Nitrogen Deposition and the Biodiversity of Boreal Forests: Implications for the Nitrogen Critical Load
The critical load concept is used to establish the deposition levels which ecosystems can tolerate without significant harmful effects. Here we summarize work within the Swedish research program Abatement Strategies for Transboundary Air Pollution (ASTA) assessing the critical load of N for boreal f...
Published in: | AMBIO: A Journal of the Human Environment |
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Royal Swedish Academy of Sciences
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ftbioone:10.1579/0044-7447-34.1.20 2023-07-30T04:05:52+02:00 Nitrogen Deposition and the Biodiversity of Boreal Forests: Implications for the Nitrogen Critical Load Annika Nordin Joachim Strengbom Johanna Witzell Torgny Näsholm Lars Ericson Annika Nordin Joachim Strengbom Johanna Witzell Torgny Näsholm Lars Ericson world 2005-02-01 text/HTML https://doi.org/10.1579/0044-7447-34.1.20 en eng Royal Swedish Academy of Sciences doi:10.1579/0044-7447-34.1.20 All rights reserved. https://doi.org/10.1579/0044-7447-34.1.20 Text 2005 ftbioone https://doi.org/10.1579/0044-7447-34.1.20 2023-07-09T09:35:25Z The critical load concept is used to establish the deposition levels which ecosystems can tolerate without significant harmful effects. Here we summarize work within the Swedish research program Abatement Strategies for Transboundary Air Pollution (ASTA) assessing the critical load of N for boreal forests. Results from both field experiments in an area with low background N deposition in northern Sweden, and from a large-scale monitoring study, show that important vegetational changes start to take place when adding low N doses and that recovery of the vegetation after ceasing N input is a very slow process. The data presented indicate that changes in key ecosystem components occur even at a lower rate of N input than the present recommended empirical critical load for boreal forest understorey vegetation of 10–15 kg N ha−1 yr−1. Based on the data presented, we suggest that the critical load should be lowered to 6 kg N ha−1 yr−1. Text Northern Sweden BioOne Online Journals AMBIO: A Journal of the Human Environment 34 1 20 24 |
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English |
description |
The critical load concept is used to establish the deposition levels which ecosystems can tolerate without significant harmful effects. Here we summarize work within the Swedish research program Abatement Strategies for Transboundary Air Pollution (ASTA) assessing the critical load of N for boreal forests. Results from both field experiments in an area with low background N deposition in northern Sweden, and from a large-scale monitoring study, show that important vegetational changes start to take place when adding low N doses and that recovery of the vegetation after ceasing N input is a very slow process. The data presented indicate that changes in key ecosystem components occur even at a lower rate of N input than the present recommended empirical critical load for boreal forest understorey vegetation of 10–15 kg N ha−1 yr−1. Based on the data presented, we suggest that the critical load should be lowered to 6 kg N ha−1 yr−1. |
author2 |
Annika Nordin Joachim Strengbom Johanna Witzell Torgny Näsholm Lars Ericson |
format |
Text |
author |
Annika Nordin Joachim Strengbom Johanna Witzell Torgny Näsholm Lars Ericson |
spellingShingle |
Annika Nordin Joachim Strengbom Johanna Witzell Torgny Näsholm Lars Ericson Nitrogen Deposition and the Biodiversity of Boreal Forests: Implications for the Nitrogen Critical Load |
author_facet |
Annika Nordin Joachim Strengbom Johanna Witzell Torgny Näsholm Lars Ericson |
author_sort |
Annika Nordin |
title |
Nitrogen Deposition and the Biodiversity of Boreal Forests: Implications for the Nitrogen Critical Load |
title_short |
Nitrogen Deposition and the Biodiversity of Boreal Forests: Implications for the Nitrogen Critical Load |
title_full |
Nitrogen Deposition and the Biodiversity of Boreal Forests: Implications for the Nitrogen Critical Load |
title_fullStr |
Nitrogen Deposition and the Biodiversity of Boreal Forests: Implications for the Nitrogen Critical Load |
title_full_unstemmed |
Nitrogen Deposition and the Biodiversity of Boreal Forests: Implications for the Nitrogen Critical Load |
title_sort |
nitrogen deposition and the biodiversity of boreal forests: implications for the nitrogen critical load |
publisher |
Royal Swedish Academy of Sciences |
publishDate |
2005 |
url |
https://doi.org/10.1579/0044-7447-34.1.20 |
op_coverage |
world |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
https://doi.org/10.1579/0044-7447-34.1.20 |
op_relation |
doi:10.1579/0044-7447-34.1.20 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1579/0044-7447-34.1.20 |
container_title |
AMBIO: A Journal of the Human Environment |
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34 |
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1 |
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20 |
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24 |
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1772818165527478272 |