Group Publications
Published:
Phillips, C.L. Nickerson, N., Risk, D., Kayler, Z.E., Andersen, C., Mix, A., Bond, B. (2010) Soil moisture effects on the carbon isotope composition of soil respiration Rapid Communications in Mass Spectrometry 24: 1271-1280. Here.
Nickerson, N., and D. Risk. (2009) A numerical evaluation of chamber methodologies used in measuring the δ13C of soil respiration. Rapid Communications in Mass Spectrometry 23, 2802-2810. Here.
Risk, D., L. Kellman and M. Moroni. (2009) Characterization of variability and spatial patterns in tree and soil δ13C at research sites in eastern Canada. Isotopes in Environment and Health 45, 220-230. Here.
Nickerson, N., and D. Risk. (2009) Keeling plots are non-linear in non-steady state diffusive environments. Geophysical Research Letters, 36, L08401, doi:10.1029/2008GL036945. Here.
Nickerson, N., and D. Risk. (2009) Physical Controls on the Isotopic Composition of Soil Respired and CO2. Journal of Geophysical Research-Biogeosciences, 114, G01016, doi:10.1029/2008JG000844. Here.
Risk, D., Kellman, L., H. Beltrami and A. Diochon. (2008) In-situ incubations by root exclusion highlight the climatic sensitivity of soil organic matter pools. Environmental Research Letters, 3, 044004. Here.
Risk, D., Kellman, L. (2008) Isotopic Fractionation in Non-Equilibrium Diffusive Environments. Geophysical Research Letters, 35, L02403, doi:10.1029/2007GL032374. Here.
Risk, D., Kellman, L., and H. Beltrami. (2008) A new method for in-situ soil gas diffusivity measurement and applications in the monitoring of subsurface and CO2 production. Journal of Geophysical Research - Biogeosciences - doi:10.1029/2007JG000501. Here.
Kellman, L. Beltrami, H. and D. Risk. (2007) Changes in seasonal soil respiration with pasture conversion to forest in Atlantic Canada. Biogeochemistry, 10.1007/s10533-006-9056-0. Here.
Risk, D., Kellman, L., and H. Beltrami (2002). Soil and CO2 production and surface flux at four climate observatories in eastern Canada, Global Biogeochemical Cycles, 16 (4), 1122, doi:10.1029/2001GB001831. Here.
Risk, D., Kellman, L. and H. Beltrami (2002). Carbon dioxide in soil profiles: Production and temperature dependency, Geophysical Research Letters, 29 (6), 10.1029/2001GL014002. Here.
Meeting Abstracts and Presentations (past 3 years):
O'Driscoll, N.J., Canario, J., Dalziel, J., Tordon, R., Risk, D., Kellman, L. Mercury distribution and volatilization in coastal wetlands on the Minas Basin, Nova Scotia, Canada. Oral Presentation. ICMGP Conference, Guiyang, China. June 7-12, 2009.
O'Driscoll, N.J., Canario, J., Dalziel, J., Tordon, R., Risk, D., Kellman, L. Mercury distribution and volatilization in coastal wetlands on the Minas Basin, Nova Scotia, Canada. Poster Presentation. ICMGP Conference, Guiyang, China. June 7-12, 2009.
Creelman, C., McArthur, G., Risk, D., Beltrami, H., Kellman, L., Calibration and Verification of the Flux Solution Technology, American Geophysical Union, Toronto, ON, May 2009. Here.
McArthur, G., Risk, D., Nickerson, N., Beltrami, H., Kellman, L., Klapstein, S., CT-FD; A New Technique for Continuous Long-Term Measurement of CO2 Efflux, American Geophysical Union, Toronto, ON, May 2009. Here.
O'Driscoll, N.J., Canario, J., Dalziel, J., Tordon, R., Risk, D., Kellman, L. Mercury fate and biogeochemistry in coastal wetlands on the Minas Basin, Bay of Fundy. 8th Bay of Fundy Science Workshop. Oral Presentation. May 26-29, 2009. Acadia University, Wolfville, NS.
McArthur, G., Risk, D., Nickerson, N., Beltrami, H., Kellman, L., CT-FD; A New Technique for Continuous Long-Term Measurement of CO2 Efflux, European Geophysical Union General Assembly, Vienna, April 2009. Here.
Risk, D., Nickerson, N., Phillips, C., Van Pelt, A., Kellman, L., Physical Controls on the Isotopic Composition of Soil and Soil-Respired and CO2, European Geophysical Union, Vienna, Austria, April 2009. Here.
Risk, D., and Van Pelt, A. Continuous, in-situ Isotopic CO2 Measurements of Soil Respiration Using a WS-CRDS-based Analyzer, First International Greenhouse Gas Measurement Symposium of the Air and Waste Management Association, San Francisco March 22-24, 2009.+
Risk, D., Nickerson, N., Phillips, C., Van Pelt, A., Kellman, L., Physical Controls on the Isotopic Composition of Soil Respired and CO2, American Geophysical Union, San Francisco, CA, Dec 2008. Here.
McArthur, G., Risk, D., Nickerson, Beltrami, H., A new technique for continuous long-term measurement of and CO2 efflux, American Geophysical Union, San Francisco, Dec 2008. Here.
Phillips, C., Nickerson, N., Risk, D., Kayler, Z., Bond, B., Mix, A., Soil Drying Effects on the δ13C Composition of Soil Respiration, American Geophysical Union, San Francisco, Dec 2008.
Nickerson, N., Risk, D., Isotope end-member mixing models are non-linear in non-steady state diffusive environments, American Geophysical Union, San Francisco, Dec 2008.
Rahn, T., McDowell, N., Powers, H., Risk, D., Nickerson, N., Bible, K., Van Pelt, A., Rella, C., Wahl, E., Continuous, In-Situ Isotopic and CO2 Measurements of Ecosystem Exchange Processes and Soil Respiration Using a WS- CRDS-based Analyzer, American Geophysical Union, San Francisco, Dec 2008.
Rahn, T., McDowell, N., Powers, H., Risk, D., Nickerson, N., Van Pelt, A., Rella, C., Wahl, E., Continuous Isotopic and CO2 Measurements by Wavelength-Scanned Cavity Ring Down Spectroscopy: Studies of Exchange Processes in Terrestrial Ecosystems, Joint European Stable Isotope Meeting, Sept. 2008.
Rahn, T., McDowell, N., Powers, H., Risk, D., Nickerson, N., Van Pelt, A., Rella, C., Wahl, E., International Conference on Applications of Stable Isotope Techniques to Ecological Studies, Honolulu, Sept. 2008.
Nickerson, N., Risk, D. Isotopic Fractionation in Non-Steady State Diffusive Soil-Atmosphere Environments, Canadian Meteorological and Oceanographic Society Meeting, Kelowna, May 2008.
Nickerson, N., Risk, D. Carbon Capture and Storage Monitoring Technology Development at StFX, Nova Scotia Energy Research and Development Forum, Antigonish, April 2008.
Nickerson, N., Risk, D. The Isotopic Signature of Soil and CO2 Flux in Non-Steady State Environments, Atlantic Provinces Council for Sciences Meeting, Antigonish, March 2008.
Risk, D., and N. Nickerson. Soil and CO2 Emissions: Changes in effective diffusivity due to sustained winds. American Geophysical Union Meeting, San Francisco, Dec. 2007.
Risk, D., and L. Kellman. Isotopic Fractionation in Non-Equilibrium Diffusive Environments: Implications for Chamber- Based Studies of Soil Gas Fluxes, American Geophysical Union Meeting, San Francisco, Dec. 2007.
Risk, D. Kellman, L., Beltrami, H., and A. Diochon. In-Situ and Laboratory Incubations Highlight the Climatic Sensitivity of Soil Organic Matter Pools. Canadian Geophysical Union/ Canadian Meteorological Society, St. John's, May 2007.
Risk, D. Technologies for Non-Invasive Surface Gas Monitoring. Nova Scotia Environmental Industry Association Remediation Forum, Halifax, NS, March 2007.
Risk, D., Kellman, L., Moroni, M., In-Situ Measurements of Isotopic Variability in Autotrophic and Heterotrophic Soil Respiration. American Geophysical Union Meeting, San Francisco Dec. 2005.
Pitcher, A., Risk, D., Kellman, L., Ollerhead, J. and D.A. Campbell, and CH4 and and CO2 Efflux from Wetland Sediments in the Musquash Estuary, New Brunswick. Canadian Coastal Conference, 2005.
Pitcher, A., Risk, D., Kellman, L., Ollerhead, J. and D.A. Campbell, Methane and Carbon Dioxide Flux from Fresh and Tidal Sediments in the Bay of Fundy. Environmental Research Forum, Antigonish, Nova Scotia, 2005.
Risk, D. and L. Kellman, Physically-Partitioned Soil Profile Carbon Dioxide Production: High Resolution Records From Three Forest Sites. Meeting of the Geological Association of Canada, the Mineralogical Association of Canada, the Canadian Society of Petroleum Geologists and the Canadian Society of Soil Sciences, Halifax, 2005.
Risk, D., Kellman, L. and M. Black, Assessing the Potential for Isotopic Partitioning of Soil Respiration at Research Sites in Nova Scotia and Newfoundland. Meeting of the Geological Association of Canada and the Canadian Society of Soil Sciences, Halifax, 2005.
Myette, A., Kellman L., Beltrami, H. and D. Risk, A Comparison of Soil Profile and CO2 Production Dynamics Across Adjacent Intact and Clearcut Forests. Meeting of the Geological Association of Canada and the Canadian Society of Soil Sciences, Halifax, 2005.
