Fish Populations in Alabama Rivers and Impoundments
- 1 January 1954
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 83 (1) , 47-57
- https://doi.org/10.1577/1548-8659(1953)83[47:fpiara]2.0.co;2
Abstract
Fish populations in large Alabama rivers and large impoundments were sampled by using emulsifiable rotenone at a concentration of 1 p.p.m. which is applied to measured areas with pumps and hose. Large channel, blue, and flathead catfishes appeared to be the principal piscivorous species in rivers. The ratios of the weight of forage fish to piscivorous fish and the percentages by weight of harvestable fish in the entire populations appeared similar to those in pond fish populations. The change of environment following impoundment of rivers caused large changes in the species composition of the stock. Pollution of rivers produced changes from balanced to unbalanced fish populations. In one river a polluted area had a smaller standing crop than did an unpolluted portion of the same river, while in another, the polluted area had the larger stock.This publication has 0 references indexed in Scilit: