Tree spatial pattern within the forest–tundra ecotone: a comparison of sites across Canada

Show simple item record

dc.creator Harper, Karen A., 1969-
dc.creator Danby, Ryan K.
dc.creator De Fields, Danielle L.
dc.creator Lewis, Keith P.
dc.creator Trant, Andrew J.
dc.creator Starzomski, Brian M.
dc.creator Savidge, Rodney
dc.creator Hermanutz, Luise
dc.date.accessioned 2020-09-28T13:58:15Z
dc.date.available 2020-09-28T13:58:15Z
dc.date.issued 2011-02-11
dc.identifier.issn 0045-5067
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/29417
dc.description Accepted Version en_CA
dc.description.abstract Although many studies have focused on factors influencing treeline advance with climate change, less consideration has been given to potential changes in tree spatial pattern across the forest–tundra ecotone. We investigated trends in spatial pattern across the forest–tundra ecotone and geographical variation in the Yukon, Manitoba, and Labrador, Canada. Tree cover was measured in contiguous quadrats along transects up to 100 m long located in Forest, Ecotone, and Tundra sections across the forest–tundra transition. Spatial patterns were analyzed using new local variance to estimate patch size and wavelet analysis to determine the scale and amount of aggregation. Compared with the Forest, tree cover in the Ecotone was less aggregated at most sites, with fewer smaller patches of trees. We found evidence that shorter trees may be clumped at some sites, perhaps due to shelter from the wind, and we found little support for regular spacing that would indicate competition. With climate change, trees in the Ecotone will likely become more aggregated as patches enlarge and new patches establish. However, results were site-specific, varying with aspect and the presence of krummholz (stunted trees); therefore, strategies for adaptation of communities to climate change in Canada’s subarctic forest would need to reflect these differences. en_CA
dc.description.provenance Submitted by Sherry Briere (sherry.briere@smu.ca) on 2020-09-28T13:58:15Z No. of bitstreams: 1 Harper_Karen_A_article_2011_a.pdf: 422547 bytes, checksum: 4a7b60086afc28154f27e743cf643226 (MD5) en
dc.description.provenance Made available in DSpace on 2020-09-28T13:58:15Z (GMT). No. of bitstreams: 1 Harper_Karen_A_article_2011_a.pdf: 422547 bytes, checksum: 4a7b60086afc28154f27e743cf643226 (MD5) Previous issue date: 2011-02-11 en
dc.language.iso en en_CA
dc.publisher Canadian Science Publishing en_CA
dc.relation.uri https://doi.org/10.1139/X10-221
dc.rights © 2011 NRC Canada
dc.subject.lcsh Ecotones -- Yukon
dc.subject.lcsh Ecotones -- Manitoba
dc.subject.lcsh Ecotones -- Newfoundland and Labrador
dc.subject.lcsh Taigas -- Canada
dc.subject.lcsh Tundras -- Canada
dc.subject.lcsh Spatial analysis (Statistics)
dc.subject.lcsh Climatic changes -- Canada
dc.title Tree spatial pattern within the forest–tundra ecotone: a comparison of sites across Canada en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Canadian Journal of Forest Research 41(3), 479-489. (2011) en_CA
 Find Full text

Files in this item


 

Copyright statement:

 
© 2011 NRC Canada
 
Published Version: https://doi.org/10.1139/X10-221
 
 

This item appears in the following Collection(s)

Show simple item record