Spatial distribution analysis of nektonic species in the Barents Sea, in relation to climate change and fishing pressure
Climate change alters species distribution, affecting the organization and functioning of ecosystems. The Barents Sea, a sub arctic shelf sea located to the north of Norway and Russia, has experienced a substantial warming in the last decades, leading to a redistribution of the species that inhabit...
Main Author: | |
---|---|
Other Authors: | , |
Format: | Text |
Language: | Italian |
Published: |
Pisa University
2022
|
Subjects: | |
Online Access: | http://etd.adm.unipi.it/theses/available/etd-05062022-185139/ |
id |
ftunivpisa:oai:etd.adm.unipi.it:etd-05062022-185139 |
---|---|
record_format |
openpolar |
spelling |
ftunivpisa:oai:etd.adm.unipi.it:etd-05062022-185139 2023-05-15T14:53:00+02:00 Spatial distribution analysis of nektonic species in the Barents Sea, in relation to climate change and fishing pressure SCHENA, EMMA Maltagliati, Ferruccio Zucchetta, Matteo 2022-05-19 application/pdf http://etd.adm.unipi.it/theses/available/etd-05062022-185139/ it ita Pisa University http://etd.adm.unipi.it/theses/available/etd-05062022-185139/ info:eu-repo/semantics/openAccess Copyright information available at source archive http://etd.adm.unipi.it/theses/available/etd-05062022-185139/ BIOLOGIA text 2022 ftunivpisa 2022-12-26T14:19:19Z Climate change alters species distribution, affecting the organization and functioning of ecosystems. The Barents Sea, a sub arctic shelf sea located to the north of Norway and Russia, has experienced a substantial warming in the last decades, leading to a redistribution of the species that inhabit it. Nektonic species are expected to respond more quickly to climatic changes, causing substantial community rearrangement. Moreover, many of the boreal fish that are experiencing a displacement in the basin are commercially important and thus changes in their distribution should lead to analogous shifts in the fishing effort. This aspect, together with the overall increased human activity in the region, favored by the drastic loss of sea ice cover, could represent an additional stress for the already challenged Arctic ecosystem, highlighting the compelling urge to understand the species distribution dynamics and their main drivers. In this study Species Distribution Models (SDMs) were developed, following a hierarchical procedure, for selected Arctic and boreal nektonic species to investigate the association between climatic changes and the species distribution dynamics, in terms of both biomass and occurrence, in the last decades and the possible correlation of the latter with anthropogenic activity, namely fishing effort and maritime traffic. A time range of seventeen years, from 2004 to 2020, was considered to investigate a potential temporal pattern. Generalized linear models were developed for two Arctic species, Boreogadus saida and Triglops nybelini, and two boreal species, Gadus morhua and Melanogrammus aeglefinus, chosen on the basis of their abundance in the area and functional traits. Nine environmental factors were considered to describe environmental conditions in the basin and their variability through the years. Results showed a strong association between distribution of the species and the environmental drivers, whose spatial dynamic over time seems to be in relation with the spatial-temporal ... Text Arctic Barents Sea Boreogadus saida Climate change Gadus morhua Sea ice Università di Pisa: ETD (Electronic Theses and Dissertations) Arctic Barents Sea Norway |
institution |
Open Polar |
collection |
Università di Pisa: ETD (Electronic Theses and Dissertations) |
op_collection_id |
ftunivpisa |
language |
Italian |
topic |
BIOLOGIA |
spellingShingle |
BIOLOGIA SCHENA, EMMA Spatial distribution analysis of nektonic species in the Barents Sea, in relation to climate change and fishing pressure |
topic_facet |
BIOLOGIA |
description |
Climate change alters species distribution, affecting the organization and functioning of ecosystems. The Barents Sea, a sub arctic shelf sea located to the north of Norway and Russia, has experienced a substantial warming in the last decades, leading to a redistribution of the species that inhabit it. Nektonic species are expected to respond more quickly to climatic changes, causing substantial community rearrangement. Moreover, many of the boreal fish that are experiencing a displacement in the basin are commercially important and thus changes in their distribution should lead to analogous shifts in the fishing effort. This aspect, together with the overall increased human activity in the region, favored by the drastic loss of sea ice cover, could represent an additional stress for the already challenged Arctic ecosystem, highlighting the compelling urge to understand the species distribution dynamics and their main drivers. In this study Species Distribution Models (SDMs) were developed, following a hierarchical procedure, for selected Arctic and boreal nektonic species to investigate the association between climatic changes and the species distribution dynamics, in terms of both biomass and occurrence, in the last decades and the possible correlation of the latter with anthropogenic activity, namely fishing effort and maritime traffic. A time range of seventeen years, from 2004 to 2020, was considered to investigate a potential temporal pattern. Generalized linear models were developed for two Arctic species, Boreogadus saida and Triglops nybelini, and two boreal species, Gadus morhua and Melanogrammus aeglefinus, chosen on the basis of their abundance in the area and functional traits. Nine environmental factors were considered to describe environmental conditions in the basin and their variability through the years. Results showed a strong association between distribution of the species and the environmental drivers, whose spatial dynamic over time seems to be in relation with the spatial-temporal ... |
author2 |
Maltagliati, Ferruccio Zucchetta, Matteo |
format |
Text |
author |
SCHENA, EMMA |
author_facet |
SCHENA, EMMA |
author_sort |
SCHENA, EMMA |
title |
Spatial distribution analysis of nektonic species in the Barents Sea, in relation to climate change and fishing pressure |
title_short |
Spatial distribution analysis of nektonic species in the Barents Sea, in relation to climate change and fishing pressure |
title_full |
Spatial distribution analysis of nektonic species in the Barents Sea, in relation to climate change and fishing pressure |
title_fullStr |
Spatial distribution analysis of nektonic species in the Barents Sea, in relation to climate change and fishing pressure |
title_full_unstemmed |
Spatial distribution analysis of nektonic species in the Barents Sea, in relation to climate change and fishing pressure |
title_sort |
spatial distribution analysis of nektonic species in the barents sea, in relation to climate change and fishing pressure |
publisher |
Pisa University |
publishDate |
2022 |
url |
http://etd.adm.unipi.it/theses/available/etd-05062022-185139/ |
geographic |
Arctic Barents Sea Norway |
geographic_facet |
Arctic Barents Sea Norway |
genre |
Arctic Barents Sea Boreogadus saida Climate change Gadus morhua Sea ice |
genre_facet |
Arctic Barents Sea Boreogadus saida Climate change Gadus morhua Sea ice |
op_source |
http://etd.adm.unipi.it/theses/available/etd-05062022-185139/ |
op_relation |
http://etd.adm.unipi.it/theses/available/etd-05062022-185139/ |
op_rights |
info:eu-repo/semantics/openAccess Copyright information available at source archive |
_version_ |
1766324427385995264 |