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Hesselgren, Jenny and Ingesdotter, Linnea, 2012. Utvärdering av den nationella databasen över åtgärder i vatten i fem svenska huvudavrinningsområden. First cycle, G2E. Uppsala: SLU, Dept. of Aquatic Sciences and Assessment

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Abstract

Restoration projects are planned and carried out in order to reduce the impact due to anthropogenic influence and to achieve at least good ecological status according to the EU Water Framework Directive. The resilience effort of such restorations is however ambiguous.

The aim of this study was to evaluate the potential of follow up restoration measures in Swedish lakes and streams. In particular, we visualized the geographical spread of restoration measures in Sweden and quantified the different types of measures that were implemented so far. Further, we evaluated the extent of sampling of biological factors before and after the restoration measures have occurred. For the purpose of our study, we used the recently compiled national database of restoration measures in Swedish lakes and streams. We focused our study on five catchments; Emån and Mörrumsån in southern Sweden and Lögdeälven, Sävarån and Umeälven in the northern Sweden.

The results show that the geographic spread of restoration measures differed between the northern and the southern catchments. The restoration measures in the northern catchments showed a distinct pattern with mainly fish ways and biotope treatment. This was not the case in the southern catchments, where a variety of measures was used.
The results also showed that instead of proper follow-ups (including studies before the restoration measures were preformed), it was more common to only have subsequent sampling of biological factors. Hence, in most cases no conclusions on the actual effectiveness of the restoration measures can be drawn.

Main title:Utvärdering av den nationella databasen över åtgärder i vatten i fem svenska huvudavrinningsområden
Authors:Hesselgren, Jenny and Ingesdotter, Linnea
Supervisor:Ecke, Frauke
Examiner:Johnson, Richard
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2012
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:NK001 Biology and Environmental Science - Bachelor's Programme 180 HEC
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Keywords:akvatiska system, avrinningsområden, biotopvård, fisktrappa, restaurering
URN:NBN:urn:nbn:se:slu:epsilon-s-1601
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-1601
Subjects:Aquatic ecology
Water resources and management
Language:Swedish
Deposited On:04 Sep 2012 07:43
Metadata Last Modified:04 Sep 2012 07:43

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