Local-Scale Association of Boreal Birds with Clearcuts Does Not Translate to the Landscape Scale
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Common Nighthawk and Eastern Whip-poor-will, species-at-risk, use clearcuts locally; however this has not been tested at landscape-scales. I asked: Are landscapes with more clearcut associated with higher occupancy of these species? Occurrence of neither species was significantly affected (n=49) by clearcuts in the surrounding landscape, at any spatial extent. However, Common Nighthawk occupancy was lower in landscapes with more, older clearcuts, and both species occupancy was higher in landscapes with more wetland, significantly for Eastern Whip-poor-will. I propose these species nest on clearcuts because they are like other open habitats (i.e. wetlands). However, clearcuts may offer less insect prey than wetlands and therefore do not act as similar foraging habitat. Thus, clearcuts may be ecological traps, attracting birds to nest in lower quality habitat. I demonstrated that local-scale habitat associations do not necessarily translate to the landscape-scale. This suggests conservation of wetlands are important for persistence of boreal bird species.
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Copyright © 2018 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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farrell-localscaleassociationofborealbirdswithclearcuts.pdf | 2023-05-05 | Public | Download |