60°- 



50°- 



40° - 



60° 



50 = 



40° 



30° 



20° 



FIGURE 13. — Sea surface microlayer samples and 

 atmospheric particulate collections RV Trident 

 Cruise 102. Samples were analyzed for trace metals, 

 chlorinated hydrocarbons, and lipids. 



the distribution patterns and concentrations of heavy metals, chlor- 

 inated and petroleum-derived hydrocarbons, and trace elements in 

 marine organisms of several trophic levels, in sediments and in 

 water samples. 



The Gulf and Caribbean sampling program was carried out by 

 the Texas A&M RV Alaininos and Puerto Rico Nuclear Center RV 

 Pahimho (fig. 15). Types of baseline data collected were: Dissolved 

 light hydrocarbon concentrations in the surface water of the Gulf 

 and western Caribbean; trace elements (Co, Cs, Fe, Hg, Sb, Sc, U, 

 Zn) in benthos, nekton, plankton, Sargassum. sediments, and water 

 samples of the western Caribbean; Hg in Gulf waters; petroleum- 

 derived organic matter in phytoplankton, Sargassiim. teleost, water 

 samples: zooplankton: chlorinated hydrocarbons (DDT's and 

 PCB's) in Chondrichthyes, plankton, shrimp, and squid; teleosts; 

 and heavy metals in muscle tissues of a few assorted invertebrates, 

 some plankton samples, and teleosts. 



Figure 16 shows plankton sampling locations; fig. 17, fish sampl- 

 ing locations; fig. 18, locations for which Hg was measured in 

 water samples; fig. 19, locations for which Hg was measured in 

 sediments; fig. 20, Mississippi delta locations for which total Hg 

 was measured; and fig. 21, locations of zooplankton samples for 

 which the percentage compositions of hydrocarbons were measured. 



Pacific Project 



The Pacific baseline data-acquisition program is a cooperative 

 project involving the University of Alaska, Battelle Memorial In- 

 stitute, California Institute of Technology, NOAA's National Ma- 

 rine Fisheries Service, Oregon State University, Scripps Institution 

 of Oceanography, Stanford University, and University of Wash- 

 ington. 



The Scripps Institution of Oceanography RV Thomas Washing- 

 ton, on several legs of the Aries Expedition (February 27 to April 

 30 and September 3 to October 3, 1971 ), made about 50 collections 

 for chemical analysis. These collections were made only in pelagic 

 areas within the surface layers, at middepths, and at abyssal depths, 

 and consisted of several species of fish, neuston, squid, and zoo- 

 plankton. 



Aries Expedition and other cruise samples were sent to cooper- 

 ating institutions and laboratories for chemical analyses as follows: 



Institute of Marine Science, University of Alaska: Cd, Hg, and 

 Pb in Pacific fishes, benthic and pelagic invertebrates, phytoplank- 

 ton, salmon, and zooplankton. 



Battelle Northwest Laboratories: Ag, As, Cd, Cu, Cs, Hg, Ni, 

 Sb, Se, V, and Zn in biological and sediment samples. 



California Institute of Technology: Cd, Pb, and Sn in fishes, in- 

 vertebrates, plankton, and sediment water samples. 



Hopkins Marine Station, Stanford University: DDT (and meta- 

 bolites), Cd, Cr, Cu, Pb, and Zn in biological samples. 



Oregon State University: Cd, Cu, Hg, and Zn in biological and 

 sediment samples. 



University of Washington: As and Hg in biological, sediment, 

 and water samples. 



In addition to the Aries Expedition samples, other sampling pro- 

 grams for the Pacific Project are cited in the Appendix. 



75" 



70° 



65° 



FIGURE 14.— Zooplankton collections RV Knorr. 

 Cruise 19, leg 5. Concentrations of Cu, Hg and I'b 

 in zooplankton measured by Marine Sciences Insti- 

 tute, University of Connecticut. 



