The impact of permafrost thaw on ecosystem carbon balance: Plant species composition and productivity following permafrost thaw and thermokarst in Alaskan tundra
In this larger study, we are asking the question: Is old carbon that comprises the bulk of the soil organic matter pool released in response to thawing of permafrost? We are answering this question by using a combination of field and laboratory experiments to measure radiocarbon isotope ratios in so...
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Bonanza Creek LTERBoreal Ecology Cooperative Research Unit University of Alaska FairbanksP.O. Box 756780 FairbanksAK99775USA907-474-6364907-474-6251
2009
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ftdryad:oai:v1.datadryad.org:10255/dryad.17050 2023-05-15T13:09:46+02:00 The impact of permafrost thaw on ecosystem carbon balance: Plant species composition and productivity following permafrost thaw and thermokarst in Alaskan tundra KathrynCrummer Tussock tundra at treeline with permafrost thaw and thermokarst -149.2535833 W -149.2535833 E 63.87836111 N 63.87836111 S 2004-07-25 to 2004-07-31 2004-07-25 to 2004-07-31 2009-01-01 text/plain http://hdl.handle.net/10255/dryad.17050 http://metacat.lternet.edu/knb/metacat/knb-lter-bnz.348.7/xml unknown Bonanza Creek LTERBoreal Ecology Cooperative Research Unit University of Alaska FairbanksP.O. Box 756780 FairbanksAK99775USA907-474-6364907-474-6251 http://metacat.lternet.edu/knb/metacat/knb-lter-bnz.348.7/xml knb-lter-bnz.348.7 http://hdl.handle.net/10255/dryad.17050 Access to Data While metadata will be freely available to those requesting it, the data manager will assure that any restrictions on access to data sets in the database will be enforced. Data will not be released without proper permission first being obtained from the investigator who generated the data. Use of data Researchers should receive adequate acknowledgment for the use of their data by others and should be provided with copies of publications using their data. Users of data from the data base must be aware that data is not to be sold or redistributed.Citing Bonanza Creek LTER DatasetsIt is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. aboveground production net primary production foliar nitrogen nitrogen isotopes plant biomass dataset 2009 ftdryad 2020-01-01T14:36:28Z In this larger study, we are asking the question: Is old carbon that comprises the bulk of the soil organic matter pool released in response to thawing of permafrost? We are answering this question by using a combination of field and laboratory experiments to measure radiocarbon isotope ratios in soil organic matter, soil respiration, and dissolved organic carbon, in tundra ecosystems. The objective of these proposed measurements is to develop a mechanistic understanding of the SOM sources contributing to C losses following permafrost thawing. We are making these measurements at an established tundra field site near Healy, Alaska in the foothills of the Alaska Range. Field measurements center on a natural experiment where permafrost has been observed to warm and thaw over the past several decades. This area represents a gradient of sites each with a different degree of change due to permafrost thawing. As such, this area is unique for addressing questions at the time and spatial scales relevant for change in arctic ecosystems. This dataset reports aboveground biomass and aboveground net primary productivity for three sites across a gradient of permafrost thaw, as well as foliar nitrogen and foliar stable nitrogen isotopes for a subset of the plant species. Dataset alaska range Arctic permafrost Thermokarst Tundra Alaska Dryad Digital Repository (Duke University) Arctic |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
aboveground production net primary production foliar nitrogen nitrogen isotopes plant biomass |
spellingShingle |
aboveground production net primary production foliar nitrogen nitrogen isotopes plant biomass The impact of permafrost thaw on ecosystem carbon balance: Plant species composition and productivity following permafrost thaw and thermokarst in Alaskan tundra |
topic_facet |
aboveground production net primary production foliar nitrogen nitrogen isotopes plant biomass |
description |
In this larger study, we are asking the question: Is old carbon that comprises the bulk of the soil organic matter pool released in response to thawing of permafrost? We are answering this question by using a combination of field and laboratory experiments to measure radiocarbon isotope ratios in soil organic matter, soil respiration, and dissolved organic carbon, in tundra ecosystems. The objective of these proposed measurements is to develop a mechanistic understanding of the SOM sources contributing to C losses following permafrost thawing. We are making these measurements at an established tundra field site near Healy, Alaska in the foothills of the Alaska Range. Field measurements center on a natural experiment where permafrost has been observed to warm and thaw over the past several decades. This area represents a gradient of sites each with a different degree of change due to permafrost thawing. As such, this area is unique for addressing questions at the time and spatial scales relevant for change in arctic ecosystems. This dataset reports aboveground biomass and aboveground net primary productivity for three sites across a gradient of permafrost thaw, as well as foliar nitrogen and foliar stable nitrogen isotopes for a subset of the plant species. |
author2 |
KathrynCrummer |
format |
Dataset |
title |
The impact of permafrost thaw on ecosystem carbon balance: Plant species composition and productivity following permafrost thaw and thermokarst in Alaskan tundra |
title_short |
The impact of permafrost thaw on ecosystem carbon balance: Plant species composition and productivity following permafrost thaw and thermokarst in Alaskan tundra |
title_full |
The impact of permafrost thaw on ecosystem carbon balance: Plant species composition and productivity following permafrost thaw and thermokarst in Alaskan tundra |
title_fullStr |
The impact of permafrost thaw on ecosystem carbon balance: Plant species composition and productivity following permafrost thaw and thermokarst in Alaskan tundra |
title_full_unstemmed |
The impact of permafrost thaw on ecosystem carbon balance: Plant species composition and productivity following permafrost thaw and thermokarst in Alaskan tundra |
title_sort |
impact of permafrost thaw on ecosystem carbon balance: plant species composition and productivity following permafrost thaw and thermokarst in alaskan tundra |
publisher |
Bonanza Creek LTERBoreal Ecology Cooperative Research Unit University of Alaska FairbanksP.O. Box 756780 FairbanksAK99775USA907-474-6364907-474-6251 |
publishDate |
2009 |
url |
http://hdl.handle.net/10255/dryad.17050 http://metacat.lternet.edu/knb/metacat/knb-lter-bnz.348.7/xml |
op_coverage |
Tussock tundra at treeline with permafrost thaw and thermokarst -149.2535833 W -149.2535833 E 63.87836111 N 63.87836111 S 2004-07-25 to 2004-07-31 2004-07-25 to 2004-07-31 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
alaska range Arctic permafrost Thermokarst Tundra Alaska |
genre_facet |
alaska range Arctic permafrost Thermokarst Tundra Alaska |
op_relation |
http://metacat.lternet.edu/knb/metacat/knb-lter-bnz.348.7/xml knb-lter-bnz.348.7 http://hdl.handle.net/10255/dryad.17050 |
op_rights |
Access to Data While metadata will be freely available to those requesting it, the data manager will assure that any restrictions on access to data sets in the database will be enforced. Data will not be released without proper permission first being obtained from the investigator who generated the data. Use of data Researchers should receive adequate acknowledgment for the use of their data by others and should be provided with copies of publications using their data. Users of data from the data base must be aware that data is not to be sold or redistributed.Citing Bonanza Creek LTER DatasetsIt is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. |
_version_ |
1766198369562132480 |