Results 41 to 50 of about 1,531 (216)

Feeding and food supply of juvenile fishes in the eastern Bering Sea in 2003-2012

open access: yesИзвестия ТИНРО, 2015
Feeding of fish juveniles in the eastern Bering Sea is investigated for the periods of 2003-2006 considered as relatively «warm» and 2007-2012 considered as relatively «cold». Small- and medium-sized zooplankton was the dominant prey in the 2003-2006, in
Natalia A. Kuznetsova
doaj   +1 more source

On application of Kalman filters in cohort models

open access: yesИзвестия ТИНРО, 2022
On example of walleye pollock at East Kamchatka, one of possible approaches is considered to assess the state of stocks for marine commercial species with usage of the data on age structure in catches.
O. I. Ilin
doaj   +1 more source

Walleye pollock maturity at age.

open access: yes, 2016
Mean proportion mature at age for walleye pollock in the Gulf of Alaska during 2003–2013. Estimates represent the base, unweighted and weighted spatial models. Shaded areas are 95% bootstrap confidence intervals.
Benjamin C. Williams (3219786)   +2 more
core   +1 more source

Map of walleye pollock sampling locations.

open access: yes, 2016
Sample locations of walleye pollock used for maturity assessment over 1983–2013 in Shelikof Strait, Gulf of Alaska.
Benjamin C. Williams (3219786)   +2 more
core   +1 more source

Factors influencing cannibalism and abundance of walleye pollock (Theragra chalcogramma) on the eastern Bering Sea shelf, 1982–20 [PDF]

open access: yes, 2012
Cannibalism is thought to be an inf luential top-down process affecting walleye pollock (Theragra chalcogramma) recruitment in the eastern Bering Sea (EBS).
Boldt, Jennifer L.   +3 more
core   +1 more source

Assessment of stock state for walleye pollock in the Okhotsk Sea in the spring 2013

open access: yesИзвестия ТИНРО, 2014
Results of the trawl and ichthyoplankton surveys conducted in the northern Okhotsk Sea in the spring of 2013 are presented. In comparison with 2012, the abundance of walleye pollock decreased in 1.8 times and its biomass - in 1.4 times.
Evgeny E. Ovsyannikov   +1 more
doaj   +1 more source

Causal Models as a Scientific Framework for Next‐Generation Ecosystem and Climate‐Linked Stock Assessments

open access: yesFish and Fisheries, Volume 27, Issue 4, Page 942-959, July 2026.
ABSTRACT Rapid changes in marine ecosystems highlight the need to account for time‐varying productivity in stock assessments used to support fisheries management. Common approaches incorporate annual variation or regressing processes such as recruitment, natural mortality, or growth on environmental variables.
J. Champagnat   +6 more
wiley   +1 more source

Walleye pollock weight at age.

open access: yes, 2016
Female walleye pollock weight at age for ages 1–10 from fishery-independent samples in Shelikof Strait, Gulf of Alaska. Solid lines are generalized additive model estimates; shaded areas are 95% confidence intervals.
Benjamin C. Williams (3219786)   +2 more
core   +1 more source

LONG-TERM AVERAGE BIOMASS AND DOMINANT FISH SPECIES IN THE BOTTOM BIOTOPES OF THE OKHOTSK SEA. PART 2. COMPOSITION AND QUANTITATIVE RATIO OF SPECIES AT THE CONTINENTAL SLOPE IN DIFFERENT AREAS OF THE SEA

open access: yesИзвестия ТИНРО, 2018
Demersal fish biomass is quantitatively evaluated in the bottom biotopes at the depths to 2000 m at the continental slope of the Okhotsk Sea on the data of 2,545 trawl catches obtained in 1977–2010.
V. P. Shuntov, O. S. Temnykh
doaj   +1 more source

A Framework to Investigate the Effects of Observation Error on Neural Network Predictions of Fish Age

open access: yesFish and Fisheries, Volume 27, Issue 4, Page 974-986, July 2026.
ABSTRACT Technological innovations for predicting fish age represent a paradigm shift from conventional age estimation methods used in fisheries science. Recently developed secondary methods rely on models trained on conventional age estimates, derived from subjective interpretation of growth patterns and a biological property of the fish to predict ...
Derek W. Chamberlin   +11 more
wiley   +1 more source

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