Acclimatization to high-variance habitats does not enhance physiological tolerance of two key Caribbean corals to future temperature and pH

Camp, EF; Smith, DJ; Evenhuis, C; Enochs, I; Manzello, D; Woodcock, S; Suggett, DJ

Acclimatization to high-variance habitats does not enhance physiological tolerance of two key Caribbean corals to future temperature and pH

Camp, EF

Smith, DJ Evenhuis, C

Enochs, I Manzello, D Woodcock, S

Suggett, DJ

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Publication Type:: Journal Article
Citation:: Proceedings of the Royal Society B: Biological Sciences, 2016, 283 (1831)
Issue Date:: 2016-05-25

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Field	Value	Language
dc.contributor.author	Camp, EF https://orcid.org/0000-0003-1962-1336	en_US
dc.contributor.author	Smith, DJ	en_US
dc.contributor.author	Evenhuis, C https://orcid.org/0000-0001-9903-7716	en_US
dc.contributor.author	Enochs, I	en_US
dc.contributor.author	Manzello, D	en_US
dc.contributor.author	Woodcock, S https://orcid.org/0000-0003-4903-3164	en_US
dc.contributor.author	Suggett, DJ https://orcid.org/0000-0001-5326-2520	en_US
dc.date.available	2016-04-22	en_US
dc.date.issued	2016-05-25	en_US
dc.identifier.citation	Proceedings of the Royal Society B: Biological Sciences, 2016, 283 (1831)	en_US
dc.identifier.issn	0962-8452	en_US
dc.identifier.uri	http://hdl.handle.net/10453/43934
dc.description.abstract	© 2016 The Author(s) Published by the Royal Society. All rights reserved. Corals are acclimatized to populate dynamic habitats that neighbour coral reefs. Habitats such as seagrass beds exhibit broad diel changes in temperature and pH that routinely expose corals to conditions predicted for reefs over the next 50-100 years. However, whether such acclimatization effectively enhances physiological tolerance to, and hence provides refuge against, future climate scenarios remains unknown. Also, whether corals living in low-variance habitats can tolerate present-day high-variance conditions remains untested. We experimentally examined how pH and temperature predicted for the year 2100 affects the growth and physiology of two dominant Caribbean corals (Acropora palmata and Porites astreoides) native to habitats with intrinsically low (outer-reef terrace, LV) and/or high (neighbouring seagrass, HV) environmental variance. Under present-day temperature and pH, growth and metabolic rates (calcification, respiration and photosynthesis) were unchanged for HV versus LV populations. Superimposing future climate scenarios onto the HV and LV conditions did not result in any enhanced tolerance to colonies native to HV. Calcification rates were always lower for elevated temperature and/or reduced pH. Together, these results suggest that seagrass habitats may not serve as refugia against climate change if the magnitude of future temperature and pH changes is equivalent to neighbouring reef habitats.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT130100202
dc.relation.ispartof	Proceedings of the Royal Society B: Biological Sciences	en_US
dc.relation.isbasedon	10.1098/rspb.2016.0442	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Anthozoa	en_US
dc.subject.mesh	Ecosystem	en_US
dc.subject.mesh	Temperature	en_US
dc.subject.mesh	Acclimatization	en_US
dc.subject.mesh	Species Specificity	en_US
dc.subject.mesh	Hydrogen-Ion Concentration	en_US
dc.subject.mesh	Caribbean Region	en_US
dc.subject.mesh	West Indies	en_US
dc.title	Acclimatization to high-variance habitats does not enhance physiological tolerance of two key Caribbean corals to future temperature and pH	en_US
dc.type	Journal Article
utslib.citation.volume	1831	en_US
utslib.citation.volume	283	en_US
utslib.for	0602 Ecology	en_US
utslib.for	06 Biological Sciences	en_US
utslib.for	07 Agricultural and Veterinary Sciences	en_US
utslib.for	11 Medical and Health Sciences	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 Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
pubs.organisational-group	/University of Technology Sydney/Strength - ithree - Institute of Infection, Immunity and Innovation
utslib.copyright.status	closed_access
pubs.issue	1831	en_US
pubs.publication-status	Published	en_US
pubs.volume	283	en_US

Abstract:

© 2016 The Author(s) Published by the Royal Society. All rights reserved. Corals are acclimatized to populate dynamic habitats that neighbour coral reefs. Habitats such as seagrass beds exhibit broad diel changes in temperature and pH that routinely expose corals to conditions predicted for reefs over the next 50-100 years. However, whether such acclimatization effectively enhances physiological tolerance to, and hence provides refuge against, future climate scenarios remains unknown. Also, whether corals living in low-variance habitats can tolerate present-day high-variance conditions remains untested. We experimentally examined how pH and temperature predicted for the year 2100 affects the growth and physiology of two dominant Caribbean corals (Acropora palmata and Porites astreoides) native to habitats with intrinsically low (outer-reef terrace, LV) and/or high (neighbouring seagrass, HV) environmental variance. Under present-day temperature and pH, growth and metabolic rates (calcification, respiration and photosynthesis) were unchanged for HV versus LV populations. Superimposing future climate scenarios onto the HV and LV conditions did not result in any enhanced tolerance to colonies native to HV. Calcification rates were always lower for elevated temperature and/or reduced pH. Together, these results suggest that seagrass habitats may not serve as refugia against climate change if the magnitude of future temperature and pH changes is equivalent to neighbouring reef habitats.

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http://hdl.handle.net/10453/43934