Title: California fish and game
Identifier: californiafishga68_3cali (find matches)
Year: [1] (s)
Authors: California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game
Subjects: Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons
Publisher: (San Francisco, etc. ) State of California, Resources Agency, Dept. of Fish and Game
Contributing Library: California Department of Fish and Game
Digitizing Sponsor: Internet Archive

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184 CALIFORNIA FISH AND GAME at intervals along the cruise track: the upwelling period of strong northwest winds and cold, productive waters from February or March to July; the oceanic period of warm waters from August to November; and the Davidson Current period of moderately warm temperatures and extensive freshwater runoff from November to February (Bolin and Abbott 1963). During the upweiling period, temperatures were as much as 3.9°C colder west of the Bay water boundary, but during the remainder of the year temperature gradients were less extreme.
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FIGURE 1. The Gulf of the Farallones: study area for censuses between Southeast Farallon Island and the Golden Gate Bridge, San Francisco, California is marked by dotted lines; water depth in metres (2 m = approximately 1 fm). SPECIES ACCOUNTS Harbor Porpoise (Phocoena phocoena) The harbor porpoise ranges from Morro Bay, California, north to Pt. Barrow, Alaska, but is uncommon south of Monterey Bay (Norris and Prescott 1961; Leatherwood, Evans, and Rice 1972). It is considered to be a porpoise of bays and inlets although some inshore (summer) to offshore (winter) migration does occur in the northwest Atlantic (Gaskin, Arnold, and Blair 1974). It is not known if such movements take place in the northeast Pacific. Little is known of the population size or of breeding areas of California; Morejohn (1977) indicated that parturition occurs from January through July. Past reports of this species in the San Francisco Bay area are sketchy. Scam- mon (1874) reported it occasionally caught by fishermen in the Bay. More

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