Climate change alters stability and species potential interactions in a large marine ecosystem.
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| Title: | Climate change alters stability and species potential interactions in a large marine ecosystem. |
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| Authors: | Griffith, Gary P.1,2 gary.griffith@utas.edu.au, Strutton, Peter G.1,3, Semmens, Jayson M.1 |
| Source: | Global Change Biology. Jan2018, Vol. 24 Issue 1, pe90-e100. 11p. 2 Charts, 3 Graphs. |
| Subjects: | Marine ecology, Ecosystems, Climate change, Fisheries, Species |
| Abstract: | We have little empirical evidence of how large-scale overlaps between large numbers of marine species may have altered in response to human impacts. Here, we synthesized all available distribution data (>1 million records) since 1992 for 61 species of the East Australian marine ecosystem, a global hot spot of ocean warming and continuing fisheries exploitation. Using a novel approach, we constructed networks of the annual changes in geographical overlaps between species. Using indices of changes in species overlap, we quantified changes in the ecosystem stability, species robustness, species sensitivity and structural keystone species. We then compared the species overlap indices with environmental and fisheries data to identify potential factors leading to the changes in distributional overlaps between species. We found that the structure of the ecosystem has changed with a decrease in asymmetrical geographical overlaps between species. This suggests that the ecosystem has become less stable and potentially more susceptible to environmental perturbations. Most species have shown a decrease in overlaps with other species. The greatest decrease in species overlap robustness and sensitivity to the loss of other species has occurred in the pelagic community. Some demersal species have become more robust and less sensitive. Pelagic structural keystone species, predominately the tunas and billfish, have been replaced by demersal fish species. The changes in species overlap were strongly correlated with regional oceanographic changes, in particular increasing ocean warming and the southward transport of warmer and saltier water with the East Australian Current, but less correlated with fisheries catch. Our study illustrates how large-scale multispecies distribution changes can help identify structural changes in marine ecosystems associated with climate change. [ABSTRACT FROM AUTHOR] |
| Copyright of Global Change Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 126984492 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Climate change alters stability and species potential interactions in a large marine ecosystem. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Griffith%2C+Gary+P%2E%22">Griffith, Gary P.</searchLink><relatesTo>1,2</relatesTo><i> gary.griffith@utas.edu.au</i><br /><searchLink fieldCode="AR" term="%22Strutton%2C+Peter+G%2E%22">Strutton, Peter G.</searchLink><relatesTo>1,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Semmens%2C+Jayson+M%2E%22">Semmens, Jayson M.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Global+Change+Biology%22">Global Change Biology</searchLink>. Jan2018, Vol. 24 Issue 1, pe90-e100. 11p. 2 Charts, 3 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Marine+ecology%22">Marine ecology</searchLink><br /><searchLink fieldCode="DE" term="%22Ecosystems%22">Ecosystems</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br /><searchLink fieldCode="DE" term="%22Fisheries%22">Fisheries</searchLink><br /><searchLink fieldCode="DE" term="%22Species%22">Species</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: We have little empirical evidence of how large-scale overlaps between large numbers of marine species may have altered in response to human impacts. Here, we synthesized all available distribution data (>1 million records) since 1992 for 61 species of the East Australian marine ecosystem, a global hot spot of ocean warming and continuing fisheries exploitation. Using a novel approach, we constructed networks of the annual changes in geographical overlaps between species. Using indices of changes in species overlap, we quantified changes in the ecosystem stability, species robustness, species sensitivity and structural keystone species. We then compared the species overlap indices with environmental and fisheries data to identify potential factors leading to the changes in distributional overlaps between species. We found that the structure of the ecosystem has changed with a decrease in asymmetrical geographical overlaps between species. This suggests that the ecosystem has become less stable and potentially more susceptible to environmental perturbations. Most species have shown a decrease in overlaps with other species. The greatest decrease in species overlap robustness and sensitivity to the loss of other species has occurred in the pelagic community. Some demersal species have become more robust and less sensitive. Pelagic structural keystone species, predominately the tunas and billfish, have been replaced by demersal fish species. The changes in species overlap were strongly correlated with regional oceanographic changes, in particular increasing ocean warming and the southward transport of warmer and saltier water with the East Australian Current, but less correlated with fisheries catch. Our study illustrates how large-scale multispecies distribution changes can help identify structural changes in marine ecosystems associated with climate change. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Global Change Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=126984492 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/gcb.13891 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: e90 Subjects: – SubjectFull: Marine ecology Type: general – SubjectFull: Ecosystems Type: general – SubjectFull: Climate change Type: general – SubjectFull: Fisheries Type: general – SubjectFull: Species Type: general Titles: – TitleFull: Climate change alters stability and species potential interactions in a large marine ecosystem. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Griffith, Gary P. – PersonEntity: Name: NameFull: Strutton, Peter G. – PersonEntity: Name: NameFull: Semmens, Jayson M. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2018 Type: published Y: 2018 Identifiers: – Type: issn-print Value: 13541013 Numbering: – Type: volume Value: 24 – Type: issue Value: 1 Titles: – TitleFull: Global Change Biology Type: main |
| ResultId | 1 |
