(18) Constant P., Hallenbeck P.C. (2012) Hydrogenase. In: Pandey A., Chang J.-S., Hallenbeck P.C., Larroche C. (eds) Biohydrogen. Elsevier B.V., p 55 pages (submitted).

(17) Douglas, T., Loseto, L., Macdonald, R., Outridge, P., Dommergue, A., Poulain,  A., Amyot, M., Barkay, T., Berg, T., Chetelat, J., Constant, P., Evans, M., Ferrari, C., Gantner, N., Johnson, M., Kirk, J., Kroer, N., Larose, C., Lean, D., Muir, D., Nielsen, T., Poissant, L., Rognerud, S., Skov, H., Sorensen, S., Wang, F., Wilson, S., Zdanowicz, C. The fate of mercury in arctic terrestrial and aquatic ecosystems, a review. Environmental Chemistry, 2012, 9:321-355.

(16) Constant, P., Paul Chowdhury, S., Hesse, L., Pratsher, J., Conrad, R. (2011) Genome data mining and soil survey for the novel Group 5 [NiFe]-hydrogenase gene sequence to explore the ecological importance of high affinity H₂-oxidizing bacteria. Applied and Environmental Microbiology, 77:6027-6035. 

(15) Constant, P., Paul Chowdhury, S., Conrad, R. (2011) Colocalization of high affinity hydrogenase activity and high affinity H₂-oxidizing bacteria in soil. Soil Biology and Biochemistry. 44:1888-1893. 

(14) Douglas, T., Amyot, M., Barkay, T., Berg, T., Chételat, J., Constant, P., Dommergue, A., Evans, M., Ferrari, C., Gantner, K., Johnson, M., Kirk, J., Kroer, N., Larose, C., Lean, D., Loseto, L., Macdonald, R., Muir, D., Nielsen, T.G., Outridge, P., Poulain, A.J., Poissant, L., Rognerud, S., Skov, H., Sørensen, S., Wang, F. (2010) Chapter 3: What is the fate of mercury entering the Arctic environment? in Arctic Monitoring and Assessment Program (AMAP) - Mercury Assessment.

(13) Constant, P., Paul Chowdhury, S., Pratsher, J., Conrad, R. (2010) Streptomycetes contributing to atmospheric molecular hydrogen soil uptake are ubiquitous and are encoding for a putative high affinity [NiFe]-hydrogenase. Environmental Microbiology. 12:821–829. 

(12) Constant, P., Poissant, L., Villemur, R. (2009) Tropospheric H₂ budget and the response of its soil uptake under the changing environment. Science of the Total Environment. 407:1809–1823. 

(11) Poissant, L., Zhang, H.H., Canário, J., Constant, P. (2008) Review of mercury fates and contamination in the Arctic tundra ecosystem. Science of the Total Environment. 400:173–211. 

(10) Constant, P., Poissant, L., Villemur, R. (2008) Isolation of Streptomyces sp. PCB7, the first microorganism demonstrating high-affinity uptake of tropospheric H₂. ISME Journal. 2:1066–1076. 

(9) Constant, P., Poissant, L., Villemur, R. (2008) Annual hydrogen, carbon monoxide and carbon dioxide surface to air exchanges and concentrations in a rural area (Québec, Canada). Atmospheric Environment. 42:5090–5100. 

(8) Canário, J., Poissant, L. O’Driscoll, N., Ridal, J., Delongchamp, T., Pilote, M., Constant, P., Blais, J., Lean, D. (2008) Mercury partitioning in surface sediments of the upper St. Lawrence River (Canada): evidence of the importance of the sulphur chemistry. Water, Air and Soil Pollution. 187:219-231. 

(7) Poissant, L., Constant, P., Pilote, M., Canário, J., O'Driscoll, N., Ridal, J., Lean, D. (2007) The ebullition of hydrogen, carbon monoxide, methane, carbon dioxide and total gaseous mercury from the Cornwall Area of Concern. Science of the Total Environment. 381:256-262. 

(6) Villemur, R., Constant, P., Gauthier, A., Shareck, M., Beaudet, R. (2007) Heterogeneity between 16S ribosomal RNA gene copies borne by one Desulfitobacterium strain is caused by different 100-200 bp insertions in the 5’ region. Canadian Journal of Microbiology. 53:116-128. 

(5) Constant, P., Poissant, L., Villemur, R., Yumvihoze, E., Lean, D. (2007) Fate of inorganic mercury and methyl mercury within the snow cover in the low arctic tundra on the shore of Hudson Bay (Québec, Canada). Journal of Geophysical Research. 112, D08309, doi:10.1029/2006JD007961. 

(4) Carpenter, L.J., Hopkins, J.R., Jones, C.E., Lewis, A.C., Parthipan, R., Wevill, D.J., Poissant, L., Pilote, M., Constant, P. (2005) Abiotic source of reactive organic halogens in the sub-arctic atmosphere? Environmental Science and Technology. 39:8812-8816. 

(3) Poissant, L., Pilote, M., Beauvais, C., Constant, P., Zhang, H.H. (2005) A year of continuous measurements of three atmospheric mercury species (GEM, RGM and Hgp) in southern Québec, Canada. Atmospheric Environment. 39:1275-1287. 

(2) Constant, P., Poissant, L., Villemur, R. (2005) Impact de la variation du niveau d’eau d’un marais du lac Saint-Pierre (Québec, Canada) sur les concentrations et les flux d'hydrogène, monoxyde de carbone, méthane et dioxyde de carbone. Revue des sciences de l’eau. 18:521-539. 

(1) Poissant, L., Pilote, M., Constant, P., Beauvais, C., Zhang, H.H., Xu, X. (2004) Mercury gas exchanges over selected bare soil and flooded sites in the Bay St. François wetlands (Québec, Canada). Atmospheric Environment. 38:4205-4214.