QUANTIFICATION OF DAILY PEAK HYDROPOWER EFFECTS ON AQUATIC FAUNA AND MANAGEMENT TO MINIMIZE ENVIRONMENTAL IMPACTS

被引：181
作者：
MOOG, O
机构：
[1] Department of Hydrobiology, University of Agriculture, Vienna, A-1180
来源：
REGULATED RIVERS-RESEARCH & MANAGEMENT | 1993年 / 8卷 / 1-2期
关键词：
AUSTRIA; FISH; BENTHIC INVERTEBRATES; RIVER MANAGEMENT; HYDROELECTRIC POWER GENERATION; PULSE RELEASES;
D O I：
10.1002/rrr.3450080105
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The effects of intermittent power generation on the fish fauna and benthic invertebrates of several Austrian rivers ave been investigated quantitatively. In contrast to the more or less local adverse effects of impoundments or stream channelization, artificial flow fluctuations generally disturb a long section of a given river. Within all the river sections investigated, a breakdown of the benthic invertebrate biomass of between 75 and 95% was observed within the first few kilometres of river length. A reduction of between 40 and 60%. of biomass compared with undisturbed areas could be detected within the following 20-40 km. The reduction of the fish fauna is within the same order of magnitude and correlates well with the amplitude of the flow fluctuations. Several reasons for the breakdown are summarized and proposals for the minimization of these detrimental effects of artificial short-term fluctuations are given.
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页码：5 / 14
页数：10
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