2000. Response of subarctic vegetation to transient climatic change on the Seward Peninsula in north-west Alaska
Understanding the response of terrestrial ecosystems to climatic warming is a challenge because of the complex interactions of climate, disturbance, and recruitment across the landscape. We use a spatially explicit model (ALFRESCO) to simulate the transient response of subarctic vegetation to climat...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.420.4363 2023-05-15T18:19:18+02:00 2000. Response of subarctic vegetation to transient climatic change on the Seward Peninsula in north-west Alaska T. Scott Rupp F. Stuart Chapin Iii Anthony M. Starfield The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.4363 http://www.lter.uaf.edu/pdf/669_rupp_chapin_2000.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.4363 http://www.lter.uaf.edu/pdf/669_rupp_chapin_2000.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.lter.uaf.edu/pdf/669_rupp_chapin_2000.pdf boreal forest climatic change landscape dynamics spatially explicit transient dynamics treeline text ftciteseerx 2016-01-08T03:59:39Z Understanding the response of terrestrial ecosystems to climatic warming is a challenge because of the complex interactions of climate, disturbance, and recruitment across the landscape. We use a spatially explicit model (ALFRESCO) to simulate the transient response of subarctic vegetation to climatic warming on the Seward Peninsula (80 000 km 2) in north-west Alaska. Model calibration efforts showed that ®re ignition was less sensitive than ®re spread to regional climate (temperature and precipitation). In the model simulations a warming climate led to slightly more ®res and much larger ®res and expansion of forest into previously treeless tundra. Vegetation and ®re regime continued to change for centuries after cessation of the simulated climate warming. Flammability increased rapidly in direct response to climate warming and more gradually in response to climate-induced vegetation change. In the simulations warming caused as much as a 228 % increase in the total area burned per decade, leading to an increasingly early successional and more homogenous deciduous forestdominated landscape. A single transient 40-y drought led to the development of a novel grassland±steppe ecosystem that persisted inde®nitely and caused permanent increases in ®res in both the grassland and adjacent vegetation. These simulated changes in vegetation and disturbance dynamics under a warming climate have important implications for regional carbon budgets and biotic feedbacks to regional climate. Text Seward Peninsula Subarctic Tundra Alaska Unknown |
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Open Polar |
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ftciteseerx |
language |
English |
topic |
boreal forest climatic change landscape dynamics spatially explicit transient dynamics treeline |
spellingShingle |
boreal forest climatic change landscape dynamics spatially explicit transient dynamics treeline T. Scott Rupp F. Stuart Chapin Iii Anthony M. Starfield 2000. Response of subarctic vegetation to transient climatic change on the Seward Peninsula in north-west Alaska |
topic_facet |
boreal forest climatic change landscape dynamics spatially explicit transient dynamics treeline |
description |
Understanding the response of terrestrial ecosystems to climatic warming is a challenge because of the complex interactions of climate, disturbance, and recruitment across the landscape. We use a spatially explicit model (ALFRESCO) to simulate the transient response of subarctic vegetation to climatic warming on the Seward Peninsula (80 000 km 2) in north-west Alaska. Model calibration efforts showed that ®re ignition was less sensitive than ®re spread to regional climate (temperature and precipitation). In the model simulations a warming climate led to slightly more ®res and much larger ®res and expansion of forest into previously treeless tundra. Vegetation and ®re regime continued to change for centuries after cessation of the simulated climate warming. Flammability increased rapidly in direct response to climate warming and more gradually in response to climate-induced vegetation change. In the simulations warming caused as much as a 228 % increase in the total area burned per decade, leading to an increasingly early successional and more homogenous deciduous forestdominated landscape. A single transient 40-y drought led to the development of a novel grassland±steppe ecosystem that persisted inde®nitely and caused permanent increases in ®res in both the grassland and adjacent vegetation. These simulated changes in vegetation and disturbance dynamics under a warming climate have important implications for regional carbon budgets and biotic feedbacks to regional climate. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
T. Scott Rupp F. Stuart Chapin Iii Anthony M. Starfield |
author_facet |
T. Scott Rupp F. Stuart Chapin Iii Anthony M. Starfield |
author_sort |
T. Scott Rupp |
title |
2000. Response of subarctic vegetation to transient climatic change on the Seward Peninsula in north-west Alaska |
title_short |
2000. Response of subarctic vegetation to transient climatic change on the Seward Peninsula in north-west Alaska |
title_full |
2000. Response of subarctic vegetation to transient climatic change on the Seward Peninsula in north-west Alaska |
title_fullStr |
2000. Response of subarctic vegetation to transient climatic change on the Seward Peninsula in north-west Alaska |
title_full_unstemmed |
2000. Response of subarctic vegetation to transient climatic change on the Seward Peninsula in north-west Alaska |
title_sort |
2000. response of subarctic vegetation to transient climatic change on the seward peninsula in north-west alaska |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.4363 http://www.lter.uaf.edu/pdf/669_rupp_chapin_2000.pdf |
genre |
Seward Peninsula Subarctic Tundra Alaska |
genre_facet |
Seward Peninsula Subarctic Tundra Alaska |
op_source |
http://www.lter.uaf.edu/pdf/669_rupp_chapin_2000.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.4363 http://www.lter.uaf.edu/pdf/669_rupp_chapin_2000.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766196380397731840 |