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Conference paper - Peer-reviewed, 2013

Characteristics of anadromous whitefish (Coregonus lavaretus (L.)) rivers in the Gulf of Bothnia.

Larsson, Stefan; Byström, Pär; Berglund, Johnny; Carlsson, Ulf; Veneranta, Lari; Larsson, Sylvia; Hudd, Richard

Abstract

In order to study anadromous whitefish spawning river requirements, we sampled 41 rivers in the Gulf of Bothnia for newly hatched whitefish larvae for one to three consecutive years. Chemical and morphological data (e. g. flow rate, topography, pH, estuary fetch and distance to coastal sandy areas) were collected for each river. Newly-hatched whitefish were caught in 19 rivers whereas whitefish were not confirmed present in 22 rivers. By applying partial least squares discriminant analysis (PLS-DA), data for rivers confirmed to support whitefish were contrasted with data for rivers in which whitefish were not found. The single most important factor was annual average water flow rate. Whitefish larvae were observed in 93% of the rivers with annual mean flow rate > 5 m3 s-1 (N = 14). In contrast, newlyhatched whitefish were only found in 22% of the smaller rivers (N = 27).

Published in

Advances in Limnology
2013, volume: 64, pages: 189-201
Book title: Biology and Management of Coregonid Fishes - 2011
ISBN: 978-3-510-47066-2
Publisher: Schweizerbart Science Publishers

Conference

11th International Symposium on the Biology and Management of Coregonid Fishes

Authors' information

Larsson, Stefan
Byström, Pär
Umeå University
Berglund, Johnny
Carlsson, Ulf
County Administrative Board of Västerbotten
Veneranta, Lari
Larsson, Sylvia
Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology
Hudd, Richard
Finnish Game and Fisheries Research Institute

UKÄ Subject classification

Fish and Aquacultural Science

Publication Identifiers

DOI: https://doi.org/10.1127/1612-166X/2013/0064-0007

URI (permanent link to this page)

https://res.slu.se/id/publ/50582