University Of Tasmania

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Ocean acidification as a multiple driver: how interactions between changing seawater carbonate parameters affect marine life

journal contribution
posted on 2023-05-22, 23:57 authored by Catriona HurdCatriona Hurd, Beardall, J, Comeau, S, Cornwall, CE, Havenhand, JN, Munday, PL, Parker, LM, Raven, JA, McGraw, CM

‘Multiple drivers’ (also termed ‘multiple stressors’) is the term used to describe the cumulative effects of multiple environmental factors on organisms or ecosystems. Here, we consider ocean acidification as a multiple driver because many inorganic carbon parameters are changing simultaneously, including total dissolved inorganic carbon, CO2, HCO3, CO32–, H+ and CaCO3 saturation state. With the rapid expansion of ocean acidification research has come a greater understanding of the complexity and intricacies of how these simultaneous changes to the seawater carbonate system are affecting marine life. We start by clarifying key terms used by chemists and biologists to describe the changing seawater inorganic carbon system. Then, using key groups of non-calcifying (fish, seaweeds, diatoms) and calcifying (coralline algae, coccolithophores, corals, molluscs) organisms, we consider how various physiological processes are affected by different components of the carbonate system.


Publication title

Marine and Freshwater Research








Institute for Marine and Antarctic Studies


C S I R O Publishing

Place of publication

150 Oxford St, Po Box 1139, Collingwood, Australia, Victoria, 3066

Repository Status

  • Restricted

Socio-economic Objectives

Ecosystem adaptation to climate change