ECOLOGICAL SUCCE>-I<>\ 14! 



the former stages had done. The nature of the changes are 

 evident now when we can compare Ponds ,v and 56 with Ponds 

 "ja and 76. In ponds ja and ~l> we find water lilies and bladder- 

 wort in abundance. These are barely pn-eiit in $b and 5f. 

 Ponds 7a and 76 have much le-- bare bottom than 5 A and $c. 



! I ;il I ! ..| lli.- .||,, u -.;hi I,, 



III- 1 uitli \\.ii. [ lull <ini<l .1 



lid I"- ii' ' 

 This J-, pivM-nt in l"a\i.|-al'lr -it uatii >n- \T\ near tin- water's 



edj 



I'lir \\A\ c(imiiiiinii\ iii.ulc up ul" tin- -aim- -pcrir- as 



the oimmimilN \\illi tin- addition "I th<- Mack liiillln-.id. 



~n lack> llu- cluili Mickcr, .UK! ln-n- .is h.i^ liccii n.ucd ihc chuh 

 sucker lic.ir- tin- -. in n- rt-lati"ii t< tin- 1 \\ < > |>arts of I'ond 7 as ihc 

 pcrch does to I'.. n. 1 | 5 It is r\idt-iit that it mo\-d .nil 



ol llu- pond from \\liicli a cliamu-l of c\it lias IM-CII opt-n. 



The tirst -icp in tlu- transformation of ilu- tish comimmiiv 

 of I'oiid 14. \\hicli was ecologicall} -imilar to ih.- pn-s.-nt -/>, 

 into tin- iu-\i l.i icr . was i In- loss "i -neh ecological i \ pes as 



