|Field Researcher I|
|(856) 785-0074 ext.4322|
|Haskin Shellfish Research Laboratory|
|6959 Miller Avenue|
|Port Norris, NJ 08349 USA|
B.S. 1980 University of Michigan
My present research focuses on oyster stock assessment and evaluation of oyster restoration efforts in Delaware Bay, and on deep sea and estuarine taphonomy. I am also interested in oyster disease research, and have developed and validated methods for the use of flow cytometry to investigate the morphology and function of bivalve hemocytes.
Current Research Projects
• Oyster Stock Assessment and associated Programs in Delaware Bay (NJ)- State of New Jersey
Ashton-Alcox, K.A., E.N. Powell, J.A. Hearon, C.S. Tomlin, R.M. Babb. 2013 Transplant Monitoring for the New Jersey Delaware Bay Oyster Fishery. J. Shellfish Research. 32 (2): 459-469.
Ashton-Alcox, K.A., D. Bushek, 2013. Stock Assessment Workshop New Jersey Delaware Bay Oyster Beds (15th SAW), February 11-12, 2013. Report. KA Alcox, D.Bushek, EN Powell, Eds. Haskin Shellfish Research Laboratory, Rutgers University, NJ. 133 pp.
Powell, E. N., J. M. Klinck, K. A. Alcox, E. E. Hoffmann, and J. M. Morson. 2012. The rise and fall of Crassostrea virginica oyster reefs: the role of disease and fishing in their demise and a vignette on their recovery. J. Marine Research 70: 505-558.
Powell, E. N., J. M. Morson, K. A. Alcox, and Y. Kim. 2012. Accommodation of the sex ratio in eastern oysters to variation in growth and mortality across the estuarine salinity gradient in Delaware Bay. J. Mar. Biol. Assoc. U.K., doi: 10.1017/S0022377807006861, Published online by Cambridge University Press 24 April 2012.
Powell, E.N., Staff, G.M., Callender, W.R., Ashton-Alcox, K.A., Brett, C.E., Parsons-Hubbard, K.M., Walker, S.E., Raymond, A. 2011. Taphonomic degradation of molluscan remains during thirteen years on the continental shelf and slope of the northwestern Gulf of Mexico. Palaeogeography, Palaeoclimatology, Palaeoecology, 312, 209-232.
Powell, E.N., Staff, G.M., Callender, W.R., Ashton-Alcox, K.A., Brett, C.E., Parsons-Hubbard, K.M., Walker, S.E., Raymond, A. 2011. The influence of molluscan taxon on taphofacies development over a broad range of environments of preservation: The SSETI experience. Palaeogeography, Palaeoclimatology, Palaeoecology, 312, 233-264.
Ashton-Alcox, Kathryn. 2010. Bang for the buck: shell planting in Delaware Bay. Estuary News, Winter 2010, 20(2): 5-7.
Powell, E.N., Klinck, J.M., Ashton-Alcox, K.A., Kraeuter, J.N. 2009. Multiple stable reference points in oyster populations: implications for reference point-based management. Fisheries Bulletin, 107: 133-147.
Powell, E.N., Klinck, J.M., Ashton-Alcox, K.A., Kraeuter, J.N. 2009. Multiple stable reference points in oyster populations: biological relationships for the eastern oyster (Crassostrea virginica) in Delaware Bay. Fisheries Bulletin, 107: 109-132.
Powell, E.N., Ashton-Alcox, K.A., Kraeuter, J.N., Ford, S.E., Bushek, D. 2008. Long-term trends in oyster population dynamics in Delaware Bay: Regime shifts and response to disease. J. Shellfish Research, 27(4): 729-755.
Powell, E.N., K.A. Ashton-Alcox and J.N. Kraeuter. 2007. Re-evaluation of oyster dredge efficiency in survey mode: application in stock assessment. North American Journal of Fisheries Management, 27:2, 492-511.
Cai, W.J., F.Z. Chen, E. N. Powell, S.E. Walker, K.M. Parsons-Hubbard, G.M. Staff, Y.C. Wang, K.A. Ashton-Alcox, W.R. Callender and C.E. Brett. 2006. Preferential dissolution of carbonate shells driven by petroleum seep activity in the Gulf of Mexico. Earth and Planetary Science Letters, 248, 227-243.
Powell, E.N., J.N. Kraeuter and K.A. Ashton-Alcox. 2006. How long does oyster shell last on an oyster reef? Estuarine Coastal and Shelf Science, 69, 531-542.
Powell, E.N. and K.A. Ashton-Alcox. 2004. A comparison between a suction dredge and a traditional oyster dredge in the transplantation of oysters in Delaware Bay. J. Shellfish Research, 23:3, 803-823.
Allam, B., K.A. Ashton-Alcox and S.E. Ford. 2001. Haemocyte parameters associated with resistance to brown ring disease in Ruditapes spp. clams. Developmental and Comparative Immunology, 25: 365-375.
Powell, E.N., K.A. Ashton-Alcox, S.E. Banta and A.J. Bonner. 2001. Impact of repeated dredging on a Delaware Bay oyster reef. J. Shellfish Research, 20:3, 961-975.
Ashton-Alcox, K.A., B. Allam and S.E. Ford. 2000. Application of flow cytometry to bivalve pathology IN Recent Advances in Marine Biotechnology: Volume 5, Immunobiology and Pathology. M. Fingerman, R. Nagabhushanam, and M-F. Thompson, Eds. Oxford and IBH Publishing Co., New Delhi.
Ashton-Alcox, K.A. and S.E. Ford. 1998. Variability in molluscan hemocytes: a flow cytometric study. Tissue and Cell, 30(2):195-204.
Ford, S.E. and K.A. Ashton-Alcox 1998. Altered response of oyster hemocytes to Haplosporidium nelsoni (MSX) plasmodia treated with enzymes or metabolic inhibitors. J. Invertebrate Pathology, 72:160-166.
Bushek, D., S.K. Allen, K.A. Ashton-Alcox, R. Gustafson, S.E. Ford, 1994. Dose response of the eastern oyster, Crassostrea virginica to cultured cells of Perkinsus marinus, the agent of Dermo disease. J. Shellfish Research, 13(1):313.
Ford, S.E. and K.A. Ashton-Alcox, 1993. A comparison of methods for identifying molluscan hemocytes. J. Shellfish Research 12:154.
Roman, M.R., K. A. Ashton and A. L. Gauzens. 1988. Day/night differences in the grazing impact of marine copepods. Hydrobiologia, 167/168: 21-30.