Testing Whether Camera Presence Influences Habitat Specific Predation Pressure on Artificial Shorebird Nests in the Arctic
نویسندگان
چکیده
When monitoring the breeding ecology of birds, causes and times nest failure can be difficult to determine. Cameras placed near nests allow for accurate fate, but their presence may increase risk predation by attracting predators, leading biased results. The relative influence cameras on also depend habitat because predator numbers or behaviour change in response availability accessibility nests. We evaluated impact camera rate artificial within mesic tundra habitats used Arctic-breeding shorebirds. deployed 94 nests, half with without, during shorebird-nesting season 2015 East Bay Migratory Bird Sanctuary, Nunavut. Artificial were distributed evenly across sedge meadow supratidal typically nesting Cox proportional hazards model assess differential survival relation presence, type, placement date, all potential interactions. did not experience higher than those without cameras. Predation was related an interaction between type date. Nests meadows later subject a early season. These differences are likely driven foraging Arctic fox (Vulpes lagopus), species that accounted 81% observed events this study. prey primarily Arvicoline goose eggs at site take shorebird opportunistically, perhaps more often when preferred becomes scarcer. This study demonstrates that, site, do risk. Evaluating is critical prior use, as individual areas differ terms behaviour.
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ژورنال
عنوان ژورنال: Arctic
سال: 2021
ISSN: ['0004-0843', '1923-1245']
DOI: https://doi.org/10.14430/arctic72057