Occurrence of tropical fishes in temperate southeastern Australia: Role of the East Australian Current

Booth, DJ; Figueira, WF; Gregson, MA; Brown, L; Beretta, G

Occurrence of tropical fishes in temperate southeastern Australia: Role of the East Australian Current

Booth, DJ

Figueira, WF

Gregson, MA Brown, L Beretta, G

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Publication Type:: Journal Article
Citation:: Estuarine, Coastal and Shelf Science, 2007, 72 (1-2), pp. 102 - 114
Issue Date:: 2007-03-01

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Field	Value	Language
dc.contributor.author	Booth, DJ https://orcid.org/0000-0002-8256-1412	en_US
dc.contributor.author	Figueira, WF https://orcid.org/0000-0001-9472-8710	en_US
dc.contributor.author	Gregson, MA	en_US
dc.contributor.author	Brown, L	en_US
dc.contributor.author	Beretta, G	en_US
dc.date.issued	2007-03-01	en_US
dc.identifier.citation	Estuarine, Coastal and Shelf Science, 2007, 72 (1-2), pp. 102 - 114	en_US
dc.identifier.issn	0272-7714	en_US
dc.identifier.uri	http://hdl.handle.net/10453/658
dc.description.abstract	Dispersal of larval propagules is the major mechanism facilitating connectivity of marine populations. However, only a fraction of larvae settle in suitable habitat. For coral reef fishes, many larvae are advected away from coral reefs, often despite strong behavioural mechanisms (including swimming), and some may travel long distances away from the tropics. Here we document the occurrence of tropical reef fishes along the southeast coast of Australia between 2003 and 2005 and evaluate the role of the East Australian Current (EAC) in driving this pattern. In total we observed 47 species of tropical fishes from 11 families during the summer recruitment season (January to May) at locations spanning most of the length of the New South Wales coast (28° S-37.5° S latitude, ∼1700 km from the southern end of the Great Barrier Reef). Southern locations tended to have reduced richness and density relative to northern ones. In general, the southward extent of distribution of the most commonly observed species was well explained by their planktonic larval durations. Recruitment events tended to be much more episodic in Merimbula (37° S) than Sydney (34° S), but there was little evidence for interannual similarity in the spatial patterns of recruitment of individual species with exception of the numerical dominance of Abudefduf vaigiensis and Abudefduf sexfasciatus (Pomacentridae) at the Sydney location and of Chaetodon auriga and Chaetodon flavirostris (Chaetodontidae) at the Merimbula location. Despite strong evidence for the role of the EAC in the transport of these species at a coastal scale, we found little evidence that individual recruitment events were correlated with local increases in water temperature that would be associated with EAC ingress. © 2006 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Estuarine, Coastal and Shelf Science	en_US
dc.relation.isbasedon	10.1016/j.ecss.2006.10.003	en_US
dc.subject.classification	Marine Biology & Hydrobiology	en_US
dc.title	Occurrence of tropical fishes in temperate southeastern Australia: Role of the East Australian Current	en_US
dc.type	Journal Article
utslib.citation.volume	1-2	en_US
utslib.citation.volume	72	en_US
utslib.for	0602 Ecology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	closed_access
pubs.issue	1-2	en_US
pubs.publication-status	Published	en_US
pubs.volume	72	en_US

Abstract:

Dispersal of larval propagules is the major mechanism facilitating connectivity of marine populations. However, only a fraction of larvae settle in suitable habitat. For coral reef fishes, many larvae are advected away from coral reefs, often despite strong behavioural mechanisms (including swimming), and some may travel long distances away from the tropics. Here we document the occurrence of tropical reef fishes along the southeast coast of Australia between 2003 and 2005 and evaluate the role of the East Australian Current (EAC) in driving this pattern. In total we observed 47 species of tropical fishes from 11 families during the summer recruitment season (January to May) at locations spanning most of the length of the New South Wales coast (28° S-37.5° S latitude, ∼1700 km from the southern end of the Great Barrier Reef). Southern locations tended to have reduced richness and density relative to northern ones. In general, the southward extent of distribution of the most commonly observed species was well explained by their planktonic larval durations. Recruitment events tended to be much more episodic in Merimbula (37° S) than Sydney (34° S), but there was little evidence for interannual similarity in the spatial patterns of recruitment of individual species with exception of the numerical dominance of Abudefduf vaigiensis and Abudefduf sexfasciatus (Pomacentridae) at the Sydney location and of Chaetodon auriga and Chaetodon flavirostris (Chaetodontidae) at the Merimbula location. Despite strong evidence for the role of the EAC in the transport of these species at a coastal scale, we found little evidence that individual recruitment events were correlated with local increases in water temperature that would be associated with EAC ingress. © 2006 Elsevier Ltd. All rights reserved.

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http://hdl.handle.net/10453/658