10 record(s) found with the tag "nitrogen" (multi-year projects are grouped):
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ARCTICFIRE
Principal Investigator: Pumpanen, Jukka S
Licenced Year(s): 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 ...


Controls on carbon and nutrient cycling in arctic tundra
Principal Investigator: Grogan, Paul
Licenced Year(s): 2016 2015 2014 2013 2012 2011 2010 2009 2008
Summary: The goal of this research over the next five years is to substantially advance the understanding of how Canadian arctic tundra ecosystems function, and therefore how they are likely to be affected by perturbations such as climate change, resource development and extraction, and atmospheric pollution. Specifically, the research team will focus on the impacts on vegetation due to warmer summer tempe...


Climate Change Impacts on Canadian Arctic Tundra Ecosystems: Interdisciplinary and Multi-scale Assessments
Principal Investigator: Coxson, Darwyn S
Licenced Year(s): 2008 2007
Summary: The objective of this research is to study how northern soils in close proximity (geospatially linked soils) cycle nitrogen and carbon and produce greenhouse gases. Describing these links will allow forecasting on how the soils respond to climate change. Three transects with 31 sampling locations will be set up. At each location a Time Domain Reflectometry (TDR) probe and thermocouple will be i...


Constraints To Ecosystem Development in High Arctic Polar Deserts
Principal Investigator: Bliss, Lawrence
Licenced Year(s): 1994
Summary: We seek to better understand how ecosystems develop in the high arctic following retreat of ice caps. This includes studies of soil development and the influence that rocks play in this as well as studying the development of block crusts of organisms that form on the soil surface. We will also try to understand the role these crusts play in fixing nitrogen and influencing the development of flower...


Environmental Physiology of Marine Invertebrates
Principal Investigator: Graham, Mark
Licenced Year(s): 1992
Summary: The researcher and his team will use several species of planktonic and benthic invertebrates from Lancaster Sound region to evaluate the metabolic cost of making a living in the Arctic. Oxygen consumption techniques will be used as a metabolic indicy. Trophic status of specimens will be evaluated later by stable isotope analysis....


To Study Control of Metabolic Rates in Arctic Plants
Principal Investigator: Cummins, W. Raymond
Licenced Year(s): 1991 1990 1989
Summary: The Researcher and team will continue to collect information about repiration rates and growth rates in Arctic plants. They will confirm that Arctic plants have low rates of nitrate reductase activity and will determine if relationships exist between rates of respiration, photosynthesis and nitrogen reduction in these plants....


Licence #2774
Principal Investigator: Lewis, Martin
Licenced Year(s): 1982
Summary: To undertake a study of the rate which some Arctic plants acquire nitrogen. Plants will be collected and analyzed for the amount of nitrogen they contain....


Licence #2673
Principal Investigator: Lewis, Martin
Licenced Year(s): 1981
Summary: To undertake a study of the rate at which some Arctic plants acquire nitrogen. Plants will be collected and analyzed for the amount of nitrogen they contain....


Licence #2617
Principal Investigator: Nosko, Peter
Licenced Year(s): 1980
Summary: To undertake a study of the nitrogen decomposition ability of a large quantity of bacteria located around the roots of High Arctic plants. This phenomenon may explain plant growth in polar desert regions....


Licence #1791
Principal Investigator: Schulten, R.
Licenced Year(s): 1974
Summary: Investigation of the role of nitrogen in the flowering plant Cerstium Alpinum....


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