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Inorganic carbon physiology underpins macroalgal responses to elevated CO2
Citation
Cornwall, CE and Revill, AT and Hall-Spencer, JM and Milazzo, M and Raven, JA and Hurd, CL, Inorganic carbon physiology underpins macroalgal responses to elevated CO2, Scientific Reports, 7 Article 46297. ISSN 2045-2322 (2017) [Refereed Article]
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Copyright Statement
Copyright 2017 The authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
Abstract
Beneficial effects of CO2 on photosynthetic organisms will be a key driver of ecosystem change under
ocean acidification. Predicting the responses of macroalgal species to ocean acidification is complex,
but we demonstrate that the response of assemblages to elevated CO2 are correlated with inorganic
carbon physiology. We assessed abundance patterns and a proxy for CO2:HCO3− use (δ13C values) of
macroalgae along a gradient of CO2 at a volcanic seep, and examined how shifts in species abundance
at other Mediterranean seeps are related to macroalgal inorganic carbon physiology. Five macroalgal
species capable of using both HCO3− and CO2 had greater CO2 use as concentrations increased. These
species (and one unable to use HCO3−) increased in abundance with elevated CO2 whereas obligate
calcifying species, and non-calcareous macroalgae whose CO2 use did not increase consistently with
concentration, declined in abundance. Physiological groupings provide a mechanistic understanding
that will aid us in determining which species will benefit from ocean acidification and why.
Item Details
Item Type: | Refereed Article |
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Keywords: | Seaweed, climate change, ocean acidification, carbon physiology |
Research Division: | Biological Sciences |
Research Group: | Plant biology |
Research Field: | Phycology (incl. marine grasses) |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Adaptation to climate change |
Objective Field: | Ecosystem adaptation to climate change |
UTAS Author: | Cornwall, CE (Dr Chris Cornwall) |
UTAS Author: | Hurd, CL (Professor Catriona Hurd) |
ID Code: | 116083 |
Year Published: | 2017 |
Web of Science® Times Cited: | 87 |
Deposited By: | Ecology and Biodiversity |
Deposited On: | 2017-05-01 |
Last Modified: | 2018-04-24 |
Downloads: | 144 View Download Statistics |
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