Communications at Conferences | Papers | Publications | Videos
Communications at Conferences
*indicates presenter if not first author
*Northern Scientific Training Program student grant recipients in bold
Laforest, B.J., Hébert, J., Penn, A., Obbard, M.E., Thiemann, G.W. Collaborative Mapping of Polar Bears in James Bay: Towards the Integration of Traditional Ecological Knowledge and Science. Environmental Studies Association of Canada Congress. Victoria, British Columbia. June 3-5, 2013.
Abnizova, A., K. L. Young and M.J. Lafreniere. Hydrologic connectivity and dissolved organic carbon fluxes in low-gradient High Arctic wetlands, Polar Bear Pass, Bathurst Island, Canada. 19th International Northern Research Basins Symposium and Workshop, Southcentral Alaska, August 11-17, 2013.
Abnizova, A., S. Shakil and K.L. Young. Seasonal variability in hydrological and physicochemical characteristics of small water bodies across Polar Bear Pass, a High Arctic wetland, Bathurst Island, Nunavut, Canada. Poster presented at the American Geophysical Union, San Francisco, Dec. 3-7, 2012.
Miller, E.A.and K.L. Young. Differences in snowmelt patterns of a High Arctic stream valley: the challenges of inter-annual site monitoring in the North. Poster presented at the International Polar Year Meeting, Montreal, April 22-27, 2012.
Abnizova, A. and K. L. Young. Snowmelt hydrology and carbon dynamics in wetland ponds at Polar Bear Pass, Bathurst Island, Nunavut, Canada. Poster presented at the International Polar Year Meeting, Montreal, April 22-27, 2012.
K.L.Young, MJ Lafreniere, S. Lamoureux, A. Abnizova and E.A. Miller. Seasonal stream regimes and water budgets of hillslope catchments, Polar Bear Pass and Cape Bounty, Nunavut. 19th International Northern Research Basins Symposium and Workshop, Southcentral Alaska, August 11-17, 2013.
Shuman, P., Bello, R., and Tank, S. (2013, February). Spatial Distribution of Water Characteristics of Ponds in the Hudson Bay Lowlands. Poster presented at the Canadian Geophysical Union joint eastern student meeting of the Biogeosciences and Hydrology sections, Waterloo, ON.
Muhammad, Pervaiz and Richard Bello, 2013. Progress is Monitoring CO2 Exchange from Ponds in the Hudson Bay Lowland, Physical Geography Graduate Seminar Series, York University, March 8, 2013.
Delidjakova, Kristina, Richard Bello, Kaz Higuchi, 2013, Correcting for the Presence of Inhomogenous Plant Cover Through Footprint Analysis, Canadian Geophysical Union, Hydrology Division Meeting, Wildfrid Laurier University, Waterloo, Ontario, February 9, 2013, 1.
Bernauer W. (2013) “Comprehensive Land Claims Agreement and the Politics of Mineral Extraction” Conference paper presentation. Canada’s Development Model: Beyond Extraction. Carleton University (April 4, 2013)
Ontario Ecology, Ethology and Evolution Colloquium, University of Western Ontario. London, Ontario. Oral. “Quantifying fatness – measures of polar bear body condition in Western Hudson Bay.” L. Sciullo, G. Thiemann, and N. Lunn.May 2013.
40TH AGSBS Biology Symposium, York University, Toronto, Ontario. Poster. “Measuring polar bear fatness during the ice-free season: a methodological comparison.” L. Sciullo, G. Thiemann, and N. Lunn. May 2013.
Northern Studies Symposium, York University, Toronto, Ontario. Oral. “Assessing measures of body condition of polar bears (Ursus maritimus) in Western Hudson Bay.” L. Sciullo, G. Thiemann, and N. Lunn. November 2012.
L. Sciullo. Seminar, “Methods of assessing polar bear body condition in Western Hudson Bay.” York University Graduate Student Seminars, Toronto, Ontario. October 2013.
L. Sciullo. Seminar, “Polar Bears in the Arctic: Biology & Conservation” Institute of Marine and Coastal Research, Santa Marta, Colombia. June 2013.
L. Sciullo. Speaker, Polar Bear Body Composition in Western Hudson Bay, 3 Minute Thesis Competition, Finalist. York University, Toronto, Ontario. February 2013.
Medeiros AS, Luszczek CE, Haight H, Quinlan R, Wolfe BB. (upcoming). The
influence of climate and catchment processes on lakes across treeline in the western Hudson Bay region, Canada. 9th ArcticNet Annual Science Meeting. Halifax, NS; 09-13 December 2013.
Luszczek CE, Medeiros AS, Quinlan R. An examination of current and historic chironomid communities across the treeline region of south-western Hudson Bay, Canada. 11th International Workshop on Subfossil Chironomids. University of Southhampton, New Forest, UK; 10-13 June 2013.
22nd International Conference on Bear Research and Management, Provo, Utah, USA. Poster. “Variation in the Fatty Acid Composition of Polar Bears (Ursus maritimus) in the Canadian Arctic”. Galicia, M.*, Thiemann, G.W., Ferguson, S.H., Dyck, M.G., September 2013
Ontario Ecology, Ethology, and Evolution Colloquium 2013, University of Western Ontario, London, Ontario. Poster. “Variation in the fat content and fatty acid composition in polar bear (Ursus maritimus) adipose tissue in the Canadian Arctic”. Galicia, M. and Thiemann, G.W., May 2013.
Northern Studies Symposium, York University, Toronto, Ontario. Oral. “A spatial and demographic comparison in body condition of polar bears (Ursus maritimus) in the Canadian Arctic”. Galicia, M., November 2012.
Graduate Seminar Series, York University, Toronto, Ontario. Oral. “Spatial and demographic comparison of lipid content in polar bears (Ursus maritimus) in the Canadian Arctic”. Galicia, M. January 2013.
Lortie, C.J., R. Spafford, and A. Reid. 2012. Biogeographical contrasts as a tool to examine community dynamics. Department of Natural Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo.
Lortie, C.J., A. Reid, and R. Spafford. 2012. The importance of plant facilitation & invasion on patterns of arthropod diversity. The James Hutton Institute, Aberdeen, Scotland.
Lortie, C.J. and A. Reid. 2012. The geographic scope of interactions. U of Bordeaux 1, France.
Lortie, C.J. and A. Reid. 2012. Think locally, act globally: an inter- continental analysis of Silene acaulis cushion plants on other plant species. Oral paper at the ESA annual meeting, Portland.
Lortie, C.J., O. Molenda, and A. Reid. 2011. Indirect interactions with cushions and climate change in Canada. Swedish Oikos Society meeting in Tjärnö.
Lortie, C.J., A. Reid, and A. Malhorta. 2010. Alpine ecology and nurse plants. Annual alpine plant ecology symposium at Sierra Nevada Research Institute, UC Merced CA, USA.
Lortie, C.J. & M. Munshaw. 2010. Effect size estimates for plant interactions on gradients. Plant interactions and environmental gradients workshop at CSIC, Spain.
Lortie, C.J. , M. Munshaw, and A. Malhorta. 2010. The importance of indirect positive plant interactions. Ecology Department, University of São Paulo, Brazil.
Lortie, C.J.* 2009. Cushions as the new keystone species in facilitation studies. Biology Department, University of Guelph, Canada. *Datasets used from NSTP project.
Lortie, C.J., M. Munshaw, and A. Malhorta. 2009. Moss as keystone species in the Arctic of Canada. BES Special Symposium, Aberdeen, UK.
McConnell, J., T. McElroy, N. O’Neill, R. Nassar, H. Buijs, P. Rahnama, K. A. Walker, R. V. Martin, C. Sioris, L. Garand, A. Trichtchenko, M. Bergeron, B. Solheim, K. Semeniuk, Y. Chen, A. Lupu, I. McDade, J. Shan, W. Evans, D. Jones, K. Strong, P. Fogal, J. Drummond, T. Duck, A. Royer, A. Hakami, D. Degenstein, A. Bourassa, P. Bernath, C. Boone, Y. Rochon, C. McLinden, R. Menard, D. Turner, J. Kaminski, V.-H. Peuch, J. Tamminen, K. Chance, C. Clerbaux, B. Kerridge, L. Moreau, S. Lantagne, M. Roux, PCW/PHEMOS-WCA: Quasi-geostationary viewing of the Arctic and environs for Weather, Climate and Air quality, ESA ATMOS-2012, Bruges, 18-22nd June, 2012. 
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McConnell, J. C. C. Sioris, K. A. Walker, H. Buijs, L. Moreau, R. Nassar and the PHEMOS Science Team, Development of an FTS for thermal and near-infrared sounding for weather, air quality and greenhouse gas monitoring in the Arctic from highly elliptical orbits, ESA ATMOS-2012, Bruges, 18-22nd June, 2012.
McElroy, C. T., J. C. McConnell, N. O’Neill, R. Nassar, H. Buijs, P. Rahnama, K. A. Walker, R. V. Martin, C. Sioris, L. Garand, A. Trichtchenko, M. Bergeron, and the PHEMOS Science Team, PCW/PHEMOS UV-VIS Spectrometer: Air Quality from a Quasi-geostationary Orbit, ESA ATMOS-2012, Bruges, 18-22nd June, 2012.
McConnell, J. C., C. T. McElroy, C. E. Sioris, K. A. Walker, H. Buijs, P. Rahnama, A. P. Trishchenko, L. Garand, R. Nassar, R. V. Martin, M. Bergeron, N. O.Neill, and the PHEMOS Science team, PCW/PHEMOS for Arctic weather, climate, and air quality: A quasi-geostationary view of the Arctic and environs, .From Knowledge to Action, IPY, 22-27th April, Montreal, 2012.
Rahnama, P., J. C. McConnell, C. T. McElroy, C. E. Sioris, R. V. Martin, L. Garand, M. Bergeron, H. Buijs, N. T O’Neill, and the PHEMOS Team, UV-VIS Spectrometer for the PCW/PHEMOS Mission, CASI-ASTRO meeting, Quebec City, 24-26th April, 2012.
Sioris, C., J. C. McConnell, H. L. Buijs, R. Nassar, K. A. Walker and the PHEMOS Science Team, PHEMOS FTS measurements in the near-IR: remote sensing of CO2, CH4, and aerosol parameters, PHEMOS, NIR, CASI-ASTRO, Quebec City, 24-26th April, 2012.
Lantagne, S., S. H. Buijs, J. McConnell, K. A. Walker, C. T. McElroy, L. Moreau, P. Rahnama, and the PHEMOS Science Team, PHEMOS Weather, Climate and Air Quality as an essential complement to PCW: Payload Overview, CASI-ASTRO, Quebec City, 24-26th April, 2012
Walker, K.A., C. Sioris, J. C. McConnell, H. Buijs, L. Moreau, and the PHEMOS Science Team, Thermal and near-infrared sounding for weather, air quality and greenhouse gas monitoring in the Arctic from highly elliptical orbits, Geophysical Research Abstracts, 14, EGU2012-13356, 2012, EGU General Assembly, April 2012.
McConnell, J. C., N. O’Neill, C. T. McElroy, B. Solheim, H. Buijs, P. Rahnama, K. A. Walker, R. V. Martin, C. Sioris, L. Garand, A, Trichtchenko and the PHEMOS Team, PCW/PHEMOS for Arctic weather, climate and air quality: A quasi-stationary view of the Arctic and environs, AGU, San Francisco, 5-9th December, 2011. Download PDF
Papers
Climatic drivers of plant—plant interactions and diversity in alpine communities
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ALPINE BOTANY | VOL 121, Number 1, 63-70 | 11 JULY 2010 | www.springerlink.com
Zaal Kikvidze, Richard Michalet, Rob W. Brooker, Lohengrin A. Cavieres, Christopher J. Lortie, Francisco I. Pugnaire, Ragan M. Callaway
Positive interactions among alpine plants increase with stress
NATURE | VOL 417 | 20 JUNE 2002 | www.nature.com/nature
Ragan M. Callaway, R. W. Brooker, Philippe Choler, Zaal Kikvidze, Christopher J. Lortie, Richard Michalet, Leonardo Paolini, Francisco I. Pugnaire, Beth Newingham, Erik T. Aschehoug, Cristina Armas, David Kikodze & Bradley J. Cook
Publications
*Northern Scientific Training Program student grant recipients in bold
Medeiros AS, Friel C, Finkelstein S, Quinlan R. 2012. A high resolution multi-proxy record of pronounced 20th century environmental change at Baker Lake, Nunavut. Journal of Paleolimnology 47: 661-676.
Davis, Zoe, BSc Thesis, Environmental Science, Examining the Loss of Methane through Ebullition in shallow Subarctic Ponds,York University, April 2012.
Ramachandranathan, Sarmela, BA Thesis, Geography, Plant recolonization after disturbance in the Hudson Bay Lowlands, York University, April 2012.
Delidjakova, Kristina. MSc Thesis, Geography, Influence of Hudson Bay on the Carbon Dynamics of the Hudson Bay Lowlands, York University, October, 2013.
Young, K.L., J. Assini, A. Abnizova and E. Miller. 2013 Snowcover and melt characteristics of upland/lowland terrain: Polar Bear Pass, Bathurst Island, Nunavut, Canada. Hydrology Research, 44,1,2-20.
Abnizova, A., K. L. Young and M. Lafreniere. Pond hydrology and dissolved carbon dynamics at Polar Bear Pass wetland, Bathurst Island, Nunavut. Ecohydrology, in press, doi: 10.1002/eco.1323, published online Oct. 11, 2012.
Assini, J. and K.L. Young 2012. Snowcover and snowmelt of an extensive High Arctic wetland: spatial and temporal seasonal patterns. Hydrological Sciences Journal, 57, 4, 738-755.
Howell, S. E. I., J. Assini, K. L. Young, A. Abnizova and C. Derksen 2012. Snowmelt variability over Polar Bear Pass, Nunavut, Canada from QuikSCAT: 2000 to 2009. Hydrological Processes, Published online Jan. 24, 2012, doi: 10.1002/hyp.8365.
Burnauer W. 2013 Modern Treaties, Extraction and Imperialism in Canada’s Indigenous North: Two Case Studies, Studies in Political Economy. [co-authored with Peter Kulchyski] (submitted/accepted)
Sciullo, L. 2013. Tracking a ghost: polar bear research in the Canadian Arctic. Popular Undergraduate Life Science & Engineering Magazine.
Sciullo, L. 2013. Polar bear research in Churchill, Manitoba. The BirdFish Newsletter Fall 2013. Churchill Northern Studies Center.
Sciullo, L. 2013. Spotting the Great White Bear. Earth Rangers Online Article.
Schob, C., R. Michalet, L. Cavieres, F. Pugnaire, R. Brooker, B. Butterfield, B Cook, Z. Kikvidze, A. Reid, and C.J. Lortie. 2013. A global analysis of bi-directional interactions in alpine plant communities shows facilitators experiencing strong reciprocal fitness costs. New Phytologist: in press.
Cavieres, L., R. Brooker, B. Butterfield, B. Cook, Z. Kikvidze, A. Reid, and C.J. Lortie. 2013. Facilitative plant interactions and climate simultaneously drive alpine plant diversity. Ecology Letters: doi: 10.1111/ele.12217.
Michalet, R., Y. Bagousse-Pinguet, J.P. Maalouf, and C.J. Lortie*. 2013. On the two alternatives to the stress-gradient hypothesis. Journal of Vegetation Science: doi: 10.1111/jvs.12123. *Datasets used from NSTP project.
Michalet, R., C. Schob, C. Lortie*, R. Brooker, and R. Callaway. 2013. Partitioning net interactions among plants along altitudinal gradients to study community responses to climate change. Functional Ecology: doi: 10.1111/1365-2435.12136. *Datasets used from NSTP project.
Butterfield, B.J. L. Cavieres, R. Callaway, B. Cook, Z. Kikividze, C.J. Lortie*, et al. 2013. Alpine cushion plants inhibit the loss of phylogenetic diversity in severe environments. Ecology Letters 16: 478-486. *Datasets used from NSTP project.
Reid, A. and C.J. Lortie. 2012. Cushion plants are foundation species with positive effects extending to higher trophic levels. Ecospheres 3(11): 96. http://dx.doi.org/10.1890/ES12-00106.1
Lortie, C.J., A.E. Budden, and A.M. Reid. 2012. The birds and the bees: applying video observation techniques from avian behavioural ecology to invertebrate pollinators. Journal of Pollination Ecology 6: 125-128.
Lortie, C.J., and A. Reid. 2012. Gender effects of a keystone alpine plant species on other plants, pollinators, and arthropods and the reciprocal pollination effects on its reproductive success: implications for facilitation. Botany 90: 273-282.
Molenda, O., A. Reid, and C.J. Lortie. 2012. The alpine cushion plant Silene acaulis as foundation species: a plant and bug’s-eye view to facilitation and microclimate. PLOSONE 7: e37223. doi:10.1371/journal.pone.0037223.
Reid, A.M., L. Lamarque, and C.J. Lortie. 2010. A systematic review of the recent ecological literature on cushion plants: the new heavy weight champions of plant facilitation. Web Ecology 10: 44-49
Toyota, K., J. C. McConnell, A. Lupu, L. Neary, C. A. McLinden, A. Richter, R. Kwok, K. Semeniuk, J. W. Kaminski, S.-L. Gong, J. Jarosz, M.P. Chipperfield, and C. E. Sioris, Analysis of reactive bromine production and ozone depletion in the Arctic boundary layer using 3-D simulations with GEM-AQ: inference from synoptic-scale patterns, Atmos. Chem. Phys., 11, 3949-3979, doi:10.5194/acp-11-3949-2011, 2011.
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Semeniuk, K., V. I. Fomichev, J. C. McConnell, C. Fu, S. M. L. Melo, and I. G. Usoskin, Middle atmosphere response to the solar cycle in irradiance and ionizing particle precipitation, Atmos. Chem. Phys., 11, 1.33, 2011, www.atmos-chem-phys.net/11/1/2011/doi:10.5194/acp-11-1-2011. Download PDF
Zhao, T. L., S. L. Gong, J. W. Bottenheim, J. C. McConnell, R. Sander, L. Kaleschke, A. Richter , A. Kerkweg, K. Toyota and L.A. Barrie, A three dimensional model study on the production of BrO and Arctic boundary layer ozone depletion, J. Geophys. Res., 113, D24304, doi:10.1029/2008JD010631, 2008.
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Semeniuk, K., J. C. McConnell, J. J. Jin, J R. Jarosz, C. D. Boone, and P. F. Bernath, N2O production by high energy auroral electron precipitation, J. Geophys. Res., 113, D16302, doi:10.1029/2007JD009690, 2008. Download PDF
Melo, S., M. L., and 14 authors, Summertime stratospheric processes at northern mid-latitudes: Comparisons between MANTRA balloon measurements and the Canadian Middle Atmosphere Model, ACP-discussions, August, 2007. Download PDF
Jin, J.J., K. Semeniuk, G.L. Manney, A.I. Jonsson, S.R. Beagley, J.C. McConnell, C.P. Rinsland, C.D. Boone, K.A. Walker and P.F. Bernath, Denitrification in the Arctic winter 2004/2005: Observations from ACE-FTS, Geophys. Res. Lett., 33, L19814, doi:10.1029/2006GL027687, 2006. Download PDF
Jin, J. J., K. Semeniuk, A. I. Jonsson, S. R. Beagley, J. C. McConnell, G. Dufour, R. Nassar, C. D. Boone, K. A. Walker, P. F. Bernath, C. P. Rinsland, and G. L. Manney, Severe Arctic Ozone Loss in the Winter 2004/2005: Observations from ACE-FTS, Geophys. Res. Lett., 33, L15801, doi:10.1029/2006GL026752, 2006. Download PDF
Dufour, G., R. Nassar, C. D. Boone, R. Skelton, K. A. Walker, P. F. Bernath, C. P. Rinsland, K. Semeniuk, J. J. Jin, J. C. McConnell, and G. L. Manney, Partitioning between the inorganic chlorine reservoirs, HCl and ClONO2, during the Arctic winter 2005 derived from the ACE-FTS measurements, Atmos. Chem. Phys., 6, 2355-2366, 2006. Download PDF
Bazely, D. and G. Hoogensen (eds, forthcoming): Human Security in the Arctic. Hampshire, UK: EarthScan Press. Includes: Bazely, D., Christensen, J. and A. Tantenzap. Bridging the gaps between ecology and human security.
Christensen, J. 2008. Notes from the field: homeless in a homeland. The McGill Reporter. 40.18: 11.
Christensen, J. and M. Grant. 2007. Spaces of Inclusion: How political change paved the way for indigenous knowledge in the Mackenzie Valley Resource Management Act. ARCTIC: Journal of the Arctic Institute of North America 60 (2), 115-123.
Andrea L. Smith, Nina Hewitt, Nicole Klenk, Dawn R. Bazely, Norman Yan, Stepan Wood, Irene Henriques, James I. MacLellan, Carla Lipsig-Mummé.; 2012. “Effects of climate change on the distribution of invasive alien species in Canada: a knowledge synthesis of range change projections in a warming world.”
Bazely, D.R.; Henriques, I.; Hewitt, N.; Klenk, N.; MacLellan, J.I.; Lipsig-Mumme, C.; Smith, A.L.; Wood, S.; Yan, N.; 2011. “Taking stock of the Assisted Migration Debate.”
Klenk, N.; R., Dawn; Ellie Perkins, P.; April 16-17, 2009.“How will Disenfranchised Peoples Adapt to Climate Change? Strengthening the Ecojustice Movement.”Report of the First International Justice Conference.
Videos
Animation of the view from one of the Polar Communications and Weather (PCW) satellites in a TAP orbit. Courtesy of Alexander Trichtchenko, EC and NRCAN. The PCW mission will consist of two satellites operating in tandem in a highly eccentric orbit to give quasi-stationary viewing over the Arctic region for 24×7.
