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The future of the northeast Atlantic benthic flora in a high CO2 world

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Author(s)

Juliet Brodie, Christopher J. Williamson, Dan A. Smale, Nicholas A. Kamenos, Nova Mieszkowska, Rui Santos, Michael Cunliffe, Michael Steinke, Christopher Yesson, Kathryn M. Anderson, Valentina Asnaghi, Colin Brownlee, Heidi L. Burdett, Michael T. Burrows, Sinead Collins, Penelope J. C. Donohue, Ben Harvey, Andrew Foggo, Fanny Noisette, Joana Nunes & 6 others Federica Ragazzola, John A. Raven, Daniela N. Schmidt, David Suggett, Mirta Teichberg, Jason M. Hall-Spencer

Abstract

Seaweed and seagrass communities in the northeast Atlantic have been profoundly impacted by humans, and the rate of change is accelerating rapidly due to runaway CO2 emissions and mounting pressures on coastlines associated with human population growth and increased consumption of finite resources. Here, we predict how rapid warming and acidification are likely to affect benthic flora and coastal ecosystems of the northeast Atlantic in this century, based on global evidence from the literature as interpreted by the collective knowledge of the authorship. We predict that warming will kill off kelp forests in the south and that ocean acidification will remove maerl habitat in the north. Seagrasses will proliferate, and associated epiphytes switch from calcified algae to diatoms and filamentous species. Invasive species will thrive in niches liberated by loss of native species and spread via exponential development of artificial marine structures. Combined impacts of seawater warming, ocean acidification, and increased storminess may replace structurally diverse seaweed canopies, with associated calcified and noncalcified flora, with simple habitats dominated by noncalcified, turf-forming seaweeds.

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Original languageEnglish
Pages (from-to)2787-2798
Number of pages12
JournalEcology and Evolution
Volume4
Issue number13
DOIs
Publication statusPublished - Jul 2014

    Research areas

  • Calcified algae, Climate change, Invasive species, Macroalgae, Microphytobenthos, Seagrasses, Volatile gases, Ocean acidification, Climate-change, Coralline algae, Carbon, Kelp, Growth, Temperature, Ecosystems, Evolution

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