Wave-sheltered embayments are recruitment hotspots for tropical fishes on temperate reefs

Beck, HJ; Feary, DA; Nakamura, Y; Booth, DJ

Wave-sheltered embayments are recruitment hotspots for tropical fishes on temperate reefs

Beck, HJ Feary, DA Nakamura, Y Booth, DJ

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Publication Type:: Journal Article
Citation:: Marine Ecology Progress Series, 2016, 546 pp. 197 - 212
Issue Date:: 2016-03-21

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Field	Value	Language
dc.contributor.author	Beck, HJ	en_US
dc.contributor.author	Feary, DA	en_US
dc.contributor.author	Nakamura, Y	en_US
dc.contributor.author	Booth, DJ https://orcid.org/0000-0002-8256-1412	en_US
dc.date.available	2020-05-25T19:01:54Z
dc.date.issued	2016-03-21	en_US
dc.identifier.citation	Marine Ecology Progress Series, 2016, 546 pp. 197 - 212	en_US
dc.identifier.issn	0171-8630	en_US
dc.identifier.uri	http://hdl.handle.net/10453/43982
dc.description.abstract	© Inter-Research 2016. Poleward redistribution of species, facilitated by global warming, will be compromised if habitats at higher latitudes do not support the species' early life stages. For tropical reef fishes, reef structure may mediate colonisation of temperate regions; however, an understanding of key habitat requirements for colonisation is currently lacking. We show that density, diversity (taxonomic and trophic) and species richness of newly recruited tropical reef fishes were greater in embayed than exposed reefs in 2 mid-latitude temperate zones, where coastal waters are rapidly warming: southeastern Australia (30.5-33° S) and western Japan (32-33.5° N). Dietary generalists (e.g. planktivores and herbivores) and specialists (corallivores) associated more commonly with embayed reefs. Wave exposure was a stronger predictor of the density and richness of dietary generalists than water temperature, latitude, predatory fish densities, reef rugosities, benthos and distance to river mouths. Corallivores were strongly associated with branching corals, which were exclusive to highly sheltered reefs. We also explored habitat associations of 7 focal species within a coral reef, One Tree Island (OTI), Great Barrier Reef. Four species associated with wave - sheltered over exposed reef on OTI and temperate Australian reef. However, Abudefduf vaigiensis, Pomacentrus coelestis and Acanthurus triostegus associated more with wave-sheltered reef in temperate regions. We hypothesise that cool temperate waters promote greater sheltering of some warm-adapted, tropical fishes by impacting their swimming/physiological performance. Results suggest availability of embayed temperate reefs may influence where some tropical fishes colonise with warming waters, through impacting recruitment. Wave exposure of reefs should be considered when predicting geographic responses of tropical fishes to climate change.	en_US
dc.relation.ispartof	Marine Ecology Progress Series	en_US
dc.relation.isbasedon	10.3354/meps11599	en_US
dc.subject.classification	Marine Biology & Hydrobiology	en_US
dc.title	Wave-sheltered embayments are recruitment hotspots for tropical fishes on temperate reefs	en_US
dc.type	Journal Article
utslib.citation.volume	546	en_US
utslib.for	0602 Ecology	en_US
utslib.for	0608 Zoology	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.publication-status	Published	en_US
pubs.volume	546	en_US

Abstract:

© Inter-Research 2016. Poleward redistribution of species, facilitated by global warming, will be compromised if habitats at higher latitudes do not support the species' early life stages. For tropical reef fishes, reef structure may mediate colonisation of temperate regions; however, an understanding of key habitat requirements for colonisation is currently lacking. We show that density, diversity (taxonomic and trophic) and species richness of newly recruited tropical reef fishes were greater in embayed than exposed reefs in 2 mid-latitude temperate zones, where coastal waters are rapidly warming: southeastern Australia (30.5-33° S) and western Japan (32-33.5° N). Dietary generalists (e.g. planktivores and herbivores) and specialists (corallivores) associated more commonly with embayed reefs. Wave exposure was a stronger predictor of the density and richness of dietary generalists than water temperature, latitude, predatory fish densities, reef rugosities, benthos and distance to river mouths. Corallivores were strongly associated with branching corals, which were exclusive to highly sheltered reefs. We also explored habitat associations of 7 focal species within a coral reef, One Tree Island (OTI), Great Barrier Reef. Four species associated with wave - sheltered over exposed reef on OTI and temperate Australian reef. However, Abudefduf vaigiensis, Pomacentrus coelestis and Acanthurus triostegus associated more with wave-sheltered reef in temperate regions. We hypothesise that cool temperate waters promote greater sheltering of some warm-adapted, tropical fishes by impacting their swimming/physiological performance. Results suggest availability of embayed temperate reefs may influence where some tropical fishes colonise with warming waters, through impacting recruitment. Wave exposure of reefs should be considered when predicting geographic responses of tropical fishes to climate change.

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http://hdl.handle.net/10453/43982