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Functional and numerical responses of shrews to competition vary with mouse density

curation: Carolyn A. Eckrich. Formal analysis: Carolyn A. Eckrich, Merav Ben-David. Funding acquisition: Elizabeth A. Flaherty, Merav Ben-David. Methodology: Elizabeth A. Flaherty. Writing ± original draft ... : Carolyn A. Eckrich. Writing ± review & editing: Elizabeth A. Flaherty, Merav Ben-David. 18 / 21 19 / 21 20 / 21 1. MacArthur R , Levins R. The limiting similarity, convergence, and divergence of

Modeling Behavior by Coastal River Otter (Lontra Canadensis) in Response to Prey Availability in Prince William Sound, Alaska: A Spatially-Explicit Individual-Based Approach

Effects of climate change on animal behavior and cascading ecosystem responses are rarely evaluated. In coastal Alaska, social river otters (Lontra Canadensis), largely males, cooperatively forage on schooling fish and use latrine sites to communicate group associations and dominance. Conversely, solitary otters, mainly females, feed on intertidal-demersal fish and display mutual...

Estimating Leaf Area Index in Southeast Alaska: A Comparison of Two Techniques

The relationship between canopy structure and light transmission to the forest floor is of particular interest for studying the effects of succession, timber harvest, and silviculture prescriptions on understory plants and trees. Indirect measurements of leaf area index (LAI) estimated using gap fraction analysis with linear and hemispheric sensors have been commonly used to...

Assessing the Impotance of Cutthroat Trout to River Otters in Yellowstone Lake

CUTTHROAT TROUT T o RIVER OTTERS IN YELLOWSTONE LAKE MERAV BEN-DAVID DEPARTMENT OF ZOOLOGY AND PHYSIOLOGY UNIVERSITY OF WYOMING + LARAMIE + Recently-introduced exotic stressors, lake trout (Salvelinus

How Many River Otters Inhabit Yellowstone Lake? An Assessment with Fecal and Hair DNA Analyses

Citation - HOW MANY RIVER OTTERS INHABIT YELLOWSTONE LAKE? A N ASSESSMENT WITH FECAL AND HAIR D N A ANALYSES + MERAV BEN-DAVID+ JAMIE R. CRAIT +DEPARTMENT OF ZOOLOGY & PHYSIOLOGY UNIVERSITY OF WYOMING

Sociality in river otters: cooperative foraging or reproductive strategies?

We evaluated factors influencing social organization in coastal river otters (Lontra canadensis) to test two hypotheses: group formation is an antipredation strategy, or, alternatively, group information is related to cooperative foraging. Data on group size, group composition, and sociality were obtained through radiotracking 55 otters in Prince William Sound, Alaska, USA, from...

Kinship and sociality in coastal river otters: are they related?

Previous studies of coastal river otters (Lontra canadensis) in Prince William Sound, Alaska, USA, documented atypical social organization for mammals. Social groups were composed largely of males, but some males remained solitary year-round and most females were asocial. Because, in carnivores, groups are usually composed of highly related individuals but group living also...