Data from: Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra
Climate change is occurring across the world, with effects varying by ecosystem and region but already occurring quickly in high-latitude and high-altitude regions. Biotic interactions are important in determining ecosystem response to such changes, but few studies have been long-term in nature, esp...
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ftzenodo:oai:zenodo.org:4937600 2023-06-06T11:50:27+02:00 Data from: Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra Little, Chelsea J. Cutting, Helen B. U. Alatalo, Juha Cooper, Elisabeth 2018-01-09 https://zenodo.org/record/4937600 https://doi.org/10.5061/dryad.2m1k2 unknown doi:10.1088/1748-9326/aa579d https://zenodo.org/communities/dryad https://zenodo.org/record/4937600 https://doi.org/10.5061/dryad.2m1k2 oai:zenodo.org:4937600 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Bistorta vivipara Alopecurus magellanicus community structure Salix polaris Dryas octopetala tundra vegetation warming experiment Holocene info:eu-repo/semantics/other dataset 2018 ftzenodo https://doi.org/10.5061/dryad.2m1k210.1088/1748-9326/aa579d 2023-04-13T23:01:42Z Climate change is occurring across the world, with effects varying by ecosystem and region but already occurring quickly in high-latitude and high-altitude regions. Biotic interactions are important in determining ecosystem response to such changes, but few studies have been long-term in nature, especially in the High Arctic. Mesic tundra plots on Svalbard, Norway, were subjected to grazing at two different intensities by captive Barnacle geese from 2003–2005, in a factorial design with warming by Open Top Chambers. Warming manipulations were continued through 2014, when we measured vegetation structure and composition as well as growth and reproduction of three dominant species in the mesic meadow. Significantly more dead vascular plant material was found in warmed compared to ambient plots, regardless of grazing history, but in contrast to many short-term experiments no difference in the amount of living material was found. This has strong implications for nutrient and carbon cycling and could feed back into community productivity. Dominant species showed increased flowering in warmed plots, especially in those plots where grazing had been applied. However, this added sexual reproduction did not translate to substantial shifts in vegetative cover. Forbs and rushes increased slightly in warmed plots regardless of grazing, while the dominant shrub, Salix polaris, generally declined with effects dependent on grazing, and the evergreen shrub Dryas octopetala declined with previous intensive grazing. There were no treatment effects on community diversity or evenness. Thus despite no changes in total live abundance, a typical short-term response to environmental conditions, we found pronounced changes in dead biomass indicating that tundra ecosystem processes respond to medium- to long-term changes in conditions caused by 12 seasons of summer warming. We suggest that while high arctic tundra plant communities are fairly resistant to current levels of climate warming, underlying ecosystem processes are beginning to ... Dataset Arctic Climate change Dryas octopetala Salix polaris Svalbard Tundra Zenodo Arctic Norway Svalbard |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Bistorta vivipara Alopecurus magellanicus community structure Salix polaris Dryas octopetala tundra vegetation warming experiment Holocene |
spellingShingle |
Bistorta vivipara Alopecurus magellanicus community structure Salix polaris Dryas octopetala tundra vegetation warming experiment Holocene Little, Chelsea J. Cutting, Helen B. U. Alatalo, Juha Cooper, Elisabeth Data from: Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra |
topic_facet |
Bistorta vivipara Alopecurus magellanicus community structure Salix polaris Dryas octopetala tundra vegetation warming experiment Holocene |
description |
Climate change is occurring across the world, with effects varying by ecosystem and region but already occurring quickly in high-latitude and high-altitude regions. Biotic interactions are important in determining ecosystem response to such changes, but few studies have been long-term in nature, especially in the High Arctic. Mesic tundra plots on Svalbard, Norway, were subjected to grazing at two different intensities by captive Barnacle geese from 2003–2005, in a factorial design with warming by Open Top Chambers. Warming manipulations were continued through 2014, when we measured vegetation structure and composition as well as growth and reproduction of three dominant species in the mesic meadow. Significantly more dead vascular plant material was found in warmed compared to ambient plots, regardless of grazing history, but in contrast to many short-term experiments no difference in the amount of living material was found. This has strong implications for nutrient and carbon cycling and could feed back into community productivity. Dominant species showed increased flowering in warmed plots, especially in those plots where grazing had been applied. However, this added sexual reproduction did not translate to substantial shifts in vegetative cover. Forbs and rushes increased slightly in warmed plots regardless of grazing, while the dominant shrub, Salix polaris, generally declined with effects dependent on grazing, and the evergreen shrub Dryas octopetala declined with previous intensive grazing. There were no treatment effects on community diversity or evenness. Thus despite no changes in total live abundance, a typical short-term response to environmental conditions, we found pronounced changes in dead biomass indicating that tundra ecosystem processes respond to medium- to long-term changes in conditions caused by 12 seasons of summer warming. We suggest that while high arctic tundra plant communities are fairly resistant to current levels of climate warming, underlying ecosystem processes are beginning to ... |
format |
Dataset |
author |
Little, Chelsea J. Cutting, Helen B. U. Alatalo, Juha Cooper, Elisabeth |
author_facet |
Little, Chelsea J. Cutting, Helen B. U. Alatalo, Juha Cooper, Elisabeth |
author_sort |
Little, Chelsea J. |
title |
Data from: Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra |
title_short |
Data from: Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra |
title_full |
Data from: Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra |
title_fullStr |
Data from: Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra |
title_full_unstemmed |
Data from: Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra |
title_sort |
data from: short-term herbivory has long-term consequences in warmed and ambient high arctic tundra |
publishDate |
2018 |
url |
https://zenodo.org/record/4937600 https://doi.org/10.5061/dryad.2m1k2 |
geographic |
Arctic Norway Svalbard |
geographic_facet |
Arctic Norway Svalbard |
genre |
Arctic Climate change Dryas octopetala Salix polaris Svalbard Tundra |
genre_facet |
Arctic Climate change Dryas octopetala Salix polaris Svalbard Tundra |
op_relation |
doi:10.1088/1748-9326/aa579d https://zenodo.org/communities/dryad https://zenodo.org/record/4937600 https://doi.org/10.5061/dryad.2m1k2 oai:zenodo.org:4937600 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.2m1k210.1088/1748-9326/aa579d |
_version_ |
1767956201982656512 |