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

LIST OF TABLES

Table Page
1 Location, depth, and sediment type of the
Lake Michigan benthos stations... o,..... o. 7
2 Monthly occurrence of brooding (B) and spent (S)
female Pontoporeia affinis in Lake Michigan for 1965.. 25
3 Monthly occurrence of brooding (B) and spent (S)
female Pontoporeia affinis in Lake Michigan for 1966.
4 The relationships that exist between Pontoporeia
affinis and the physical and biological environments
of Lake Michigan as determined by correlation
analysis,.................. o. o.. 81
5 The proportion of the multiple correlation coefficient
and the coefficient of determination, expressed as a
percentage, that each statistically significant variable
contributes to the multiple regression equation of the
four depth zones in Lake Michigan......,... 83
6 The proportion of the multiple correlation coefficient
and the coefficient of determination, expressed as a
percentage, that each statistically significant variable
contributes to the multiple regression equation of all
depths combined in Lake Michigan..... o... 84
7 The relationships that exist between Pontoporeia
affinis and the physical and biological environment
as determined by correlation analysis for the stations
of the C, D, and E transect o.. o....... o 87
8 The grand geometric mean number of Pontoporeia
affinis for the three sampling seasons.......... 91
9 Spearman rank correlation coefficients indicating
the degree of association that occurred among the
patterns of seasonal abundance of Pontoporeia
affinis for the four depth zones and all depths
combined..................... 94

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