Abstract
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.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
