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

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 NunesFederica Ragazzola, John A. Raven, Daniela N. Schmidt, David Suggett, Mirta Teichberg, Jason M. Hall-Spencer

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    107 Citations (Scopus)
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    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.

    Original languageEnglish
    Pages (from-to)2787-2798
    Number of pages12
    JournalEcology and Evolution
    Volume4
    Issue number13
    Early online date18 Jun 2014
    DOIs
    Publication statusPublished - Jul 2014

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