Catchment properties and the photosynthetic trait composition of freshwater plant communities

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  • L. L. Iversen
    Department of Biology, University of Copenhagen, Copenhagen, Denmark.
  • A. Winkel
    Department of Biology, University of Copenhagen, Copenhagen, Denmark.
  • L. Baastrup-Spohr
    Department of Biology, University of Copenhagen, Copenhagen, Denmark.
  • A. B. Hinke
    Department of Biology, University of Copenhagen, Copenhagen, Denmark.
  • J. Alahuhta
    Geography Research Unit, University of Oulu, Oulu, Finland.
  • A. Baattrup-Pedersen
    Department of Bioscience, Aarhus University, Aarhus, Denmark.
  • S. Birk
    Aquatic Ecology, Universität Duisburg-Essen, Duisburg, Germany.
  • P. Brodersen
    Department of Biology, University of Copenhagen, Copenhagen, Denmark.
  • P. A. Chambers
    Environment and Climate Change Canada, Ottawa, ON, Canada.
  • F. Ecke
    Department of Wildlife, Swedish University of Agricultural Sciences, Uppsala, Sweden.
  • T. Feldmann
    Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia.
  • D. Gebler
    Department of Ecology and Environment, Poznán University of Life Sciences, Poznan, Poland.
  • J. Heino
    Finnish Environment Institute, Helsinki, Finland.
  • T. S. Jespersen
    Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
  • S. J. Moe
    Norwegian Institute for Water Research, Oslo, Norway.
  • T. Riis
    Department of Bioscience, Aarhus University, Aarhus, Denmark.
  • L. Sass
    Prairie Research Institute, University of Illinois, Champaign, IL, USA
  • O. Vestergaard
    United Nations Environment Programme, Nairobi, Kenya.
  • S. C. Maberly
    Centre for Ecology & Hydrology, Bailrigg, Lancaster, UK.
  • K. Sand-Jensen
    Department of Biology, University of Copenhagen, Copenhagen, Denmark.
  • O. Pedersen
    Department of Biology, University of Copenhagen, Copenhagen, Denmark.

Description

<jats:title>Change in plants as bicarbonate rises</jats:title> <jats:p> Freshwater plants can be broadly divided into two major categories according to their photosynthetic traits: Some use carbon dioxide as their carbon source, whereas others use bicarbonate. Iversen <jats:italic>et al.</jats:italic> found that the relative concentrations of these two inorganic carbon forms in water determine the functional composition of plant communities across freshwater ecosystems (see the Perspective by Marcé and Obrador). They created global maps revealing that community composition is structured by catchment geology and not climate (in contrast to the terrestrial realm, where the trait composition is structured by temperature and rainfall). Anthropogenic influences from land-use change are causing large-scale increases in bicarbonate concentrations in freshwater catchments and are thus leading to wholesale changes in the composition of their aquatic plant communities. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6467" page="878" related-article-type="in-this-issue" vol="366" xlink:href="10.1126/science.aay5945">878</jats:related-article> ; see also p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6467" page="805" related-article-type="in-this-issue" vol="366" xlink:href="10.1126/science.aaz9096">805</jats:related-article> </jats:p>

Journal

  • Science

    Science 366 (6467), 878-881, 2019-11-15

    American Association for the Advancement of Science (AAAS)

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