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Short-term responses of beetle assemblages to wildfire in a region with more than 100 years of fire suppression
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies.
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies.
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies.
Department of Ecology and Environmental Science, Umeå University.
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2011 (English)In: Insect Conservation and Diversity, ISSN 1752-458X, E-ISSN 1752-4598, Vol. 4, no 2, p. 142-151Article in journal (Refereed) Published
Abstract [en]

1. Suppression of wildfires in boreal landscapes has become widespread and has seriously affected many fire favoured species. However, little is known about the response of organism assemblages to large wildfires in regions with a long history of effective fire suppression, such as Scandinavia.2. We studied the short-term effects of a >1600 ha wildfire on beetle assemblages in northern Sweden. The first summer after fire, beetles were sampled in 12 sites using 36 large window traps, half in old pine forest stands in the burned area and half in similar, but unburned control stands. The entire beetle assemblage and eight subgroups were analysed: saproxylics, non-saproxylics, moderately fire favoured, strongly fire favoured, fungivores, predators, cambium consumers and red-listed species.3. Species composition differed markedly between burned and unburned forests in all nine groups. Furthermore, beetle abundance was higher in the burned area for the entire assemblage and for saproxylics, both groups of fire favoured species, predators and cambium consumers. Species number was higher only for non-saproxylics, strongly fire favoured species and cambium consumers.4. Our results show that wildfire has rapid and strong effects on a wide range of beetles. However, we only trapped two individuals of fire-dependent beetles, which may suggest a lack of such species in the region, possibly due to >100 years of fire suppression. At the regional scale, the studied wildfire may potentially increase the abundance of these beetles after a longer period of reproduction in the burned area.

Place, publisher, year, edition, pages
2011. Vol. 4, no 2, p. 142-151
National Category
Ecology
Research subject
Landscape Ecology
Identifiers
URN: urn:nbn:se:ltu:diva-14935DOI: 10.1111/j.1752-4598.2010.00114.xISI: 000289251300008Scopus ID: 2-s2.0-79953804555Local ID: e5ecb0c0-fd41-11df-8b95-000ea68e967bOAI: oai:DiVA.org:ltu-14935DiVA, id: diva2:987908
Note
Validerad; 2011; 20101201 (fawa)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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