Plant community response to warming and herbivory on sub-arctic coastal terraces in Western Alaska, 2015 - 2016
To predict future changes in high latitude biomes, it is important to understand how plant communities will respond to increased temperature. Across sub-arctic systems, warming generally increases aboveground biomass in plant communities. Specifically, in arctic graminoid systems, experimental warmi...
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Arctic Data Center
2017
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Online Access: | https://search.dataone.org/view/urn:uuid:b89741bd-253d-4fe0-ac93-2b2885ab554e |
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dataone:urn:uuid:b89741bd-253d-4fe0-ac93-2b2885ab554e |
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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 |
Climate change forbs grasses International tundra experiment (ITEX) plant-herbivore interactions plant functional groups sedges shrubs tundra Yukon-Kuskokwim Delta Calamagrostis deschampsioides Carex aquatilis Carex glareosa Carex lyngbyaei Carex ramenskii Carex rariflora Chrysanthemum arcticum Conioselinum chinense Deschampsia caespitosa Empetrum nigrum Festuca rubra Leymus mollis Ligusticum scoticum Parnassia palustris Poa eminens Potentilla egedii Primula borealis Puccinellia phryganodes Rumex arcticus Salix fuscescens Salix ovalifolia Sedum rosea Stellaria humifusa Stellaria crassifolia Triglochin palustris |
spellingShingle |
Climate change forbs grasses International tundra experiment (ITEX) plant-herbivore interactions plant functional groups sedges shrubs tundra Yukon-Kuskokwim Delta Calamagrostis deschampsioides Carex aquatilis Carex glareosa Carex lyngbyaei Carex ramenskii Carex rariflora Chrysanthemum arcticum Conioselinum chinense Deschampsia caespitosa Empetrum nigrum Festuca rubra Leymus mollis Ligusticum scoticum Parnassia palustris Poa eminens Potentilla egedii Primula borealis Puccinellia phryganodes Rumex arcticus Salix fuscescens Salix ovalifolia Sedum rosea Stellaria humifusa Stellaria crassifolia Triglochin palustris Karen Beard Ryan Choi Plant community response to warming and herbivory on sub-arctic coastal terraces in Western Alaska, 2015 - 2016 |
topic_facet |
Climate change forbs grasses International tundra experiment (ITEX) plant-herbivore interactions plant functional groups sedges shrubs tundra Yukon-Kuskokwim Delta Calamagrostis deschampsioides Carex aquatilis Carex glareosa Carex lyngbyaei Carex ramenskii Carex rariflora Chrysanthemum arcticum Conioselinum chinense Deschampsia caespitosa Empetrum nigrum Festuca rubra Leymus mollis Ligusticum scoticum Parnassia palustris Poa eminens Potentilla egedii Primula borealis Puccinellia phryganodes Rumex arcticus Salix fuscescens Salix ovalifolia Sedum rosea Stellaria humifusa Stellaria crassifolia Triglochin palustris |
description |
To predict future changes in high latitude biomes, it is important to understand how plant communities will respond to increased temperature. Across sub-arctic systems, warming generally increases aboveground biomass in plant communities. Specifically, in arctic graminoid systems, experimental warming has been shown to increase productivity, aboveground biomass and leaf litter production, and stimulate early-season growth. Warming can also decrease species richness, and reduce foliar nitrogen (N) in aboveground biomass over the growing season. Migrating geese are important grazers in arctic and subarctic ecosystems during summer breeding months. Avian herbivores depend on high quality forage (high N) and are often found at high enough densities to impact vegetation communities. Exclosure experiments show that goose herbivory reduces biomass of herbaceous species but increases net above-ground primary production and N concentrations of grazing-tolerant sedges, and sometimes even increases species richness. Goose herbivory also alters plant physiological processes as evidenced by increased N uptake by plants, as well as the biophysical processes that affect N cycling through trampling and fecal deposition. Thus, high-density populations of avian herbivores can have top-down control on their vegetation communities. While increasing global temperatures may increase aboveground biomass and decrease species richness in plant communities, herbivory could potentially mediate, or even reverse, these responses. For example, Post and Pedersen (2008) suggest that herbivory may exacerbate plant response to warming because both effects increase rates of productivity, while simultaneously reducing the effects of warming on aboveground biomass. If the interaction between warming and herbivory causes a shift in plant abundance and community functional groups, this could cascade through the system resulting in changes in nutrient cycling and plant-animal feedbacks. The Yukon-Kuskokwim (Y-K) Delta is one of the largest river deltas in the world and is a globally important breeding area for millions of long-distance migratory waterfowl and shorebird species. The majority of these species nest in high densities close to the ocean among lowland coastal habitat. Geese populations utilize overlapping habitats and shift from more coastal to more interior habitats over the growing season. The expectations for how vegetation responds to increasing temperature and changes in herbivory with climate change will vary for different plant communities. We propose to conduct an experiment that investigates the impact of warming and herbivory on three coastal sub-arctic vegetation communities in the Y-K Delta addressing the following questions: 1) How does warming impact vegetation biomass and community composition; 2) How does herbivory impact species composition and plant functional groups; and 3) How do the different responses to warming and herbivory interact? |
format |
Dataset |
author |
Karen Beard Ryan Choi |
author_facet |
Karen Beard Ryan Choi |
author_sort |
Karen Beard |
title |
Plant community response to warming and herbivory on sub-arctic coastal terraces in Western Alaska, 2015 - 2016 |
title_short |
Plant community response to warming and herbivory on sub-arctic coastal terraces in Western Alaska, 2015 - 2016 |
title_full |
Plant community response to warming and herbivory on sub-arctic coastal terraces in Western Alaska, 2015 - 2016 |
title_fullStr |
Plant community response to warming and herbivory on sub-arctic coastal terraces in Western Alaska, 2015 - 2016 |
title_full_unstemmed |
Plant community response to warming and herbivory on sub-arctic coastal terraces in Western Alaska, 2015 - 2016 |
title_sort |
plant community response to warming and herbivory on sub-arctic coastal terraces in western alaska, 2015 - 2016 |
publisher |
Arctic Data Center |
publishDate |
2017 |
url |
https://search.dataone.org/view/urn:uuid:b89741bd-253d-4fe0-ac93-2b2885ab554e |
op_coverage |
Yukon–Kuskokwim Delta, Alaska ENVELOPE(-165.6167,-165.5327,61.26,61.2497) BEGINDATE: 2015-05-01T00:00:00Z ENDDATE: 2016-08-31T00:00:00Z |
long_lat |
ENVELOPE(-112.453,-112.453,57.591,57.591) ENVELOPE(140.013,140.013,-66.668,-66.668) ENVELOPE(-165.6167,-165.5327,61.26,61.2497) |
geographic |
Arctic Yukon The ''Y'' Pedersen |
geographic_facet |
Arctic Yukon The ''Y'' Pedersen |
genre |
Arctic Carex aquatilis Climate change Empetrum nigrum Kuskokwim Puccinellia phryganodes Stellaria humifusa Subarctic Tundra Alaska Yukon |
genre_facet |
Arctic Carex aquatilis Climate change Empetrum nigrum Kuskokwim Puccinellia phryganodes Stellaria humifusa Subarctic Tundra Alaska Yukon |
_version_ |
1800868157730062336 |
spelling |
dataone:urn:uuid:b89741bd-253d-4fe0-ac93-2b2885ab554e 2024-06-03T18:46:35+00:00 Plant community response to warming and herbivory on sub-arctic coastal terraces in Western Alaska, 2015 - 2016 Karen Beard Ryan Choi Yukon–Kuskokwim Delta, Alaska ENVELOPE(-165.6167,-165.5327,61.26,61.2497) BEGINDATE: 2015-05-01T00:00:00Z ENDDATE: 2016-08-31T00:00:00Z 2017-12-15T00:00:00Z https://search.dataone.org/view/urn:uuid:b89741bd-253d-4fe0-ac93-2b2885ab554e unknown Arctic Data Center Climate change forbs grasses International tundra experiment (ITEX) plant-herbivore interactions plant functional groups sedges shrubs tundra Yukon-Kuskokwim Delta Calamagrostis deschampsioides Carex aquatilis Carex glareosa Carex lyngbyaei Carex ramenskii Carex rariflora Chrysanthemum arcticum Conioselinum chinense Deschampsia caespitosa Empetrum nigrum Festuca rubra Leymus mollis Ligusticum scoticum Parnassia palustris Poa eminens Potentilla egedii Primula borealis Puccinellia phryganodes Rumex arcticus Salix fuscescens Salix ovalifolia Sedum rosea Stellaria humifusa Stellaria crassifolia Triglochin palustris Dataset 2017 dataone:urn:node:ARCTIC 2024-06-03T18:18:20Z To predict future changes in high latitude biomes, it is important to understand how plant communities will respond to increased temperature. Across sub-arctic systems, warming generally increases aboveground biomass in plant communities. Specifically, in arctic graminoid systems, experimental warming has been shown to increase productivity, aboveground biomass and leaf litter production, and stimulate early-season growth. Warming can also decrease species richness, and reduce foliar nitrogen (N) in aboveground biomass over the growing season. Migrating geese are important grazers in arctic and subarctic ecosystems during summer breeding months. Avian herbivores depend on high quality forage (high N) and are often found at high enough densities to impact vegetation communities. Exclosure experiments show that goose herbivory reduces biomass of herbaceous species but increases net above-ground primary production and N concentrations of grazing-tolerant sedges, and sometimes even increases species richness. Goose herbivory also alters plant physiological processes as evidenced by increased N uptake by plants, as well as the biophysical processes that affect N cycling through trampling and fecal deposition. Thus, high-density populations of avian herbivores can have top-down control on their vegetation communities. While increasing global temperatures may increase aboveground biomass and decrease species richness in plant communities, herbivory could potentially mediate, or even reverse, these responses. For example, Post and Pedersen (2008) suggest that herbivory may exacerbate plant response to warming because both effects increase rates of productivity, while simultaneously reducing the effects of warming on aboveground biomass. If the interaction between warming and herbivory causes a shift in plant abundance and community functional groups, this could cascade through the system resulting in changes in nutrient cycling and plant-animal feedbacks. The Yukon-Kuskokwim (Y-K) Delta is one of the largest river deltas in the world and is a globally important breeding area for millions of long-distance migratory waterfowl and shorebird species. The majority of these species nest in high densities close to the ocean among lowland coastal habitat. Geese populations utilize overlapping habitats and shift from more coastal to more interior habitats over the growing season. The expectations for how vegetation responds to increasing temperature and changes in herbivory with climate change will vary for different plant communities. We propose to conduct an experiment that investigates the impact of warming and herbivory on three coastal sub-arctic vegetation communities in the Y-K Delta addressing the following questions: 1) How does warming impact vegetation biomass and community composition; 2) How does herbivory impact species composition and plant functional groups; and 3) How do the different responses to warming and herbivory interact? Dataset Arctic Carex aquatilis Climate change Empetrum nigrum Kuskokwim Puccinellia phryganodes Stellaria humifusa Subarctic Tundra Alaska Yukon Arctic Data Center (via DataONE) Arctic Yukon The ''Y'' ENVELOPE(-112.453,-112.453,57.591,57.591) Pedersen ENVELOPE(140.013,140.013,-66.668,-66.668) ENVELOPE(-165.6167,-165.5327,61.26,61.2497) |