. 



fetation -n-w, humus accumulated in tin- deeper part-, and 

 forms ecologically similar to the black ba>s, the blue ^ill, the 

 pumpkin-' :id the white crappie {Pomoxis annularis) whicli 



i- widely distributed i Forbc- and Kichaid-on. '08 . but which 

 Meek and Hildi brand f'loi record only from streams and pond- 

 which are ecologically youn.u. mu-t have ma.de their appearance, 

 il any such fi-he- wen All but one of thc-c:-pt 



were taken from the pond at Beach but chiefly from the older 

 parts. They were IK. i dearly -eparated from the other sped 

 but condition- \ d and no barriers prc-ent. \\'e \\oiild 



expect the ai i .f tin- pioneer ecological P uch 



'he pike and tin nd horse, from -uch a community. 



\Yhen the condition- in 1'ond 14 \\hich made the habitat 



r th:- la-t meiiiii>iii-d d-h community had pro-re rd 



a little InrthiT, nil /// ust //</, ntly 



:/>itdt :- 'niiK-il > the 



(>H" ;rcd 



'i as tin- blue -p. .tied -unli-h, 



the little i dub sucker, the warmouth bass, the spotted 



bullhead ami imk' mud of the deeper portions a 



ft u fishes M\ -imilar to miicl minno\\- ami tadp"|. 



I'hi- i- lh<- coiid; our 1'oml I at pn -nit a -hallou pond 



\\ith imulaiion- of huinn- in i he deeper part-, 



and much d \\ iili ml other plain-. 



In this Connection it -lloiiM IK- noted tha' \b k ami I lildebi.illd 



I" record and top mimiou [900 from 1'ond I 



M.ip II ; 'in the\ are m Imu'er found thei 



It -hoiild tl< nibend th it the part- of a pond which arc 



-itnated a- to i ||ow the accumillatioii of plain 



detritu- \\ill be lir-t to become unfa\or.ible to pioneer li-ln -. 



while the parts which are swept clean by wave action remain in a 

 d condition much longer perio<l of time. Stages in 



pond development -itch a- the prc-ciH 1'ond 1 are the most 

 coni],l( \ of all, and -.re more like the larger lake-, ^uch staj 



in a coiiiliiioii to >up|io greater di\erM't\- of ecolo-i.al 



type- than the latir - \\liile >till retaining a part of ii- 



pioiicer li-he-, 1'ond l -nppori- the forms which belong to 

 older condition- (mud minno\\ ami tadpole cat). 



