Establishing minimum temperature tolerance limits for freshwater fishes
- Environmental Protection Agency, Duluth, MN (United States)
- Computer Sciences Corp., Duluth, MN (United States)
The maximum temperature tolerances of 57 freshwater fish species has been estimated by matching existing stream temperature measurements with fish collection records. These estimates are consistent with other kinds of temperature requirements data that come mostly from laboratory tests. The authors have only recently begun to explore the feasibility of estimating low temperature tolerances from these kinds of field data. Low temperature tolerances, which will control the northward range extensions of warm water fishes under conditions of global warming, are more difficult to estimate than maximum tolerances because they often are not a function of a brief exposure to a particular mortal level, but are determined by the interaction of weeks or months exposure to relatively stable temperatures near zero. Furthermore, very little laboratory or experimental field data are available with which to compare estimates of low temperature tolerance estimates derived from the field data bases. The presentation will describe the procedure used to generate the low tolerance estimates, will relate these to the limited literature data, and will illustrate how they can be integrated with the results of lake and stream temperature and D.O. prediction models to estimate the effects of climate change on fish thermal habitat.
- OSTI ID:
- 367553
- Report Number(s):
- CONF-9511137-; ISBN 1-880611-03-1; TRN: IM9640%%299
- Resource Relation:
- Conference: 2. Society of Environmental Toxicology and Chemistry (SETAC) world conference, Vancouver (Canada), 5-9 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Second SETAC world congress (16. annual meeting): Abstract book. Global environmental protection: Science, politics, and common sense; PB: 378 p.
- Country of Publication:
- United States
- Language:
- English
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