Mathematics and Society - OS X Lion Server

WRlERFigure VIII-14 - COMMERCIAL FISH CATCH: LAKE MICHIGAN100 1------------:/;=--2~~::.:=======:===~=1LAKE TROUTLAKE HERRINGSUCKERSWHITEFISH1) The increase of thetotal fish catch in1965-66 was due to anincrease catch of whatkinds of fish?YELLOW PERCHCARP"' ~ 40:>Ii'~ 30"' zo::;~ 20"SMELT1898- 1910- 1920- 1930- 1935- 1940- 1945- 1950- 1955- 1960 1961 1962 1963 1964 1965 19661909 1919 1929 1934 1939 1944 1949 1954 1959The diagram shows statistics of the commercial fish catch on Lake Michiganfrom 1898 to 1966. The degradation of the fish population is clearly evident;although the total catch returned to turn-of-the-century levels in 1966, almost allof it consisted of alewives and other low~value species.2) Fish catches were alldecreasing during whatyears?3) Find out what kinds offish are caught nearyou and how it haschanged in recent years.Graph from Patterns and Perspectives in EnvironmentalScience, National Science Board229