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Biogeochemistry of ...
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Rhoades, Charles C.
(författare)
Biogeochemistry of beetle-killed forests : Explaining a weak nitrate response
- Artikel/kapitelEngelska2013
Förlag, utgivningsår, omfång ...
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2013-01-14
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Proceedings of the National Academy of Sciences,2013
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-196557
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-196557URI
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https://doi.org/10.1073/pnas.1221029110DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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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.
Ämnesord och genrebeteckningar
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nitrogen biogeochemistry
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streamwater chemistry
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nitrate loss
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watershed disturbance
Biuppslag (personer, institutioner, konferenser, titlar ...)
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McCutchan, James H., Jr.
(författare)
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Cooper, Leigh A.
(författare)
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Clow, David
(författare)
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Detmer, Thomas M.
(författare)
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Briggs, Jennifer S.
(författare)
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Stednick, John D.
(författare)
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Veblen, Thomas T.
(författare)
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Ertz, Rachel M.
(författare)
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Likens, Gene E.Uppsala universitet,Limnologi(Swepub:uu)genli279
(författare)
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Lewis, William M., Jr.
(författare)
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Uppsala universitetLimnologi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i: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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Rhoades, Charles ...
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McCutchan, James ...
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Cooper, Leigh A.
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Clow, David
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Detmer, Thomas M ...
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Briggs, Jennifer ...
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Stednick, John D ...
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Veblen, Thomas T ...
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Ertz, Rachel M.
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Likens, Gene E.
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Lewis, William M ...
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Uppsala universitet