KochRaniusDrobyshevEtAl2012

Référence

Koch Widerberg, M., Ranius, T., Drobyshev, I., Nilsson, U., Lindbladh, M. (2012) Increased openness around retained oaks increases species richness of saproxylic beetles. Biodiversity and Conservation, 21(12):3035-3059. (Scopus )

Résumé

The decrease of old deciduous trees in northern Europe is a threat to the saproxylic fauna. In northern Europe, oak sustains the highest richness of saproxylic invertebrates, among which beetles is a large group. In order to preserve species associated with old trees, it has become common practice in commercial forestry to retain such trees at final felling. However, to create beneficial conditions for species associated with retained trees, the surrounding plantation has to be managed with regard to their specific demands. In the case of oak-associated species, including many red-listed species, several studies have shown that light is an important factor. The aim of this study was to analyze the effects of increased openness around oaks (Quercus robur) in spruce plantations (Picea abies) on species richness and abundance of oak-associated saproxylic beetles. The study was performed in nine spruce plantations located in southern Sweden, with mature oaks standing in a gradient of canopy openness. Beetles were collected from 54 oaks from May to September during two seasons, using window traps. The analyses revealed that increased openness around oaks increases species richness and abundance of oak-associated beetles. By including insolation angle in the analysis, we found that it is mainly the degree of openness directed south from the oak that has positive effects on beetle richness. These findings imply that it is desirable to maintain an open area around retained oaks, and that this area should be placed on the southern side of the oak to maximize the biodiversity benefit in relation to costs for the forest owner. © 2012 Springer Science+Business Media B.V.

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@ARTICLE { KochRaniusDrobyshevEtAl2012,
    AUTHOR = { Koch Widerberg, M. and Ranius, T. and Drobyshev, I. and Nilsson, U. and Lindbladh, M. },
    TITLE = { Increased openness around retained oaks increases species richness of saproxylic beetles },
    JOURNAL = { Biodiversity and Conservation },
    YEAR = { 2012 },
    VOLUME = { 21 },
    PAGES = { 3035-3059 },
    NUMBER = { 12 },
    NOTE = { cited By (since 1996)6 },
    ABSTRACT = { The decrease of old deciduous trees in northern Europe is a threat to the saproxylic fauna. In northern Europe, oak sustains the highest richness of saproxylic invertebrates, among which beetles is a large group. In order to preserve species associated with old trees, it has become common practice in commercial forestry to retain such trees at final felling. However, to create beneficial conditions for species associated with retained trees, the surrounding plantation has to be managed with regard to their specific demands. In the case of oak-associated species, including many red-listed species, several studies have shown that light is an important factor. The aim of this study was to analyze the effects of increased openness around oaks (Quercus robur) in spruce plantations (Picea abies) on species richness and abundance of oak-associated saproxylic beetles. The study was performed in nine spruce plantations located in southern Sweden, with mature oaks standing in a gradient of canopy openness. Beetles were collected from 54 oaks from May to September during two seasons, using window traps. The analyses revealed that increased openness around oaks increases species richness and abundance of oak-associated beetles. By including insolation angle in the analysis, we found that it is mainly the degree of openness directed south from the oak that has positive effects on beetle richness. These findings imply that it is desirable to maintain an open area around retained oaks, and that this area should be placed on the southern side of the oak to maximize the biodiversity benefit in relation to costs for the forest owner. © 2012 Springer Science+Business Media B.V. },
    AUTHOR_KEYWORDS = { Canopy openness; Coleoptera; Management; Quercus; Retention trees; Saproxylic },
    CODEN = { BONSE },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s10531-012-0353-8 },
    ISSN = { 09603115 },
    KEYWORDS = { abundance; beetle; coniferous tree; deciduous tree; forest management; forestry practice; plantation forestry; saproxylic organism; species diversity; species richness; trap (equipment), Sweden, Coleoptera; Invertebrata; Picea; Picea abies; Quercus; Quercus robur },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84870376410&partnerID=40&md5=de452caef66c0a3f981553ad3bbdfc98 },
}

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