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f 



ECOLOGICAL CROSS SECTION OF THE MISSISSIPPI 



241 



SO U R I 1 







ILLINOIS 









Bluff 



Lowland 



River 



Lowland 



Bl 



uff 



Upland 



15 



16 



17 



5 



18 



19 



11 



12 



12 



20 



1 

 1 



21 



22 



1 



23 

 1 



26 



25 



14 



11 12 



12 11 18 24 



16 15 



14' 



12 



7 



6 





















1 

 1 







1 



l^'r 



Jl 













1 















1 









1 





1 







2 



1 



X 

 3 









Fr 

 Fr 



Ag 

 S 





 D 





X 



X 





1 



1 

 1 





^ 



1 







+ ± 





± 







± 



1 





1 





4 









Fr 



± 



± 



Jl 



s 



1 



1 



lb 





± 



1 



1 



1 







1 





1 





i 











1 



5 









Fr 



S 









1 



1 









1 



1 



1 

 1 







1 

 1 

 1 





1 





1 









1 



1 



6 









X 



X 



Fr 



Ag 







1 



1 

 1 





1 





f 







1 



1 

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1 



1 





1 

 1 







X 



1 



7 



X 





Fr 



Ag 



X 





1 

 1 









1 



X 





1 

 1 





X 





1 



1 

 1 



i 



X 



1 



X X 









8 







Fr 



X 



X 



X 



X 



iJl 



N 



X 







1 





X 





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1 















1 



! 



9 



X 









Fr 



Je 



s 



1 







1 



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1 



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1 

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10 

 11 

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Fr 

 Fr 



± 

 X 

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± 

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Fr 



Ag 



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1 



1 

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13 ± 



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14 









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Fr 



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15 





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16 









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1 

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17 









Fr 



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18 

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Fr 

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lb 

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My 



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S 









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t 













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20 





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21 



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X 







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22 

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1 



1 







Fr 

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Ag 

 Fr 



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Ag 



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X 



1 



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± 





















24 





1 





Fr 



S 



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± 











* 



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+ 









25 

 26 

 27 



28 



i 



lb 





Fr 



± 

 Fr 

 Fr 



My 



Fr 



Jl 

 Jl 



Je 



Ag 

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± 



1 



s 



1 



4- 



* 

 * 



■ 



-h 

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4c 





1 



1 



I 



X 



X 

 X 



X 







1 







1 









29 

 30 

 31 

 32 

 33 

 34 



35 









Fr 



Fr 



Fr 

 Fr 

 Fr 

 Fr 

 Fr 



My 



Ag 

 Ag 



Ag 



S 



s 



s 



Je 



S 



s 

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X 



X 

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1 



1 







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X 





1 



1 

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X 

 X 



\ 



1 





X 



X 

 X 

 X 



1 



X 





1 



+ 





X 



X 













1 

 1 



36 

 37 









Fr 



Fr, 



Jl 



Ag 



Ag 

 X 



N 



1 



1 



X 





+ 





+ , 



1 



X 













1 



1 



1 



1 



w 









1 

 1 





38 









1 



Fr 



X 



Ag 



s 



























X 





1 





X 







X 



39 







1 



Fr 



X 



S 



N 



X 













i 



X 











X 



X 





i 

 j 











40 

 41 









Fr 

 Fr 



Jl 



s 



N 



X 



o 



X 





' 1 



X 





X 











X 





X 



X 



X 





r 



X 









X 



42 







Fr 



Jl 



o 



X 



X 



X 



X 





X 



X 















X 



X 





1 











43 



1 







Fr 



Ag 



N 



X 





X 



X 





! 



































44 1 





Fr 



S 



X 





X 











X 

































45 







Fr 



Ag 



3 ' 



± 











1 



















1 









* 









46 





Fr * 



* 



* 



* 



* 



s 



N 



* 











* 





* 



♦ 











* 











47 







* 



Fr fS 



* 



N 















* 



♦ 



« 





db 







± 





t 











48 

 49 









Fr 



Fr 



S 



s 



N 



o 









* 



± 







± 







^J^^ 



















50 









Fr 



1 



AgS 





















* 



* 





f 







* 











51 









* * 



*h 



Fr 



Je 









* 



* 



\ 



