. Bulletin. Science; Natural history; Natural history. MARINE BIOLOGICAL MONITORING, PALOS VERDES, CA. 23 JOINT OUTFALL. YEAR Fig. 2. Flow of treated wastewaters and mass emissions of suspended solids discharged to the ocean off Palos Verdes, 1937 to 1992. mgd = million gallons per day; MER = mass emission rate. Upper line is the Districts' entire Joint Outfall System flow. ifomia Institute of Technology, and carried on in 1971 by the California Dept of Fish and Game, kelp were gradually reappearing along the peninsula (Wilson et al. 1978). In the rocky subtidal, economically important species
. Bulletin. Science; Natural history; Natural history. MARINE BIOLOGICAL MONITORING, PALOS VERDES, CA. 23 JOINT OUTFALL. YEAR Fig. 2. Flow of treated wastewaters and mass emissions of suspended solids discharged to the ocean off Palos Verdes, 1937 to 1992. mgd = million gallons per day; MER = mass emission rate. Upper line is the Districts' entire Joint Outfall System flow. ifomia Institute of Technology, and carried on in 1971 by the California Dept of Fish and Game, kelp were gradually reappearing along the peninsula (Wilson et al. 1978). In the rocky subtidal, economically important species such as Macro- cystis, spiny lobster, abalone, and many fish species were reduced or absent (Grigg andKiwala 1970). In the early 1970s, in the immediate vicinity of the outfalls, demersal fish were low in number of species, diversity, abundance and biomass (Meams et al. 1976; Allen 1977, 1982). Homyhead turbot, California tonguefish, plainfin midshipman and yellowchin sculpin were rare or absent, whereas white croaker, shiner perch and curlfin sole were unusually abundant. Thirty-one of 69 species collected off Palos Verdes during 1969 to 1972 trawl surveys exhibited fin erosion (SCCWRP 1973). DDT inputs to the Los Angeles County Sanitation Districts' sewer system were terminated in 1971 (Chartrand et al. 1985); widespread marine environmental contamination had been observed. Elevated DDT and PCB concentrations were reported for muscle tissues of Dover sole taken near the Whites Point outfall system (SCCWRP 1973). The monitored area encompasses a range of environments. The geomorphology of Palos Verdes is relatively unique for Southern California. It is a coastal prom- ontory with an exceptionally narrow (2 to 5 km) shelf: the Redondo submarine. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern Calif
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