The availability of the micronutrient iron governs phytoplankton growth across much of the ocean, but the global iron cycle is changing rapidly due to accelerating acidification, stratification, warming and deoxygenation. These mechanisms of global change will cumulatively affect the aqueous chemistry, sources and sinks, recycling, particle dynamics and bioavailability of iron. Biological iron demand will vary as acclimation to environmental change modifies cellular requirements for photosynthesis and nitrogen acquisition and as adaptive evolution or community shifts occur. Warming, acidification and nutrient co-limitation interactions with iron biogeochemistry will all strongly influence phytoplankton dynamics. Predicting the shape of the future iron cycle will require understanding the responses of each component of the unique biogeochemistry of this trace element to many concurrent and interacting environmental changes.

Item Type:	Refereed Article
Keywords:	iron supply, phytoplankton, ocean global change, biogeochemistry, climate-change ecology, marine biology, marine chemistry
Research Division:	Environmental Sciences
Research Group:	Climate change impacts and adaptation
Research Field:	Ecological impacts of climate change and ecological adaptation
Objective Division:	Environmental Policy, Climate Change and Natural Hazards
Objective Group:	Adaptation to climate change
Objective Field:	Ecosystem adaptation to climate change
UTAS Author:	Boyd, PW (Professor Philip Boyd)
ID Code:	114112
Year Published:	2016
Funding Support:	Australian Research Council (FL160100131)
Web of Science® Times Cited:	95
Deposited By:	Ecology and Biodiversity
Deposited On:	2017-02-07
Last Modified:	2018-04-19
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