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The use of two nature-like fishways by some fish species in the Swedish River Emån
Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
Karlstad University, Faculty of Social and Life Sciences, Department of Biology.ORCID iD: 0000-0002-3191-7140
2007 (English)In: Ecology of Freshwater FishArticle in journal (Refereed)
Abstract [en]

We studied the use of two nature-like fishways by 15 fish

species (N ¼ 240) in the River Emån in southern Sweden. Use of the fishways for both passage and as a habitat was studied by electrofishing, trap catches and PIT telemetry. Of the 187 PIT-tagged fish, 52 individuals

from 10 different species ascended one of the fishways for a total passage efficiency of 74%. For the five species that most frequently ascended the fishways, the passage efficiency was 100% for tench (Tinca tinca L.) and perch (Perca fluviatilis L.), 86% for chub (Leuciscus cephalus L.), 60% for burbot (Lota lota L.) and 50% for roach (Rutilus rutilus L.). Individuals that failed to pass the fishways were typically small cyprinids or species

that were assumed to have taken up residence in the fishways, such as juvenile brown trout (Salmo trutta L.) and burbot. The nature-like fishways have re-established longitudinal connectivity for most of the studied species and also functioned as rearing and winter habitat for a number of species

Place, publisher, year, edition, pages
Singapore: Blackwell Munksgaard , 2007.
Keyword [en]
nature-like fishways, passage efficiency, habitat function, cyprinidae, percidae
National Category
Biological Sciences
Research subject
Biology
Identifiers
URN: urn:nbn:se:kau:diva-24816OAI: oai:DiVA.org:kau-24816DiVA: diva2:598587
Projects
Fiskvägar och flödesregimåtgärder i reglerade vatten: konsekvenser för vattendragets produktivitet och för samhällsnyttan
Note

Distrubution: olle.calles@kau.se

Available from: 2013-01-22 Created: 2013-01-22 Last updated: 2015-11-12

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