Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement
Sea ice retreat is a key event affecting Southern Ocean ecosystems during spring and summer. The impacts of this change can be seen in these ecosystems from primary producers to top predators, through biological, chemical and physical systems. We apply a Lagrangian particle tracking method to invest...
Published in: | Journal of Marine Systems |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier Science Bv
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1016/j.jmarsys.2018.09.005 http://ecite.utas.edu.au/128527 |
id |
ftunivtasecite:oai:ecite.utas.edu.au:128527 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasecite:oai:ecite.utas.edu.au:128527 2023-05-15T13:55:18+02:00 Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement Mori, M Corney, SP Melbourne-Thomas, J Klocker, A Kawaguchi, S Constable, A Sumner, M 2019 https://doi.org/10.1016/j.jmarsys.2018.09.005 http://ecite.utas.edu.au/128527 en eng Elsevier Science Bv http://dx.doi.org/10.1016/j.jmarsys.2018.09.005 http://purl.org/au-research/grants/arc/DE140100076 Mori, M and Corney, SP and Melbourne-Thomas, J and Klocker, A and Kawaguchi, S and Constable, A and Sumner, M, Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement, Journal of Marine Systems, 189 pp. 50-61. ISSN 0924-7963 (2019) [Refereed Article] http://ecite.utas.edu.au/128527 Earth Sciences Oceanography Physical Oceanography Refereed Article PeerReviewed 2019 ftunivtasecite https://doi.org/10.1016/j.jmarsys.2018.09.005 2020-03-16T23:16:16Z Sea ice retreat is a key event affecting Southern Ocean ecosystems during spring and summer. The impacts of this change can be seen in these ecosystems from primary producers to top predators, through biological, chemical and physical systems. We apply a Lagrangian particle tracking method to investigate transport processes from the retreating sea ice edge in the Southern Ocean during spring and summer. The resulting distribution of surface krill patches is used as an case study for our modelling approach. Antarctic krill ( Euphausia superba ), a secondary producer, plays a key role in the Southern Ocean ecosystems. Antarctic krill are highly abundant in the Southern Ocean with a complex distribution pattern both in the horizontal and vertical dimensions. Observations dating back to the 1930s show that juvenile krill often form surface patches high density clusters of krill at the ocean surface throughout the Southern Ocean during the spring and summer seasons. We develop a hypothesis, based on historical observations, that surface krill patches composed of juvenile krill move passively with ocean currents after their release from the sea ice edge zone in spring. Applying this hypothesis and method to the Southern Hemisphere spring/summer, leads to results that indicate that the observed changes in distribution of krill patches from historical to contemporary records could be related to the southward shift of the sea ice edge over the last century. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Sea ice Southern Ocean eCite UTAS (University of Tasmania) Antarctic Southern Ocean The Antarctic Journal of Marine Systems 189 50 61 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Physical Oceanography |
spellingShingle |
Earth Sciences Oceanography Physical Oceanography Mori, M Corney, SP Melbourne-Thomas, J Klocker, A Kawaguchi, S Constable, A Sumner, M Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement |
topic_facet |
Earth Sciences Oceanography Physical Oceanography |
description |
Sea ice retreat is a key event affecting Southern Ocean ecosystems during spring and summer. The impacts of this change can be seen in these ecosystems from primary producers to top predators, through biological, chemical and physical systems. We apply a Lagrangian particle tracking method to investigate transport processes from the retreating sea ice edge in the Southern Ocean during spring and summer. The resulting distribution of surface krill patches is used as an case study for our modelling approach. Antarctic krill ( Euphausia superba ), a secondary producer, plays a key role in the Southern Ocean ecosystems. Antarctic krill are highly abundant in the Southern Ocean with a complex distribution pattern both in the horizontal and vertical dimensions. Observations dating back to the 1930s show that juvenile krill often form surface patches high density clusters of krill at the ocean surface throughout the Southern Ocean during the spring and summer seasons. We develop a hypothesis, based on historical observations, that surface krill patches composed of juvenile krill move passively with ocean currents after their release from the sea ice edge zone in spring. Applying this hypothesis and method to the Southern Hemisphere spring/summer, leads to results that indicate that the observed changes in distribution of krill patches from historical to contemporary records could be related to the southward shift of the sea ice edge over the last century. |
format |
Article in Journal/Newspaper |
author |
Mori, M Corney, SP Melbourne-Thomas, J Klocker, A Kawaguchi, S Constable, A Sumner, M |
author_facet |
Mori, M Corney, SP Melbourne-Thomas, J Klocker, A Kawaguchi, S Constable, A Sumner, M |
author_sort |
Mori, M |
title |
Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement |
title_short |
Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement |
title_full |
Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement |
title_fullStr |
Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement |
title_full_unstemmed |
Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement |
title_sort |
modelling dispersal of juvenile krill released from the antarctic ice edge: ecosystem implications of ocean movement |
publisher |
Elsevier Science Bv |
publishDate |
2019 |
url |
https://doi.org/10.1016/j.jmarsys.2018.09.005 http://ecite.utas.edu.au/128527 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Sea ice Southern Ocean |
op_relation |
http://dx.doi.org/10.1016/j.jmarsys.2018.09.005 http://purl.org/au-research/grants/arc/DE140100076 Mori, M and Corney, SP and Melbourne-Thomas, J and Klocker, A and Kawaguchi, S and Constable, A and Sumner, M, Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement, Journal of Marine Systems, 189 pp. 50-61. ISSN 0924-7963 (2019) [Refereed Article] http://ecite.utas.edu.au/128527 |
op_doi |
https://doi.org/10.1016/j.jmarsys.2018.09.005 |
container_title |
Journal of Marine Systems |
container_volume |
189 |
container_start_page |
50 |
op_container_end_page |
61 |
_version_ |
1766261717808971776 |