Appendix E: Field Scientist Report 



Contamination:: Industrial effluents 



Atalaya (1 1/17/91): Atalaya is located about 60 km to the southeast of Hudson; approximate 



travel time was 1:30 h. Three duplicate samples (Corbiculafluminea) were collected at this 



location 



Contamination:: Industrial effluents 



Punta Piedras/Punta Indios (11/19/91). Sampling in these locations, less than 20 km apart, 



was attempted because they are located in the fresh water- sea water mixing zone (Rib de la Plata - 



Atlantic Ocean). The most external site, Punta Piedras, is located 175 km (southeast) from Buenos 



Aires. Sample collection at any of these sites was not possible because strong winds kept the 



water level to high for sampling. Local sources, however, indicated that bivalves were not present 



in the area because of very soft substrate. On the way back to Buenos Aires, alternative sites were 



searched but the high tide aborted a sampling attempt. 



URUGUAY 



Punta del Este (1 1/21/91). Punta del Este is located 120 km to the east of Montevideo. At this 



site, 3 stations were sampled (Mytilus platensis); two of the stations are located on the coast about 



500 meters apart. The third station is located near Gorritti Island. This last sample was obtained 



from local fishermen working in the area. 



Contamination:: Domestic effluents. Recreational boating. 



Santa Lucia (1 1/25/91). Sampling at this site was originally attempted on 1 1/21/91, but 



problems with the boat aborted the mission. This site was later sampled by Dr. Jorge Altamirano 



from the Instituto Nacional de Pesca (INEPA) who helped with the sampling and processing of the 



mussels collected in Punta del Este. Santa Lucia samples (Corbiculafluminea) were collected in 



duplicate from 1 station and sent frozen (same day delivery) to the Servicio de Hidrografia Naval 



(SHN), Buenos Aires. 



Contamination:: Industrial effluents 



ARGENTINA (cont.) 



Mar del Plata (1 1/25/91). Bivalves found along the shore were to small to be sampled. 



Duplicate samples (Mytilus platensis) were obtained from 3 stations located about 3000 meters 



offshore. The 3 offshore stations are located parallel to the coast in front of the city of Mar del 



Plata. The samples were provided by Dr. J. Delbusto from SENASA who, at the sampling time, 



was involved in red tide studies and was working with local fishermen. 



Contamination:: Domestic and industrial effluents. Navy port. 



Pehuen-co (1 1/26/91). This site and next, Arroyo Parejas, completed the sampling in the Blanca 



Bay area. Bivalves in the upper portion of the Blanca Bay were depleted possibly because of a 



large number of industries along the coast. Pehuen-co is located just outside Blanca Bay and about 



