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Holistic Approaches For Invasive Species Management: Exploring Biotic Resistance Of European Green Crab (Carcinus Maenas) Via River Otter (Lontra Canadensis) Diet, Bobbie Buzzell
WWU Graduate School Collection
Establishment of the European green crab (Carcinus maenas) on the west coast United States has led to concerns regarding loss of eelgrass beds and influence on marine communities. To begin examining whether predators can potentially buffer green crab expansion, I studied river otter (Lontra canadensis) diet from scat remains and estimated green crab abundance from removal trapping efforts. River otter scats on the Wa’atch and Tsoo-Yess rivers, Washington, USA, were collected during August-September 2018 and April-September 2019. Hard remains of prey were reported as percent frequency of occurrence, and green crab prey were compared to monthly …