Population consequences of endangered species interacting as predators and prey have been considered theoretically and legally, but rarely investigated in the field. We examined relationships between spatially variable populations of a predator, the California sea otter, Enhydra lutris nereis, and a prey species, the black abalone, Haliotis cracherodii. Both species are federally listed under t...

Volunteer monitoring can support conservation of imperiled wildlife, by providing higher resolution data in space and time than those available from professional scientists. However, concerns have been raised that collected amateurs are inaccurate or inconsistent thus do not allow for robust detection spatial temporal trends. We evaluated the rigor value volunteer one iconic wildlife species, s...

Photo 1. Alexander Archipelago wolf (Canis lupus ligoni), Southeast Alaska, USA. This subspecies of inhabits a vast island archipelago that is naturally fragmented by steep terrain and expanses ocean. These elements contribute to variation in species distribution assemblages between mainland areas this region. credit: Bjorn Dihle. 2. An foraging the intertidal zone, Pleasant Island, Despite nea...

Abstract Background Reintroducing predators is a promising conservation tool to help remedy human-caused ecosystem changes. However, the growth and spread of reintroduced population spatiotemporal process that driven by suite factors, such as habitat change, human activity, prey availability. Sea otters ( Enhydra lutris ) are apex nearshore marine ecosystems had declined nearly extinction acros...

Perfluorinated chemicals (PFCs) have been detected in abiotic and biotic matrices worldwide, including the Arctic Ocean. Considering these chemicals' persistent and bioaccumulative potentials, it was expected that levels of PFCs, like those of many legacy organic pollutants, would respond slowly to the restrictions in production and usage. Temporal trend studies in remote areas, such as the Arc...