Microbial respiration, biomass, and endo- exo-enzyme activities measurements from Arctic soil microcosms incubated with cellulose polymers, Alaska, 2021 ...
Faster decomposition and respiration of soil carbon with global warming is a concern for the Arctic, which contains one of the largest stocks of soil carbon (C) and is warming three times faster than the global average, especially in winter. Microbes remain active in frozen soils, but little is know...
Main Author: | |
---|---|
Format: | Dataset |
Language: | English |
Published: |
NSF Arctic Data Center
2024
|
Subjects: | |
Online Access: | https://dx.doi.org/10.18739/a2j960b9b https://arcticdata.io/catalog/view/doi:10.18739/A2J960B9B |
id |
ftdatacite:10.18739/a2j960b9b |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.18739/a2j960b9b 2024-09-09T19:20:44+00:00 Microbial respiration, biomass, and endo- exo-enzyme activities measurements from Arctic soil microcosms incubated with cellulose polymers, Alaska, 2021 ... McMillan, Cameron 2024 text/xml https://dx.doi.org/10.18739/a2j960b9b https://arcticdata.io/catalog/view/doi:10.18739/A2J960B9B en eng NSF Arctic Data Center Cellulose addition soil incubation temperature controlled dataset Dataset 2024 ftdatacite https://doi.org/10.18739/a2j960b9b 2024-06-17T11:00:52Z Faster decomposition and respiration of soil carbon with global warming is a concern for the Arctic, which contains one of the largest stocks of soil carbon (C) and is warming three times faster than the global average, especially in winter. Microbes remain active in frozen soils, but little is known about controls on decomposition and respiration below 0 Celsius (˚C). Determining the controls on microbial respiration in frozen soils is needed to predict winter warming effects on soil carbon dioxide (CO2) emissions. To identify these controls, we incubated Arctic soil microcosms between -10 and 10 °C with cellulose polymers of different lengths and measured microbial respiration, biomass, and endo- exo-enzyme activities. With declining temperatures below 10 °C, the breakdown of long cellulose chains was increasingly inhibited by slowing rates of enzyme hydrolysis, and eventually stopped. Changes in relative activities of enzymes cleaving cellulose chain interiors (endo-cellulases) with declining temperatures ... Dataset Arctic Global warming Alaska DataCite Arctic |
institution |
Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
Cellulose addition soil incubation temperature controlled |
spellingShingle |
Cellulose addition soil incubation temperature controlled McMillan, Cameron Microbial respiration, biomass, and endo- exo-enzyme activities measurements from Arctic soil microcosms incubated with cellulose polymers, Alaska, 2021 ... |
topic_facet |
Cellulose addition soil incubation temperature controlled |
description |
Faster decomposition and respiration of soil carbon with global warming is a concern for the Arctic, which contains one of the largest stocks of soil carbon (C) and is warming three times faster than the global average, especially in winter. Microbes remain active in frozen soils, but little is known about controls on decomposition and respiration below 0 Celsius (˚C). Determining the controls on microbial respiration in frozen soils is needed to predict winter warming effects on soil carbon dioxide (CO2) emissions. To identify these controls, we incubated Arctic soil microcosms between -10 and 10 °C with cellulose polymers of different lengths and measured microbial respiration, biomass, and endo- exo-enzyme activities. With declining temperatures below 10 °C, the breakdown of long cellulose chains was increasingly inhibited by slowing rates of enzyme hydrolysis, and eventually stopped. Changes in relative activities of enzymes cleaving cellulose chain interiors (endo-cellulases) with declining temperatures ... |
format |
Dataset |
author |
McMillan, Cameron |
author_facet |
McMillan, Cameron |
author_sort |
McMillan, Cameron |
title |
Microbial respiration, biomass, and endo- exo-enzyme activities measurements from Arctic soil microcosms incubated with cellulose polymers, Alaska, 2021 ... |
title_short |
Microbial respiration, biomass, and endo- exo-enzyme activities measurements from Arctic soil microcosms incubated with cellulose polymers, Alaska, 2021 ... |
title_full |
Microbial respiration, biomass, and endo- exo-enzyme activities measurements from Arctic soil microcosms incubated with cellulose polymers, Alaska, 2021 ... |
title_fullStr |
Microbial respiration, biomass, and endo- exo-enzyme activities measurements from Arctic soil microcosms incubated with cellulose polymers, Alaska, 2021 ... |
title_full_unstemmed |
Microbial respiration, biomass, and endo- exo-enzyme activities measurements from Arctic soil microcosms incubated with cellulose polymers, Alaska, 2021 ... |
title_sort |
microbial respiration, biomass, and endo- exo-enzyme activities measurements from arctic soil microcosms incubated with cellulose polymers, alaska, 2021 ... |
publisher |
NSF Arctic Data Center |
publishDate |
2024 |
url |
https://dx.doi.org/10.18739/a2j960b9b https://arcticdata.io/catalog/view/doi:10.18739/A2J960B9B |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming Alaska |
genre_facet |
Arctic Global warming Alaska |
op_doi |
https://doi.org/10.18739/a2j960b9b |
_version_ |
1809760891635236864 |