The impact of simulated chronic nitrogen deposition on the biomass and N2-fixation activity of two boreal feather moss–cyanobacteria associations
Bryophytes achieve substantial biomass and play several key functional roles in boreal forests that can influence how carbon (C) and nitrogen (N) cycling respond to atmospheric deposition of reactive nitrogen (Nr). They associate with cyanobacteria that fix atmospheric N2, and downregulation of this...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3871366 http://www.ncbi.nlm.nih.gov/pubmed/24196519 https://doi.org/10.1098/rsbl.2013.0797 |
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ftpubmed:oai:pubmedcentral.nih.gov:3871366 2023-05-15T17:44:43+02:00 The impact of simulated chronic nitrogen deposition on the biomass and N2-fixation activity of two boreal feather moss–cyanobacteria associations Gundale, Michael J. Bach, Lisbet H. Nordin, Annika 2013-12-23 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3871366 http://www.ncbi.nlm.nih.gov/pubmed/24196519 https://doi.org/10.1098/rsbl.2013.0797 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/24196519 http://dx.doi.org/10.1098/rsbl.2013.0797 © 2013 The Author(s) Published by the Royal Society. All rights reserved. Global Change Biology Text 2013 ftpubmed https://doi.org/10.1098/rsbl.2013.0797 2014-12-28T00:48:37Z Bryophytes achieve substantial biomass and play several key functional roles in boreal forests that can influence how carbon (C) and nitrogen (N) cycling respond to atmospheric deposition of reactive nitrogen (Nr). They associate with cyanobacteria that fix atmospheric N2, and downregulation of this process may offset anthropogenic Nr inputs to boreal systems. Bryophytes also promote soil C accumulation by thermally insulating soils, and changes in their biomass influence soil C dynamics. Using a unique large-scale (0.1 ha forested plots), long-term experiment (16 years) in northern Sweden where we simulated anthropogenic Nr deposition, we measured the biomass and N2-fixation response of two bryophyte species, the feather mosses Hylocomium splendens and Pleurozium schreberi. Our data show that the biomass declined for both species; however, N2-fixation rates per unit mass and per unit area declined only for H. splendens. The low and high treatments resulted in a 29% and 54% reduction in total feather moss biomass, and a 58% and 97% reduction in total N2-fixation rate per unit area, respectively. These results help to quantify the sensitivity of feather moss biomass and N2 fixation to chronic Nr deposition, which is relevant for modelling ecosystem C and N balances in boreal ecosystems. Text Northern Sweden PubMed Central (PMC) Biology Letters 9 6 20130797 |
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PubMed Central (PMC) |
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English |
topic |
Global Change Biology |
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Global Change Biology Gundale, Michael J. Bach, Lisbet H. Nordin, Annika The impact of simulated chronic nitrogen deposition on the biomass and N2-fixation activity of two boreal feather moss–cyanobacteria associations |
topic_facet |
Global Change Biology |
description |
Bryophytes achieve substantial biomass and play several key functional roles in boreal forests that can influence how carbon (C) and nitrogen (N) cycling respond to atmospheric deposition of reactive nitrogen (Nr). They associate with cyanobacteria that fix atmospheric N2, and downregulation of this process may offset anthropogenic Nr inputs to boreal systems. Bryophytes also promote soil C accumulation by thermally insulating soils, and changes in their biomass influence soil C dynamics. Using a unique large-scale (0.1 ha forested plots), long-term experiment (16 years) in northern Sweden where we simulated anthropogenic Nr deposition, we measured the biomass and N2-fixation response of two bryophyte species, the feather mosses Hylocomium splendens and Pleurozium schreberi. Our data show that the biomass declined for both species; however, N2-fixation rates per unit mass and per unit area declined only for H. splendens. The low and high treatments resulted in a 29% and 54% reduction in total feather moss biomass, and a 58% and 97% reduction in total N2-fixation rate per unit area, respectively. These results help to quantify the sensitivity of feather moss biomass and N2 fixation to chronic Nr deposition, which is relevant for modelling ecosystem C and N balances in boreal ecosystems. |
format |
Text |
author |
Gundale, Michael J. Bach, Lisbet H. Nordin, Annika |
author_facet |
Gundale, Michael J. Bach, Lisbet H. Nordin, Annika |
author_sort |
Gundale, Michael J. |
title |
The impact of simulated chronic nitrogen deposition on the biomass and N2-fixation activity of two boreal feather moss–cyanobacteria associations |
title_short |
The impact of simulated chronic nitrogen deposition on the biomass and N2-fixation activity of two boreal feather moss–cyanobacteria associations |
title_full |
The impact of simulated chronic nitrogen deposition on the biomass and N2-fixation activity of two boreal feather moss–cyanobacteria associations |
title_fullStr |
The impact of simulated chronic nitrogen deposition on the biomass and N2-fixation activity of two boreal feather moss–cyanobacteria associations |
title_full_unstemmed |
The impact of simulated chronic nitrogen deposition on the biomass and N2-fixation activity of two boreal feather moss–cyanobacteria associations |
title_sort |
impact of simulated chronic nitrogen deposition on the biomass and n2-fixation activity of two boreal feather moss–cyanobacteria associations |
publisher |
The Royal Society |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3871366 http://www.ncbi.nlm.nih.gov/pubmed/24196519 https://doi.org/10.1098/rsbl.2013.0797 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/24196519 http://dx.doi.org/10.1098/rsbl.2013.0797 |
op_rights |
© 2013 The Author(s) Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rsbl.2013.0797 |
container_title |
Biology Letters |
container_volume |
9 |
container_issue |
6 |
container_start_page |
20130797 |
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1766146999051091968 |