16 record(s) found with the tag "biogeochemistry" (multi-year projects are grouped):
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Investigating the susceptibility of drilling mud sumps to permafrost thaw - ThinIce
Principal Investigator: Langer, Moritz
Licensed Year(s): 2024
Summary: This licence has been issued for the scientific research application No. 5833. This research aims to describe permafrost conditions and assess environmental risk at several drilling waste sumps in the Mackenzie Delta region, NWT. The objectives of this project are: 1) Assess the vulnerability of drilling mud sumps in the Mackenzie Delta region under varying site conditions and different clim...


Fluxes from Land to Ocean: How Coastal Habitats in the Arctic Respond (FLO CHAR)
Principal Investigator: Juhls, Bennet
Licensed Year(s): 2024 2023
Summary: This licence has been issued for the scientific research application No. 5841. The overall objective of this project is to determine the impact of changing land-ocean matter fluxes and coastal subsea permafrost on nearshore ecosystems and biodiversity in the Beaufort Sea. To reveal the trajectory of coastal habitats, it is critical to (1) determine how fluvial and coastal fluxes from the land...


Detecting Upriver Climate Change Effects in the Mackenzie River (DUCCEM)
Principal Investigator: Juhls, Bennet
Licensed Year(s): 2024
Summary: This licence has been issued for the scientific research application No. 5751. The project aims to directly observe seasonally strongly variable organic carbon concentrations and chemistry of the Mackenzie River and thus its fluxes to Arctic coastal waters. We aim for weekly observations of Mackenzie River biogeochemistry resolving the major phases of the hydrological year (winter under-ice flo...


Capitalizing on long-term experimental manipulations to understand and predict arctic terrestrial ecosystem responses to climate warming
Principal Investigator: Grogan, Paul
Licensed Year(s): 2024 2023 2022 2021 2019
Summary: This licence has been issued for the scientific research application No. 5660. The objectives of this research project are: 1) To determine the biogeochemical and ecological significance of the discovery that mesic tundra plant growth can be co-limited by nitrogen and phosphorus. 2) To predict the likely impacts of not just climate change, but also declining caribou and other mammalian herbivor...


Detecting Upriver Climate Change Effects in the Mackenzie River (DUCCEM)
Principal Investigator: Juhls, Bennet
Licensed Year(s): 2023
Summary: This licence has been issued for the scientific research application No.5542. The proposed project aims to directly observe seasonally strongly variable organic carbon concentrations and chemistry of the Mackenzie River and thus its fluxes to Arctic coastal waters. The research team aim for weekly observations of Mackenzie River biogeochemistry during a period covering the major phases of the h...


Permafrost carbon fluxes
Principal Investigator: Pumpanen, Jukka S
Licensed Year(s): 2019
Summary: The field work in Trail Valley Creek and Inuvik aims to study: 1) how catchment characteristics, such as vegetation and soil properties, control the amount and quality of aquatic dissolved organic matter (DOM) and its microbial degradability, and 2) how these factors further regulate greenhouse gas fluxes (carbon dioxide CO2, methane CH4, nitrous oxide N2O) from Arctic lakes. At the Dempster hi...


Biogeochemical controls on the structure and functioning of low arctic ecosystems
Principal Investigator: Grogan, Paul
Licensed Year(s): 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008
Summary: 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...


ARCTICFIRE
Principal Investigator: Pumpanen, Jukka S
Licensed Year(s): 2018 2015
Summary: The aim of the ARCTICFIRE project is to study the long term effects of natural forest fires on the decomposition of soil organic matter in the northern arctic and subarctic forests. The research team will study the changes in size and quality of soil carbon and nitrogen pools and fluxes after forest fires and their underlying processes in the arctic and subarctic zone, especially the interactions ...


Waste rock studies at a diamond mine site
Principal Investigator: Blowes, David W.
Licensed Year(s): 2014 2013 2012 2011 2010 2009 2008 2005
Summary: This research study is designed to investigate the processes related to water quality and quantity (collected at different scales) draining from country rock stockpiles that are located in areas of continuous permafrost. The quality of water draining from a country rock stockpile is determined by the combined effects of oxygen transport in the air phase, biogeochemical processes that control miner...


ArcticNet: an Integrated Regional Impact Study of the Coastal Western Canadian Arctic.
Principal Investigator: Fortier, Martin
Licensed Year(s): 2013 2012 2011 2010 2009 2007 2006 2005 2004
Summary: The central aim of the ArcticNet marine-based research program is to study on a long-term basis how climate induced changes are impacting the marine ecosystem, contaminant transport, biogeochemical fluxes, and exchange processes across the ocean-sea ice-atmosphere interface in the Canadian Arctic Ocean. Ultimately, the knowledge generated from this multi-year program will be integrated into regio...


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