10 dossier(s) trouvé(s) portant l’étiquette "biogeochemical processes" (les projets pluriannuels sont regroupés): Vous ne trouvez pas les résultats souhaités? Essayez la recherche avancée..
chercheur principal:Strauss, Justin Vincent Année(s) de permis:2024
2023
2022 Résumé:
This licence has been issued for the scientific research application No.5411.
or this latest phase of research, the research team propose to integrate field observations, geochemical techniques, and historical remote sensing analysis to quantify the rates and processes by which sediment is generated from bedrock and transported downslope via hillslope and river processes under a changing climat...
chercheur principal:Knights, Deon Hanley Année(s) de permis:
2022
Résumé:
This licence has been issued for the scientific research application No.4926.
To improve the understanding of biogeochemical cycling in arctic deltas, the principal investigator (PI) propose fieldwork to characterize nitrate processing rates across a range of streams and lakes on the Mackenzie delta.
This field expedition will primarily consist of the following three methods: 1) solute trac...
chercheur principal:Merzouk, Anissa Année(s) de permis:
2021
Résumé:
This licence has been issued for the scientific research application No.4997.
The aim of the research programs supported by the Amundsen in 2021 is to study on a long-term basis how climate induced changes are impacting the marine ecosystem, carbon cycle, contaminant transport, biogeochemical fluxes, and exchange processes across the ocean-sea ice-atmosphere interface in the Canadian Arctic Oce...
chercheur principal:Varner, Ruth K Année(s) de permis:
2019
Résumé:
The aim of this project is to combine remote sensing data, field measurements and biogeochemical modeling to improve methane emissions estimates from thawing permafrost peatland landscapes at local, regional and global scales. To accomplish this, the research team will integrate data on water table and vegetation from remote sensing (satellites, unmanned aerial vehicle (UAVs)), with local measurem...
chercheur principal:Babin, Marcel Année(s) de permis:
2019
Résumé:
The specific objectives of this project are:
1) to document trends in export of coastal, riverine and subterranean dissolved and particulate organic matter and carbon into the Arctic Ocean;
2) to determine their fate and related processes (origin and age, transport, physical, chemical, and biological transformation) in coastal waters and estuarine sediment; and
3) to assess the impacts of thes...
chercheur principal:Lesack, Lance Année(s) de permis:2017201620152014201020092007
2006
2005200420032002200120001999199819971996199519941993 Résumé:
The long-term goal of this project is to develop a biogeochemical model for lakes in the Mackenzie Delta, and ultimately, a more general ecosystem model for floodplains and deltas of major world rivers that will help assess the effects of multiple stresses on rivers resulting from global change. Numerous major river deltas in the Arctic circumpolar region are lake-rich because of thermokarst effec...
chercheur principal:Walker, Donald A Année(s) de permis:2006
2005
20042003 Résumé:
The 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...
chercheur principal:Guo, Laodong Année(s) de permis:
2005
2004 Résumé:
The purpose of the study is to better understand how climate and environmental changes affect river water chemistry and material export fluxes, and in turn, how biogeochemical tracers can be used to examine the impacts and biogeochemical consequences of environmental changes. This is the second year of a three-year study.
The researchers plan to sample the Mackenzie River starting in late Apri...
chercheur principal:Fortier, Louis Année(s) de permis:2004
2003
2002 Résumé:
The Canadian Arctic Shelf Exchange Study (CASES), a major international effort under Canadian leadership, aims to understand the biogeochemical and ecological consequences of sea ice variability on the Mackenzie Shelf (Beaufort Sea) and provide the infor...
chercheur principal:MacNeil, Alex Année(s) de permis:
2003
2002 Résumé:
The purpose of this study (2003 component) is to examine the fossilized types of corals that are found in the regional geological formations. Locally these corals coalesced to form mini-reefs, with interesting ecological characteristics. From the study...