FWS/OBS-80/14

This report describes an investigation of the effects of stream channelization on fish and macro-invertebrates in low gradient reaches of Blacksmith Fork River and the Logan River in the floodplain of Cache Valley in northern Utah. Channelization adversely affected both fish and macro-invertebrate populations and biomass, with the severity of impact directly related to the amount and duration of disturbance of the physical habitat

Annotated bibliography on the ecology of the Lake Washington drainage

This annotated bibliography contains 392 published and unpublished references that pertain to the natural resources in the Lake Washington watershed, with particular emphasis on the aquatic environment. All references are indexed by keywords

Development of a systematic sampling scheme for the Lake Washington drainage

To determine productivity of fish, we will require an estimate of relative abundance that can be expanded later into estimates of biomass. Our work has shown that much of the fish production in Lake Washington is in the form of nonsalmonid and nongame species, such as peamouth and northern squawfish. As the title of our proposal indicates, we are attempting to develop a systematic sampling scheme that eventually will allow us to estimate the relative abundance of the key species, or perhaps all 35 species, of fish that inhabit the drainage and to expand these estimates into terms of biomass or energy

A portable vertical gill-net system

Studies of vertical as well as horizontal distributions of fishes often require the use of gill nets hung vertically from the surface to the bottom. By using gill nets in this fashion it is possible to sample the entire water column as a continuous variable

GROWTH AND REPRODUCTION OF THE FLANNELMOUTH SUCKER, CATOSTOMUS LATIPINNIS, IN THE UPPER COLORADO RIVER BASIN, 1975-76

Volume: 45Start Page: 281End Page: 28