A5023316915- Marine and fisheries research
- Arctic and Antarctic ice dynamics
- Marine animal studies overview
- Fish Ecology and Management Studies
- Ocean Acidification Effects and Responses
- Ichthyology and Marine Biology
- Oceanographic and Atmospheric Processes
- Marine Bivalve and Aquaculture Studies
- Marine and coastal ecosystems
- Coral and Marine Ecosystems Studies
- Cephalopods and Marine Biology
- Atmospheric and Environmental Gas Dynamics
- Indigenous Studies and Ecology
- Marine and coastal plant biology
- Avian ecology and behavior
- Methane Hydrates and Related Phenomena
- Identification and Quantification in Food
- Arctic and Russian Policy Studies
- Fish Biology and Ecology Studies
- Marine Biology and Ecology Research
- Geological Studies and Exploration
- Real-Time Systems Scheduling
- Property Rights and Legal Doctrine
- Food Industry and Aquatic Biology
- Cryospheric studies and observations
National Oceanic and Atmospheric Administration
2011-2023
NOAA National Marine Fisheries Service
2008-2023
NOAA National Marine Fisheries Service Alaska Fisheries Science Center
2011-2023
Arizona State University
2012
NOAA National Marine Fisheries Service Southwest Fisheries Science Center
2006
Bartlett Regional Hospital
2006
University of Alaska Fairbanks
2006
New York State College of Veterinary Medicine
1982
Cornell University
1982
a l p O r Y e ( 2 0 7 -2 9) relationships among the Bering, Chukchi, and Beaufort Seas in Time of Climate Change Black-legged Kittiwakes flying over sea ice arctic region Spitsbergen/Svalbard.
Abstract Small-scale fisheries play a critical role in food security and contribute to nearly half of reported global fish catches. However, the status most small-scale stocks is still poor. In data-limited situations, length-based methods have been widely applied estimate reference points understand stock status. This study three different assessment (length-based indicators—LBI, spawning potential ratio—LBSPR, Bayesian biomass approach—LBB) predict sustainability Azores. Overall, showed...
Trait-based climate vulnerability assessments based on expert evaluation have emerged as a rapid tool to assess biological when detailed correlative or mechanistic studies are not feasible. typically view combination of sensitivity and exposure change. However, in some locations, substantial amount information may exist system productivity environmental conditions (both current projected), with potential disparities the available for data-rich data-poor stocks. Incorporating this level poses...
Satellite‐linked radio telemetry was used to study the geographic movements and vertical movement behaviour of Pacific sleeper shark Somniosus pacificus . The fish were tagged near Steller sea lion Eumetopias jubatus rookeries in Gulf Alaska during periods when lions pups most vulnerable predation; first enter water (July August) are weaned (April May). Final locations recovered from sharks (76%) within 100 km release locations, 16% 100–250 8% 250–500 km. striking behavioural feature their...
Abstract Interactions between marine mammals and fisheries include competition for prey (catch), mammal entanglement in fishing gear, catch removal off gear (depredation). We estimated the magnitude of sperm whale depredation on a major North Pacific longline fishery (sablefish) using data collected during annual surveys. Sperm occurs while is off‐bottom retrieval. whales were observed 16% survey sampling days, mostly (95% sightings) over continental slope. Sightings most common central...
Resource managers in the United States and worldwide are tasked with identifying mitigating trade-offs between human activities deep sea (e.g., fishing, energy development, mining) their impacts on habitat-forming invertebrates, including deep-sea corals sponges (DSCS). Related management decisions require information about where DSCS occur what densities. Species distribution modeling (SDM) provides a cost-effective means of potential habitat over large areas to inform these data...
Development of competent diving ability is critical to obtaining nutritional independence in marine mammals such as Steller sea lions (SSLs), Eumetopias jubatus (Schreber, 1776). We studied performance pup (75) and juvenile (36) SSLs using satellite data recorders. In general, dives by were brief shallow. Overall, 82.3% <2 min long 86.9% <10 m deep. Long (>5 min) deep (>100 m) constituted only 2.49% 0.77%, respectively, total dives. used linear mixed-effects models investigate...
The availability of seasonally abundant energy-rich prey can be a significant factor for the survival and reproductive success predator populations. Large numbers Steller sea lions (Eumetopias jubatus) were attracted to prespawning aggregation eulachon (Thaleichthys pacificus) in Berners Bay southeast Alaska during AprilMay 2002 2003. Sea lion abundance increased as gathered Bay, peaked peaked, decreased moved up-river. As at Benjamin Island, haulout located 22 km away. provided an...
Abstract Aim We used a novel approach to infer foraging areas of central‐place forager, the Steller sea lion ( Eumetopias jubatus ), by assessing changes in temporal and spatial distribution patterns lions at terrestrial sites. Specifically, our objectives were (1) classify seasonal (2) determine what extent is explained concentrations prey. Location Southeast Alaska, USA. Methods all age classes counted monthly (2001–04) aerial surveys 28 Hierarchical cluster analysis principal components...
Pacific sleeper sharks Somniosus pacificus were captured near Steller sea lion Eumetopias jubatus rookeries during the period when pups are most vulnerable to shark predation (first water entrance and weaning). Analysis of stomach contents revealed that teleosts dominant prey in August cephalopods May ( n = 198). Marine mammals found 15% stomachs regardless season, but no tissues detected. Molecular genetic analysis identified grey whale Eschrichtius robustus harbour seal Phoca vitulina...
The Bering Sea is one of the most productive marine ecosystems in world, sustaining nearly half U.S. annual commercial fish catches and providing food cultural value to thousands coastal island residents. Fish crab are abundant Sea; whales, seals, seabirds migrate there every year. In winter, topography, latitude, atmosphere, ocean circulation combine produce a sea ice advance unmatched elsewhere Northern Hemisphere, spring retreating ice; longer daylight hours; nutrient‐rich, deep‐ocean...
† OA here refers to a second carbon parameter (i.e.pH, DIC, or TA) that will make the sensor package capable of reflecting ocean acidification conditions.‡ This observational system be part cabled observatory node.§ station is an