Collaborative Research: ITEX (International Tundra Experiment) AON (Arctic Observing Network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming Arctic, Utqiaġvik and Atqasuk, Alaska, 2018
Arctic ecosystems are changing in response to arctic warming, which is proceeding more than twice as fast as the global average. The International Tundra Experiment (ITEX) was established in the early 1990s to understand the effects of warming and environmental variability on tundra vegetation prope...
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Arctic Data Center
2019
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Online Access: | https://search.dataone.org/view/urn:uuid:b3161cfd-c4f2-41f9-b00f-0b7ab2eb97d5 |
id |
dataone:urn:uuid:b3161cfd-c4f2-41f9-b00f-0b7ab2eb97d5 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER GRID 500 METERS TO 1 KILOMETER IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES TRANSECT 30 METERS TO 100 METERS EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE MONTHLY TO ANNUAL 250 METERS TO 500 METERS FIELD SURVEY environment geoscientificInformation WEEKLY TO MONTHLY IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE ENVIRONMENT biota |
spellingShingle |
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER GRID 500 METERS TO 1 KILOMETER IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES TRANSECT 30 METERS TO 100 METERS EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE MONTHLY TO ANNUAL 250 METERS TO 500 METERS FIELD SURVEY environment geoscientificInformation WEEKLY TO MONTHLY IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE ENVIRONMENT biota Sergio Vargas-Zesati Craig E. Tweedie Steven Oberbauer Robert Hollister Collaborative Research: ITEX (International Tundra Experiment) AON (Arctic Observing Network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming Arctic, Utqiaġvik and Atqasuk, Alaska, 2018 |
topic_facet |
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER GRID 500 METERS TO 1 KILOMETER IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES TRANSECT 30 METERS TO 100 METERS EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE MONTHLY TO ANNUAL 250 METERS TO 500 METERS FIELD SURVEY environment geoscientificInformation WEEKLY TO MONTHLY IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE ENVIRONMENT biota |
description |
Arctic ecosystems are changing in response to arctic warming, which is proceeding more than twice as fast as the global average. The International Tundra Experiment (ITEX) was established in the early 1990s to understand the effects of warming and environmental variability on tundra vegetation properties and ecosystem function. The ITEX program has been extremely valuable for detection of changes in tundra plant and ecosystem responses to experimental warming and to background climate change across sites that span the major ecosystems of the Arctic. In 2007, the Alaskan and Greenland ITEX sites were combined into an Arctic Observatory Network (AON). The current ITEX AON project will continue to document and understand Arctic terrestrial vegetation change and its ecosystem consequences by maintaining the long-term datasets of the ITEX-AON. The warming experiment of ITEX-AON allows us to assign the cause for observed changes in response to warming instead of relying on simple correlations. This project provides urgently needed data on changes in vegetation and the importance of these changes for ecosystem services from a variety of Arctic ecosystems. This project will provide training for postdoctoral, graduate and undergraduate students in the emerging fields of remote sensing, cybertechnology and big-data analysis. The project will include outreach activities through strong relationships with the CLEO Institute in Miami; the Grand Valley State University Regional Math and Science Center; and K-12 school systems in Miami, Anchorage, Grand Rapids and El Paso. All data from this project are and will be freely available at the NSF (National Science Foundation) Arctic Data Center. The core datasets of the proposed research include manual observations of phenology, vegetation structure and composition, and ecosystem function (carbon flux and nutrient cycling) on long-term ITEX control and experimental warming plots, repeat measurement of vegetation plots on the long-term 1 kilometer 2 vegetation grids, and a multifactor warming/moisture experiment in Greenland. In 2009, the sampling scheme was expanded to include a larger spatial component to amplify the value of the measurements collected. This expansion included the addition of phenocams, automated mobile sensor platforms, and medium-scale aerial imagery. The automated platforms measure a suite of vegetation surface properties with minimal effort across focal transects spanning strong moisture and microtopographic gradients at a near-daily frequency. These measurements capture the fine-scale changes in vegetation over the growing season that are missed by lower frequency manual measurements and provide a bridge between manual measurements and aerial imagery. Medium-scale aerial imagery, using Kite Aerial or Unmanned Aerial Vehicles, is acquired throughout the growing season for scaling of manual and automated measurements; satellite imagery is referenced to medium-scale aerial imagery to aid scaling of responses to the regional level. In the newest phase of AON ITEX, we are particularly focused on understanding the relationship between landscape subsidence as a result of permafrost thaw and vegetation structure and function because of the potential for significant positive feedbacks to climate change. |
format |
Dataset |
author |
Sergio Vargas-Zesati Craig E. Tweedie Steven Oberbauer Robert Hollister |
author_facet |
Sergio Vargas-Zesati Craig E. Tweedie Steven Oberbauer Robert Hollister |
author_sort |
Sergio Vargas-Zesati |
title |
Collaborative Research: ITEX (International Tundra Experiment) AON (Arctic Observing Network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming Arctic, Utqiaġvik and Atqasuk, Alaska, 2018 |
title_short |
Collaborative Research: ITEX (International Tundra Experiment) AON (Arctic Observing Network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming Arctic, Utqiaġvik and Atqasuk, Alaska, 2018 |
title_full |
Collaborative Research: ITEX (International Tundra Experiment) AON (Arctic Observing Network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming Arctic, Utqiaġvik and Atqasuk, Alaska, 2018 |
title_fullStr |
Collaborative Research: ITEX (International Tundra Experiment) AON (Arctic Observing Network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming Arctic, Utqiaġvik and Atqasuk, Alaska, 2018 |
title_full_unstemmed |
Collaborative Research: ITEX (International Tundra Experiment) AON (Arctic Observing Network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming Arctic, Utqiaġvik and Atqasuk, Alaska, 2018 |
title_sort |
collaborative research: itex (international tundra experiment) aon (arctic observing network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming arctic, utqiaġvik and atqasuk, alaska, 2018 |
publisher |
Arctic Data Center |
publishDate |
2019 |
url |
https://search.dataone.org/view/urn:uuid:b3161cfd-c4f2-41f9-b00f-0b7ab2eb97d5 |
op_coverage |
Utqiaġvik, Alaska Atqasuk, Alaska ENVELOPE(-156.6,-156.6,71.5,71.0) BEGINDATE: 2018-06-25T00:00:00Z ENDDATE: 2018-08-13T00:00:00Z |
long_lat |
ENVELOPE(-156.6,-156.6,71.5,71.0) |
geographic |
Anchorage Arctic Greenland |
geographic_facet |
Anchorage Arctic Greenland |
genre |
Arctic Climate change Greenland permafrost Tundra Alaska |
genre_facet |
Arctic Climate change Greenland permafrost Tundra Alaska |
_version_ |
1800867385199034368 |
spelling |
dataone:urn:uuid:b3161cfd-c4f2-41f9-b00f-0b7ab2eb97d5 2024-06-03T18:46:32+00:00 Collaborative Research: ITEX (International Tundra Experiment) AON (Arctic Observing Network) - understanding the relationships between vegetation change, plant phenology, and ecosystem function in a warming Arctic, Utqiaġvik and Atqasuk, Alaska, 2018 Sergio Vargas-Zesati Craig E. Tweedie Steven Oberbauer Robert Hollister Utqiaġvik, Alaska Atqasuk, Alaska ENVELOPE(-156.6,-156.6,71.5,71.0) BEGINDATE: 2018-06-25T00:00:00Z ENDDATE: 2018-08-13T00:00:00Z 2019-01-01T00:00:00Z https://search.dataone.org/view/urn:uuid:b3161cfd-c4f2-41f9-b00f-0b7ab2eb97d5 unknown Arctic Data Center EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER GRID 500 METERS TO 1 KILOMETER IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES TRANSECT 30 METERS TO 100 METERS EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE MONTHLY TO ANNUAL 250 METERS TO 500 METERS FIELD SURVEY environment geoscientificInformation WEEKLY TO MONTHLY IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE ENVIRONMENT biota Dataset 2019 dataone:urn:node:ARCTIC 2024-06-03T18:16:30Z Arctic ecosystems are changing in response to arctic warming, which is proceeding more than twice as fast as the global average. The International Tundra Experiment (ITEX) was established in the early 1990s to understand the effects of warming and environmental variability on tundra vegetation properties and ecosystem function. The ITEX program has been extremely valuable for detection of changes in tundra plant and ecosystem responses to experimental warming and to background climate change across sites that span the major ecosystems of the Arctic. In 2007, the Alaskan and Greenland ITEX sites were combined into an Arctic Observatory Network (AON). The current ITEX AON project will continue to document and understand Arctic terrestrial vegetation change and its ecosystem consequences by maintaining the long-term datasets of the ITEX-AON. The warming experiment of ITEX-AON allows us to assign the cause for observed changes in response to warming instead of relying on simple correlations. This project provides urgently needed data on changes in vegetation and the importance of these changes for ecosystem services from a variety of Arctic ecosystems. This project will provide training for postdoctoral, graduate and undergraduate students in the emerging fields of remote sensing, cybertechnology and big-data analysis. The project will include outreach activities through strong relationships with the CLEO Institute in Miami; the Grand Valley State University Regional Math and Science Center; and K-12 school systems in Miami, Anchorage, Grand Rapids and El Paso. All data from this project are and will be freely available at the NSF (National Science Foundation) Arctic Data Center. The core datasets of the proposed research include manual observations of phenology, vegetation structure and composition, and ecosystem function (carbon flux and nutrient cycling) on long-term ITEX control and experimental warming plots, repeat measurement of vegetation plots on the long-term 1 kilometer 2 vegetation grids, and a multifactor warming/moisture experiment in Greenland. In 2009, the sampling scheme was expanded to include a larger spatial component to amplify the value of the measurements collected. This expansion included the addition of phenocams, automated mobile sensor platforms, and medium-scale aerial imagery. The automated platforms measure a suite of vegetation surface properties with minimal effort across focal transects spanning strong moisture and microtopographic gradients at a near-daily frequency. These measurements capture the fine-scale changes in vegetation over the growing season that are missed by lower frequency manual measurements and provide a bridge between manual measurements and aerial imagery. Medium-scale aerial imagery, using Kite Aerial or Unmanned Aerial Vehicles, is acquired throughout the growing season for scaling of manual and automated measurements; satellite imagery is referenced to medium-scale aerial imagery to aid scaling of responses to the regional level. In the newest phase of AON ITEX, we are particularly focused on understanding the relationship between landscape subsidence as a result of permafrost thaw and vegetation structure and function because of the potential for significant positive feedbacks to climate change. Dataset Arctic Climate change Greenland permafrost Tundra Alaska Arctic Data Center (via DataONE) Anchorage Arctic Greenland ENVELOPE(-156.6,-156.6,71.5,71.0) |