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H.L. Buckley Ecology and Entomology Group, Soil, Plant and Ecological Sciences Division P.O. Box 84, Lincoln University, Canterbury, New Zealand

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Important predictors of the species richness of vascular plants and epiphytic lichens on Populus spp in the Canadian aspen parkland were determined. Plants and lichens were sampled on three scales within 100 treed patches within an area of less than 4 km2 (patch-scale and two within-patch scales). Small-scale species richness within patches was positively related to the number of species in the surrounding patch and a few measured environmental variables. This suggests that, at this scale, the species richness of these communities is limited by the availability of species in addition to local environmental conditions and species habitat preferences. For plant species richness, environmental variables that were related to light availability were most important, whereas for epiphytic lichens, variables that were related to moisture availability on trees were most important. This study adds to a growing body of literature showing that both small-scale and larger-scale processes affect species richness within communities.

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Community Ecology
Language English
Size A4
Year of
Foundation
2000
Volumes
per Year
1
Issues
per Year
3
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1585-8553 (Print)
ISSN 1588-2756 (Online)