Title: Growth-Limiting Nutrients in Sphagnum-Dominated Bogs Subject to Low and High Atmospheric Nitrogen Supply
Abstract:The effects of increased nitrogen or phosphorus supply on the productivity of Sphagnum-dominated ombrotrophic bogs in northern and southern Sweden were studied. Atmospheric nitrogen deposition in sout...The effects of increased nitrogen or phosphorus supply on the productivity of Sphagnum-dominated ombrotrophic bogs in northern and southern Sweden were studied. Atmospheric nitrogen deposition in souther Sweden (high-N site) exceeds that in northern Sweden (low-N site) by about tenfold. Vertical height growth of the Sphagnum carpet was measured by the crankedwire method. Length growth of individuals was measured by autoradiography after labelling with 14 CO 2 . The results of both methods were significantly correlated, but the cranked-wire data were systematically lower. Productivity of Sphagnum at the low-N site increase almost fourfold after additional nitrogen supply (4 g N m −1 year −1 ), but no increase was found after additional phosphorus supply (0.4 g P m −2 year −1 ) (...)Read More
Publication Year: 1992
Publication Date: 1992-03-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 456
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