Nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ...
biocrust, N-fixation, metagenomes, warming, microbAbstract textIntroduction. Areas of high latitude with volcanic andosol and winter snow cover commonly have a 3-5 mm thick biological soil crust (biocrust) characterized by the leafy liverwort Anthelia juratzkana. This biocrust can be long term or tr...
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Online Access: | https://dx.doi.org/10.15468/qa4utz https://www.gbif.org/dataset/a09a542a-540b-4ea1-b144-244fb1df9f6e |
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ftdatacite:10.15468/qa4utz 2024-04-28T08:39:59+00:00 Nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ... University Of Iceland 2022 https://dx.doi.org/10.15468/qa4utz https://www.gbif.org/dataset/a09a542a-540b-4ea1-b144-244fb1df9f6e en eng MGnify Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 SAMPLING_EVENT dataset Dataset 2022 ftdatacite https://doi.org/10.15468/qa4utz 2024-04-02T10:11:16Z biocrust, N-fixation, metagenomes, warming, microbAbstract textIntroduction. Areas of high latitude with volcanic andosol and winter snow cover commonly have a 3-5 mm thick biological soil crust (biocrust) characterized by the leafy liverwort Anthelia juratzkana. This biocrust can be long term or transient, especially as snow cover decreases. Although Antheliais the primary producer, the biocrust is a complex microbial community with substantial biomass and biological activities associated with bacteria and fungi. Available nitrogen is thought to bethe limiting nutrient.Methods. Acetylene reduction assays (ARA) were used as a proxy in assessing biocrust responses to temperature, moisture and light. Soil carbon and nitrogen isotopes were measured and shotgun metagenomic DNA and RNA libraries were sequenced. Decomposition rates were assessed using the tea bags index. Respiration was measured with a LI-6400 system.Results. ARA measurements yielded estimates of nitrogen fixation of 1-4 kg ha-1 yr-1. Nitrogen ... Dataset Subarctic DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
biocrust, N-fixation, metagenomes, warming, microbAbstract textIntroduction. Areas of high latitude with volcanic andosol and winter snow cover commonly have a 3-5 mm thick biological soil crust (biocrust) characterized by the leafy liverwort Anthelia juratzkana. This biocrust can be long term or transient, especially as snow cover decreases. Although Antheliais the primary producer, the biocrust is a complex microbial community with substantial biomass and biological activities associated with bacteria and fungi. Available nitrogen is thought to bethe limiting nutrient.Methods. Acetylene reduction assays (ARA) were used as a proxy in assessing biocrust responses to temperature, moisture and light. Soil carbon and nitrogen isotopes were measured and shotgun metagenomic DNA and RNA libraries were sequenced. Decomposition rates were assessed using the tea bags index. Respiration was measured with a LI-6400 system.Results. ARA measurements yielded estimates of nitrogen fixation of 1-4 kg ha-1 yr-1. Nitrogen ... |
format |
Dataset |
author |
University Of Iceland |
spellingShingle |
University Of Iceland Nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ... |
author_facet |
University Of Iceland |
author_sort |
University Of Iceland |
title |
Nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ... |
title_short |
Nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ... |
title_full |
Nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ... |
title_fullStr |
Nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ... |
title_full_unstemmed |
Nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ... |
title_sort |
nitrogen fixation rates and cyanobacteria cover in a subarctic biological soil crust are enhanced by warming, wetting and light ... |
publisher |
MGnify |
publishDate |
2022 |
url |
https://dx.doi.org/10.15468/qa4utz https://www.gbif.org/dataset/a09a542a-540b-4ea1-b144-244fb1df9f6e |
genre |
Subarctic |
genre_facet |
Subarctic |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.15468/qa4utz |
_version_ |
1797570786125414400 |