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Stream characteristics and their implications for the protection of riparian fens and meadows

2011; Wiley; Volume: 56; Issue: 9 Linguagem: Inglês

10.1111/j.1365-2427.2011.02606.x

1365-2427

Annette Baattrup‐Pedersen, Søren E. Larsen, P. Mejlhede, Joachim Audet, Carl Christian Hoffman, Hans Estrup Andersen, Charlotte Kjærgaard, Brian Kronvang,

Hydrology and Watershed Management Studies

Freshwater BiologyVolume 56, Issue 9 p. 1893-1903 APPLIED ISSUES Stream characteristics and their implications for the protection of riparian fens and meadows ANNETTE BAATTRUP-PEDERSEN, ANNETTE BAATTRUP-PEDERSEN Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorSØREN E. LARSEN, SØREN E. LARSEN Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorPETER MEJLHEDE, PETER MEJLHEDE Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, Denmark Research Centre Foulum, Department of Agroecology and Environment, Aarhus University, Tjele, DenmarkSearch for more papers by this authorJOACHIM AUDET, JOACHIM AUDET Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorCARL CHRISTIAN HOFFMAN, CARL CHRISTIAN HOFFMAN Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorHANS E. ANDERSEN, HANS E. ANDERSEN Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorCHARLOTTE KJAERGAARD, CHARLOTTE KJAERGAARD Research Centre Foulum, Department of Agroecology and Environment, Aarhus University, Tjele, DenmarkSearch for more papers by this authorBRIAN KRONVANG, BRIAN KRONVANG Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this author ANNETTE BAATTRUP-PEDERSEN, ANNETTE BAATTRUP-PEDERSEN Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorSØREN E. LARSEN, SØREN E. LARSEN Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorPETER MEJLHEDE, PETER MEJLHEDE Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, Denmark Research Centre Foulum, Department of Agroecology and Environment, Aarhus University, Tjele, DenmarkSearch for more papers by this authorJOACHIM AUDET, JOACHIM AUDET Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorCARL CHRISTIAN HOFFMAN, CARL CHRISTIAN HOFFMAN Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorHANS E. ANDERSEN, HANS E. ANDERSEN Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this authorCHARLOTTE KJAERGAARD, CHARLOTTE KJAERGAARD Research Centre Foulum, Department of Agroecology and Environment, Aarhus University, Tjele, DenmarkSearch for more papers by this authorBRIAN KRONVANG, BRIAN KRONVANG Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Silkeborg, DenmarkSearch for more papers by this author First published: 20 April 2011 https://doi.org/10.1111/j.1365-2427.2011.02606.xCitations: 7 Annette Baattrup-Pedersen, Department of Freshwater Ecology, National Environmental Research Institute, Aarhus University, Vejlsøvej 25, P. O. Box 314, DK 8600 Silkeborg, Denmark. E-mail: [email protected] Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Summary 1. Running waters, including associated riparian areas, are embraced by international legal frameworks outlining targets for the preservation, protection and improvement of the quality of the environment. Interactions between stream and river processes and riparian habitats have not received much attention in the management of stream ecosystems, and integrated measures that consider both the ecological status of streams and rivers (sensu EU Water Framework Directive, WFD) and the conservation status of riparian habitats and species (sensu EU Habitats Directive, HD) are rare. 2. Here, we analysed the influence of stream size, morphology and chemical water characteristics for the distribution of water-dependent terrestrial habitat types, i.e. alkaline fens, periodically inundated meadows and meadows in riparian areas in Denmark using an extensive data set covering a total of 254 stream reaches. A species-based classification model was used to translate species lists into a standardised interpretation of habitat types protected by the HD in Denmark. 3. No size dependency was found regarding the distribution of fen and meadow vegetation. Instead, the distribution of fen and meadow vegetation was strongly affected by the morphology of the streams. Alkaline fens, periodically inundated meadows and meadows occurred six, five and four times, respectively, less frequently along channelised compared with natural stream reaches. Our results indicate that stream channelisation strongly interfered with the natural hydrology of riparian areas, affecting conditions needed to sustain protected fen and meadow communities. 4. We also found that water chemistry strongly influenced the occurrence of fen and meadow vegetation in riparian areas. The probability of finding fen and meadow vegetation was reduced when total phosphorus (TP) concentration exceeded 40–50 μg P L−1, whereas meadow vegetation responded less strongly to TP. 5. Our findings highlight the importance of restoring hydrology of riparian areas to improve conditions for fen and meadow vegetation, but also that the water chemistry should be considered when measures that increase hydrological connectivity result in an increase in the probability of flooding. Supporting Information Appendix S1. Indicator species for alkaline fens (habitat code 7230 in Annex 1 of HD), periodically inundated meadows (habitat code 6410 in Annex 1 of HD) and meadows (not included in Annex 1 of HD) (Nygaard et al., 2009). As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer-reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. 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