Ecology of the burrowing amphipod, Pontoporeia affinis, in Lake Michigan / by Wayne Paul Alley.

Figure

Page:34 Average number of Pontoporeia affinis per square
meter obtained at each station visit versus day of
year. 9 0 0. 0 0 0... 0..a..... 0...... 0 l... 69:35 Average number of Pontoporeia affinis per square
meter pooled by one degree centigrade increments. 71
36 Average number of Pontoporeia affinis per square
meter obtained at each station visit versus bottom
temperature in degrees centigrade............ 72:37 Average number of Pontoporeia affinis per square
meter pooled by sediment type.................. 73:38 Average number of Pontoporeia affinis per square
meter obtained at each station visit versus
sediment type...................... 74:39 Average number of Pontoporeia affinis per square
meter pooled by tenths of a percent organic
carbon in the sediment................. 75
40 Average number of Pontoporeia affinis per square
meter obtained at each station visit versus
percent organic carbon in the sediment........ 76
41 Average number of Pontoporeia affinis per square
meter pooled by intervals of one mile versus
distance from shore................. 78
42 Average number of Pontoporeia affinis per square
meter obtained at each station visit versus
distance from shore....... a......... e 79

43 A comparison of the Pontoporeia affinis density of
the seven station located on the C transect, sampled
9 and 10 August 1966, and the coefficient of variation
for the combined sampling dates............
44 Patterns of seasonal abundance of Pontoporeia affinis
for the four depth zones and all depths combined...

89
90

xi