Eutrophication and fish biodiversity in Finnish lakes

Eutrophication and fish biodiversity in Finnish lakes
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DOI:
10.1080/03680770.1998.11901225
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发表时间:
2000-04
期刊:
Internationale Vereinigung für theoretische und angewandte Limnologie: Verhandlungen
影响因子:
--
通讯作者:
H. Helminen;J. Karjalainen;M. Kurkilahti;M. Rask;J. Sarvala
H. Helminen;J. Karjalainen;M. Kurkilahti;M. Rask;J. Sarvala
中科院分区:
其他
文献类型:
--
作者:
H. Helminen;J. Karjalainen;M. Kurkilahti;M. Rask;J. Sarvala

文献摘要

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营养负荷过高造成的富营养化是影响芬兰水生生态系统的一个主要因素。在这项工作中,我们比较了不同营养状态的湖泊中鱼类的生物多样性,以确定在富营养化下发生了什么变化。我们的工作是基于使用标准多网目刺网收集的数据集。在富营养化的水域中,鲤鱼占主导地位,但我们也发现,在富营养化的湖泊中,即使是短期的扰动,如缺氧,也可能导致物种多样性的突然变化。从本质上讲,富营养化通过减少湖泊的鱼类生物多样性而对湖泊产生负面影响。这项工作是芬兰生物多样性研究方案光纤(1997-2000年)的一部分。
Summary Eutrophication due to excessive nutrient loading is a major factor affecting Finnish aquatic ecosystems. In this work we compared the biodiversity of fish in lakes of different trophic status to determine what changes occur under eutrophication. Our work was based on data sets collected using standard multimesh gillnets. In eutrophicated waters cyprinids dominate but we found also that in hypereutrophic lakes even a short-term perturbation, such as oxygen deficiency, may lead to sudden changes in species diversity. In essence, eutrophication has a negative impact on lakes by decreasing their fish biodiversity. This work is part of the Finnish Biodiversity Research Programme FIBRE (1997–2000).