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- W2091330671 abstract "A number of proxies, including carbon to nitrogen ratio (C:N) and stable isotopes (delta(13)C and delta(15)N), have been used to reconstruct organic matter (OM) profiles from lake sediments and these proxies individually or in combination cannot clearly discriminate different sources. Here we present an alternative approach to elucidate this problem from lake sediments as a function of watershed scale land use changes. Stable isotope signatures of defined OM sources from the study watersheds, Shawnigan Lake (SHL) and Elk Lake (ELL), were compared with sedimentary proxy records. Results from this study reveal that terrestrial inputs and catchment soil coinciding with the watershed disturbances histories probably contributed in recent trophic enrichment in SHL. In contrast, cultural eutrophication in ELL was partially a result of input from catchment soil (agricultural activities) with significant input from lake primary production as well. Results were consistent in both IsoSource (IsoSource version 1.2 is a Visual Basic program used for source separation, (http://www.epa.gov/wed/pages/models/isosource/isosource.htm) and discriminant analysis (statistical classification technique)." @default.
- W2091330671 created "2016-06-24" @default.
- W2091330671 creator A5025505245 @default.
- W2091330671 creator A5052383329 @default.
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- W2091330671 date "2008-09-01" @default.
- W2091330671 modified "2023-10-18" @default.
- W2091330671 title "An alternative approach to reconstructing organic matter accumulation with contrasting watershed disturbance histories from lake sediments" @default.
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- W2091330671 doi "https://doi.org/10.1016/j.envpol.2007.10.031" @default.
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