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Habitat associations of wood frogs (Rana sylvatica), and effects of fragmentation, in boreal mixedwood forests

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dc.contributor.author Wind, Elke
dc.date.accessioned 2009-03-09T19:27:02Z
dc.date.available 2009-03-09T19:27:02Z
dc.date.copyright 1996 en
dc.date.issued 2009-03-09T19:27:02Z
dc.identifier.uri http://hdl.handle.net/2429/5758
dc.description.abstract I studied the habitat associations of wood frogs (Rana sylvatica) and fragmentation in boreal mixedwood forests of north-central Alberta. I sampled wood frogs, measured habitat characteristics, and assessed the general wetness of 10 sites from 1993 to 1995. The 10 sampling sites were in continuous forest in 1993, but through forest harvesting, six of these sites were made isolated fragments surrounded by 200-m wide clear cuts in 1994. The abundance of wood frogs decreased and average body length increased within 10-ha fragments two years post-harvesting compared to 100-ha and control sites. Forest fragmentation reduces the number of wood frogs, especially impacting small individuals, but the presence of wet patches within a site may mitigate the effects. Analyses of habitat indicate that wood frogs are associated with some characteristics of boreal mixedwood forests, perhaps most closely related to coarse woody material (CWM) approximately 5<11 cm in diameter. CWM of this size class is correlated with trembling aspen {Populus tremuloides) that is 23<38 cm diameter at breast height (dbh). I recommend further research into the effects of timber harvesting on migration and dispersal of amphibians, and for determining habitat requirements of amphibians at stand and landscape levels in boreal mixedwood forests. en
dc.format.extent 3326199 bytes
dc.format.mimetype application/pdf
dc.language.iso eng en
dc.relation.ispartof Retrospective Theses and Dissertations, 1919-2007 en
dc.relation.ispartofseries UBC Retrospective Theses Digitization Project [http://www.library.ubc.ca/archives/retro_theses/]
dc.title Habitat associations of wood frogs (Rana sylvatica), and effects of fragmentation, in boreal mixedwood forests en
dc.type Text
dc.degree.name Master of Science - MSc en
dc.degree.discipline Forestry en
dc.degree.grantor University of British Columbia
dc.date.graduation 1997-05 en
dc.type.text Thesis/Dissertation en
dc.description.affiliation Forestry, Faculty of en
dc.degree.campus UBCV en
dc.description.scholarlevel Graduate en

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