Predicting success of range-expanding coral reef fish in temperate habitats using temperature-abundance relationships

Booth, DJ; Beretta, GA; Brown, L; Figueira, WF

Predicting success of range-expanding coral reef fish in temperate habitats using temperature-abundance relationships

Booth, DJ

Beretta, GA Brown, L Figueira, WF

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Publication Type:: Journal Article
Citation:: Frontiers in Marine Science, 2018, 5 (FEB)
Issue Date:: 2018-02-13

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Field	Value	Language
dc.contributor.author	Booth, DJ https://orcid.org/0000-0002-8256-1412	en_US
dc.contributor.author	Beretta, GA	en_US
dc.contributor.author	Brown, L	en_US
dc.contributor.author	Figueira, WF	en_US
dc.date.issued	2018-02-13	en_US
dc.identifier.citation	Frontiers in Marine Science, 2018, 5 (FEB)	en_US
dc.identifier.uri	http://hdl.handle.net/10453/122587
dc.description.abstract	© 2018 Booth, Beretta, Brown and Figueira. An 18-year database of coral reef fish expatriation poleward in South East Australia was used to estimate persistence of coal reef fish recruits on temperate reefs. Surveys have identified over 150 coral reef fish species recruiting to temperate reefs at latitudes of 34°S (Sydney) and 60 species to 37°S (Merimbula) with 20 and 5 species respectively overwintering in at least 1 year over the study duration. We developed indices of vulnerability of key species to drops in water temperatures, by relating drops in abundances of species to temperature drops. Twenty species were ranked according to their temperature vulnerability. Overall, the families Chaetodontidae (butterflyfishes), Acanthuridae (surgeonfishes), Labridae (wrasses) and Pomacetnridae (damselfishes) had similar cold-water tolerance. However, there was considerable variability within families, for instance in the Pomacentridae, species from the genus Abudefduf appeared to have better cold-temperature tolerance than the other species. Predicted minimum overwintering temperature varied from 15.6°C to 19.8°C, with some species showing lower Tzero at Merimbula, the more poleward location. There was general concordance between a species' tolerance to cold-water and its tendency to occur as an overwinter but also notable exceptions. So while this work demonstrates the potential utility of tolerance to seasonal temperature drops as a means to predict range expansion capacity of vagrant species, the exceptional cases serve to highlight alternative factors. Specifically, tolerance to seasonal cooling of water is not the only important factor when predicting the range expansion capacity of a species. Factors affecting the general abundance of the vagrants, such as habitat suitability and competitor/predator environments will also be critical where overwinter survival becomes a lottery.	en_US
dc.relation.ispartof	Frontiers in Marine Science	en_US
dc.relation.isbasedon	10.3389/fmars.2018.00031	en_US
dc.title	Predicting success of range-expanding coral reef fish in temperate habitats using temperature-abundance relationships	en_US
dc.type	Journal Article
utslib.citation.volume	FEB	en_US
utslib.citation.volume	5	en_US
utslib.for	0602 Ecology	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
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	open_access
pubs.issue	FEB	en_US
pubs.publication-status	Published	en_US
pubs.volume	5	en_US

Abstract:

© 2018 Booth, Beretta, Brown and Figueira. An 18-year database of coral reef fish expatriation poleward in South East Australia was used to estimate persistence of coal reef fish recruits on temperate reefs. Surveys have identified over 150 coral reef fish species recruiting to temperate reefs at latitudes of 34°S (Sydney) and 60 species to 37°S (Merimbula) with 20 and 5 species respectively overwintering in at least 1 year over the study duration. We developed indices of vulnerability of key species to drops in water temperatures, by relating drops in abundances of species to temperature drops. Twenty species were ranked according to their temperature vulnerability. Overall, the families Chaetodontidae (butterflyfishes), Acanthuridae (surgeonfishes), Labridae (wrasses) and Pomacetnridae (damselfishes) had similar cold-water tolerance. However, there was considerable variability within families, for instance in the Pomacentridae, species from the genus Abudefduf appeared to have better cold-temperature tolerance than the other species. Predicted minimum overwintering temperature varied from 15.6°C to 19.8°C, with some species showing lower Tzero at Merimbula, the more poleward location. There was general concordance between a species' tolerance to cold-water and its tendency to occur as an overwinter but also notable exceptions. So while this work demonstrates the potential utility of tolerance to seasonal temperature drops as a means to predict range expansion capacity of vagrant species, the exceptional cases serve to highlight alternative factors. Specifically, tolerance to seasonal cooling of water is not the only important factor when predicting the range expansion capacity of a species. Factors affecting the general abundance of the vagrants, such as habitat suitability and competitor/predator environments will also be critical where overwinter survival becomes a lottery.

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http://hdl.handle.net/10453/122587