MODIFICATION OF A STREAM BOTTOM AND ITS EFFECT ON THE INSECT FAUNA

1 July 1940

journal article
Published by Cambridge University Press (CUP) in The Canadian Entomologist

Vol. 72 (7) , 131-135
https://doi.org/10.4039/ent72131-7

Abstract

Studies of stream bottoms as a factor in the abundance of aquatic insects is usually accomplished by random sampling of different kinds of pools and riffles. Various types of apparatus and methods are used. Ludwig (1922) used the hand-dip method in his studies. The Needham trap (1928) has also been used extensively in the study of rocky riffles. Gersbacher (1937) used the Peterson trap (1911) and the Ekman dredge (1911) for sand and mud bottom pools. At present the United States Bureau of Fisheries one foot trap, described by Surber (1937), is very popular in studying riffles.

Keywords

This publication has 2 references indexed in Scilit:

Methods for the Study of Stream Communities
Ecology, 1929
Die Bodenfauna des Vättern, qualitativ und quantitative untersucht
International Review of Hydrobiology, 1915