A Comparison of Fish Kill Counting Procedures on a Small, Narrow Stream
- 1 February 1999
- journal article
- Published by Oxford University Press (OUP) in North American Journal of Fisheries Management
- Vol. 19 (1) , 209-214
- https://doi.org/10.1577/1548-8675(1999)019<0209:acofkc>2.0.co;2
Abstract
Six teams tested recommended procedures for estimating fish kill magnitude during a simulated fish kill in a small east Texas stream. Dead fish were added to the stream and counted 16 h later using accepted guidelines for sampling and counting dead fish. Thirty-one percent of the 943 dead fish that were initially placed in the stream remained when teams counted fish. The highest estimate of dead fish included only 39% of the total number of dead fish added to the stream. Independent estimates were moderately variable (mean = 308, SD = 54) and accurate when compared with the number of carcasses remaining in the stream (N = 291) at the time of the investigation. Small individuals (35 cm TL) and more abundant species. Counts involving fewer fish resulted in a greater underestimation of fish killed than did counts of larger numbers of fish. Complete enumeration gave the most accurate es...Keywords
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