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Drift of Cisco and Whitefish Larvae in a Norwegian River
Author(s) -
Næsje Tor F.,
Jonsson Bror,
Sandlund Odd T.
Publication year - 1986
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1986)115<89:docawl>2.0.co;2
Subject(s) - spring (device) , fishery , larva , norwegian , coregonus , environmental science , ichthyoplankton , biology , oceanography , hydrology (agriculture) , ecology , fish <actinopterygii> , geology , physics , linguistics , philosophy , thermodynamics , geotechnical engineering
Larvae (eleutheroembryos) of cisco Coregonus albula and whitefish C. larvaretus started to drift downstream in the Gudbrandsdalslågen River concurrently with the beginning of the spring freshets each year, 1981–1983. The duration of yearly outdrift lasted 2–5 weeks in late April and May. The yearly maximum out‐drift was positively correlated with the rate of increase in water discharge, but not with water temperature during spring. Most larvae drifted downstream during night.