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Lake trophic status...
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Carey, Cayelan C.
(författare)
Lake trophic status can be determined by the depth distribution of sediment phosphorus
- Artikel/kapitelEngelska2011
Förlag, utgivningsår, omfång ...
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2011-10-22
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Wiley,2011
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-169326
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169326URI
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https://doi.org/10.4319/lo.2011.56.6.2051DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:for swepub-publicationtype
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In this meta-analysis, we examine how sediment phosphorus (P) burial pattern may be related to trophic state. We present sediment P profiles from 94 lakes that demonstrate fundamental differences in P burial between oligotrophic and eutrophic systems. In sediments of eutrophic (>= 30 mu g water column total P (TP) L-1) lakes, P concentrations are elevated in the surficial sediments in comparison with deeper layers, representing a large P pool that can be recycled. This pattern directly contrasts with sediment P profiles in oligotrophic lakes (< 10 mu g water column TP L-1), which exhibit increasing concentrations of permanently buried P with depth. Sediment processes regulating P burial may be important regulators of internal P recycling and consequently lake trophic status. Thus, mesotrophic lakes (10 to 30 mu g water column TP L-1), which exhibit consistent P concentrations with depth, are more vulnerable to external P inputs than oligotrophic lakes because they are at their maximal sediment P burial flux. Our data suggest that thresholds in sediment P pattern may correlate with thresholds in sediment P burial processes and consequently may indicate whether deposited P will be released to the water column.
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Rydin, EmilUppsala universitet,Institutionen för ekologi och genetik(Swepub:uu)emilrydi
(författare)
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Uppsala universitetInstitutionen för ekologi och genetik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Limnology and Oceanography: Wiley56:6, s. 2051-20630024-35901939-5590
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