9 dossier(s) trouvé(s) portant l’étiquette "ecosystem changes" (les projets pluriannuels sont regroupés):
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NASA Arctic-Boreal Vulnerability Experiment (ABoVE) Airborne Flights 2023
chercheur principal: Miller, Charles E
Année(s) de permis: 2023
Résumé: This licence has been issued for the scientific research application No. 5601. From 2017 – 2022, ABoVE airborne teams collected data across a wide variety of ecosystems in both the US and Canada. Depending on available funds, the team may re-fly one of the sensors to collect hyperspectral data at several locations in 2023. For 2023, the NASA Dynamic Aviation King Air B-200 aircraft with a h...


Tundra shrub response to climate change-exacerbated disturbances
chercheur principal: Baltzer, Jennifer L
Année(s) de permis: 2023
Résumé: This licence has been issued for the scientific research application No.5567. This project has two primary objectives: 1) To investigate the differences in shrub productivity traits between undisturbed and disturbed tundra sites to better understand the impact of shrub expansion and disturbance on ecosystem function. 2) To investigate the impact of shrub productivity trait differences on deco...


Scotty Creek 2.0: how interaction between rapidly thawing permafrost and wildfire affect peatland complex trace gas exchanges
chercheur principal: Sonnentag, Oliver
Année(s) de permis: 2024 2023
Résumé: This licence has been issued for the scientific research application No.5532. The objective of the research project is to elucidate the change in the atmospheric carbon balance of thawing permafrost regions post-disturbance. The impact of disturbances such as fire, especially in conjunction with permafrost thaw, are still not well understood. By installing a new 15-m eddy covariance tower at Sc...


Beaufort Sea Coastal and Nearshore Geoscience Research
chercheur principal: Whalen, Dustin JR
Année(s) de permis: 2024 2023 2022
Résumé: This licence has been issued for the scientific research application No.4756. The objectives of this project are as follows: 1) Updated assessment of the state of the ISR coastline This is a continuation of long term monitoring recordings to observe the coastal change across the Inuvialuit Settlement Region (ISR). The research team will work with community members to establish new areas of co...


Improving Habitat Connectivity to Enhance Productive Capacity of Arctic Freshwater Ecosystems
chercheur principal: Tonn, William
Année(s) de permis: 2014 2013 2012 2011 2010 2009
Résumé: The objectives of this research project are: to study the freshwater ecology, hydrology, and hydraulics of small lakes and streams in the Lac de Gras basin before habitat modification; to monitor the changes in ecosystem productive capacity resulting from habitat modifications designed to increase habitat connectivity and fish passage; and to assess the effectiveness of such habitat modifications ...


Investigating the cumulative effects of environmental change and human activity in the Tathlina watershed
chercheur principal: Laidlaw, Shawn
Année(s) de permis: 2013 2012
Résumé: The purpose of this project is to: 1) coordinate monitoring and research efforts in the watershed between the community, government, and universities; 2) understand current aquatic health of the watershed using water quality, macroinvertebrates, aquatic furbearers and fish as indicators of ecosystem health; 3) understand historical environmental change and contaminant loading in the watershed u...


Biocomplexity of frost-boil ecosystems
chercheur principal: Walker, Donald A
Année(s) de permis: 2006 2005 2004 2003
Résumé: The central goal of this project is to understand the complex linkages between biogeochemical cycles, vegetation, disturbance, and climate across the full summer temperature gradient in the Arctic in order to better predict ecosystem responses to changing climate. A group of 4-6 researchers will fly to Green Cabin on Banks Island, on to Mould Bay on Prince Patrick Island, and then to Isachsen o...


Evaluation of New Technologies for Environmental Impact Assessment in the Offshore, Canadian Beaufort Sea
chercheur principal: Blasco, Steve M
Année(s) de permis: 2001
Résumé: The Coast Guard vessel CCGS Nahidik will be used as a research platform to conduct offshore surveys in the Beaufort Sea. A regional grid of survey lines which were first surveyed in the1980's will be resurveyed as follows: (1) using a 300kHz short range multibeam echo sounder (Simrad EM 3000) to produce along-track maps of the topography and character of the seabed. These tracks will be approxi...


An Exploratory Evaluation of the Effect of the Climate Change During the Past Two Centuries on Structure of Jack Pine Forests.
chercheur principal: Osawa, Akira
Année(s) de permis: 1999
Résumé: The main objective of the proposed research is to reconstruct the structure of monospecific forests of different ages, and to explore whether or not the recent climate change has affected the structure of the forests in northern Canada. Pure stands of Jack pine or aspen will be studied in Wood Buffalo National Park. The intent is to determine the effect of the so-called Climate Change on those f...


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