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Characteristics of anadromous whitefish (Coregonus lavaretus (L.)) rivers in the Gulf of Bothnia
- Article/chapterEnglish2013
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Numbers
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LIBRIS-ID:oai:DiVA.org:umu-85574
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ISBN:9783510470662
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-85574URI
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https://doi.org/10.1127/1612-166X/2013/0064-0007DOI
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https://res.slu.se/id/publ/50582URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:kon swepub-publicationtype
Notes
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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 m(3) s(-1) (N = 14). In contrast, newly-hatched whitefish were only found in 22% of the smaller rivers (N = 27).
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Byström, PärUmeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum ; EcoChange(Swepub:umu)paby0001
(author)
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Berglund, Johnny
(author)
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Carlsson, Ulf
(author)
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Veneranta, Lari
(author)
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Larsson, SylviaSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology(Swepub:slu)50852
(author)
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Hudd, Richard
(author)
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Umeå universitetInstitutionen för ekologi, miljö och geovetenskap
(creator_code:org_t)
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Sveriges lantbruksuniversitet
Related titles
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In:BIOLOGY AND MANAGEMENT OF COREGONID FISHES - 201164, s. 189-2019783510470662
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In:Advances in Limnology64, s. 189-2011612-166X
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