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EMPLOYMENT

Assistant Professor (2013-present)

Department of Biological and Environmental Sciences

California University of Pennsylvania, California, Pennsylvania, U.S.A.

Postdoctoral Associate (2012-2013)

National Center for Ecological Analysis and Synthesis

University of California Santa Barbara, Santa Barbara, California, U.S.A.

Supervisor: Dr. Stephanie Hampton

FUNDING/AWARDS 

REFEREED PUBLICATIONS

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Gray, D.K., Santmyer, C., Browne, M.A. 2016. Rapid accumulation of plastic debris on southern Lake Erie beaches. Marine Pollution Bulletin. Submitted.

Izmest’eva, L.R., Moore, M.V., Hampton, S.E., Ferwerda, C.J., Gray, D.K., Woo, K., Pislegina, H.V., Krashchuk, L.S., Shimaraeva, S.V. and Silow, E.A. 2016. Lake-wide physical and biological trends associated with warming in Lake Baikal. Journal of Great Lakes Research. In press.

O'Reilly, C.M.*, Sharma, S.*, Gray, D.K.*, Hampton, S.E.* and 60 additional coauthors. 2015. Rapid and highly variable warming of lake surface waters around the globe. Geophysical Research Letters 42, DOI: http://dx.doi.org/10.1002/2015GL066235. *Joint first authors

Sharma, S.*, Gray, D. K.*, Read, J. S.*, O’Reilly, C. M.*, Schneider, P., Qudrat, A. and 60 additional coauthors. 2015. A global database of lake surface temperatures (1985-2009) collected by in situ and satellite methods. Scientific Data 2, Article number: 150008. *Joint first authors

Argent, D.G., W.G. Kimmel, D.K. Gray, B. Delenobius, and D. Drescher. 2014. Invasion of the Allegheny River by the spiny water flea (Bythotrephes longimanus). Bioinvasions Records, DOI: http://dx.doi.org/10.3391/bir.2014.3.2.06

Hampton, S.E., D.K. Gray, M.V. Moore, T. Ozersky, L.R. Izmest’eva. 2014. The rise and fall of plankton: long-term changes in the vertical distribution of algae and grazers in Lake Baikal, Siberia. PLOS ONE, DOI: 10.1371/journal.pone.0088920

Gray, D.K. and S.E. Arnott. 2012. The role of dispersal levels, Allee effects, and community resistance as zooplankton communities respond to environmental change. Journal of Applied Ecology 49: 1216–1224.

Gray, D.K., S.E. Arnott, J.A. Shead, and A.M. Derry. 2012. The recovery of acid-damaged zooplankton communities in Canadian Lakes: the relative importance of environmental variables, biotic variables, and dispersal. Freshwater Biology  57: 741-758.

Gray, D.K. and S.E. Arnott 2011. The interplay between environmental conditions and Allee effects during the recovery of stressed zooplankton communities. Ecological Applications 21: 2652-2663.  

Gray, D.K. and S.E. Arnott. 2011. Does dispersal limitation impact the recovery of zooplankton communities damaged by a regional stressor? Ecological Applications 21: 1241-1256.                                                                                                                                   
Gray, D.K. and H.J. MacIsaac. 2010. Diapausing zooplankton eggs remain viable despite exposure to open-ocean ballast water exchange: evidence from in-situ exposure experiments. Canadian Journal of Fisheries and Aquatic Sciences 67: 417-426.  

Gray, D.K, and S.E. Arnott. 2009. Recovery of acid damaged zooplankton communities: measurement, extent, and limiting factors. Environmental Reviews 17: 81-99.  

J.R. Muirhead, D.K. Gray, D.W. Kelly, S.M. Ellis, D.D. Heath and H. J. MacIsaac. 2008. Identifying the source of species invasions: sampling intensity vs. genetic diversity. Molecular Ecology 17: 1020-1035  

Bailey, S.A., D.W. Kelly, D.K. Gray, N. Kanavillil, and H.J. MacIsaac. 2008. Nonindigenous species in Lake Erie: A chronicle of established and projected aquatic invaders. Pages 579-603. In: Checking the Pulse of Lake Erie. M. Munawar and R. Heath (eds.), Aquatic Ecosystem Health and Management Society, Burlington, ON.  

Gray, D.K., T.H. Johengen, D.F. Reid and H.J. MacIsaac. 2007. Efficacy of open-ocean ballast water exchange as a means of preventing invertebrate invasions between freshwater ports. Limnology and Oceanography 52: 2386-2397  

Gray, D.K., I.C. Duggan, and H.J. MacIsaac. 2006. Can sodium hypochlorite reduce the risk of species introductions from diapausing invertebrate eggs in non-ballasted ships? Marine Pollution Bulletin 52: 689-695  

Gray, D.K., S.A. Bailey, I.C. Duggan, and H.J. MacIsaac. 2005. Viability of invertebrate diapausing eggs exposed to saltwater: implications for Great Lakes’ ship ballast management. Biological Invasions 7: 531-539  

Duggan, I.C., S.A. Bailey, R.I. Colautii, D.K. Gray, J.C. Makarewicz & H.J. MacIsaac. 2003. Biological invasions in Lake Ontario: past, present and future. Pages 541-557 in: M. Munawar (ed.) State of Lake Ontario: Past, Present and Future. Backhuys Publishers, Leiden, the Netherlands.  

Grigorovich, I.A., A.V. Korniushin, D.K. Gray, I.C. Duggan, R.I. Colautti, and H.J. MacIsaac. 2003. Lake Superior: an invasion coldspot? Hydrobiologia 499: 191-210.    

CONFERENCE PRESENTATIONS (*presenter)

Hampton, S.E.*, Izmest’eva L.R, Gray, D.K., Moore, M.V., and Ozersky, T. Implications of shifting plankton depth distribution over 45 years in Lake Baikal, Siberia. 9th Symposium for European Freshwater Sciences. Geneva, Switzerland. July 2015

Gray, D.K.*, Sharma, S., Read, J., O’Reilly, C., Schneider, P., Lenters, J., Hook, S., Dong, B., Gries, C., Hampton, S., and GLTC contributors. A global database of lake surface temperatures collected by in situ and satellite methods from 1985-2009. 58th Annual Conference on Great Lakes Research. Burlington, Vermont. May 2015.

Lenters, J.D.*, Read, J.S., Sharma, S., O’Reilly, C.M., Hampton, S., Gray, D.K., McIntyre, P.B., Hook, S.J., Schneider, P., and GLTC contributors. Global record of lake surface temperature reveal a century of warming. 58th Annual Conference on Great Lakes Research. Burlington, Vermont. May 2015.

Santmyer, C.*, and Gray, D.K. Rates of plastic accumulation on beaches along the southern shore of Lake Erie. 10th Annual Regional Science Consortium Research Symposium at the Tom Ridge Center at Presque Isle. Erie, Pennsylvania. November 2014

Gray, D.K.*, Read, J. Hook, S., Schneider, P., Lenters, J., Ruppert, J., O’Reilly, C., Sharma, S., Hampton, S. Impact of measurement frequency and data gaps on the calculation of summer-mean lake temperatures and warming trends. Joint Aquatic Sciences Meeting 2014, Portland, Oregon, May 2014.

Lenters, J.D.*, Read, J.S., Gray, D.K., Sharma, S., O’Reilly, C.M., Hook, S.J., Schneider, P., Hampton, S., McIntyre, P.B. Rapid warming of the world’s lakes from in situ and satellite-based measurements. Joint Aquatic Sciences Meeting 2014, Portland, Oregon, May 2014.

Roege, M.A.*, Gray, D.K., Argent, D.G., and Kimmel, W.G.  Documenting the diversity of zooplankton in the Allegheny River. Commonwealth of Pennsylvania University Biologists Annual Meeting. Bloomsburg, Pennsylvania, April 2014.

Gray, D.K.*, Izmest’eva, L., and Hampton. S.E. Long-term changes in the depth distribution of Lake Baikal plankton: a consequence of warming? Association for the Sciences of Limnology and Oceanography 2013 Aquatic Sciences Meeting. New Orleans, Louisiana, February 2013.

Gray, D.K.*, Linley, R.D., Yan, N.D., Keller, W., and Arnott, S.E. Using two-phased species-time relationships to separate ecological dynamics from census error in the assessment of stressed communities. 96th Annual Meeting of the Ecological Society of America. Austin, Texas, August, 2011.  

Gray, D.K.*, and Arnott, S.E. The interplay between local environmental conditions and Allee effects in determining the population growth and establishment of a zooplankton species impacted by a regional stressor. Canadian Council for Fisheries Research and the Society of Canadian Limnologists meeting. Toronto, Ontario, January 2011

Lemmen, K.D.*, Gray, D.K., and Arnott, S.E. Species turnover of Daphnia in lakes of central Ontario. Canadian Council for Fisheries Research and the Society of Canadian Limnologists meeting. Toronto, Ontario, January 2011  

Gray, D.K.*, and Arnott, S.E. Does dispersal limitation impact the recovery of zooplankton communities damaged by a regional stressor? 95th Annual Meeting of the Ecological Society of America. Pittsburgh, Pennsylvania, August 2010.  

Gray, D.K.*, and Arnott, S.E. Dispersal and local environmental conditions interact to determine the probability of reestablishment for zooplankton species impacted by a regional stressor. Canadian Society for Ecology and Evolution Conference 2010. Quebec City, Quebec, May 2010.  

Gray, D.K.*, and Arnott, S.E. The role of dispersal in the recovery of acid-damaged zooplankton communities: sources of colonists for recovering lakes and the relative importance of regional vs. local variables. Canadian Society for Ecology and Evolution Conference 2009. Halifax, Nova Scotia, May 2009.  

Gray, D.K., Johengen, T.H., Reid, D.F.* & MacIsaac, H.J. Biological effectiveness of open-ocean ballast exchange for preventing invertebrate invasions between freshwater ports. 15th International Conference on Aquatic Invasive Species. Nijmegen, The Netherlands. September 2007  

Gray, D.K., Johengen, T.H., Reid, D.F. & MacIsaac, H.J*. Can open-ocean ballast exchange prevent invasions between freshwater ports? 5th International Conference on Marine Bioinvasions. Cambridge, Massachusetts., U.S.A. May 2007  

Gray, D.K.*, van Overdijk, C.D.A., Johengen, T.H., Reid, D.F. & MacIsaac, H.J. Does open-ocean ballast exchange prevent the transfer of invertebrates between freshwater ports? 14th International Conference on Aquatic Invasive Species. Key Biscayne, Florida, U.S.A. May 2006  

Gray, D.K.*, van Overdijk, C.D.A., Johengen, T.H., Reid, D.F. & MacIsaac, H.J. Does open-ocean ballast exchange reduce the risk of future Great Lakes’ introductions from transoceanic vessels? 49th Annual Conference on Great Lakes Research. Windsor, ON, Canada. May 2006  

Gray, D.K.*, Bailey, S.A., Duggan, I.C. & MacIsaac, H.J. Viability of invertebrate diapausing eggs exposed to saltwater: implications for Great Lakes’ ship ballast management. 13th International Conference on Aquatic Invasive Species. Ennis, County Clare, Ireland. September 2004.  

Gray, D.K.*, Duggan, I.C., Bailey, S.A. & MacIsaac, H.J. Can partial ballast exchange reduce the viability of resting stages in the ballast tanks of NOBOB Ships? 46th Conference on Great Lakes Research. Chicago, Illinois, U.S.A. June 2003.