Estimates of White Spruce density at two elevations from 1600-present
Paleoecological investigations of ecosystem responses to past climate change can provide insight into plausible scenarios of response to future change and can elucidate factors that may influence the overall predictability of such responses. There is particular interest in the rate at which subarcti...
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Bonanza Creek LTERBoreal Ecology Cooperative Research Unit University of Alaska FairbanksP.O. Box 756780 FairbanksAK99775USA907-474-6364907-474-6251
2011
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ftdryad:oai:v1.datadryad.org:10255/dryad.12074 2023-05-15T13:09:36+02:00 Estimates of White Spruce density at two elevations from 1600-present ChristopherFastie This is a treeline site in the White Mts. -147.3333333 W -144.05 E 65.5 N 63.25 S 2002-06-01 to 2002-09-28 2011-04-21T16:23:48Z http://hdl.handle.net/10255/dryad.12074 http://metacat.lternet.edu/knb/metacat/knb-lter-bnz.90.8/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.90.8/xml knb-lter-bnz.90.8 http://hdl.handle.net/10255/dryad.12074 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. paleoecological climate picea spruce tundra forests warming white mountains Alaska Range treeline tree line dataset 2011 ftdryad 2020-01-01T14:26:52Z Paleoecological investigations of ecosystem responses to past climate change can provide insight into plausible scenarios of response to future change and can elucidate factors that may influence the overall predictability of such responses. There is particular interest in the rate at which subarctic Picea populations respond to climate change, as the rate of conversion from tundra to forest may affect the rate of future climate warming. We investigated recent changes in the structure and distribution of treeline white spruce forests in the White Mountains and the Alaska Range. Treeline advance was ubiquitous, but asynchronous in time, occurring significantly earlier in the White Mountains in interior Alaska than in the Alaska Range. The mean lag between initiation of recruitment and forest development was estimated at approximately 200 years, similar to what modeling studies have found. Although continued advance of Picea is the most likely scenario of future change, the recent history of treeline advance suggests that nonlinear responses to warming may be likely due to nonlinear growth responses of individual trees to temperature, limitation of Picea establishment in highly permafrost-affected sites, and decreasing seed availability as the advancing front moves farther from dense seed sources. All of these factors may cause Picea populations to respond nonlinearly to future warming, and these potential nonlinearities caution against uncritical extrapolation from recent trends. Dataset alaska range permafrost Subarctic Tundra Alaska Dryad Digital Repository (Duke University) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
paleoecological climate picea spruce tundra forests warming white mountains Alaska Range treeline tree line |
spellingShingle |
paleoecological climate picea spruce tundra forests warming white mountains Alaska Range treeline tree line Estimates of White Spruce density at two elevations from 1600-present |
topic_facet |
paleoecological climate picea spruce tundra forests warming white mountains Alaska Range treeline tree line |
description |
Paleoecological investigations of ecosystem responses to past climate change can provide insight into plausible scenarios of response to future change and can elucidate factors that may influence the overall predictability of such responses. There is particular interest in the rate at which subarctic Picea populations respond to climate change, as the rate of conversion from tundra to forest may affect the rate of future climate warming. We investigated recent changes in the structure and distribution of treeline white spruce forests in the White Mountains and the Alaska Range. Treeline advance was ubiquitous, but asynchronous in time, occurring significantly earlier in the White Mountains in interior Alaska than in the Alaska Range. The mean lag between initiation of recruitment and forest development was estimated at approximately 200 years, similar to what modeling studies have found. Although continued advance of Picea is the most likely scenario of future change, the recent history of treeline advance suggests that nonlinear responses to warming may be likely due to nonlinear growth responses of individual trees to temperature, limitation of Picea establishment in highly permafrost-affected sites, and decreasing seed availability as the advancing front moves farther from dense seed sources. All of these factors may cause Picea populations to respond nonlinearly to future warming, and these potential nonlinearities caution against uncritical extrapolation from recent trends. |
author2 |
ChristopherFastie |
format |
Dataset |
title |
Estimates of White Spruce density at two elevations from 1600-present |
title_short |
Estimates of White Spruce density at two elevations from 1600-present |
title_full |
Estimates of White Spruce density at two elevations from 1600-present |
title_fullStr |
Estimates of White Spruce density at two elevations from 1600-present |
title_full_unstemmed |
Estimates of White Spruce density at two elevations from 1600-present |
title_sort |
estimates of white spruce density at two elevations from 1600-present |
publisher |
Bonanza Creek LTERBoreal Ecology Cooperative Research Unit University of Alaska FairbanksP.O. Box 756780 FairbanksAK99775USA907-474-6364907-474-6251 |
publishDate |
2011 |
url |
http://hdl.handle.net/10255/dryad.12074 http://metacat.lternet.edu/knb/metacat/knb-lter-bnz.90.8/xml |
op_coverage |
This is a treeline site in the White Mts. -147.3333333 W -144.05 E 65.5 N 63.25 S 2002-06-01 to 2002-09-28 |
genre |
alaska range permafrost Subarctic Tundra Alaska |
genre_facet |
alaska range permafrost Subarctic Tundra Alaska |
op_relation |
http://metacat.lternet.edu/knb/metacat/knb-lter-bnz.90.8/xml knb-lter-bnz.90.8 http://hdl.handle.net/10255/dryad.12074 |
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_ |
1766189497596248064 |