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Short‐term habitat use by young grayling, Thymallus thymallus L., under variable flow conditions in an experimental stream
Author(s) -
VALENTIN S.,
SEMPESKI P.,
SOUCHON Y.,
GAUDIN P.
Publication year - 1994
Publication title -
fisheries management and ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 55
eISSN - 1365-2400
pISSN - 0969-997X
DOI - 10.1111/j.1365-2400.1970.tb00006.x
Subject(s) - grayling , fish <actinopterygii> , term (time) , habitat , ecology , flow (mathematics) , biology , fishery , environmental science , hydrology (agriculture) , mathematics , geology , physics , geometry , geotechnical engineering , quantum mechanics
In an experimental stream containing available refuge zones, moderate and instantaneous flow variations did not cause high mortality or substantial increase in downstream migration of 2‐month‐old grayling, Thymallus thymallus L. Fish were able to react rapidly to spate simulations by a change in space utilization determined by changes in water velocity patterns. Reaction of fish to these experimental flow variations corresponded to a refuge strategy, i.e. seeking shelter and minimizing the distance to find it.