The effect of the impoundment of Lake Kainji, Nigeria, on the indigenous species of mormyrid fishes
作者:
B. F. BLAKE,
期刊:
Freshwater Biology
(WILEY Available online 1977)
卷期:
Volume 7,
issue 1
页码: 37-42
ISSN:0046-5070
年代: 1977
DOI:10.1111/j.1365-2427.1977.tb01655.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
SUMMARY.Changes in the numbers and species composition of mormyrid fishes since the impoundment of the Niger (Lake Kainji) are analysed. An initial decline after impoundment appears to have been reversed and these fish are now increasing. The increase is, however, restricted to a few species only; many forms common in the river are still declining or have disappeared altogether. Marked seasonal variations in abundance are described and possible explanations discussed.
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