Avian Diversity in Relation to Elevation, Habitat, and Climate Change in the Mealy Mountains, Labrador

In 2007 and 2008, avian richness and abundance were estimated using standard point count methods (n=76 in 2007 and n = 114 in 2008). All birds within 100 m radius of a fixed point were identified. Point counts were separated by 300 m and were surveyed twice from 25 June to 13 July. Point counts ranged in elevation from 500-900 masl. Habitat type, vegetation composition and structure were measured on all point counts. Our findings suggest that elevation plays a strong role in structuring bird communities, and that Rotenberry's hypothesis that birds are influenced by vegetation structure at larger spatial scales (among habitat) and by composition at more local scales (within habitat) is largely true in this system. Given the strong impact of elevation on vegetation structure and bird communities, we note that for bird species whose near-southernmost populations are found in the Mealy Mountains, climate change is likely to have a strong negative effect as alpine tundra habitat is lost. Further, forest-affined species are likely to benefit from the increased treecover as treeline moves poleward and upward.

Identifier
Source https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=865
Metadata Access http://www.polardata.ca/oai/provider?verb=GetRecord&metadataPrefix=fgdc&identifier=865_fgdc
Provenance
Creator Harper, Karen; Lewis, Keith; Hermanutz, Luise; Starzomski, Brian
Publisher Canadian Cryospheric Information Network
Contributor Polar Data Catalogue
Publication Year 2015
Rights Research programs, CCIN, or ArcticNet take no liability for the use or transmission of this data
OpenAccess true
Contact lhermanu(at)mun.ca; pdc(at)uwaterloo.ca
Representation
Language English
Format Computer file
Discipline Environmental Research
Spatial Coverage (-58.980W, 53.580S, -58.660E, 53.630N)
Temporal Coverage Begin 2007-07-02T00:00:00Z
Temporal Coverage End 2008-07-30T00:00:00Z