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陈旧的水坝从河上拆除,对于野生生物来讲是好事。但在某些情况下,拆坝将会引起不可预见的问题,美国威斯康星麦迪逊大学的研究者们发现。Emily Stanley 是威斯康星麦迪逊大学湖沼研究中心的生物学家。她发现:随着坝的拆除,在使鱼类和轻舟恢复在水道中自由移动的同时,也造成一些营养物质的破坏性。她对威斯康星洲的 Baraboo河和 Koshkonong 小溪上的拆坝现场进行了研究,其成果发表在2002年8月的“生物科学”期刊上。
The old dam is removed from the river and is good for wildlife. In some cases, however, dismantling the dam will cause unforeseen problems, researchers at the University of Wisconsin-Madison discovered. Emily Stanley is a biologist at the Lake Marsh Research Center at the University of Wisconsin. She found that as the dam was dismantled, some nutrients were also devastating while allowing fish and canoes to resume their free movement in watercourses. She conducted a study on the dam breaking site on the Baraboo River and Koshkonong Creek in Wisconsin, the result of which was published in the August 2002 issue of Biological Sciences.