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Monitoring of butterflies within a landscape context in south-eastern Sweden
Linköping University, Department of Physics, Chemistry and Biology, Ecology . Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Ecology . Linköping University, The Institute of Technology.ORCID iD: 0000-0001-6128-1051
Linköping University, Department of Physics, Chemistry and Biology, Ecology . Linköping University, The Institute of Technology.
2010 (English)In: JOURNAL FOR NATURE CONSERVATION, ISSN 1617-1381, Vol. 18, no 1, 22-33 p.Article in journal (Refereed) Published
Abstract [en]

Monitoring of butterflies is often directed only towards grassland fauna. Species associated with other habitats, as well as the impact of the surrounding landscape, are often neglected. The aim with this study was, in contrast, to perform and evaluate a landscape-based monitoring method for butterflies in diverse habitats and more specifically to (i) evaluate the impact of environmental variables on butterfly abundance; (ii) compare the distribution of butterflies in different habitats; and (iii) analyse data from the study with the aim of improving the method. Eight randomly placed study sites (750 m x 750 m) located in south-eastern Sweden were used. The vegetation composition (tree cover, percentage of coniferous and deciduous forest, shrubs, dry, mesic, damp and wet land) inside the squares was analysed using aerial photos and habitats along transects were categorised in the field. The butterfly composition varied depending on the landscape composition. Tree cover had the largest impact on butterfly abundance with a negative relationship between abundance and increasing tree cover. The most species-rich habitats were other grasslands (abandoned fields and fallows), clear-cuts, semi-natural grasslands, and bogs, each habitat also harbouring unique species. Clear-cut was the habitat harbouring the highest abundance and other grasslands the highest diversity of butterflies. Semi-natural grasslands, where the nationally based monitoring of butterflies in Sweden currently is being performed, constitutes andlt;1% of the total land area in Sweden, indicating a current bias in monitoring directed towards only a part of the species pool. The landscape-based form of monitoring presented here can, if performed regularly, increase our knowledge of how structural changes of landscape affect butterflies and thereby improve conservation efforts.

Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam , 2010. Vol. 18, no 1, 22-33 p.
Keyword [en]
Conservation, Semi-natural grasslands, Landscape perspective, Lepidoptera, Rarefaction, Habitat
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-55519DOI: 10.1016/j.jnc.2009.02.001ISI: 000276645900004OAI: oai:DiVA.org:liu-55519DiVA: diva2:316234
Note
Original Publication: Dennis Jonason, Per Milberg and Karl-Olof Bergman, Monitoring of butterflies within a landscape context in south-eastern Sweden, 2010, JOURNAL FOR NATURE CONSERVATION, (18), 1, 22-33. http://dx.doi.org/10.1016/j.jnc.2009.02.001 Copyright: Elsevier Science B.V., Amsterdam http://www.elsevier.com/ Available from: 2010-04-30 Created: 2010-04-30 Last updated: 2014-10-08

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