其对生态系统的影响有所不同,这取决于这些变化的程度和性质。在北欧,专家预测在以后的50～100年间,年降雨量将有很大增加,并伴随有暴风雨和洪水泛滥。受害淡水珍珠蚌Margaritifera margaritifera(L.))的中心地在苏格兰,其很多种群可能会受到威胁。例如,大洪水已经显示其对贝类会产生负面影响,虽然这些随机事件在历史上少见,但由于气候的变化,它们现在可能会经常发生。贝类种群可能还受其他许多因素的影响,包括已经预测到的气候变化、海平面上升、可利用栖息地的变化、寄主鱼群和人类活动的变化等。本文解释了气候变化可能如何对M.margaritifera产生影响,并讨论了保护这一品种在管理上的一般原则。
The climate varies around the world, and its impact on the ecosystem varies, depending on the extent and nature of these changes. In northern Europe, experts predict that in the next 50 to 100 years, the annual rainfall will have greatly increased, accompanied by storms and flooding. The center of the victimized freshwater mussel Margaritifera margaritifera (L.) is in Scotland, where many of its populations may be at risk. For example, the floods have shown to have a negative impact on shellfish, and although these random events are rare in history, they may now occur frequently as a result of climate change. Shellfish stocks may also be affected by many other factors, including projected changes in climate, rising sea levels, changes in available habitats, changes in host fish stocks and human activities. This article explains how climate change may affect M. margaritifera and discusses the general principles governing the management of this species.