Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea
We examined the effects of environmental factors (water temperature, the North Atlantic Oscillation winter index – NAOw, and cod biomass) on the abundance (population number), biomass and mean individual weight of juvenile red king crab (Paralithodes camtschaticus) at a typical coastal site of the B...
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Online Access: | https://doi.org/10.3389/fmars.2020.00726 https://doaj.org/article/2beb748576f24361b2dc952e5d3e64b9 |
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ftdoajarticles:oai:doaj.org/article:2beb748576f24361b2dc952e5d3e64b9 2023-05-15T15:38:28+02:00 Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea Alexander G. Dvoretsky Vladimir G. Dvoretsky 2020-09-01T00:00:00Z https://doi.org/10.3389/fmars.2020.00726 https://doaj.org/article/2beb748576f24361b2dc952e5d3e64b9 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2020.00726/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.00726 https://doaj.org/article/2beb748576f24361b2dc952e5d3e64b9 Frontiers in Marine Science, Vol 7 (2020) Paralithodes camtschaticus juveniles Barents Sea stock dynamics climatic indices Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2020 ftdoajarticles https://doi.org/10.3389/fmars.2020.00726 2022-12-31T03:57:35Z We examined the effects of environmental factors (water temperature, the North Atlantic Oscillation winter index – NAOw, and cod biomass) on the abundance (population number), biomass and mean individual weight of juvenile red king crab (Paralithodes camtschaticus) at a typical coastal site of the Barents Sea, Dalnezelenetskaya Bay, a place of red king crab introduction. Current-year abundance and stock data for 3–5-year-old crabs were positively related to water temperature in September and October. The biomass of crabs at age 0–2 year was positively correlated with lag 1 water temperature in August, while the abundance of age 0–5 year was positively correlated to the NAOw indicating more favorable habitat conditions in warmer periods. The abundance of crabs at age 3–5 year was negatively correlated to December temperature and mean water temperature and temperature anomaly with a 1-year lag. These temperature relationships, together with negative correlations between stock indices of crabs and cod (Gadus morhua) and positive relationships between mean crab weight and cod biomass, suggests that the fish predation, which is higher in warmer years, has a more important role in mortality of 3–5 year crabs than 0–2 year crabs. Our findings may be useful for modeling recruitment processes and management of red king crab in the Barents Sea. Article in Journal/Newspaper Barents Sea Gadus morhua North Atlantic North Atlantic oscillation Paralithodes camtschaticus Red king crab Directory of Open Access Journals: DOAJ Articles Barents Sea Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Paralithodes camtschaticus juveniles Barents Sea stock dynamics climatic indices Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Paralithodes camtschaticus juveniles Barents Sea stock dynamics climatic indices Science Q General. Including nature conservation geographical distribution QH1-199.5 Alexander G. Dvoretsky Vladimir G. Dvoretsky Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea |
topic_facet |
Paralithodes camtschaticus juveniles Barents Sea stock dynamics climatic indices Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
We examined the effects of environmental factors (water temperature, the North Atlantic Oscillation winter index – NAOw, and cod biomass) on the abundance (population number), biomass and mean individual weight of juvenile red king crab (Paralithodes camtschaticus) at a typical coastal site of the Barents Sea, Dalnezelenetskaya Bay, a place of red king crab introduction. Current-year abundance and stock data for 3–5-year-old crabs were positively related to water temperature in September and October. The biomass of crabs at age 0–2 year was positively correlated with lag 1 water temperature in August, while the abundance of age 0–5 year was positively correlated to the NAOw indicating more favorable habitat conditions in warmer periods. The abundance of crabs at age 3–5 year was negatively correlated to December temperature and mean water temperature and temperature anomaly with a 1-year lag. These temperature relationships, together with negative correlations between stock indices of crabs and cod (Gadus morhua) and positive relationships between mean crab weight and cod biomass, suggests that the fish predation, which is higher in warmer years, has a more important role in mortality of 3–5 year crabs than 0–2 year crabs. Our findings may be useful for modeling recruitment processes and management of red king crab in the Barents Sea. |
format |
Article in Journal/Newspaper |
author |
Alexander G. Dvoretsky Vladimir G. Dvoretsky |
author_facet |
Alexander G. Dvoretsky Vladimir G. Dvoretsky |
author_sort |
Alexander G. Dvoretsky |
title |
Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea |
title_short |
Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea |
title_full |
Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea |
title_fullStr |
Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea |
title_full_unstemmed |
Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea |
title_sort |
effects of environmental factors on the abundance, biomass, and individual weight of juvenile red king crabs in the barents sea |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.00726 https://doaj.org/article/2beb748576f24361b2dc952e5d3e64b9 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Gadus morhua North Atlantic North Atlantic oscillation Paralithodes camtschaticus Red king crab |
genre_facet |
Barents Sea Gadus morhua North Atlantic North Atlantic oscillation Paralithodes camtschaticus Red king crab |
op_source |
Frontiers in Marine Science, Vol 7 (2020) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2020.00726/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.00726 https://doaj.org/article/2beb748576f24361b2dc952e5d3e64b9 |
op_doi |
https://doi.org/10.3389/fmars.2020.00726 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
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1766369397464629248 |