Evidence that Drift of Stream Benthos is Density Related
- 31 August 1967
- Vol. 48 (5), 855-857
- https://doi.org/10.2307/1933744
Abstract
The abundance of bottom fauna and of fauna in drift was studied in streams treated with DDT at various times in the past. Recovery of the bottom fauna was found to be rapid, but that of drift was delayed. The relationship of quantity of drift to the increasing bottom standing crop during recovery from spray effects was found to be curvilinear. This suggested that drift is a density-related process. Possible mechanisms to explain drift are discussed, and the conclusions of earlier reports on recovery of streams following insecticidal treatment are questioned.This publication has 5 references indexed in Scilit:
- Production Rate, Population Density, and Drift of a Stream InvertebrateEcology, 1966
- Interpretation of Invertebrate Drift in StreamsEcology, 1965
- Diurnal Periodicity in the Drift of Stream InvertebratesEcology, 1962
- Standing Crop and Drift of Stream Bottom OrganismsEcology, 1961
- Effects of a C-47 Airplane Application of DDT on Fishfood Organisms in Two Pennsylvania WatershedsThe American Midland Naturalist, 1953