scholarly journals Abundance and distribution of toxic Alexandrium tamarense resting cysts in the sediments of the Chukchi Sea and the eastern Bering Sea

Harmful Algae ◽  
2013 ◽  
Vol 27 ◽  
pp. 52-59 ◽  
Author(s):  
Masafumi Natsuike ◽  
Satoshi Nagai ◽  
Kohei Matsuno ◽  
Rui Saito ◽  
Chiko Tsukazaki ◽  
...  
Keyword(s):  
Bering Sea ◽  
Chukchi Sea ◽  
Alexandrium Tamarense ◽  
Eastern Bering Sea ◽  
Resting Cysts ◽  
Abundance And Distribution

The physiological adaptations and toxin profiles of the toxic Alexandrium fundyense on the eastern Bering Sea and Chukchi Sea shelves

Harmful Algae ◽  
2017 ◽  
Vol 63 ◽  
pp. 13-22 ◽  
Author(s):  
Masafumi Natsuike ◽  
Hiroshi Oikawa ◽  
Kohei Matsuno ◽  
Atsushi Yamaguchi ◽  
Ichiro Imai
Keyword(s):  
Bering Sea ◽  
Chukchi Sea ◽  
Alexandrium Fundyense ◽  
Eastern Bering Sea ◽  
Physiological Adaptations

scholarly journals Baleen whale abundance and distribution in relation to environmental variables and prey density in the Eastern Bering Sea

2016 ◽  
Vol 134 ◽  
pp. 312-330 ◽  
Author(s):  
Alexandre N. Zerbini ◽  
Nancy A. Friday ◽  
Daniel M. Palacios ◽  
Janice M. Waite ◽  
Patrick H. Ressler ◽  
...  
Keyword(s):  
Bering Sea ◽  
Environmental Variables ◽  
Prey Density ◽  
Baleen Whale ◽  
Eastern Bering Sea ◽  
Abundance And Distribution

scholarly journals Spatio-temporal distribution of euphausiids: an important component to understanding ecosystem processes in the Gulf of Alaska and eastern Bering Sea

2016 ◽  
Vol 73 (8) ◽  
pp. 2020-2036 ◽  
Author(s):  
Kirsten A. Simonsen ◽  
Patrick H. Ressler ◽  
Christopher N. Rooper ◽  
Stephani G. Zador
Keyword(s):  
Primary Production ◽  
Bering Sea ◽  
Gulf Of Alaska ◽  
Additive Models ◽  
Trophic Levels ◽  
Production Model ◽  
Trawl Survey ◽  
Large Spatial Scale ◽  
Eastern Bering Sea ◽  
Abundance And Distribution

Abstract Euphausiids (principally Thysanoessa spp.) are found in high abundance in both the eastern Bering Sea (EBS) and the Gulf of Alaska (GOA). They are an important part of these cold-water coastal and pelagic ecosystems as a key prey item for many species, including marine mammals, seabirds, and fish, forming an ecological link between primary production and higher trophic levels. Acoustic-trawl (AT) survey methods provide a means of monitoring euphausiid abundance and distribution over a large spatial scale. Four years of AT and bottom-trawl survey data (2003, 2005, 2011, and 2013) were available from consistently sampled areas around Kodiak Island, including Shelikof Strait, Barnabas Trough, and Chiniak Trough. We identified euphausiid backscatter using relative frequency response and targeted trawling, and created an annual index of abundance for euphausiids. This index has broad application, including use in the stock assessments for GOA walleye pollock (Gadus chalcogrammus) and other species, as an ecosystem indicator, and to inform ecological research. We then used generalized additive models (GAMs) to examine the relationship between relative euphausiid abundance and potential predictors, including pollock abundance, temperature, bottom depth, and primary production. Model results were compared with an updated GAM of euphausiid abundance from the EBS to determine if the factors driving abundance and distribution were consistent between both systems. Temperature was not a strong predictor of euphausiid abundance in the GOA as in the EBS; warmer temperatures and lack of seasonal ice cover in the GOA may be a key difference between these ecosystems. Pollock abundance was significant in both the GOA and the EBS models, but was not a strongly negative predictor of euphausiid abundance in either system, a result not consistent with top-down control of euphausiid abundance.

scholarly journals Evidence of increased toxic Alexandrium tamarense dinoflagellate blooms in the eastern Bering Sea in the summers of 2004 and 2005

PLoS ONE ◽  
2017 ◽  
Vol 12 (11) ◽  
pp. e0188565 ◽  
Author(s):  
Masafumi Natsuike ◽  
Rui Saito ◽  
Amane Fujiwara ◽  
Kohei Matsuno ◽  
Atsushi Yamaguchi ◽  
...  
Keyword(s):  
Bering Sea ◽  
Alexandrium Tamarense ◽  
Eastern Bering Sea

Relationship of age-0 pollock abundance and distribution around the Pribilof Islands, to other shelf regions of the eastern Bering Sea

2005 ◽  
Vol 74 (1-3) ◽  
pp. 273-287 ◽  
Author(s):  
Gordon Swartzman ◽  
Andreas Winter ◽  
Kenneth Coyle ◽  
Richard Brodeur ◽  
Troy Buckley ◽  
...  
Keyword(s):  
Bering Sea ◽  
Eastern Bering Sea ◽  
Pribilof Islands ◽  
Abundance And Distribution ◽  
Relationship Of

scholarly journals Predicted shifts of groundfish distribution in the Eastern Bering Sea under climate change, with implications for fish populations and fisheries management

2020 ◽  
Author(s):  
Christopher N Rooper ◽  
Ivonne Ortiz ◽  
Albert J Hermann ◽  
Ned Laman ◽  
Wei Cheng ◽  
...  
Keyword(s):  
Bering Sea ◽  
Marine Species ◽  
Species Distribution Modelling ◽  
Fish Populations ◽  
Trawl Survey ◽  
Climate Scenarios ◽  
Important Species ◽  
Eastern Bering Sea ◽  
Northern Latitudes ◽  
Distribution Shifts

Abstract Climate-related distribution shifts for marine species are, in general, amplified in northern latitudes. The objective of this study was to predict future distributions of commercially important species in the eastern Bering Sea under six climate scenarios, by incorporating predictions of future oceanographic conditions. We used species distribution modelling to determine potential distribution changes in four time periods (2013–2017, 2030–2039, 2060–2069, and 2090-2099) relative to 1982–2012 for 16 marine fish and invertebrates. Most species were predicted to have significant shifts in the centre of gravity of the predicted abundance, the area occupied, and the proportion of the predicted abundance found in the standard bottom trawl survey area. On average the shifts were modest, averaging 35.2 km (ranging from 1 to 202 km). There were significant differences in the predicted trend for distribution metrics among climate scenarios, with the most extensive changes in distribution resulting from Representative Concentration Pathway 8.5 climate scenarios. The variability in distributional shifts among years and climate scenarios was high, although the magnitudes were low. This study provides a basis for understanding where fish populations might expand or contract in future years. This will provide managers’ information that can help guide appropriate actions under warming conditions.

The Food of Fur Seals in the Eastern Bering Sea

1957 ◽  
Vol 21 (2) ◽  
pp. 237 ◽  
Author(s):  
Ford Wilke ◽  
Karl W. Kenyon
Keyword(s):  
Bering Sea ◽  
Eastern Bering Sea ◽  
Fur Seals
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