Browsing by Author "Martínez, Gustavo A."

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Contributions of Sewage effluents to Nutrients, Discharge, and DOC in Streams in Puerto Rico

Figueroa-Nieves, Débora; McDowell, William H.; Ortiz-Zayas, Jorge R.; Martínez, Gustavo A. (External Scientific Advisory Committe, 2009-11)

Some waste water treatment plants(WWTP) in Puerto Rico continuously discharge their effluents directly to streams. With urbanization, generation of sewage effluents increases and fluvial export of nutrients are expected ...
Effectiveness of grass filter strips for runoff nutrient and sediment reduction in diary sludge-amended pastures

Sotomayor Ramírez, David; Martínez, Gustavo A.; Ramírez Avila, John; Más, Edwin (2009-10-20)
Influence of season and stocking rate on pasture herbage availability and milk yield

Ruíz, Teodoro M.; Torres Meléndez, Carlos; Sotomayor Ramírez, David; Martínez, Gustavo A. (2010-05-05)
Microbiological Surface-water Quality of the Río Grande de Añasco Watershed, Puerto Rico

Sotomayor-Ramírez, David; Alameda, Myrna; Martínez, Gustavo A.; Pérez-Alegría, Luis; Corvera-Gomringer, Ronald (Caribbean Journal of Science, Vol. 42, No. 2, 151-163, 2006, 2006-12)

Sediments and the persistence of fecal and streptococcal indicator bacteria in surface waters have been identified as the main water-quality impairments in Puerto Rico. Identification of temporal variations in bacterial ...