Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion

Warming waters and changing ocean currents are increasing the supply of tropical fish larvae to temperature regions where they are exposed to novel habitats, namely temperate macroalgae and barren reefs. Here, we use underwater surveys on the temperate reefs of southeastern (SE) Australia and wester...

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Main Authors:	Beck, H.J., Feary, David A., Nakamura, Y., Booth, David J.
Format:	Article
Language:	English
Published:	Springer Verlag 2017
Online Access:	http://eprints.nottingham.ac.uk/40651/ http://eprints.nottingham.ac.uk/40651/ http://eprints.nottingham.ac.uk/40651/ http://eprints.nottingham.ac.uk/40651/1/Beck%20et%20al%20In%20press.pdf

id	nottingham-40651
recordtype	eprints
spelling	nottingham-406512018-02-10T03:26:17Z http://eprints.nottingham.ac.uk/40651/ Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion Beck, H.J. Feary, David A. Nakamura, Y. Booth, David J. Warming waters and changing ocean currents are increasing the supply of tropical fish larvae to temperature regions where they are exposed to novel habitats, namely temperate macroalgae and barren reefs. Here, we use underwater surveys on the temperate reefs of southeastern (SE) Australia and western Japan (~33.5°N and S, respectively) to investigate how temperate macroalgal and non-macroalgal habitats influence recruitment success of a range of tropical fishes. We show that temperate macroalgae strongly affected recruitment of many tropical fish species in both regions and across three recruitment seasons in SE Australia. Densities and richness of recruiting tropical fishes, primarily planktivores and herbivores, were over seven times greater in non macroalgal than macroalgal reef habitat. Species and trophic diversity (K-dominance) were also greater in non macroalgal habitat. Temperate macroalgal cover was a stronger predictor of tropical fish assemblages than temperate fish assemblages, reef rugosities or wave exposure. Tropical fish richness, diversity and density were greater on barren reef than on reef dominated by turfing algae. One common species, the neon damselfish (Pomacentrus coelestis), chose nonmacroalgal habitat over temperate macroalgae for settlement in an aquarium experiment. This study highlights that temperate macroalgae may partly account for spatial variation in recruitment success of many tropical fishes into higher latitudes. Hence, habitat composition of temperate reefs may need to be considered to accurately predict the geographic responses of many tropical fishes to climate change. Springer Verlag 2017-02-09 Article PeerReviewed application/pdf en http://eprints.nottingham.ac.uk/40651/1/Beck%20et%20al%20In%20press.pdf Beck, H.J. and Feary, David A. and Nakamura, Y. and Booth, David J. (2017) Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion. Coral Reefs, 36 (2). pp. 639-651. ISSN 1432-0975 http://link.springer.com/article/10.1007%2Fs00338-017-1553-1 doi:10.1007/s00338-017-1553-1 doi:10.1007/s00338-017-1553-1
repository_type	Digital Repository
institution_category	Local University
institution	University of Nottingham Malaysia Campus
building	Nottingham Research Data Repository
collection	Online Access
language	English
description	Warming waters and changing ocean currents are increasing the supply of tropical fish larvae to temperature regions where they are exposed to novel habitats, namely temperate macroalgae and barren reefs. Here, we use underwater surveys on the temperate reefs of southeastern (SE) Australia and western Japan (~33.5°N and S, respectively) to investigate how temperate macroalgal and non-macroalgal habitats influence recruitment success of a range of tropical fishes. We show that temperate macroalgae strongly affected recruitment of many tropical fish species in both regions and across three recruitment seasons in SE Australia. Densities and richness of recruiting tropical fishes, primarily planktivores and herbivores, were over seven times greater in non macroalgal than macroalgal reef habitat. Species and trophic diversity (K-dominance) were also greater in non macroalgal habitat. Temperate macroalgal cover was a stronger predictor of tropical fish assemblages than temperate fish assemblages, reef rugosities or wave exposure. Tropical fish richness, diversity and density were greater on barren reef than on reef dominated by turfing algae. One common species, the neon damselfish (Pomacentrus coelestis), chose nonmacroalgal habitat over temperate macroalgae for settlement in an aquarium experiment. This study highlights that temperate macroalgae may partly account for spatial variation in recruitment success of many tropical fishes into higher latitudes. Hence, habitat composition of temperate reefs may need to be considered to accurately predict the geographic responses of many tropical fishes to climate change.
format	Article
author	Beck, H.J. Feary, David A. Nakamura, Y. Booth, David J.
spellingShingle	Beck, H.J. Feary, David A. Nakamura, Y. Booth, David J. Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion
author_facet	Beck, H.J. Feary, David A. Nakamura, Y. Booth, David J.
author_sort	Beck, H.J.
title	Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion
title_short	Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion
title_full	Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion
title_fullStr	Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion
title_full_unstemmed	Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion
title_sort	temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion
publisher	Springer Verlag
publishDate	2017
url	http://eprints.nottingham.ac.uk/40651/ http://eprints.nottingham.ac.uk/40651/ http://eprints.nottingham.ac.uk/40651/ http://eprints.nottingham.ac.uk/40651/1/Beck%20et%20al%20In%20press.pdf
first_indexed	2018-09-06T13:07:52Z
last_indexed	2018-09-06T13:07:52Z
_version_	1610863631592849408

Temperate macroalgae impacts tropical fish recruitment at forefronts of range expansion

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