Yliopiston etusivulle Suomeksi På svenska In English Helsingin yliopisto

Spatial ecology of the three-toed woodpecker in managed forest landscapes.

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dc.contributor.author Pakkala,-T; Hanski,-I; Tomppo,-E en
dc.contributor.other Finnish Museum of Natural History, University of Helsinki, P.O. Box 17, FIN-00014, Helsinki, Finland. en
dc.date.accessioned 2007-06-12T14:55:29Z en
dc.date.accessioned 2009-06-17T14:02:41Z
dc.date.available 2007-06-12T14:55:29Z en
dc.date.available 2009-06-17T14:02:41Z
dc.date.issued 2002 en
dc.identifier.citation Silva-Fennica. 2002; 36(1): 279-288 en
dc.identifier.issn 0037-5330 en
dc.identifier.uri http://hdl.handle.net/1975/4898
dc.description.abstract The effects of landscape structure and forestry on the abundance and dynamics of boreal forest bird species have been studied widely, but there are relatively few studies in which the spatial structure and quality of the landscape have been related to the spatial ecology of bird species. In this paper, we present methods to measure territory and landscape quality for the three-toed woodpecker (Picoides tridactylus) and similar territorial forest bird species based on data from the Finnish multi-source national forest inventory and metapopulation theory. The three-toed woodpecker was studied with territory mapping within an area of 340 square km in southern Finland in 1987-2000. Altogether 195 breeding territory sites were observed. The spatial occurrence of the territories was aggregated, and the highest densities were observed in spruce (Picea abies)-dominated old-growth forest areas. Both territory and landscape quality had significant consequences for the occurrence of the three-toed woodpecker. The spatial patterning and permanence of breeding and non-breeding territories were influenced by a combination of spatial dynamics of the species and the quality of the landscape, the latter being much influenced by forestry. The landscape-level spatial occurrence of the three-toed woodpecker in the study area may represent source-sink dynamics. The results of this paper suggest the presence of threshold values at different spatial scales, which may determine the occurrence of the three-toed woodpecker and similar species in managed forest landscapes. en
dc.language English en
dc.publisher Helsinki, Finland: Finnish Society of Forest Science. en
dc.subject Picea-abies; Picidae- en
dc.subject Finland- en
dc.subject Picoides-tridactylus en
dc.subject Scandinavia-; Northern-Europe; Europe-; Developed-Countries; European-Union-Countries; OECD-Countries; Picea-; Pinaceae-; Pinopsida-; gymnosperms-; Spermatophyta-; plants-; Piciformes-; birds-; vertebrates-; Chordata-; animals-; Picoides-; Picidae- en
dc.subject.other breeding-places; forests-; habitat-selection; landscape-; old-growth-forests; population-density; population-dynamics en
dc.title Spatial ecology of the three-toed woodpecker in managed forest landscapes. en
dc.type Journal-article; Conference-paper en
dc.identifier.laitoskoodi B571151 fi
dc.creator.corporateName Metapopulaatiobiologian tutkimusryhmä (Bio- ja ympäristötieteiden laitos. Ekologia ja evoluutiobiologia) fi
dc.creator.corporateName Metapopulation Research Group (Department of Biological and Environmental Sciences. Ecology a nd Evolutionary Biology) en
dc.creator.corporateName Metapopulationsbiologi, Forskningsgruppen för (Institutionen för bio- och miljövetenskaper. Ekologi och evolutionsbiologi) sv

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