Data from: Oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia
Deoxygenation in the global ocean is predicted to induce ecosystem-wide changes. Analysis of multidecadal oxygen time-series projects the northeast Pacific to be a current and future hot spot of oxygen loss. However, the response of marine communities to deoxygenation is unresolved due to the lack o...
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ftzenodo:oai:zenodo.org:4984749 2023-06-06T11:59:53+02:00 Data from: Oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia Chu, Jackson W. F. Tunnicliffe, Verena 2015-12-28 https://zenodo.org/record/4984749 https://doi.org/10.5061/dryad.1p55v unknown doi:10.1111/gcb.12898 https://zenodo.org/communities/dryad https://zenodo.org/record/4984749 https://doi.org/10.5061/dryad.1p55v oai:zenodo.org:4984749 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode epibenthos in situ oxygen limits Metacarcinus magister Metridium facinem Theragra chalcogramma Pandalus hypsinotus video analysis Munida quadrispina Ocean Networks Canada Pandalus jordani Spirontocaris sica Pisaster brevispinus Porichthys notatus Beggiatoa Lycodopsis pacifica ocean hypoxia Pandalus platyceros Halipteris willemoesi oxygen loss Saanich Inlet Ptilosarcus gurneyi Lyopsetta exilis 2006-2013 Chionoectes bairdi Plectobranchus evides ROV transect habitat shrinkage Cancer productus info:eu-repo/semantics/other dataset 2015 ftzenodo https://doi.org/10.5061/dryad.1p55v10.1111/gcb.12898 2023-04-13T21:28:45Z Deoxygenation in the global ocean is predicted to induce ecosystem-wide changes. Analysis of multidecadal oxygen time-series projects the northeast Pacific to be a current and future hot spot of oxygen loss. However, the response of marine communities to deoxygenation is unresolved due to the lack of applicable data on component species. We repeated the same benthic transect (n = 10, between 45 and 190 m depths) over 8 years in a seasonally hypoxic fjord using remotely operated vehicles equipped with oxygen sensors to establish the lower oxygen levels at which 26 common epibenthic species can occur in the wild. By timing our surveys to shoaling hypoxia events, we show that fish and crustacean populations persist even in severe hypoxia (<0.5 mL L−1) with no mortality effects but that migration of mobile species occurs. Consequently, the immediate response to hypoxia expansion is the collapse of community structure; normally partitioned distributions of resident species coalesced and localized densities increased. After oxygen renewal and formation of steep oxygen gradients, former ranges re-established. High frequency data from the nearby VENUS subsea observatory show the average oxygen level at our site declined by ~0.05 mL L−1 year−1 over the period of our study. The increased annual duration of the hypoxic (<1.4 mL L−1) and severely hypoxic periods appears to reflect the oxygen dynamics demonstrated in offshore source waters and the adjacent Strait of Georgia. Should the current trajectory of oxygen loss continue, community homogenization and reduced suitable habitat may become the dominant state of epibenthic systems in the northeast Pacific. In situ oxygen occurrences were not congruent with lethal and sublethal hypoxia thresholds calculated across the literature for major taxonomic groups indicating that research biases toward laboratory studies on Atlantic species are not globally applicable. Region-specific hypoxia thresholds are necessary to predict future impacts of deoxygenation on marine ... Dataset Theragra chalcogramma Zenodo Canada Pacific Venus ENVELOPE(-57.842,-57.842,-61.925,-61.925) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
epibenthos in situ oxygen limits Metacarcinus magister Metridium facinem Theragra chalcogramma Pandalus hypsinotus video analysis Munida quadrispina Ocean Networks Canada Pandalus jordani Spirontocaris sica Pisaster brevispinus Porichthys notatus Beggiatoa Lycodopsis pacifica ocean hypoxia Pandalus platyceros Halipteris willemoesi oxygen loss Saanich Inlet Ptilosarcus gurneyi Lyopsetta exilis 2006-2013 Chionoectes bairdi Plectobranchus evides ROV transect habitat shrinkage Cancer productus |
spellingShingle |
epibenthos in situ oxygen limits Metacarcinus magister Metridium facinem Theragra chalcogramma Pandalus hypsinotus video analysis Munida quadrispina Ocean Networks Canada Pandalus jordani Spirontocaris sica Pisaster brevispinus Porichthys notatus Beggiatoa Lycodopsis pacifica ocean hypoxia Pandalus platyceros Halipteris willemoesi oxygen loss Saanich Inlet Ptilosarcus gurneyi Lyopsetta exilis 2006-2013 Chionoectes bairdi Plectobranchus evides ROV transect habitat shrinkage Cancer productus Chu, Jackson W. F. Tunnicliffe, Verena Data from: Oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia |
topic_facet |
epibenthos in situ oxygen limits Metacarcinus magister Metridium facinem Theragra chalcogramma Pandalus hypsinotus video analysis Munida quadrispina Ocean Networks Canada Pandalus jordani Spirontocaris sica Pisaster brevispinus Porichthys notatus Beggiatoa Lycodopsis pacifica ocean hypoxia Pandalus platyceros Halipteris willemoesi oxygen loss Saanich Inlet Ptilosarcus gurneyi Lyopsetta exilis 2006-2013 Chionoectes bairdi Plectobranchus evides ROV transect habitat shrinkage Cancer productus |
description |
Deoxygenation in the global ocean is predicted to induce ecosystem-wide changes. Analysis of multidecadal oxygen time-series projects the northeast Pacific to be a current and future hot spot of oxygen loss. However, the response of marine communities to deoxygenation is unresolved due to the lack of applicable data on component species. We repeated the same benthic transect (n = 10, between 45 and 190 m depths) over 8 years in a seasonally hypoxic fjord using remotely operated vehicles equipped with oxygen sensors to establish the lower oxygen levels at which 26 common epibenthic species can occur in the wild. By timing our surveys to shoaling hypoxia events, we show that fish and crustacean populations persist even in severe hypoxia (<0.5 mL L−1) with no mortality effects but that migration of mobile species occurs. Consequently, the immediate response to hypoxia expansion is the collapse of community structure; normally partitioned distributions of resident species coalesced and localized densities increased. After oxygen renewal and formation of steep oxygen gradients, former ranges re-established. High frequency data from the nearby VENUS subsea observatory show the average oxygen level at our site declined by ~0.05 mL L−1 year−1 over the period of our study. The increased annual duration of the hypoxic (<1.4 mL L−1) and severely hypoxic periods appears to reflect the oxygen dynamics demonstrated in offshore source waters and the adjacent Strait of Georgia. Should the current trajectory of oxygen loss continue, community homogenization and reduced suitable habitat may become the dominant state of epibenthic systems in the northeast Pacific. In situ oxygen occurrences were not congruent with lethal and sublethal hypoxia thresholds calculated across the literature for major taxonomic groups indicating that research biases toward laboratory studies on Atlantic species are not globally applicable. Region-specific hypoxia thresholds are necessary to predict future impacts of deoxygenation on marine ... |
format |
Dataset |
author |
Chu, Jackson W. F. Tunnicliffe, Verena |
author_facet |
Chu, Jackson W. F. Tunnicliffe, Verena |
author_sort |
Chu, Jackson W. F. |
title |
Data from: Oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia |
title_short |
Data from: Oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia |
title_full |
Data from: Oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia |
title_fullStr |
Data from: Oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia |
title_full_unstemmed |
Data from: Oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia |
title_sort |
data from: oxygen limitations on marine animal distributions and the collapse of epibenthic community structure during shoaling hypoxia |
publishDate |
2015 |
url |
https://zenodo.org/record/4984749 https://doi.org/10.5061/dryad.1p55v |
long_lat |
ENVELOPE(-57.842,-57.842,-61.925,-61.925) |
geographic |
Canada Pacific Venus |
geographic_facet |
Canada Pacific Venus |
genre |
Theragra chalcogramma |
genre_facet |
Theragra chalcogramma |
op_relation |
doi:10.1111/gcb.12898 https://zenodo.org/communities/dryad https://zenodo.org/record/4984749 https://doi.org/10.5061/dryad.1p55v oai:zenodo.org:4984749 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.1p55v10.1111/gcb.12898 |
_version_ |
1767950248516255744 |