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Vårlekande fisk i Harrbäcken: En studie av artsammansättning och reproduktionslokaler
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2013 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The purpose of this study was to investigate what species of fish that uses Harrbäcken, a creek near Skellefteå city, for spawning and to produce suggestions on how it can be altered to work better as a reproduction place for coastal living fishes. To find out which species of fish that uses the creek for spawning the fish that swam up in Harrbäcken were recorded and places for spawning were surveyed. The water flow, pH and potential sulphidic clays were also examined to see if they could affect the fish. An automatic fish-counter and fish traps were used to record the fish. The water flow was relatively high in spring 2012 and it complicated the work to catch the fish. There were mostly pike (

Esox lucius) caught and only a small number of other fish species. One spawning place for pike was found. It may have been too cold for other fish species to start their spawning. The creek is probably affected by sulphidic clays but the pH was not so low that it was harmful for the fish. To improve the creek for coastal living fish it should be made more winding, the erosion must be stopped, plants must be planted next to the creek, spawning places

Place, publisher, year, edition, pages
2013.
Keyword [en]
creek, fish, restoration, Skellefteå
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:umu:diva-79309OAI: oai:DiVA.org:umu-79309DiVA: diva2:640503
External cooperation
Skellefteå kommun
Subject / course
Examensarbete i miljö och hälsoskydd
Educational program
Bachelor of Science in Environmental Health
Supervisors
Available from: 2013-08-13 Created: 2013-08-13 Last updated: 2013-08-13Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf