DENSITY DEPENDENCE AND DENSITY INDEPENDENCE DURING THE EARLY LIFE STAGES OF FOUR MARINE FISH STOCKS
Recruitment variability caused by density-dependent and density-independent processes is an important area within the study of fish dynamics. These processes can exhibit nonlinearities and nonadditive properties that may have profound dynamic effects. We investigate the importance of population dens...
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ftdatacite:10.6084/m9.figshare.c.3299636.v1 2023-05-15T14:30:31+02:00 DENSITY DEPENDENCE AND DENSITY INDEPENDENCE DURING THE EARLY LIFE STAGES OF FOUR MARINE FISH STOCKS Gjert E. DingsØr Ciannelli, Lorenzo Kung-Sik Chan Ottersen, Geir Stenseth, Nils Chr. 2016 https://dx.doi.org/10.6084/m9.figshare.c.3299636.v1 https://figshare.com/collections/DENSITY_DEPENDENCE_AND_DENSITY_INDEPENDENCE_DURING_THE_EARLY_LIFE_STAGES_OF_FOUR_MARINE_FISH_STOCKS/3299636/1 unknown Figshare https://dx.doi.org/10.1890/05-1782 https://dx.doi.org/10.6084/m9.figshare.c.3299636 CC-BY http://creativecommons.org/licenses/by/3.0/us CC-BY Environmental Science Ecology FOS Biological sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3299636.v1 https://doi.org/10.1890/05-1782 https://doi.org/10.6084/m9.figshare.c.3299636 2021-11-05T12:55:41Z Recruitment variability caused by density-dependent and density-independent processes is an important area within the study of fish dynamics. These processes can exhibit nonlinearities and nonadditive properties that may have profound dynamic effects. We investigate the importance of population density (i.e., density dependence) and environmental forcing (i.e., density independence) on the age-0 and age-1 abundance of capelin (Mallotus villosus), northeast Arctic cod (Gadus morhua), northeast Arctic haddock (Melanogrammus aeglefinus), and Norwegian spring spawning herring (Clupea harengus) in the Barents Sea. We use statistical methods that explicitly account for nonlinearities and nonadditive interactions between internal and external variables in the abundance of these two pre-recruitment stages. Our results indicate that, during their first five months of life, cod, haddock, and herring experience higher density-dependent survival than capelin. The abundance of age-0 cod depends on the mean age and biomass of the spawning stock, a result which has implications for the management of the entire cod stock. Temperature is another important factor influencing the abundance at age-0 and age-1 of all four species, except herring at age-1. Between age-0 and age-1, there is an attenuation of density-dependent survival for cod and herring, while haddock and capelin experience density dependence at high and low temperatures, respectively. Predation by subadult cod is important for both capelin and cod at age-1. We found strong indications for interactions among the studied species, pointing to the importance of viewing the problem of species recruitment variability as a community, rather than as a population phenomenon. Article in Journal/Newspaper Arctic cod Arctic Barents Sea Gadus morhua Northeast Arctic cod DataCite Metadata Store (German National Library of Science and Technology) Arctic Barents Sea |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Environmental Science Ecology FOS Biological sciences Gjert E. DingsØr Ciannelli, Lorenzo Kung-Sik Chan Ottersen, Geir Stenseth, Nils Chr. DENSITY DEPENDENCE AND DENSITY INDEPENDENCE DURING THE EARLY LIFE STAGES OF FOUR MARINE FISH STOCKS |
topic_facet |
Environmental Science Ecology FOS Biological sciences |
description |
Recruitment variability caused by density-dependent and density-independent processes is an important area within the study of fish dynamics. These processes can exhibit nonlinearities and nonadditive properties that may have profound dynamic effects. We investigate the importance of population density (i.e., density dependence) and environmental forcing (i.e., density independence) on the age-0 and age-1 abundance of capelin (Mallotus villosus), northeast Arctic cod (Gadus morhua), northeast Arctic haddock (Melanogrammus aeglefinus), and Norwegian spring spawning herring (Clupea harengus) in the Barents Sea. We use statistical methods that explicitly account for nonlinearities and nonadditive interactions between internal and external variables in the abundance of these two pre-recruitment stages. Our results indicate that, during their first five months of life, cod, haddock, and herring experience higher density-dependent survival than capelin. The abundance of age-0 cod depends on the mean age and biomass of the spawning stock, a result which has implications for the management of the entire cod stock. Temperature is another important factor influencing the abundance at age-0 and age-1 of all four species, except herring at age-1. Between age-0 and age-1, there is an attenuation of density-dependent survival for cod and herring, while haddock and capelin experience density dependence at high and low temperatures, respectively. Predation by subadult cod is important for both capelin and cod at age-1. We found strong indications for interactions among the studied species, pointing to the importance of viewing the problem of species recruitment variability as a community, rather than as a population phenomenon. |
format |
Article in Journal/Newspaper |
author |
Gjert E. DingsØr Ciannelli, Lorenzo Kung-Sik Chan Ottersen, Geir Stenseth, Nils Chr. |
author_facet |
Gjert E. DingsØr Ciannelli, Lorenzo Kung-Sik Chan Ottersen, Geir Stenseth, Nils Chr. |
author_sort |
Gjert E. DingsØr |
title |
DENSITY DEPENDENCE AND DENSITY INDEPENDENCE DURING THE EARLY LIFE STAGES OF FOUR MARINE FISH STOCKS |
title_short |
DENSITY DEPENDENCE AND DENSITY INDEPENDENCE DURING THE EARLY LIFE STAGES OF FOUR MARINE FISH STOCKS |
title_full |
DENSITY DEPENDENCE AND DENSITY INDEPENDENCE DURING THE EARLY LIFE STAGES OF FOUR MARINE FISH STOCKS |
title_fullStr |
DENSITY DEPENDENCE AND DENSITY INDEPENDENCE DURING THE EARLY LIFE STAGES OF FOUR MARINE FISH STOCKS |
title_full_unstemmed |
DENSITY DEPENDENCE AND DENSITY INDEPENDENCE DURING THE EARLY LIFE STAGES OF FOUR MARINE FISH STOCKS |
title_sort |
density dependence and density independence during the early life stages of four marine fish stocks |
publisher |
Figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3299636.v1 https://figshare.com/collections/DENSITY_DEPENDENCE_AND_DENSITY_INDEPENDENCE_DURING_THE_EARLY_LIFE_STAGES_OF_FOUR_MARINE_FISH_STOCKS/3299636/1 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic cod Arctic Barents Sea Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Barents Sea Gadus morhua Northeast Arctic cod |
op_relation |
https://dx.doi.org/10.1890/05-1782 https://dx.doi.org/10.6084/m9.figshare.c.3299636 |
op_rights |
CC-BY http://creativecommons.org/licenses/by/3.0/us |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3299636.v1 https://doi.org/10.1890/05-1782 https://doi.org/10.6084/m9.figshare.c.3299636 |
_version_ |
1766304352541081600 |