Title: Der Einfluss von erhöhtem Ozon- und Stickstoffeintrag in eine artenreiche subalpine Weide
Authors : Bassin, Seraina
Volk, Matthias
Suter, Matthias
De Baan, Laura
Riesen, Matthias
Buchmann, Nina
Fuhrer, Jürg
Published in : Jahresbericht der Naturforschenden Gesellschaft Graubünden
Volume(Issue) : 114
Pages : 113
Pages to: 116
Publisher / Ed. Institution : Naturforschende Gesellschaft Graubünden
Issue Date: 2007
License (according to publishing contract) : Licence according to publishing contract
Language : German
Subject (DDC) : 577: Ecology
Abstract: 180 monoliths of a Geo-Montani-Nardetum pasture were exposed to combined elevated nitrogen (N) and ozone (O3) concentrations using a free fumigation system. In an additional experiment, the influence of a potential co-limitation by phosphorus on the effect of nitrogen was studied. After three years, elevated O3-exposure had no effect on productivity and species composition of the vegetation, but led to accelerated leaf senescence. In contrast, increased N-deposition resulted in higher biomass production and increased canopy greenness. However, the N-induced increase in productivity was limited by the availability of soil phosphorus. Of the plant functional groups (grasses, sedges, forbs, and legumes), sedges benefited over-proportionally from the additional N-deposition.
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Publication type: Contribution to magazine or newspaper
DOI : 10.5169/seals-595014
ISSN: 0373-384X
URI: https://www.e-periodica.ch/cntmng?pid=ngg-002:2007:114::144
Appears in Collections:Publikationen Life Sciences und Facility Management

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