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Publications

Below is a list of WERC's peer-reviewed publications. If you are searching for a specific publication and cannot find it in this list, please contact werc_web@usgs.gov

Filter Total Items: 3776

Comparative demography of sea otter populations Comparative demography of sea otter populations

Population trends are poorly documented and demographic information is typically lacking for many carnivorous mammals. The sea otter (Enhydru lutris) has a well known history of decline and recovery, and while many other species have declined as precipitously, few have recovered so spectacularly. Generally speaking, northern populations (remnants within the range of E. l. lutris and E. l...
Authors
James A. Estes, Daniel F. Doak, James L. Bodkin, Ronald J. Jameson, Daniel H. Monson, Jon Watt, M. Tim Tinker

Effects of soil moisture and temperature on overwintering survival of Curculio larvae (Coleoptera : Curculionidae) Effects of soil moisture and temperature on overwintering survival of Curculio larvae (Coleoptera : Curculionidae)

Few studies to date have investigated factors, other than mast crop size, that influence the dynamics of Curculio populations.W e examined the effects of varying levels of soil moisture (0.35, 0.4 and 0.5 g water/g soil) and temperature (8, 14 and 20 C) on over wintering survival of Curculio larvae collected from Quercus michauxii acorns. Survival of larvae, analyzed using log-linear...
Authors
Mark A. Ricca, Floyd W. Weckerly, Raymond D. Semlitsch

Infestation of an introduced host, the European green crab, Carcinus maenas by a native symbiotic nemertean egg predator, Carcinonemertes epialti Infestation of an introduced host, the European green crab, Carcinus maenas by a native symbiotic nemertean egg predator, Carcinonemertes epialti

The recent introduction of the European green crab, Carcinus maenas, to the west coast of the U.S. has provided an opportunity for host transfer of the symbiotic nemertean egg predator, Carcinonemertes epialti, from its native shore crab host, Hemigrapsus oregonensis to the exotic C. maenas. Two surveys of C. maenas in Bodega Harbor, California, revealed that, in March 1995 prevalence of...
Authors
M.E. Torchin, K. D. Lafferty, A. M. Kuris
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