Effects of hydropower development on aquatic macrophytes in norwegian rivers: Present state of knowledge and some case studies
作者:
Bjørn Rørslett,
Marit Mjelde,
Stein W. Johansen,
期刊:
Regulated Rivers: Research&Management
(WILEY Available online 1989)
卷期:
Volume 3,
issue 1
页码: 19-28
ISSN:0886-9375
年代: 1989
DOI:10.1002/rrr.3450030104
出版商: John Wiley&Sons, Ltd
关键词: Aquatic macrophytes;Hydropower development;Rivers Norway
数据来源: WILEY
摘要:
AbstractA multitude of Norwegian rivers are managed for generating hydroelectric power (HEP). The hydrology of these hydrorivers changes in various ways which reflect the implemented HEP schemes. Increased winter flows and a concomitant lack of ice‐cover are features found downstream of power installations on many Norwegian hydrorivers.Our study objectives were (1) to assess the changes in aquatic macrophyte abundance subsequent to HEP development; and (2) to evaluate the environmental conditions under which nuisance growths of macrophytes are likely to occur. Towards these ends, Norwegian literature data were compiled and assessed. Some case studies are outlined showing the variety of situations under which prolific growths of macrophytes might result. Unfortunately, available data on macrophyte‐associated problems proved deficient in many respects. This occurred chiefly because most macrophyte studies are conducted either before, or after, an HEP scheme is completed. Evidently, no concerted efforts are made for assessing the likelihood of macrophyte‐dominated nuisance growth in the planning stage of a Norwegian HEP s
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