Vertebrate of BC Part 2 Flashcards Preview

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Flashcards in Vertebrate of BC Part 2 Deck (484)
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481

deer and songbirds

abundance in areas with deer more than 50yrs had 55-70% lower songbirds, deer overabundance may explain part of current continental-scale decrease in songbird populations

482

Louise Island

kill deer and monitor island, microsatellite marker genetics determine source population, find ~1/generation (2yrs) were migrating (swimming) from source land, eradication would have to be an ongoing event

483

Red squirrel introduction

for helping pick highly prized sitka spruce cones, when no cones left for squirrels they become ooivores and can sniff out the nest

484

avian dispersal of exotic shrubs

fruit, feces, higher palatability = higher dispersal, protection from humans insufficient to prevent exotic species establishment and loss of native biodiversity