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000057140 0247_ $$2DOI$$a10.1016/j.scitotenv.2006.05.020
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000057140 084__ $$2WoS$$aEnvironmental Sciences
000057140 1001_ $$0P:(DE-HGF)0$$aEnters, D.$$b0
000057140 245__ $$aEffects of land-use change on deposition and composition of organic matter in Frickenhauser See, northern Bavaria, Germany
000057140 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2006
000057140 300__ $$a
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000057140 440_0 $$05445$$aScience of the Total Environment$$v369$$x0048-9697$$y1
000057140 500__ $$aRecord converted from VDB: 12.11.2012
000057140 520__ $$aCharacterization of bulk organic matter (OM) from lacustrine sediments of Frickenhauser See (northern Bavaria, Germany) reveals considerable variation during the last two millennia. Atomic C/N ratios and total organic carbon (TOC) content are positively correlated with arboreal pollen percentages which are used as an indicator of land-use intensity. Despite possible alterations of OM during early diagenesis, differences between three major lithological units are large enough to be interpreted as human impact on the sedimentation of OM in the lake. Sediments deposited prior to deforestation in the catchment area (unit C) are characterized by mean C/N ratios of 14.5, indicating a mixed composition of organic matter derived from lacustrine and terrestrial sources (forest litter). During a period of intensive soil erosion (ca. 1000 AD until 1870 AD; unit B), low C/N ratios of around 7.7 suggest that the relative proportion of forest litter decreased in favour of the lacustrine component and soil OM. Terrestrial plant detritus is only transported into the lake through numerous turbidite events. Deforestation and agriculture also coincide with a decreasing TOC content from an average value of 10.7% to 1.5%. This decrease is explained through a dilution effect due to the high input of minerogenic matter. Stable carbon isotopes indicate eutrophication of the lake due to the mobilization of nutrients through soil erosion. Starting around 1870 AD, organic-rich sapropelic sediments are deposited (unit A). A decline of turbidite events and increased wind shelter from trees due to reduced land-use intensity led to meromictic conditions. Consequently, negative excursions in the delta13C isotope record at the onset of unit A probably reflect methanogenesis under permanently anoxic conditions.
000057140 536__ $$0G:(DE-Juel1)FUEK405$$2G:(DE-HGF)$$aGeosysteme - Erde im Wandel$$cP21$$x0
000057140 588__ $$aDataset connected to Web of Science, Pubmed
000057140 650_2 $$2MeSH$$aCarbon: analysis
000057140 650_2 $$2MeSH$$aConservation of Natural Resources
000057140 650_2 $$2MeSH$$aEnvironmental Monitoring
000057140 650_2 $$2MeSH$$aFresh Water: analysis
000057140 650_2 $$2MeSH$$aGeologic Sediments
000057140 650_2 $$2MeSH$$aGermany
000057140 650_2 $$2MeSH$$aNitrogen: analysis
000057140 650_2 $$2MeSH$$aPollen
000057140 650_2 $$2MeSH$$aSulfur: analysis
000057140 650_2 $$2MeSH$$aTrees
000057140 650_7 $$07440-44-0$$2NLM Chemicals$$aCarbon
000057140 650_7 $$07704-34-9$$2NLM Chemicals$$aSulfur
000057140 650_7 $$07727-37-9$$2NLM Chemicals$$aNitrogen
000057140 650_7 $$2WoSType$$aJ
000057140 65320 $$2Author$$alake sediments
000057140 65320 $$2Author$$asoil erosion
000057140 65320 $$2Author$$ahuman impact
000057140 65320 $$2Author$$aC/N ratios
000057140 65320 $$2Author$$aorganic carbon
000057140 65320 $$2Author$$aLate Holocene
000057140 7001_ $$0P:(DE-Juel1)129567$$aLücke, A.$$b1$$uFZJ
000057140 7001_ $$0P:(DE-HGF)0$$aZolitschka, B.$$b2
000057140 773__ $$0PERI:(DE-600)1498726-0$$a10.1016/j.scitotenv.2006.05.020$$gVol. 369$$q369$$tThe @science of the total environment$$v369$$x0048-9697$$y2006
000057140 8567_ $$uhttp://dx.doi.org/10.1016/j.scitotenv.2006.05.020
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000057140 9141_ $$aNachtrag$$y2006
000057140 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
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