. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 232 CALIFORNIA FISH AND OAME. 100 150 NUMBER OF TROUT ON CARD Figure 78. Scattergram of trout catches reported by the same individuals at different times. SUMMARY California angling catch records have been obtained from state-wide postal card surveys since 1936. They provide annual estimates of total catches, average catches, and numbers of anglers fishing for the important fresh-water and anadromous fishes. These estimates are outlin
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 232 CALIFORNIA FISH AND OAME. 100 150 NUMBER OF TROUT ON CARD Figure 78. Scattergram of trout catches reported by the same individuals at different times. SUMMARY California angling catch records have been obtained from state-wide postal card surveys since 1936. They provide annual estimates of total catches, average catches, and numbers of anglers fishing for the important fresh-water and anadromous fishes. These estimates are outlined in detail in a series of tables and charts in Part I. The county distribution of 1948 catches is also described. Standard errors and fiducial limits of the three main types of estimates obtained from the surveys are discussed in Part II. Over-all angling pressure in California has increased fivefold since 1935. Marked increases in angling have occurred for each of the fishes covered in the surveys. The average annual catch has declined appreci- ably for all but sunfish. In most cases the total annual catch has increased somewhat during this period of rapidly increasing angling pressure. A special personal interview survey was conducted in 1948 to evalu- ate the influence of postal card nonresponse upon postal card survey esti- mates. No important warping of the estimates of mean catches, numbers. 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 California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game. [San Francisco, etc. ] State of California, Resources Agency, Dept. of Fish and Game
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