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  • Rhoades, Charles C. (author)

Biogeochemistry of beetle-killed forests : Explaining a weak nitrate response

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • 2013-01-14
  • Proceedings of the National Academy of Sciences,2013
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-196557
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-196557URI
  • https://doi.org/10.1073/pnas.1221029110DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

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

Notes

  • A current pine beetle infestation has caused extensive mortality of. lodgepole pine (Pinus contorta) in forests of Colorado and Wyoming; it is part of an unprecedented multispecies beetle outbreak extending from Mexico to Canada. In United States and European watersheds, where atmospheric deposition of inorganic N is moderate to low (<10 kg.ha.y), disturbance of forests by timber harvest or violent storms causes an increase in stream nitrate concentration that typically is close to 400% of predisturbance concentrations. In contrast, no significant increase in streamwater nitrate concentrations has occurred following extensive tree mortality caused by the mountain pine beetle in Colorado. A model of nitrate release from Colorado watersheds calibrated with field data indicates that stimulation of nitrate uptake by vegetation components unaffected by beetles accounts for significant nitrate retention in beetle-infested watersheds. The combination of low atmospheric N deposition (<10 kg.ha.y), tree mortality spread over multiple years, and high compensatory capacity associated with undisturbed residual vegetation and soils explains the ability of these beetle-infested watersheds to retain nitrate despite catastrophic mortality of the dominant canopy tree species.

Subject headings and genre

  • nitrogen biogeochemistry
  • streamwater chemistry
  • nitrate loss
  • watershed disturbance

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

  • McCutchan, James H., Jr. (author)
  • Cooper, Leigh A. (author)
  • Clow, David (author)
  • Detmer, Thomas M. (author)
  • Briggs, Jennifer S. (author)
  • Stednick, John D. (author)
  • Veblen, Thomas T. (author)
  • Ertz, Rachel M. (author)
  • Likens, Gene E.Uppsala universitet,Limnologi(Swepub:uu)genli279 (author)
  • Lewis, William M., Jr. (author)
  • Uppsala universitetLimnologi (creator_code:org_t)

Related titles

  • In:Proceedings of the National Academy of Sciences of the United States of America: Proceedings of the National Academy of Sciences110:5, s. 1756-17600027-84241091-6490

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