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75 resources match your filter criteria.

2021 Results Of Steller Sea Lion Surveys In Alaska

The Marine Mammal Laboratory (MML) conducted aerial surveys to photograph and count Steller sea lion (Eumetopias jubatus) pups (~1 month old) and non-pups (adults and juveniles ≥ 1 year old)... (AFSC/MML/AEP 2016) in Alaska in June-July 2021.
February 03, 2022 - Survey ,

2019 Aerial Surveys Of Arctic Marine Mammals

Distribution and Relative Abundance of Marine Mammals in the Eastern Chukchi Sea, Eastern and Western Beaufort Sea, and Amundsen Gulf, 2019 Annual Report
October 28, 2020 - Survey ,

2019 Results of Steller Sea Lion Surveys in Alaska

The Marine Mammal Laboratory (MML) conducted aerial surveys to photograph and count Steller sea lion pups (~1 month old) and non-pups (adults and juveniles ≥ 1 year old) on known terrestrial rookery and haulout sites in Alaska in June-July 2019.
December 06, 2019 - Survey ,

Cruise Reports - Ecosystems Surveys Branch - Northeast

The purpose of cruise results is to describe the purpose, methods used, personnel who participated, and a summary of the total number of samples collected for various government and university investigators during the Ecosystem Surveys Branch's seasonal bottom trawl, shrimp, surf clam and scallop resource cruises.
September 26, 2019 - Survey ,

2018 Aerial Surveys of Arctic Marine Mammals

This report describes field activities of the Aerial Surveys of Arctic Marine Mammals (ASAMM) project conducted during summer and fall (1 July–29 October) 2018, and data and analyses used to summarize field activities. Surveys were based in Utqiaġvik (formerly Barrow), Alaska, and Deadhorse, Alaska, and targeted the northeastern and southcentral Chukchi and western Beaufort seas, between 67°N and 73°N latitude, 140°W and 169°W longitude.
April 24, 2019 - Survey ,

Long-Term Changes in Length at Maturity of Pacific Salmon in Auke Creek Alaska

Although decreasing length at maturity has been observed in some Alaska salmon populations, the generality of this trend is poorly understood. This study was undertaken to determine whether this pattern holds for multiple species of salmon from a small watershed in Southeast Alaska (Auke Creek), and if so, what abiotic and biotic factors are contributing to this phenomenon.
December 11, 2018 - Survey ,

2018 Results of Steller Sea Lion Surveys in Alaska

The Marine Mammal Laboratory (MML) conducted aerial- and ship-based surveys to count Steller sea lion pups and non-pups in Summer 2018.
December 04, 2018 - Survey ,

Forecast Fish and Marine Mammal Population Responses to Ocean Acidification in the North Pacific Ocean and Bering Sea

Approximately 30-50% of global anthropogenic CO2 emissions are absorbed by the world’s oceans (Feely et al. 2004, Sabine et al. 2004). Increased CO2 uptake by the oceans is expected to reduce surface ocean pH by 0.3 – 0.5 units over the next century, which would be the largest change in pH to occur in the last 20-200 million years (Feely et al. 2004). Ocean acidification reduces the calcium carbonate (CaCO3) saturation point. Dramatic reductions in calcium carbonate saturation have been observed in the North Pacific since the industrial revolution (Feely et al. 2004).
September 19, 2018 - Survey ,

Forecast Fish, Shellfish, and Coral Population Responses to Ocean Acidification in the North Pacific Ocean and Bering Sea

The North Pacific Ocean is a sentinel region for signs of ocean acidification. Approximately 30-50% of global anthropogenic carbon dioxide (CO2) emissions are absorbed by the world’s oceans. Dissolving CO2 increases the hydrogen ion (H+) concentration in the ocean, and thus reduces ocean pH. Corrosive waters reach shallower depths more so there than in other ocean basins, especially in Alaska, and so biological impacts will likely occur earlier than in many other places. Ocean acidification reduces the calcium carbonate (CaCO3) saturation point, which stresses calcifying organisms by making calcification more difficult. The Alaska Fisheries Science Center research plan will focus on commercially important fish and shellfish species, their prey (calcareous plankton) and shelter (corals). Ocean acidification will likely impact the ability of marine calcifiers, such as corals and shellfish, to make shells and skeletons from CaCO3. Ocean acidification may also affect fish, marine mammal and seabird species through reduced abundance of calcareous plankton at the base of the food web. Species-specific studies of shellfish, calcareous plankton, corals and fish will be conducted to understand physiological effects (growth and survival). The CaCO3 content of calcareous organisms is not well known and a survey of shellfish, calcareous plankton and corals will be conducted to assess species vulnerabilities to ocean acidification. The results of the species-specific studies will be incorporated into population and ecosystem models to forecast population and ecosystem impacts. Bioeconomic models of Alaskan crab fisheries will be used to forecast fishery performance for a range of climate and ocean acidification scenarios.
September 19, 2018 - Survey ,

Center for Independent Experts Summary Report for the 2006 Alaska Rockfish Review

This report presents the summary views of Drs. Patrick Cordue, Cynthia Jones, and Robert Mohn on each of three terms of reference, as the reviewers were required to generate under the review statement of work. As such, the report only collates the summary views to generate a concise set of summaries, and it does not otherwise alter the reviewers’ text. For a more detailed discussion on each term, the reader should refer to the reviewers’ full reports.
September 19, 2018 - Survey ,