transparent gif


Ej inloggad.

Göteborgs universitets publikationer

Factors and scales potentially important for saproxylic beetles in temperate mixed oak forest

Författare och institution:
Niklas Franc (Zoologiska institutionen); Frank Götmark (Zoologiska institutionen); Bjørn Økland (-); Björn Nordén (Institutionen för växt- och miljövetenskaper); Heidi Paltto (Institutionen för växt- och miljövetenskaper)
Publicerad i:
Biological Conservation , 135 ( 1 ) s. 86-98
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
The influence of environmental factors on species richness and species composition may be manifested at different spatial levels. Exploring these relationships is important to understand at which spatial scales certain species and organism groups become sensitive to fragmentation and changes in habitat quality. At different spatial scales we evaluated the potential influence of 45 factors (multiple regression, PCA) on saproxylic oak beetles in 21 smaller broadleaved Swedish forests of conservation importance (woodland key habitats, WKH). Local amount of dead wood in forests is often assumed to be important, but two landscape variables, area of oak dominated woodland key habitats within 1 km of sites and regional amount of dead oak wood, were the main (and strong) predictors of variation in local species richness of oak beetles. The result was similar for red-listed beetles associated with oak. Species composition of the beetles was also best predicted by area of oak woodland key habitat within 1 km, with canopy closure as the second predictor. Despite suitable local quality of the woodland key habitats, the density of such habitat patches may in many areas be too low for long-term protection of saproxylic beetles associated with broadleaved temperate forests. Landscapes with many clustered woodland key habitats rich in oak should have high priority for conservation of saproxylic oak beetles.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Biologiska vetenskaper ->
Annan biologi
Biodiversity, Deciduous forest, Quercus, Dead wood, Coleoptera, Conservation
Postens nummer:
Posten skapad:
2007-02-22 11:14

Visa i Endnote-format

Göteborgs universitet • Tel. 031-786 0000
© Göteborgs universitet 2007