José Seguinot, Betzaida Sandoz and Michelle Bonkosky. Legal Aspects of Geographical Information Systems and the Sustainable Development of Puerto Rico:, XI Iberoamerican Geographical Information Systems Conference, Buenos Aires, Argentina, 2007.

Bonkosky, M.¹, B. Sandoz¹, G. Lamendella², E.A. Hernández-Delgado³, I. Robledo⁴, J. W. Santo Domingo², and J. Norat-Ramírez¹, “Detection of Spatial Fluctuations of Fecal Pollution in Tropical Marine Waters Using Culture and PCR-based Assays”, Convención de ASM, Canada, mayo 21-25, 2007

Bonkosky, M.¹, B. Sandoz¹, G. Lamendella², E.A. Hernández-Delgado³, I. Robledo⁴, J. W. Santo Domingo², and J. Norat-Ramírez¹, “Detection of Spatial Fluctuations of Fecal Pollution in Tropical Marine Waters Using Culture and PCR-based Assays”, XXVII Foro Anual Investigación y Educación del Recinto de Ciencias Médicas, San Juan, P.R., 28-30 de marzo 2007

Edwin A. Hernández-Delgado, Betzaida Sandoz, Michelle Bonkosky, José Norat, Hernando Mattei, “Condición de los Arrecifes de Coral a través de un Gradiente de Fuentes Dispersas de Contaminación Fecal a lo Largo de la Plataforma Insular de la Región Suroeste de Puerto Rico”, Primer Simpsosio de Arrecifes de Coral de Puerto Rico del Depto de Recursos Naturales y Ambientales, San Juan, P.R., 11 de abril de 2007

M. Bonkosky¹, B. Sandoz¹, E.A. Hernández-Delgado², J.W. Santo Domingo³, I. Robledo⁴, and J. Norat-Ramírez¹,, “Detection Of Spatial And Temporal Fluctuations Of Fecal Pollution In Tropical Marine Waters Using Bacteroides PCR-Based Assays”, Oral Presentation in the Technical Sessions at the Third Latin American and Caribbean Biotechnology Congress, Mayagüez, P.R., September 21-22, 2006.

Santana-Cruz A, Santiago-Miranda D, Mansilla-Rivera I, Rodríguez-Sierra CJ. Trace metals in sportfish from Humacao Nature Reserve, Puerto Rico. Oral presentation at the “XXVII Foro Anual de Investigación y Educación del RCM”, at San Juan, Puerto Rico, March 2007.

Santana-Cruz A, Santiago-Miranda D, Mansilla-Rivera I, Rodríguez-Sierra CJ. Trace metals in sportfish from Humacao Nature Reserve, Puerto Rico. Presented at the 9^th International Symposium on Metal Ions in Biology and Medicine (ISMIBM) at Lisbon, Portugal, May 2006.

Santiago-Miranda D, Santana-Cruz A, Mansilla-Rivera I, Rodríguez-Sierra CJ. Trace metals in sediments and water of the Humacao Nature Reserve, Puerto Rico. Presented at the 9^th International Symposium on Metal Ions in Biology and Medicine (ISMIBM) at Lisbon, Portugal, May 2006.

Aldarondo-Torres JX, Mansilla-Rivera I, Rodríguez-Sierra, CJ. Trace elements in water and sediments of the Jobos Bay Area, Puerto Rico. Presented at the “Foro Anual de Investigacióny Educación del RCM”, at San Juan, Puerto Rico, March 2005.

Salgado-Ramírez CA, Mansilla-Rivera I, Rodríguez-Sierra CJ. Metal distribution in Scomberomorus spp. and Lutjanus spp. from Jobos Bay National Estuarine Research Reserve, Puerto Rico. Presented at the “Foro Anual de Investigacióny Educación del RCM”, at San Juan, Puerto Rico, March 2005.

Fernández, M. & Negrón Martínez, E. Applications of Geographic Information Systems (GIS) for the identification of pollution sources near public schools in Ponce, Puerto Rico. Presented at the XXV Annual Research & Education Forum, Medical Sciences Campus, U.P.R. San Juan, PR, 2005.

Salgado CA, Mansilla-Rivera I, Rodríguez-Sierra CJ. Metal distribution in fish from Jobos Bay National Estuarine Research Reserve, Puerto Rico. Presented at the Fourth World Congress and 25^th Annual Meeting of the Society of Environmental Toxicology and Chemistry (SETAC) at Portland, Oregon, November 2004.

Aldarondo JX, Mansilla-Rivera I, Rodríguez-Sierra CJ. Trace metals in sediment and water of Jobos Bay National Estuarine Research Reserve, Puerto Rico. Presented at the Fourth World Congress and 25^th Annual Meeting of the Society of Environmental Toxicology and Chemistry (SETAC) at Portland, Oregon, November 2004.

Acevedo-Marín LA, Mansilla-Rivera I, Jiménez BD, Rodríguez-Sierra CJ. Assessment of metal from edible fish in coastal waters of Vieques, Puerto Rico. Presented at the 2^nd Puerto Rican Conference of Public Health at San Juan, Puerto Rico, September 2004.

Aldarondo JX, Mansilla-Rivera I, Rodríguez-Sierra CJ. Determination of heavy metal concentrations in water and sediment samples of an estuarine system in Puerto Rico. Presented at the 2^nd Puerto Rican Conference of Public Health at San Juan, Puerto Rico, September 2004.

Mansilla-Rivera I, Moreno V, Derieux JC, Vázquez KD, Sánchez EE, Pérez CM, Rodríguez-Sierra CJ. Biormarkers of exposure to lead and arsenic in residents of a metal-contaminated former landfill in Vega Baja, Puerto Rico. Presented at the 2^nd Puerto Rican Conference of Public Health at San Juan, Puerto Rico, September 2004.

Salgado-Ramírez CA, Mansilla-Rivera I, Rodríguez-Sierra CJ. Distribution of metals in sport fish tissues of an estuarine research reserve in Puerto Rico. Presented at the 2^nd Puerto Rican Conference of Public Health at San Juan, Puerto Rico, September 2004.

Acevedo-Marín LA, Mansilla-Rivera I, Jiménez BD, Rodríguez-Sierra CJ. Estimating risk for heavy metal ingestión from fish in Vieques-Puerto Rico. Presented at the 8^th Symposium on Metal Ions in Biology and Medicine (ISMIBM) at Budapest, Hungary, May 2004.

Maldonado GN, Acevedo-Marín LA, Mansilla-Rivera I, Rodríguez-Sierra CJ. Trace metals in edible fish muscle in a Puerto Rico estuary. Presented at the 8^th Symposium on Metal Ions in Biology and Medicine (ISMIBM) at Budapest, Hungary, May 2004.

Moreno-Santini V, Vázquez-Rosa K, Mansilla-Rivera I, Rodríguez-Sierra CJ. Determination of hair/urinary arsenic and lead levels of people living on a former landfill in Puerto Rico. Presented at the 8^th Symposium on Metal Ions in Biology and Medicine (ISMIBM) at Budapest, Hungary, May 2004.

Reyes, M.; Negrón, E. & Pérez, C.  Comparison of bacterial endotoxin measurement and heterotrophic plate count for microbial assessment of house and imported drinking water.  Presented at  the 104th General Meeting of the American Society for Microbiology, New Orleans, Louisiana, 2004.

Acevedo-Marín L.A., Mansilla-Rivera I., Rodríguez-Sierra C.J., Jiménez B. Trace metals in edible fish from Vieques-Puerto Rico. Presented at the 7^TH International Symposium on Metal Ions in Biology and Medicine at St. Petersburg-Russia, May 2002.

Derieux J.C., Mansilla-Rivera I., Sánchez-Nazario E.E., Rodríguez-Sierra C.J. Environmental and blood–lead associations among children living in a former municipal waste site in Vega Baja-Puerto Rico Presented at the 7^TH International Symposium on Metal Ions in Biology and Medicine at St. Petersburg-Russia, May 2002.

Kientz K., Jiménez B., Pérez L., Rodríguez-Sierra C.J. In-vitro bioaccessibility of metals in soils from a former landfill in Puerto Rico. Presented at the 7^TH International Symposium on Metal Ions in Biology and Medicine at St. Petersburg-Russia, May 2002.

Sánchez-Nazario E.E., Mansilla-Rivera I., Derieux J.C., Pérez L., Rodríguez-Sierra C.J. Environmental dust and blood lead levels in children living on a metal-contaminated former landfill in Puerto Rico. Presented at the 7^TH International Symposium on Metal Ions in Biology and Medicine at St. Petersburg-Russia, May 2002.

González-Crespo S., Jiménez B., Hernández N., Mansilla-Rivera I., Rodríguez-Sierra C.J.  Mutagenicity of fine airbone particulate matter (PM2.5) from urban and rural Puerto Rico.  Presented at the 22^nd Annual Meeting of the Society of Environmental Toxicology and Chemistry (SETAC) at Baltimore, Maryland, November 2001.

Torres M.I., Jiménez B., Mansilla-Rivera I., Rodríguez-Sierra C.J.  Comparison of three air particulate matter extraction methods using mammalian submitochondrial particles (SMP) and Vibrio fischeri (Microtox) toxicity assays.  Presented at the 22^nd Annual Meeting of the Society of Environmental Toxicology and Chemistry (SETAC) at Baltimore, Maryland, November 2001.

Kientz, K., Pérez L., Jiménez, B., CJ Rodríguez-Sierra.  Bioaccessibility of metal-contaminated tropical soil and sediment. Presented at the 21th Annual  Meeting of the Society of Environmental Toxicology and Chemistry (SETAC) at Nashville, Tennessee, November 2000.

Nazario, J.; Negrón, E., & Arias, W. Microbiological and Physical-Chemical Parameters of  Water Quality in San Jose Lagoon. Presented at the Research & Education Forum XXI of the Medical Sciences Campus, University of Puerto Rico, 2000.