News Release

淡水湖的鱼营养级

Peer-Reviewed Publication

Proceedings of the National Academy of Sciences

科研人员报告说,加拿大Simcoe湖的148年的捕鱼记录表明,在一段商业捕鱼时期里,被捕获的鱼的平均营养级下降,这表明了高营养级的鱼的耗尽,而当捕鱼从商业转向休闲的时候,平均营养级开始恢复;这组作者说,鱼类放养以及入侵物种的引入也改变了这个湖的营养级指标。

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