Colonization of artificial substrates by benthos in a second-order high altitude river in Kenya

An investigation on the colonization of artificial substrate baskets by benthos was carried out in the Naro Moru River, a second-order high altitude river in Kenya, from November, 1986 to October, 1987. Simuliidae dominated the colonizing benthos. The mean ( plus or minus 95% CL) maximum colonizatio...

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Bibliographic Details
Published in:Hydrobiologia 1995-07, Vol.308 (3), p.229-234
Main Author: MATHOOKO, J. M
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
Diptera
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
simuliidae
Synecology
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Summary:An investigation on the colonization of artificial substrate baskets by benthos was carried out in the Naro Moru River, a second-order high altitude river in Kenya, from November, 1986 to October, 1987. Simuliidae dominated the colonizing benthos. The mean ( plus or minus 95% CL) maximum colonization time was achieved after 9.63 plus or minus 1.57 days. The highest mean diversity (H') occurred after 6 days of exposure whilst the highest mean H' sub(maximum), evenness (J') and species richness (s) were achieved after 10, 8 and 10 days respectively. The benthos arrival rate (AR) declined exponentially with time. The changes in benthos departure rate (DR) with time was insignificant. Equilibrial state (AR:DR = 1.0) was not achieved in the present study.
ISSN:0018-8158
1573-5117
DOI:10.1007/BF00006874