The Relationships between Invertebrate Drift and Salmonid Populations in the Matamek River, Quebec, Below a Lake
- 1 July 1975
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 104 (3) , 529-535
- https://doi.org/10.1577/1548-8659(1975)104<529:trbida>2.0.co;2
Abstract
The amount of daily invertebrate drift in the Matamek River varied both seasonally and down the length of the river. From June to September 1973, the volume of drift was about eight times greater in June than in August. Filter feeding insects and planktonic crustacea were more numerous at the upstream station near a lake, than at a station 4 km downstream. Larvae of net‐spinning Trichoptera were twice as abundant at the upstream station, and simuliid larvae four times as abundant. Numbers of zooplankton closely followed changes in water level, and were highest in early summer and the fall, and were lowest in August. The salmonid bio‐mass was at least four times greater at the upstream station than the lower one, most likely the result of a greater abundance of insect larvae suitable as food nearer the lake.This publication has 0 references indexed in Scilit: