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arctic ecosystemsclimate change
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4 dossier(s) trouvé(s) portant l’étiquette "environmental change" (les projets pluriannuels sont regroupés):
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Capitalizing on long-term experimental manipulations to understand and predict arctic terrestrial ecosystem responses to climate warming
chercheur principal: Grogan, Paul
Année(s) de permis: 2023 2022 2021 2019
Résumé: The objectives of this research project are: 1) to determine the biogeochemical and ecological significance of our discovery that mesic tundra plant growth can be co-limited by nitrogen (N) and phosphorus (P); 2) to predict the likely impacts of not just climate change, but also declining caribou and other mammalian herbivory, on tundra deciduous and evergreen shrub abundances; and, 3) to evaluate...
Année(s) de permis: 2023 2022 2021 2019
Résumé: The objectives of this research project are: 1) to determine the biogeochemical and ecological significance of our discovery that mesic tundra plant growth can be co-limited by nitrogen (N) and phosphorus (P); 2) to predict the likely impacts of not just climate change, but also declining caribou and other mammalian herbivory, on tundra deciduous and evergreen shrub abundances; and, 3) to evaluate...
Biogeochemical controls on the structure and functioning of low arctic ecosystems
chercheur principal: Grogan, Paul
Année(s) de permis: 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008
Résumé: The Arctic is undoubtedly experiencing several major perturbations including climate change, and resource development and extraction (e.g. mining and pipeline construction) that are very likely to substantially affect the structure and functioning of its ecosystems. As a terrestrial ecosystem ecologist, the long-term goal of this research over the next 15-20 years is to substantially advance the u...
Année(s) de permis: 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008
Résumé: The Arctic is undoubtedly experiencing several major perturbations including climate change, and resource development and extraction (e.g. mining and pipeline construction) that are very likely to substantially affect the structure and functioning of its ecosystems. As a terrestrial ecosystem ecologist, the long-term goal of this research over the next 15-20 years is to substantially advance the u...
Climate forcing factors and the record of climatic variability in the western Canadian Arctic during the past 2000 years
chercheur principal: Tomkins, Jessica
Année(s) de permis: 2006 2005
Résumé: The idea of the study is that researchers use the layers of sediment in a lake-bottom to figure out what the climate was like every year from last year to 2000 years ago. The researchers want to 1) look at cores of lake-bottom sediment that show layers...
Année(s) de permis: 2006 2005
Résumé: The idea of the study is that researchers use the layers of sediment in a lake-bottom to figure out what the climate was like every year from last year to 2000 years ago. The researchers want to 1) look at cores of lake-bottom sediment that show layers...
Climate Geochemistry
chercheur principal: Guo, Laodong
Année(s) de permis: 2005 2004
Résumé: The purpose of this study is to collect river waters to determine the concentrations of dissolved organic carbon, particulate organic carbon, and nutrients, including nitrate, phosphate and silicate, and to examine their temporary variations related to c...
Année(s) de permis: 2005 2004
Résumé: The purpose of this study is to collect river waters to determine the concentrations of dissolved organic carbon, particulate organic carbon, and nutrients, including nitrate, phosphate and silicate, and to examine their temporary variations related to c...
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