Evaluating anthropogenic threats to endangered killer whales to inform effective recovery plans.

ABSTRACT: Understanding cumulative effects of multiple threats is key to guiding effective management to conserve endangered species. The critically endangered, Southern Resident killer whale population of the northeastern Pacific Ocean provides a data-rich case to explore anthropogenic threats on population viability. Primary threats include: limitation of preferred prey, Chinook salmon; anthropogenic noise and disturbance, which reduce foraging efficiency; and high levels of stored contaminants, including PCBs. We constructed a population viability analysis to explore possible demographic trajectories and the relative importance of anthropogenic stressors. The population is fragile, with no growth projected under current conditions, and decline expected if new or increased threats are imposed. Imp

SUBMITTER: Lacy RC 

PROVIDER: S-EPMC5658391 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature