Evaluation of the Incremental Methodology for Recommending Instream Flows for Fishes
- 1 July 1982
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 111 (4) , 413-445
- https://doi.org/10.1577/1548-8659(1982)111<413:eotimf>2.0.co;2
Abstract
Application of the “incremental methodology” is limited in many situations because quantitative information on microhabitat preferences of fishes is scarce, and because few field tests of the validity of the assumptions have been conducted. In this study, two critical assumptions were tested and the incremental methodology was applied in a warmwater stream in southeast Oklahoma. Habitat-suitability curves were developed for the freckled madtom Noturus nocturnus, the central stoneroller Campostoma anomalum, and the orangebelly darter Etheostoma radiosum. The assumption that depth, velocity, and substrate are perceived independently in the selection of microhabitats by these fishes was tested. The relation between standing stock and usable habitat (weighted usable area) was then investigated for these species as well as for adult and juvenile smallmouth bass Micropterus dolomieui. Fish population estimates were made quarterly over 2 years at four study sites concurrent with estimates of weighted us...Keywords
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