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  • Limpens, J. (author)

Climatic modifiers of the response to nitrogen deposition in peat-forming Sphagnum mosses : a meta-analysis

  • Article/chapterEnglish2011

Publisher, publication year, extent ...

  • 2011-03-22
  • Wiley,2011
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-156226
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-156226URI
  • https://doi.org/10.1111/j.1469-8137.2011.03680.xDOI
  • https://res.slu.se/id/publ/40259URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Peatlands in the northern hemisphere have accumulated more atmospheric carbon (C) during the Holocene than any other terrestrial ecosystem, making peatlands long-term C sinks of global importance. Projected increases in nitrogen (N) deposition and temperature make future accumulation rates uncertain. Here, we assessed the impact of N deposition on peatland C sequestration potential by investigating the effects of experimental N addition on Sphagnum moss. We employed meta-regressions to the results of 107 field experiments, accounting for sampling dependence in the data. We found that high N loading (comprising N application rate, experiment duration, background N deposition) depressed Sphagnum production relative to untreated controls. The interactive effects of presence of competitive vascular plants and high tissue N concentrations indicated intensified biotic interactions and altered nutrient stochiometry as mechanisms underlying the detrimental N effects. Importantly, a higher summer temperature (mean for July) and increased annual precipitation intensified the negative effects of N. The temperature effect was comparable to an experimental application of almost 4 g N m(-2) yr(-1) for each 1 degrees C increase. Our results indicate that current rates of N deposition in a warmer environment will strongly inhibit C sequestration by Sphagnum-dominated vegetation.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Granath, GustafSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Uppsala universitet,Växtekologi och evolution,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment(Swepub:slu)93460 (author)
  • Gunnarsson, UrbanUppsala universitet,Växtekologi och evolution (author)
  • Aerts, R. (author)
  • Bayley, S. (author)
  • Bragazza, L. (author)
  • Bubier, J. (author)
  • Buttler, A. (author)
  • van den Berg, L. J. L. (author)
  • Francez, A-J (author)
  • Gerdol, R. (author)
  • Grosvernier, P. (author)
  • Heijmans, M. M. P. D. (author)
  • Hoosbeek, M. R. (author)
  • Hotes, S. (author)
  • Ilomets, M. (author)
  • Leith, I. (author)
  • Mitchell, E. A. D. (author)
  • Moore, T. (author)
  • Nilsson, MatsSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management(Swepub:slu)47620 (author)
  • Nordbakken, J-F (author)
  • Rochefort, L. (author)
  • Rydin, HåkanUppsala universitet,Växtekologi och evolution(Swepub:uu)hakarydi (author)
  • Sheppard, L. J. (author)
  • Thormann, M. (author)
  • Wiedermann, M. M. (author)
  • Williams, B. L. (author)
  • Xu, B. (author)
  • Uppsala universitetVäxtekologi och evolution (creator_code:org_t)
  • Sveriges lantbruksuniversitet

Related titles

  • In:New Phytologist: Wiley191:2, s. 496-5070028-646X1469-8137

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