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dc.contributor.author
Fritz, C.
dc.contributor.author
van Dijk, G.
dc.contributor.author
Smolders, A. J. P.
dc.contributor.author
Pancotto, Veronica Andrea
dc.contributor.author
Elzenga, T. J. T. M.
dc.contributor.author
Roelofs, J. G. M.
dc.contributor.author
Grootjans, A. P.
dc.date.available
2020-01-16T19:25:38Z
dc.date.issued
2012-05
dc.identifier.citation
Fritz, C.; van Dijk, G.; Smolders, A. J. P.; Pancotto, Veronica Andrea; Elzenga, T. J. T. M.; et al.; Nutrient additions in pristine Patagonian Sphagnum bog vegetation: Can phosphorus addition alleviate (the effects of) increased nitrogen loads; Wiley Blackwell Publishing, Inc; Plant Biology; 14; 3; 5-2012; 491-499
dc.identifier.issn
1435-8603
dc.identifier.uri
http://hdl.handle.net/11336/94942
dc.description.abstract
Sphagnum-bog ecosystems have a limited capability to retain carbon and nutrients when subjected to increased nitrogen (N) deposition. Although it has been proposed that phosphorus (P) can dilute negative effects of nitrogen by increasing biomass production of Sphagnum mosses, it is still unclear whether P-addition can alleviate physiological N-stress in Sphagnum plants. A 3-year fertilisation experiment was conducted in lawns of a pristine Sphagnum magellanicum bog in Patagonia, where competing vascular plants were practically absent. Background wet deposition of nitrogen was low (∼0.1-0.2g·N·m -2·year -1). Nitrogen (4g·N·m -2·year -1) and phosphorus (1g·P·m -2·year -1) were applied, separately and in combination, six times during the growing season. P-addition substantially increased biomass production of Sphagnum. Nitrogen and phosphorus changed the morphology of Sphagnum mosses by enhancing height increment, but lowering moss stem density. In contrast to expectations, phosphorus failed to alleviate physiological stress imposed by excess nitrogen (e.g. amino acid accumulation, N-saturation and decline in photosynthetic rates). We conclude that despite improving growth conditions by P-addition, Sphagnum-bog ecosystems remain highly susceptible to nitrogen additions. Increased susceptibility to desiccation by nutrients may even worsen the negative effects of excess nitrogen especially in windy climates like in Patagonia.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DROUGHT
dc.subject
GROWTH
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N:P RATIOS
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NITROGEN
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PEAT
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PHOSPHORUS LIMITATION
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PHOTOSYNTHESIS
dc.subject
SPHAGNUM
dc.subject.classification
Ecología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Nutrient additions in pristine Patagonian Sphagnum bog vegetation: Can phosphorus addition alleviate (the effects of) increased nitrogen loads
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-01-15T19:18:34Z
dc.journal.volume
14
dc.journal.number
3
dc.journal.pagination
491-499
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Fritz, C.. Radboud Universiteit Nijmegen; Países Bajos
dc.description.fil
Fil: van Dijk, G.. Radboud Universiteit Nijmegen; Países Bajos
dc.description.fil
Fil: Smolders, A. J. P.. Radboud Universiteit Nijmegen; Países Bajos
dc.description.fil
Fil: Pancotto, Veronica Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Elzenga, T. J. T. M.. University Of Groningen; Países Bajos
dc.description.fil
Fil: Roelofs, J. G. M.. Radboud Universiteit Nijmegen; Países Bajos
dc.description.fil
Fil: Grootjans, A. P.. Radboud Universiteit Nijmegen; Países Bajos
dc.journal.title
Plant Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1438-8677.2011.00527.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1438-8677.2011.00527.x
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