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Gewählte Publikation:

Zubek, J; Stitzel, ML; Ucar, D; Plewczynski, DM; .
(2016): Computational inference of H3K4me3 and H3K27ac domain length.
PeerJ. 2016; 4:e1750 FullText FullText_BOKU

Housing development beyond the urban fringe (i.e,, exurban development) is one of the fastest growing forms of land-use change in the United States. Exurban developmentxxxs attraction to natural and recreational amenities has raised concerns for conservation and lrepresents a potential threat to wildlife. Although forest-dependent species have been found particularly sensitive to low housing densities, it is unclear how the spatial distribution of houses affects forest birds. The aim of this study was to assess forest bird responses to changes in the spatial pattern of exurban development and also to examine species responses when forest loss and forest fragmentation were considered. We evaluated landscape composition around North American Breeding Bird Survey stops between 1986 and 2009 by developing a compactness index to assess changes in the spatial pattern of exurban development over time. Compactness was defined as a measure of how clustered exurban development was in the area surrounding each survey stop at each time period considered. We used Threshold Indicator Taxa Analysis to detect the response of forest and forest-edge species in terms of occurrence and relative abundance along the compactness gradient at two spatial scales (400-m land 1-km radius buffer). Our results showed that most forest birds and some forest-edge species were positively associated with high levels of compactness at the larger spatial scale; the proportion of forest in the surrounding landscape also had a significant effect when forest loss and forest fragmentation were accounted for. In contrast, the spatial configuration of exurban development was an important predictor of occurrence and abundance for only a few species at the smaller spatial scale. The positive response of forest birds to compactness at the larger scale could represent a systematic trajectory of decline and could be highly detrimental to bird diversity if exurban growth continues and creates more compacted development.
Autor*innen der BOKU Wien:
Suarez-Rubio Marcela

Find related publications in this database (Keywords)
Exurban growth
Low-density residential
Ecological effect zone
Urban fringe
Rural residential development
Forest fragmentation

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