The Macroinvertebrate Community in a Nature-like Fishway with Habitat Compensation Properties
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Nature-like fishways are often constructed to restore connectivity in streams exploited for hydropower. They also have the potential to compensate for important habitats that have been degraded or lost. The aim of this thesis was to improve knowledge of the concept of nature-like fishway design, with special focus on their habitat compensation potential. This was done by comparing a nature-like fishway with four different habitat types, termed the biocanal, to six nearby natural reference creeks. In paper I the macroinvertebrate colonization of the biocanal was studied and the community composition was compared to that of the natural reference creeks.
Furthermore, the potential for the biocanal to contain a diverse macroinvertebrate fauna was investigated. The results showed that the species composition of the benthic fauna in the biocanal was approaching that of the reference creeks and that the different habitat types in the biocanal contributed to the increased family diversity. In paper II the functional organization of the biocanal was studied using the functional feeding group approach. The results showed that after two years, the functional organization in the biocanal resembles that of the natural reference creeks.
Place, publisher, year, edition, pages
Karlstads universitet, 2012.
Karlstad University Studies, ISSN 1403-8099 ; 2012:48
nature-like fishway, biodiversity, macroinvertebrates, functional feeding groups
Research subject Biology
IdentifiersURN: urn:nbn:se:kau:diva-15116ISBN: 978-91-7063-455-0OAI: oai:DiVA.org:kau-15116DiVA: diva2:559280
2012-12-20, 1B364, Karlstads Universitet, Karlstad, 10:15 (English)
Brittain, John, Senior Research Scientist and Professor
Calles, Olle, LektorÖsterling, Martin, LektorSkurdal, Jostein, Adjunct Professor
List of papers