Nimick, David A., Christopher H. Gammons, and Stephen R. Parker, (2010 online) Diel Biogeochemical Processes and Their Effect on the Aqueous Chemistry of Streams: A Review, Chemical Geology, doi: 10.1016/j.chemgeo.2010.08.017.

Gammons, Christopher H., John N. Babcock, Stephen R. Parker, Simon R. Poulson, (2010 online) Diel cycling and stable isotopes of dissolved oxygen, dissolved inorganic carbon, and nitrogenous species in a stream receiving treated municipal sewage. Chemical Geology, doi: 10.1016/j.chemgeo.2010.07.006.

Parker, S. R., Gammons, C. H., Poulson, S. R., Weyer, C. L., Smith, M. G., Babcock, J. N., Oba, Y., (2010) “Diel behavior of stable isotopes (18-O & 13-C) of dissolved oxygen and dissolved inorganic carbon in Montana, USA rivers, and in a mesocosm experiment”, Chemical Geology, 269, 22-32, doi:10.1016/j.chemgeo.2009.06.016.

Parker, S. R., Poulson, S. R., Weyer, C. L., Smith, M. G., Bates, K. N., (2010) “Temporal variability in the concentration and stable carbon isotope composition of dissolved inorganic and organic carbon in streams”, Aquatic Geochemistry, 16, 61-84, DOI 10.1007/s10498-009-9068-1.

Gammons, C. H., Duaime, T. E., Poulson, S. R., Parker, S. R., (2010)  “Geochemistry and stable isotopes of acid mine drainage from abandoned underground coal mines, central Montana, USA”, Chemical Geology, 269, 100-112, doi:10.1016/j.chemgeo.2009.05.026

Parker, S. R., Gammons, C. H., Poulson, S. R., Weyer, C. L., Smith, M. G., Babcock, J. N., Oba, Y., 2009 online. “Diel behavior of stable isotopes (18-O & 13-C) of dissolved oxygen and dissolved inorganic carbon in Montana, USA rivers, and in a mesocosm experiment”, Chemical Geology, doi:10.1016/j.chemgeo.2009.06.016.

Parker, S. R., Poulson, S. R., Weyer, C. L., Smith, M. G., Bates, K. N., 2010. “Temporal variability in the concentration and stable carbon isotope composition of dissolved inorganic and organic carbon in streams”, Aquatic Geochemistry, 16, 61-84.

Gammons, C. H., Duaime, T. E., Poulson, S. R., Parker, S. R., 2009 online.  “Geochemistry and stable isotopes of acid mine drainage from abandoned underground coal mines, central Montana, USA”, Chemical Geology, doi:10.1016/j.chemgeo.2009.05.026

American Geophysical Union, San Francisco, Dec. 2009. Using dissolved oxygen and dissolved inorganic carbon stable isotopes to investigate O2 dynamics in a shallow groundwater system. Stephen Parker (presenter), Christopher Gammons, Simon Poulson.

Geological Society of America, Portland, Oct. 2009. Seasonal and spatial gradients in stable isotopes of dissolved oxygen and dissolved inorganic carbon in a floodplain aquifer. Garrett Smith (student presenter), Stephen Parker, Christopher Gammons, Simon Poulson.

Geological Society of America, Portland, Oct. 2009. Diel cycles in stable-isotope comp0ositoin of nitrate, ammonia, dissolved oxygen and dissolved inorganic carbon in a hypereutrophic stream. Gammons, Christopher, Babcock, John N., Parker, Stephen R., and Poulson, Simon.

Geological Society of America, Portland, Oct. 2009. Diel changes in the concentration and stable carbon isotope composition of dissolved inorganic and organic carbon in two Montana, USA rivers.  Stephen Parker, Garrett Smith (student presenter), Simon Poulson.

American Water Resources Association (Montana Section), Missoula, MT., Oct. 2009. Tracing Dissolved Oxygen Dynamics in the Nyack Aquifer. Garrett Smith (student presenter), Stephen Parker, Christopher Gammons, Simon Poulson.

Parker, S.R., Gammons, C. H., Pedrozo, F.L., Wood S. A., 2008. Diel changes in metal concentrations in a geogenically acidic river: Rio Agrio, Argentina. J. Volcanology & Geothermal Research, doi:10.1016/j.jvolgeores.2008.06.029

Parker, S. R. - Gammons, C.H., Nimick, D.A., Parker, S.R., Snyder, D. M., McCleskey, R.B., Amils, R., Poulson, S.R., 2008. Photoreduction fuels biogeochemical cycling of iron in Spain's acid rivers. Chemical Geology, 252, 202-213, doi.10.1016/j.chemgeo.2008.03.004.

Parker, S.R. - Gammons, C. H., Parker, S. R., Pedrozo, F. L., 2008. The Rio Agrio Basin, Argentina: A natural analog to watersheds affected by acid mine drainage. Mining Engineering, 60(4), 74-78.

Parker, S. R. - American Water Resources Association, Big Sky, MT., Oct. 2008 , Charmaine Weyer (student), Garrett Smith (student) and Stephen Parker “Temporal variability of dissolved organic carbon in the Clark Fork & Big Hole Rivers”; http://awra.org/state/montana/pdfs/2008_proceedings_screen.pdf

Parker, S. R. - American Water Resources Association, Big Sky, MT., Oct. 2008 , Garrett Smith (student), Charmaine Weyer (student), Chris Gammons and Stephen Parker , “Diel biogeochemical processes; stable isotopes variations of dissolved oxygen and inorganic carbon.”; http://awra.org/state/montana/pdfs/2008_proceedings_screen.pdf

Parker, S. R. - Goldschmidt Conference, Vancouver, British Columbia, July 2008. Parker, S. R. (presenter), Gammons, C. H., Poulson, S. R., “Diel biogeochemical processes in rivers; stable isotopes variations of dissolved oxygen and inorganic carbon”; Geochimica et Cosmochimica Acta, Volume 72, Issue 12, Supplement 1.

Parker, S. R., Gammons, C. H., Jones, C.A., 2007. Role of hydrous iron oxide formation in attenuation and diel cycling of dissolved trace metals in a stream affected by acid rock drainage, Water, Air, Soil Poll., 181, 247-2663.

Parker, S.R.—Gammons, C. H., Grant, T. M., Nimick, D.A., Parker, S.R., DeGrandpre, M. D., 2007. Diel changes in water chemistry in an arsenic-rich stream and treatment-pond system. Sci. of  the Total Env., 384, 433-451.

Parker, S. R., Gammons, C. H., Poulson, S. R., DeGrandpre, M. D., 2007. Diel changes in pH, dissolved oxygen, nutrients, trace elements, and the isotopic composition of dissolved inorganic carbon in the upper Clark Fork River, Montana, USA. Applied Geochem., 22, 1329-1343.

Parker, S.R.—Nimick, D.A., McCleskey, R. B., Gammons, C.H., Cleasby, T.H., Parker, S.R., 2007. Diel Mercury-Concentration Cycles in Streams Affected by Mining and Geothermal Discharge. Sci. of  the Total Env., 373(1), 344-355.

Parker, S. R.—Wood, S. A., Gammons, C. H., Parker, S. R., 2006. The behavior of REE in naturally and anthropogenically acidified waters. J.  Alloys Compounds 418, 161-165.

Parker, S. R., Gammons C. H., Jones C. A., Nimick D. A., 2006, in press.  Role of hydrous iron oxide formation in attenuation and diel cycling of dissolved trace metals in a stream affected by acid rock drainage. Water, Air & Soil Pollution., DOI 10.1007/s11270-006-9297-5.

Parker S.R., Gammons C.H., Snyder D., and Nimick D. A. (2006) Diel iron behavior in the hyper-acidic waters of the Rio Tinto and Rio Odiel, Andalucia, Spain. Proc. 23rd Annual Montana Water Conference, Amer. Water Resources Assoc., Polson, MT, Oct. 2006.   

Parker, S.R.—Gammons, C. H., Duaime T. E., Parker S. R., Grant T. R. and Botsford W. S. (2006) Geochemistry and hydrogeology of acid mine drainage in the Great Falls- Lewistown Coal Field, Montana. Proc. 7th International Conf. on Acid Rock Drainage, St. Louis, MO, March, 2006, p. 630-647.   

Parker, S. R., Poulson S. R., Gammons C. H., and DeGrandpre M. (2005) Biogeochemical Controls on Diel Cycling of Stable Isotopes of Dissolved O2 and Dissolved Inorganic Carbon in the Big Hole River, Montana. Environmental Science and Technology 39 (18): 7134-7140. DOI: 10.1021/es0505595.

Parker, S. R.—Wood, S. A., Gammons, C. H., Parker, S. R. (2005) The behavior of REE in naturally and anthropogenically acidified waters. , Proc. 24th Int. Conf. on Rare Earth Element Research.

Parker, S. R., Poulson S. R., and Gammons C. H. (2005) Diel cycles in stable isotopic composition of dissolved O2 and CO2 in a river due to biogeochemical processes.  Proc. 2005 meeting of the Montana Academy of Sciences, Butte, MT, April 9-10, 2005.

Parker, S. R.—Christopher H. Gammons, David A. Nimick, Stephen R. Parker, Thomas E. Cleasby. 2005.  Diel fluctuation of heavy metals in a mountain stream with acidic to neutral pH: Fisher Creek, Montana. Geochimca Cosmochemica Acta, 69(10), 2505-2516, (2005), DOI:10.1016/j.gca.2004.11.020

Parker, S. R., Poulson S. R., and Gammons C. H. (2005) Diel cycles in stable isotopes of dissolved O2 and dissolved inorganic carbon in the Big Hole River, Montana.  Geochim. Cosmochim. Acta 69 (10), Supplement 1, A758.

Parker, Stephen R., Andrea A. Stierle, Bret R. Niedens, and Donald B. Stierle, “Identification of a Phenylalanine Decarboxylase from a Yew-Associated fungus”, Intermountain Journal of Sciences, vol. 6, No. 2, pp. 95-101, (2000).