D
David Risk
Researcher at St. Francis Xavier University
Publications - 69
Citations - 1721
David Risk is an academic researcher from St. Francis Xavier University. The author has contributed to research in topics: Soil water & Soil gas. The author has an hindex of 21, co-authored 61 publications receiving 1323 citations.
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Journal ArticleDOI
Large loss of CO2 in winter observed across the northern permafrost region
Susan M. Natali,Jennifer D. Watts,Brendan M. Rogers,S. Potter,S. Ludwig,A. K. Selbmann,Patrick F. Sullivan,Benjamin W. Abbott,Kyle A. Arndt,Leah Birch,Mats P. Björkman,A. Anthony Bloom,Gerardo Celis,Torben R. Christensen,Casper T. Christiansen,Roisin Commane,Elisabeth J. Cooper,Patrick M. Crill,Claudia I. Czimczik,S. P. Davydov,Jinyang Du,Jocelyn Egan,Bo Elberling,Eugénie S. Euskirchen,Thomas Friborg,Hélène Genet,Mathias Göckede,Jordan P. Goodrich,Jordan P. Goodrich,Paul Grogan,Manuel Helbig,Manuel Helbig,Elchin Jafarov,Julie D. Jastrow,Aram Kalhori,Yongwon Kim,John S. Kimball,Lars Kutzbach,Mark J. Lara,Klaus Steenberg Larsen,Bang Yong Lee,Zhihua Liu,Michael M. Loranty,Magnus Lund,Massimo Lupascu,Nima Madani,Avni Malhotra,Roser Matamala,Jack W. McFarland,A. David McGuire,Anders Michelsen,Christina Minions,Walter C. Oechel,Walter C. Oechel,David Olefeldt,Frans-Jan W. Parmentier,Frans-Jan W. Parmentier,N. Pirk,N. Pirk,Ben Poulter,William L. Quinton,Fereidoun Rezanezhad,David Risk,Torsten Sachs,Kevin Schaefer,Niels Martin Schmidt,Edward A. G. Schuur,Philipp R. Semenchuk,Gaius R. Shaver,Oliver Sonnentag,Gregory Starr,Claire C. Treat,M. P. Waldrop,Yihui Wang,Jeffrey M. Welker,Jeffrey M. Welker,Christian Wille,Xiaofeng Xu,Zhen Zhang,Qianlai Zhuang,Donatella Zona,Donatella Zona +81 more
TL;DR: In this paper, the authors synthesize regional in situ observations of CO2 flux from Arctic and boreal soils to assess current and future winter carbon losses from the northern permafrost domain.
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Interpreting diel hysteresis between soil respiration and temperature
TL;DR: In this article, the authors used a one-dimensional soil CO2 and heat transport model based on physical first principles to demonstrate a theoretical basis for lags between surface flux and soil temperatures.
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Carbon dioxide in soil profiles: Production and temperature dependence
TL;DR: In this paper, the authors examined whether soil respiration might be assessed using soil profile CO 2 production inferred from soil CO 2 concentration profiles over the 9-month study period, and observed marked similarities in the temperature response of CO2 production across four study sites of contrasting vegetation cover and land use.
Journal ArticleDOI
Increased wintertime CO2 loss as a result of sustained tundra warming
Elizabeth E. Webb,Edward A. G. Schuur,Susan M. Natali,Kiva L. Oken,Rosvel Bracho,John Krapek,David Risk,Nick Nickerson +7 more
TL;DR: In this paper, the authors present nonsummer season (NSS) CO2 flux data from the Carbon in Permafrost Experimental Heating Research project, an ecosystem warming experiment of moist acidic tussock tundra in interior Alaska.
Journal ArticleDOI
Mobile measurement of methane emissions from natural gas developments in northeastern British Columbia, Canada
Emmaline Atherton,David Risk,Chelsea Fougère,Martin Lavoie,Alex Marshall,John Werring,Jim Williams,Christina Minions +7 more
TL;DR: In this article, the authors conducted a survey campaign on public roads dissecting oil and gas infrastructure, such as well pads and processing facilities, to estimate the number of emission sources.