Aquatic Biogeochemistry & Ecology Lab

Research:

I'm interested in aquatic ecosystem ecology and biogeochemistry, specifically, understanding the effects of changing climate and nutrient loads on aquatic ecology and biogeochemistry.  My research includes work in lakes, streams and rivers, and is a part of the Global Institute for Water Security.  

Current topics:  

  • Understanding how declining periods of ice cover will affect lake biogeochemistry and ecology
  • Characterizing the importance of aquatic ecosystems in regional and global greenhouse gas budgets
  • Assessing catchment nutrient dynamics, and the effects of changing management and changing climate
  • Understanding controls on aquatic ecosystem metabolism and drivers of variability in algal dynamics

Prospective students:

I'm always interested in hearing from strong students interested in issues related to water quality and aquatic ecology.   

Selected Publications:  

  • Baulch, H.M.  2013. Asking the right questions about nutrient control in aquatic ecosystems. Environmental Science and Technology.  47(3):1188-9. doi: 10.1021/es400134s.
  • Kavanaugh, M.T., Holtgrieve, G.W., Baulch, H., Brum, J. R., Cuvelier, M.L., Filstrup, C.T., Nickols, K.J., Small, G.E.  2013. A salty divide within ASLO?  ASLO Bulletin, 22(2): 34-37
  • Baulch, H.M. M.N. Futter, L. Jin, P.G. Whitehead, D. T. Woods, P.J. Dillon, D. A. Butterfield, S.K. Oni, L. P Aspden, E. M. O’Connor, J. Crossman.  2013. Phosphorus dynamics across intensively monitored subcatchments in the Beaver River.  Inland Waters. 3(2): 187-206. 
  • Jin, L., P.G. Whitehead, H.M. Baulch, P.J. Dillon, D.A. Butterfield, S.K. Oni, M.N. Futter, J. Crossman, E.M. O’Connor. 2013. Modelling phosphorus in Lake Simcoe and its subcatchments: scenario analysis to assess alternative management strategies. Inland Waters 3 (2), 207-220.
  • Crossman, J., M.N. Futter, S.K. Oni, P.G. Whitehead, L. Jin, D. Butterfield, H.M. Baulch, P.J. Dillon. 2013. Impacts of climate change on hydrology and water quality: Future proofing management strategies in the Lake Simcoe watershed, Canada. Journal of Great Lakes Research 39 (1), 19–32. http://dx.doi.org/10.1016/j.jglr.2012.11.003
  • Baulch, H.M. 2013.  Asking the right questions about nutrient control in aquatic ecosystems. Environmental Science and Technology.  47(3):1188-9. doi: 10.1021/es400134s
  • Whitfield, C.J., J. Aherne, and H.M. Baulch.  2011. Controls on greenhouse gas concentrations in polymictic headwater lakes in Ireland.  Science of the Total Environment 410-411: 217-225. http://dx.doi.org/10.1016/j.scitotenv.2011.09.045
  • Whitehead, P.G., L. Jin, H.M. Baulch, D.A. Butterfield, S.K. Oni, P.J. Dillon, M. Futter, A.J. Wade, R. North and E.A. O’Connor.  2011. Modelling phosphorus dynamics in multi-branch river systems: A study of the Black River, Lake Simcoe Canada.  Science of the Total Environment 412-413:315-323. doi:10.1016/j.scitotenv.2011.09.073
  • Baulch, H.M., E.H. Stanley, E.S. Bernhardt. 2011.  Can algal uptake stop NO3- pollution? Nature. 477. doi:10.1038/nature10418.
  • Baulch, H.M., S. Schiff, S. Thuss and P. J. Dillon. 2011. Isotopic character of N2O emitted from streams. Environmental Science and Technology 45: 4682-4688. http://pubs.acs.org/doi/abs/10.1021/es104116a
  • Baulch, H.M., P.J. Dillon, R. Maranger and S.L. Schiff. 2011. Night and day: Short-term variation in nitrogen chemistry and nitrous oxide emissions. Freshwater Biology.  (In press).
  • Baulch, H.M., S. L. Schiff, R. Maranger and P.J. Dillon.  Nitrogen enrichment and the emissions of nitrous oxide from streams.  Global Biogeochemical Cycles (in press).
  • Baulch, H.M., P.J. Dillon, R. Maranger, and S. L. Schiff.  Budgeting N2O emissions from freshwater ecosystems: Revisiting the IPCC methodology.  Canadian Journal of Fisheries and Aquatic Sciences (accepted).
  • Baulch, H.M., P.J. Dillon, R. Maranger and S.L. Schiff.  Diffusive and ebullitive fluxes of methane and nitrous oxide from streams: are bubble-mediated fluxes important?  Journal of Geophysical Research – Biogeosciences (in press).
  • Baulch, H.M., J. J. Venkiteswaran, P.J. Dillon and R. Maranger. 2010. Revisiting the application of open-channel estimates of denitrification. Limnology and Oceanography Methods. 8:202-215. http://www.aslo.org/lomethods/free/2010/0202.pdf
  • Baulch, H.M., M.A. Turner, D.L. Findlay, R.D. Vinebrooke, and W.F. Donahue. 2009. Benthic algal biomass – measurement approaches and measurement error. Canadian Journal of Fisheries and Aquatic Sciences. 66: 1989-2001. www.nrcresearchpress.com/doi/pdf/10.1139/F09-122
  • Turner, M.A., H.M. Baulch, S.E.M. Kasian, D.L. Findlay, R.D. Vinebrooke and D.M. McNicol. 2009. Resilience and hysteresis in benthic algal associations of a boreal shield lake recovering from acidification. Canadian Journal of Fisheries and Aquatic Sciences 66: 1875-1891. http://www.nrcresearchpress.com/doi/pdfplus/10.1139/F09-126
  • Barlow-Busch, L., H.M. Baulch, and W.D. Taylor. 2006. Phosphate uptake by seston and epilithon in the Grand River, southern Ontario. Aquatic Sciences 68: 181-192
  • Baulch, H.M., D.W. Schindler, M.A. Turner, D.L. Findlay, M.J. Paterson, and R.D Vinebrooke. 2005. Effects of temperature on benthic communities in a boreal lake: Implications of climate warming.Limnology and Oceanography 50 (5): 1377-1392.  www.aslo.org/lo/toc/vol_50/issue_5/1377.pdf
  • Reid, H., B. Pisupati, and H. Baulch. 2004. Biodiversity and climate change. Policy brief. Scidev.net. http://www.scidev.net/en/policy-briefs/how-biodiversity-and-climate-change-interact.html
  • Baulch, H.M., T.W. Nord, M.Y. Ackerman, J.D. Dale, R.R.O. Hazewinkel, D.W. Schindler and R.D. Vinebrooke. 2003. Climate warming experiments: design of a mesocosm heating system. Limnology and Oceanography Methods. 1:10-15. http://www.aslo.org/lomethods/free/2003/0010.pdf

Links:  

Global Institute for Water Security http://www.usask.ca/water
University of Saskatchewan, School of Environment and Sustainability http://www.usask.ca/sens/
University of Wisconsin, Center for Limnology http://limnology.wisc.edu/ 
Experimental Lakes Area http://umanitoba.ca/institutes/fisheries/ 
Association for the Sciences of Limnology and Oceanography http://aslo.org
Ecological Society of America http://www.esa.org/