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Effects of Forest Edge and Canopy Cover on the Detection and Nesting Ecology of Marbled Murrelets (in Proc. Conference Biology & Management of Species and Habitats at Risk) Manley, I.A.
1999
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Abstract: In order to define the nesting habitat of marbled murrelets, it is important to understand how edges and openings affect their nesting ecology. We investigated the effect of clear-cut edges and canopy openings on the activity, nesting density and reproductive success of marbled murrelets on the Sunshine Coast. Using RIC inventory methods (audio-visual detections), we found higher murrelet detections at forest edges than at paired locations 250 m from edges. However, using tree-climbing search method we found nesting density was two times higher at forest interior sites than at edges. This suggests that audio-visual surveys are biased by increased visibility of birds in open areas. We examined how habitat scale influences selectivity for cover and openings at nest sites. Murrelets selected nest sites on large, mossy branches with high vertical cover. Nest trees were adjacent to significantly larger canopy openings required to access the nest site...
 
Manley, I.A., Blackburn, I.. 1999. Effects of Forest Edge and Canopy Cover on the Detection and Nesting Ecology of Marbled Murrelets (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks. Proceedings - Conference Biology & Management. Vol. 2
 
Topic: Species and Ecosystems at Risk
Keywords: marbled murrelet, nesting, habitat, Sunshine Coast, surveys, cover
ISSN:  Scientific Name: Brachyramphus marmoratus
ISBN:  English Name: Marbled Murrelet
Other Identifier: University College of the Cariboo
 
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