Patricia L. Blackwelder

1968   B.A. Queens College of the City University of New York. 
1970   M.S. Duke University. 
1976   Ph.D. Geology, University of South Carolina.

Students

Selected Publications

[In press]

	Alvarez Zarikian, C. A., Swart, P.K., Hood, T., Blackwelder, P., Nelsen, T.A., and Featherstone, C.  A Century of Environmental Variability in Oyster Bay Using Ostracode Ecological and Isotopic Data as Paleoenvironmental Tools; In Wardlaw, B.R., editor, Paleoecology Studies of South Florida. American Bulletin of Paleontology.
	Soter, S. Blackwelder, P.L., Tziavos, C., Katsonopoulou, D., Alvarez Zarikian, C.A., and Hood, T. Environmental analysis of cores from the Helike delta, Gulf of Corinth, Greece. Journal of Coastal Research.
	Nelsen, T.A., H. R. Wanless, J. H. Trefry, C.A. Alvarez Zarikian, T. Hood, P.L. Blackwelder, P.K. Swart, L. Tedesco, W-J. Kang, S. Metz, J. Garte, C. Featherstone, C. Souch, J. F. Pachut, M. O'Neal, and G. Ellis. Linkages between the South Florida peninsula and coastal zone: A sediment-based history of natural and anthropogenic influences.

2000

	Alvarez Zarikian, C. A., Blackwelder, P. L., Hood, T., Nelsen, T.A., and Featherstone, C. Ostracodes as indicators of natural and anthropogenically-induced changes in coastal marine ecosystems. Proceedings of The 2000 Coastal Society Conference, Portland, Oregon, pp. 896-905.
	Hood, T., Alvarez Zarikian, C. A., Blackwelder, P. L., Nelsen, T.A. and Featherstone, C. Identifying multiple stressors in the coastal ocean: the role of microfauna in discriminating between natural and anthropogenic influences. Proceedings of The 2000 Coastal Society Conference, Portland, Oregon, pp. 697-704.

1996

	Levinson H.S., Mahler, I., Blackwelder, P.L., Hood, T. Lead resistance and sensitivity in Staphilococcus aureus. FEMS Microbiology Letters, 145:421-425
	Blackwelder, P., Hood, T., Alvarez Zarikian, C. A., Nelsen, T. A. and McKee, B.  Benthic foraminifera from the NECOP study area impacted by the Mississippi River plume and seasonal hypoxia. Quaternary International, vol. 31, pp. 19-36.

1995

Nelsen, T. A., Blackwelder, P., Hood, T., Alvarez Zarikian, C. A., Trefry, J. and Metz, S., Eadie, B. and McKee, B. Retrospective analysis of NECOP area sediments: biogenic, inorganic and organic indicators of anthropogenic influences since the turn of the century. Pp. 90-101. In: Nutrient Enhanced Coastal Ocean Productivity, Proceedings of 1994 Synthesis Workshop, Baton Rouge, Louisiana.

1994

	Nelsen, T. A., Blackwelder, P., Hood, T., McKee, B., Romer, N., Alvarez Zarikian, C. A. and Metz, S.  Time-based correlation of biogenic, lithogenic and authigenic sediment components with anthropogenic inputs in the Gulf of Mexico NECOP study area. Estuaries, vol. 17, pp. 873-885.
	Nelsen, T. A., Blackwelder, P., Hood, T., Alvarez Zarikian, C. A., Trefry, J. and Metz, S. The sedimentary record in the NECOP study area: A history of anthropogenic impact. EOS, 75:51.

1992

	Robbins, L. and Blackwelder, P.L. Biochemical and ultrastructural evidence for the origin of Whitings: a biologicallly-induced calcium carbonate precipitation mechanism. Geology. Vol. 20, 464-468.
	Takahashi, K. and Blackwelder P.L., THe spatial distribution of silicoflagellates in the region of the Gulf stream warm- core ring 82B: Application to water mass tracer studies. Deep-Sea Research, 39: No. S1A, 327-346.

1991 

Walsh, P.J., Blackwelder P.L., Gill K.A., Danulat, E. and Mommsen T.P., Carbonate Production in the Intestine of a Marine Fish: A new Source of Carbonate Sediment, Limnol. and Oceanog. 36: 6, 1227-1232.

1989

Rai, V., Pardo, R., Blackwelder, P. and Falonga, V., Leg ulcers following subcutaneous injection of liquid silicon, Ark Amer. Derm., June 1989.

1988

Blackwelder, P.L. and Hooker,S./B., Summaries of data of a geologically significant subset from warm core rings and the Western North Atlantic, Report # 86-1, 109pp., Nova Oceanographic Center, Dania, FL 33004.

1986 

Dudley, W., Blackwelder P.L., Brand L. and Duplessey, J.C., Stable isotopic composition of coccoliths, Marine Micropaleontology, 10: 1-8.

1982 

	Tangen, K., Brand, L., Blackwelder, P.L., and Guillard, R.R.L. Thoracospaera hemii is a dinoflagelate. Taxonomic affinity and division cycle. Marine Micropaleontolgy, 7:193-212.
	Blackwelder, P.L. Phytoplankton on the Gulf Stream warm core rings. EOS, Nov. 1982.

1980 

	Dudley, W., Duplessey, J.C., Blackwelder, P.L., Brand, L., Guillard, R. Coccoliths in Pleistocene-Holocene nannofossils assemblages. Nature. 285:222-223.
	Watabe, N. and Blackwelder, P.L. Ultrastructure and calcium localization in the mantle epithelium of freshwater gastropod Pomacea paludosa during shell regeneration. In: Mechanisms of biomineralization in animals and plants. Omori and N. Watabe (eds) Tokai University Press, Tokyo, 131-134.

1970

Blackwelder, P.L. Electron microscopy of quartz from the eastern United States and Scotland continental margins. M.A. Thesis, Duke University, 1973 pp.

Presentations

with

Abstracts

2000

• Alvarez Zarikian, C.A., Blackwelder, P.L., Hood, T., Soter, S. and Katsonopoulou, D. 2000. Environmental Evidence from Helike Bore Holes derived from Micropaleontological Data. 3rd International Coference on Ancient Helike and Aigialeia, Nikolaiika, Greece.  

• Alvarez Zarikian, C. A., Blackwelder, P. L., Hood, T., Nelsen, T.A., and Featherstone, C. 2000. Ostracodes as indicators of natural and anthropogenically-induced changes in coastal marine ecosystems. Proceedings of The 2000 Coastal Society Conference, Portland, Oregon. 

1999

• Alvarez Zarikian, C. A., Blackwelder, P. L., Hood, T., Swart, P. K., Nelsen,T.A., and Featherstone, C. 1999. A century of hydrological variability in the lower Everglades National Park as interpreted from stable isotopes on ostracods and foraminifers. 1999 Florida Bay and Adjacent Marine Systems Science Conference; November 1-5, 1999, Key Largo, FL.

• Alvarez Zarikian, C. A., Hood, T., Blackwelder, P. L., Swart, P. K., Nelsen,T., Wanless, H., Trefry, J., Kang, W-J. 1999. Paleoecological significance of temporal variations in assemblages and isotopic composition of ostracoda and foraminifera from the lower Everglades / Florida Bay ecosystem. 1999 AGU Spring Meeting, Boston, Massachussets. 

1998

• Hood, T., Alvarez Zarikian, C. A., Blackwelder, P., Swart, P., Nelsen,T., Wanless, H., Trefry, J., Kang, W-J., Tedesco, L., O'Neal, M. 1998. The sediment record as a monitor of natural and anthropogenic changes in the lower Everglades/Florida Bay ecosystem. 1998 Florida Bay Science Conference. 

• Ellis, G., Swart, P., Lutz, M., Alvarez Zarikian, C. A., Hood, T., Blackwelder, P., Nelsen,T., Wanless, H., Trefry, J. 1998. The stable isotopic composition of foraminifera, ostracoda, and organic material from a dated core from Whitewater Bay. Abstract, 1998 Florida Bay Paleoecology Workshop. 

• Blackwelder, P., Hood, T., Alvarez Zarikian, C. A., Featherstone, C., Nelsen,T., Trefry, J., Wanless, H. 1998. Paleoecological reconstruction of Everglades/Florida Bay environments: I. Some key aspects in microfaunal interpretation. Abstract, 1998 Florida Bay Paleoecology Workshop. 

• Alvarez Zarikian, C. A., Hood, T., Blackwelder, P., Nelsen, T., Trefry, J., Wanless, H. 1998. Paleoecological reconstruction of Everglades/Florida Bay environments: II. Do total microfaunal assemblages reflect in-situ populations? Abstract, 1998 Florida Bay Paleoecology Workshop.

1996

• Alvarez Zarikian, C.A., Blackwelder, P., Hood, T. 1996. Ostracod assemblages from the Louisiana inner-continental shelf: impacts of low-oxygen bottom-waters and other phisico-chemical parameters. Abstract in Eos, Transactions, American Geophysical Union, Vol. 76, No. 3. 1996 Ocean Sciences Meeting-AGU. 
• Blackwelder, P., Hood, T., Alvarez Zarikian, C. A., Nelsen, T., McKee, B. 1996.  Benthic foraminifer communities as indicators of hypoxic conditions: present distributions and historical trends from the Gulf of Mexico. Abstract in Eos, Transactions, American Geophysical Union, Vol. 76, No. 3, January 16,  1996 Ocean Sciences Meeting-AGU. 
• Nelsen, T., Blackwelder, P., Hood, T., Alvarez Zarikian, C. A., McKee, B. 1996.  Man's diachronic influence on the marine environment: linking continents with the coastal ocean. Abstract in Eos, Transactions, American Geophysical Union, Vol. 76, No. 3, January 16, 1996. Ocean Sciences Meeting-AGU. 
• Blackwelder, P., Swart, P., Alvarez Zarikian, C. A., Hood, T., Zetwo, M. 1996.  The sediment record as a monitor of natural and anthropogenic changes in the lower Everglades/Florida Bay ecosystem: microfaunal and stable isotopes, Abstract, 1996 Florida Bay Science Conference, Key Largo.