Entrainment of larval fish assemblages from the inner shelf into the East Australian Current and into the western Tasman Front

Mullaney, TJ; Miskiewicz, AG; Baird, ME; Burns, PTP; Suthers, IM

Entrainment of larval fish assemblages from the inner shelf into the East Australian Current and into the western Tasman Front

Mullaney, TJ Miskiewicz, AG Baird, ME

Burns, PTP Suthers, IM

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Publication Type:: Journal Article
Citation:: Fisheries Oceanography, 2011, 20 (5), pp. 434 - 447
Issue Date:: 2011-09-01

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Field	Value	Language
dc.contributor.author	Mullaney, TJ	en_US
dc.contributor.author	Miskiewicz, AG	en_US
dc.contributor.author	Baird, ME https://orcid.org/0000-0003-4955-2298	en_US
dc.contributor.author	Burns, PTP	en_US
dc.contributor.author	Suthers, IM	en_US
dc.date.issued	2011-09-01	en_US
dc.identifier.citation	Fisheries Oceanography, 2011, 20 (5), pp. 434 - 447	en_US
dc.identifier.issn	1054-6006	en_US
dc.identifier.uri	http://hdl.handle.net/10453/18057
dc.description.abstract	Entrainment and transport of larval fish assemblages by the East Australian Current (EAC) were examined from the coastal waters of northern New South Wales (NSW) to the western Tasman Front, via the separation of the EAC from the coast, during the austral spring of 2004. Shore-normal transects from the coast to the EAC off northern NSW revealed an inner shelf assemblage of near-shore families (Clupeidae, Engraulidae, Platycephalidae and Triglidae), an EAC assemblage dominated by Myctophidae and Gonostomatidae, and a broadly distributed assemblage over the continental shelf dominated by Scombridae and Carangidae. Further south and after the EAC had separated from the coast, we observed a western Tasman Front assemblage of inner shelf and shelf families (Clupeidae, Engraulidae, Serranidae, Scombridae, Carangidae, Bothidae and Macroramphosidae). The abundance of these families declined with distance from the coast. Surprisingly, there was no distinctive or abundant larval fish assemblage in the chlorophyll- and zooplankton-enriched waters of the Tasman Sea. Water type properties (temperature-salinity, T-S), the larval fish assemblages and family-specific T-S signatures revealed the western Tasman Front to be an entrained mix of EAC and coastal water types. We found an abundance of commercially important species including larval sardine (Sardinops sagax, Clupeidae), blue mackerel (Scomber australasicus, Scombridae) and anchovy (Engraulis australis, Engraulidae). The entrainment and transport of larval fish from the northern inner shelf to the western Tasman Front by the EAC reflects similar processes with the Gulf Stream Front and the Kuroshio Extension. © 2011 Blackwell Publishing Ltd.	en_US
dc.relation.ispartof	Fisheries Oceanography	en_US
dc.relation.isbasedon	10.1111/j.1365-2419.2011.00594.x	en_US
dc.subject.classification	Fisheries	en_US
dc.title	Entrainment of larval fish assemblages from the inner shelf into the East Australian Current and into the western Tasman Front	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	20	en_US
utslib.for	0704 Fisheries Sciences	en_US
utslib.for	0405 Oceanography	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
utslib.copyright.status	closed_access
pubs.issue	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	20	en_US

Abstract:

Entrainment and transport of larval fish assemblages by the East Australian Current (EAC) were examined from the coastal waters of northern New South Wales (NSW) to the western Tasman Front, via the separation of the EAC from the coast, during the austral spring of 2004. Shore-normal transects from the coast to the EAC off northern NSW revealed an inner shelf assemblage of near-shore families (Clupeidae, Engraulidae, Platycephalidae and Triglidae), an EAC assemblage dominated by Myctophidae and Gonostomatidae, and a broadly distributed assemblage over the continental shelf dominated by Scombridae and Carangidae. Further south and after the EAC had separated from the coast, we observed a western Tasman Front assemblage of inner shelf and shelf families (Clupeidae, Engraulidae, Serranidae, Scombridae, Carangidae, Bothidae and Macroramphosidae). The abundance of these families declined with distance from the coast. Surprisingly, there was no distinctive or abundant larval fish assemblage in the chlorophyll- and zooplankton-enriched waters of the Tasman Sea. Water type properties (temperature-salinity, T-S), the larval fish assemblages and family-specific T-S signatures revealed the western Tasman Front to be an entrained mix of EAC and coastal water types. We found an abundance of commercially important species including larval sardine (Sardinops sagax, Clupeidae), blue mackerel (Scomber australasicus, Scombridae) and anchovy (Engraulis australis, Engraulidae). The entrainment and transport of larval fish from the northern inner shelf to the western Tasman Front by the EAC reflects similar processes with the Gulf Stream Front and the Kuroshio Extension. © 2011 Blackwell Publishing Ltd.

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