Reviewing evidence of marine ecosystem change off South Africa
Recent changes have been observed in South African marine ecosystems. The main pressures on these ecosystems are fishing, climate change, pollution, ocean acidification and mining. The best long-term datasets are for trends in fishing pressures but there are many gaps, especially for non-commercial...
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ftdeakinunifig:oai:figshare.com:article/20828233 2024-06-23T07:55:49+00:00 Reviewing evidence of marine ecosystem change off South Africa CL Moloney ST Fennessy MJ Gibbons A Roychoudhury FA Shillington BP von der Heyden K Watermeyer 2013-09-01T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30103464 https://figshare.com/articles/journal_contribution/Reviewing_evidence_of_marine_ecosystem_change_off_South_Africa/20828233 unknown http://hdl.handle.net/10536/DRO/DU:30103464 https://figshare.com/articles/journal_contribution/Reviewing_evidence_of_marine_ecosystem_change_off_South_Africa/20828233 All Rights Reserved climate change fishing global change marine ecosystems ocean acidification offshore mining pollution School of Life and Environmental Sciences Text Journal contribution 2013 ftdeakinunifig 2024-06-06T01:31:39Z Recent changes have been observed in South African marine ecosystems. The main pressures on these ecosystems are fishing, climate change, pollution, ocean acidification and mining. The best long-term datasets are for trends in fishing pressures but there are many gaps, especially for non-commercial species. Fishing pressures have varied over time, depending on the species being caught. Little information exists for trends in other anthropogenic pressures. Field observations of environmental variables are limited in time and space. Remotely sensed satellite data have improved spatial and temporal coverage but the time-series are still too short to distinguish long-term trends from interannual and decadal variability. There are indications of recent cooling on the West and South coasts and warming on the East Coast over a period of 20–30 years. Oxygen concentrations on the West Coast have decreased over this period. Observed changes in offshore marine communities include southward and eastward changes in species distributions, changes in abundance of species, and probable alterations in foodweb dynamics. Causes of observed changes are difficult to attribute. Full understanding of marine ecosystem change requires ongoing and effective data collection, management and archiving, and coordination in carrying out ecosystem research. Article in Journal/Newspaper Ocean acidification DRO - Deakin Research Online |
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Open Polar |
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DRO - Deakin Research Online |
op_collection_id |
ftdeakinunifig |
language |
unknown |
topic |
climate change fishing global change marine ecosystems ocean acidification offshore mining pollution School of Life and Environmental Sciences |
spellingShingle |
climate change fishing global change marine ecosystems ocean acidification offshore mining pollution School of Life and Environmental Sciences CL Moloney ST Fennessy MJ Gibbons A Roychoudhury FA Shillington BP von der Heyden K Watermeyer Reviewing evidence of marine ecosystem change off South Africa |
topic_facet |
climate change fishing global change marine ecosystems ocean acidification offshore mining pollution School of Life and Environmental Sciences |
description |
Recent changes have been observed in South African marine ecosystems. The main pressures on these ecosystems are fishing, climate change, pollution, ocean acidification and mining. The best long-term datasets are for trends in fishing pressures but there are many gaps, especially for non-commercial species. Fishing pressures have varied over time, depending on the species being caught. Little information exists for trends in other anthropogenic pressures. Field observations of environmental variables are limited in time and space. Remotely sensed satellite data have improved spatial and temporal coverage but the time-series are still too short to distinguish long-term trends from interannual and decadal variability. There are indications of recent cooling on the West and South coasts and warming on the East Coast over a period of 20–30 years. Oxygen concentrations on the West Coast have decreased over this period. Observed changes in offshore marine communities include southward and eastward changes in species distributions, changes in abundance of species, and probable alterations in foodweb dynamics. Causes of observed changes are difficult to attribute. Full understanding of marine ecosystem change requires ongoing and effective data collection, management and archiving, and coordination in carrying out ecosystem research. |
format |
Article in Journal/Newspaper |
author |
CL Moloney ST Fennessy MJ Gibbons A Roychoudhury FA Shillington BP von der Heyden K Watermeyer |
author_facet |
CL Moloney ST Fennessy MJ Gibbons A Roychoudhury FA Shillington BP von der Heyden K Watermeyer |
author_sort |
CL Moloney |
title |
Reviewing evidence of marine ecosystem change off South Africa |
title_short |
Reviewing evidence of marine ecosystem change off South Africa |
title_full |
Reviewing evidence of marine ecosystem change off South Africa |
title_fullStr |
Reviewing evidence of marine ecosystem change off South Africa |
title_full_unstemmed |
Reviewing evidence of marine ecosystem change off South Africa |
title_sort |
reviewing evidence of marine ecosystem change off south africa |
publishDate |
2013 |
url |
http://hdl.handle.net/10536/DRO/DU:30103464 https://figshare.com/articles/journal_contribution/Reviewing_evidence_of_marine_ecosystem_change_off_South_Africa/20828233 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://hdl.handle.net/10536/DRO/DU:30103464 https://figshare.com/articles/journal_contribution/Reviewing_evidence_of_marine_ecosystem_change_off_South_Africa/20828233 |
op_rights |
All Rights Reserved |
_version_ |
1802648547114352640 |