Results 71 to 80 of about 1,729,228 (188)
ABSTRACT Quantifying broad‐scale population trends and distribution change is critical for effective management and conservation of marine species, particularly under climate change. However, fragmented regional survey data often hinder such efforts for transboundary populations. A prime example is Pacific Spiny Dogfish (Squalus suckleyi, Squalidae), a
Lindsay N. K. Davidson +8 more
wiley +1 more source
Exploring Marine Mammal Cognition as a Conservation Tool
ABSTRACT Cognition is an animal's real‐time adaptation system for responding to change. Rapid environmental change, often anthropogenic, is expanding the range and severity of challenges confronting wild animals. Effective conservation requires a multifaceted approach that includes animals' capacities.
Gordon B. Bauer +21 more
wiley +1 more source
Gray Whale Energy Requirements
ABSTRACT Eastern North Pacific gray whales (Eschrichtius robustus) rely on energy obtained from Arctic feeding grounds to complete their 15,000–20,000 km annual round‐trip migration between feeding and breeding areas. However, quantitative estimates of their food requirements remain scarce. Using an age‐structured bioenergetics model incorporating life
Selina Agbayani +2 more
wiley +1 more source
ABSTRACT Rationale The Japanese sea lion (Zalophus japonicus), once abundant in Japan, Korea, and Russia, went extinct by the mid‐20th century due to hunting and environmental change. This study examines the diet and ecological role of Korean Z. japonicus using stable carbon and nitrogen isotope analysis of bone collagen from archaeological and ...
Yoon Ji Lee +4 more
wiley +1 more source
Steller sea lions and fisheries : competition at sea?
A leading hypothesis to explain the decline of Steller sea lions (Eumetopias jubatus) in western Alaska is the reduction of prey abundance or change in prey distributions caused by commercial fisheries. We sought to improve on past studies that attempted to assess competition between sea lions and fisheries by estimating the local amounts of prey ...
openaire +1 more source
Abstract Top predators influence ecological communities in part through the prey they consume. Prey preferences often shift throughout the year, reflecting both seasonal and geographic patterns of habitat use and the relative abundance of preferred prey species.
Hannah J. Myers +5 more
wiley +1 more source
Comparing the nutritional quality of Steller sea lion (Eumetopias jubatus) diets [PDF]
Thesis (M.S.) University of Alaska Fairbanks, 2002Though the primary cause(s) of the Steller sea lion decline remains unknown, one hypothesis is nutritional stress, possibly the result of climatic regime shifts reducing prey availability and/or quality ...
Bando, Monica Kaho Herkules
core
Cooperative foraging by Steller Sea Lions, Eumetopias jubatus
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Gende, Scott M. +3 more
openaire +2 more sources

