Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea
The trophic link between cod (Gadus sp.) and capelin (Mallotus sp.) is important in many panarctic ecosystems. Since the early 2000s, the Northeast Arctic cod stock (G. morhua) in the Barents Sea has increased greatly, and the sea has been exceptionally warm. Such changes have potentially large effe...
Main Authors: | , , , |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
Dryad
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5061/dryad.pv3rc1m |
id |
fttriple:oai:gotriple.eu:50|dedup_wf_001::54f97cb49d810a485c1c6d8aeb69ccff |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:50|dedup_wf_001::54f97cb49d810a485c1c6d8aeb69ccff 2023-05-15T14:30:27+02:00 Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea Fall, Johanna Ciannelli, Lorenzo Skaret, Georg Johannesen, Edda 2019-10-09 https://doi.org/10.5061/dryad.pv3rc1m undefined unknown Dryad https://dx.doi.org/10.5061/dryad.pv3rc1m http://dx.doi.org/10.5061/dryad.pv3rc1m lic_creative-commons 10.5061/dryad.pv3rc1m oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:114580 oai:easy.dans.knaw.nl:easy-dataset:114580 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Generalised Additive Models species distribution ecosystem survey Monitoring Predator-prey interactions spatially variant effects synoptic data collection Barents Sea winter survey spatially explicit models predator-prey Mallotus villosus overlap index spatial association Arctic Gadus morhua Life sciences medicine and health care envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2019 fttriple https://doi.org/10.5061/dryad.pv3rc1m 2023-01-22T16:53:13Z The trophic link between cod (Gadus sp.) and capelin (Mallotus sp.) is important in many panarctic ecosystems. Since the early 2000s, the Northeast Arctic cod stock (G. morhua) in the Barents Sea has increased greatly, and the sea has been exceptionally warm. Such changes have potentially large effects on species distributions and overlap, which in turn could affect the strength of species interactions. Due to its high latitude location, the Barents Sea has strong seasonal variation in physical conditions and interactions. To study drivers of variation in cod-capelin overlap, we use data from two annual surveys run in winter and in autumn of 2004-2015. We first model winter and autumn spatial distributions of mature and immature cod and capelin. We then calculate overlap from model predictions on a grid with similar spatial resolution as the survey data. Our approach allowed us to interpret changes in overlap as species-specific effects of stock size and temperature, while accounting for sampling variation due to sampling time and depth. We found that during winter both species expanded their distribution in response to increased stock sizes, but how strongly and where the expansion occurred varied. The effect of temperature on distributions varied in space, and differed for cod and capelin and for different components of the two species. The results for autumn were clearer and more consistent. Both species expanded their distribution areas as their stock sizes increased. A positive effect of temperature was found in the north-eastern Barents Sea, where temperatures were lowest at the start of the study. Overlap increased and shifted north-eastwards during the study period and remained high despite a decline in the capelin stock. The increased overlap during autumn could mainly be attributed to the shift in cod distribution with increased cod stock biomass. Ecosystem survey 2004-2015Field-collected data on cod and capelin distribution from the Norwegian parts of the ecosystem survey 2004-2015. For details see ... Dataset Arctic cod Arctic Barents Sea Gadus morhua Northeast Arctic cod Unknown Arctic Barents Sea |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Generalised Additive Models species distribution ecosystem survey Monitoring Predator-prey interactions spatially variant effects synoptic data collection Barents Sea winter survey spatially explicit models predator-prey Mallotus villosus overlap index spatial association Arctic Gadus morhua Life sciences medicine and health care envir geo |
spellingShingle |
Generalised Additive Models species distribution ecosystem survey Monitoring Predator-prey interactions spatially variant effects synoptic data collection Barents Sea winter survey spatially explicit models predator-prey Mallotus villosus overlap index spatial association Arctic Gadus morhua Life sciences medicine and health care envir geo Fall, Johanna Ciannelli, Lorenzo Skaret, Georg Johannesen, Edda Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea |
topic_facet |
Generalised Additive Models species distribution ecosystem survey Monitoring Predator-prey interactions spatially variant effects synoptic data collection Barents Sea winter survey spatially explicit models predator-prey Mallotus villosus overlap index spatial association Arctic Gadus morhua Life sciences medicine and health care envir geo |
description |
The trophic link between cod (Gadus sp.) and capelin (Mallotus sp.) is important in many panarctic ecosystems. Since the early 2000s, the Northeast Arctic cod stock (G. morhua) in the Barents Sea has increased greatly, and the sea has been exceptionally warm. Such changes have potentially large effects on species distributions and overlap, which in turn could affect the strength of species interactions. Due to its high latitude location, the Barents Sea has strong seasonal variation in physical conditions and interactions. To study drivers of variation in cod-capelin overlap, we use data from two annual surveys run in winter and in autumn of 2004-2015. We first model winter and autumn spatial distributions of mature and immature cod and capelin. We then calculate overlap from model predictions on a grid with similar spatial resolution as the survey data. Our approach allowed us to interpret changes in overlap as species-specific effects of stock size and temperature, while accounting for sampling variation due to sampling time and depth. We found that during winter both species expanded their distribution in response to increased stock sizes, but how strongly and where the expansion occurred varied. The effect of temperature on distributions varied in space, and differed for cod and capelin and for different components of the two species. The results for autumn were clearer and more consistent. Both species expanded their distribution areas as their stock sizes increased. A positive effect of temperature was found in the north-eastern Barents Sea, where temperatures were lowest at the start of the study. Overlap increased and shifted north-eastwards during the study period and remained high despite a decline in the capelin stock. The increased overlap during autumn could mainly be attributed to the shift in cod distribution with increased cod stock biomass. Ecosystem survey 2004-2015Field-collected data on cod and capelin distribution from the Norwegian parts of the ecosystem survey 2004-2015. For details see ... |
format |
Dataset |
author |
Fall, Johanna Ciannelli, Lorenzo Skaret, Georg Johannesen, Edda |
author_facet |
Fall, Johanna Ciannelli, Lorenzo Skaret, Georg Johannesen, Edda |
author_sort |
Fall, Johanna |
title |
Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea |
title_short |
Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea |
title_full |
Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea |
title_fullStr |
Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea |
title_full_unstemmed |
Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea |
title_sort |
data from: seasonal dynamics of spatial distribution and overlap between northeast arctic cod (gadus morhua) and capelin (mallotus villosus) in the barents sea |
publisher |
Dryad |
publishDate |
2019 |
url |
https://doi.org/10.5061/dryad.pv3rc1m |
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_source |
10.5061/dryad.pv3rc1m oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:114580 oai:easy.dans.knaw.nl:easy-dataset:114580 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
https://dx.doi.org/10.5061/dryad.pv3rc1m http://dx.doi.org/10.5061/dryad.pv3rc1m |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.pv3rc1m |
_version_ |
1766304293196922880 |