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dc.contributor.author
Schuster Münchberger, Wiebke
dc.contributor.author
Knorr, Klaus Holger
dc.contributor.author
Blodau, Christian
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dc.contributor.author
Gałka, Mariusz
dc.contributor.author
Borken, Werner
dc.contributor.author
Pancotto, Veronica Andrea
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dc.contributor.author
Kleinebecker ,Till
dc.date.available
2021-12-09T14:19:35Z
dc.date.issued
2021-10
dc.identifier.citation
Schuster Münchberger, Wiebke; Knorr, Klaus Holger; Blodau, Christian; Gałka, Mariusz; Borken, Werner; et al.; Control of carbon and nitrogen accumulation by vegetation in pristine bogs of southern Patagonia; Elsevier Science; Science of the Total Environment; 10-2021; 1-14
dc.identifier.issn
0048-9697
dc.identifier.uri
http://hdl.handle.net/11336/148484
dc.description.abstract
Peatlands are long-term sinks of carbon (C) and nitrogen (N) that are exposed to anthropogenic pressure. This has often induced a vegetation shift from peat mosses towards increasing presence of vascular plants. However, the impact of this vegetation shift on the sink function of peatlands remains unclear. To address this research gap, we studied C and N accumulation in a Patagonian cushion bog where a shift to the predominance of vascular cushion plants is a natural phenomenon since millennia. For comparison, long-term accumulation and decomposition patterns in a pristine Patagonian Sphagnum bog were studied. Thereto, we determined recent and long-term rates of C and N accumulation, their within-site variability, and studied plant-macrofossils. These results were related to decomposition indicators (C/N ratio, humification index, stable isotopes) of the bog types. Despite differences in decomposition indicators, long-term rates of C accumulation were of similar magnitude in the Sphagnum (21.9 g C m−2 yr−1) and in the cushion bog (22.2 g C m−2 yr−1). N accumulation was significantly lower in the Sphagnum bog (0.35 g N m−2 yr−1) compared to the surprisingly high accumulation in the cushion bog (0.55 g N m−2 yr−1). Tephra depositions in the cushion bog about 1600 cal. Years ago presumably triggered the vegetation shift towards dominance of cushion plants by a fertilization effect. C accumulation rates during past decades in the upper decimeters of peat were four times higher in the cushion bog (245 g C m−2 yr−1) compared to the Sphagnum bog (64 g C m−2 yr−1), but substantially decreased since the appearance of cushion plants. High decomposition rates as indicated by decomposition indicators thus apparently offset the higher productivity of cushion plants in the long term. While cushion bogs appear to be effective N sinks, their C sink function may therefore be equal to Sphagnum bogs.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CARBON SEQUESTRATION
dc.subject
DECOMPOSITION
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PALEOECOLOGY
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PEATLAND
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RHIZOSPHERE
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TIERRA DEL FUEGO
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Control of carbon and nitrogen accumulation by vegetation in pristine bogs of southern Patagonia
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-12-03T18:00:35Z
dc.journal.pagination
1-14
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Schuster Münchberger, Wiebke. Westfälische Wilhelms Universität; Alemania
dc.description.fil
Fil: Knorr, Klaus Holger. Westfälische Wilhelms Universität; Alemania
dc.description.fil
Fil: Blodau, Christian. Westfälische Wilhelms Universität; Alemania
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Fil: Gałka, Mariusz. University Of Lodz; Argentina
dc.description.fil
Fil: Borken, Werner. University of Bayreuth; Alemania
dc.description.fil
Fil: Pancotto, Veronica Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina
dc.description.fil
Fil: Kleinebecker ,Till. Westfälische Wilhelms Universität; Alemania
dc.journal.title
Science of the Total Environment
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.scitotenv.2021.151293
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0048969721063713?via%3Dihub
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