Table 15. Summary of seasonal changes in water conditions and concurrent changes in fish biomass
at Mud Lake Pond and Corkscrew marsh, July 1974 to September 1975.

 Fish

 Sampling Biomass
 Period Water Conditions Date Location g/m2


early July early September


mid September late October



early December mid January


mid January late February


late February


late February -late March


2 foot depths over most
of marsh


declining water levels



1 foot depths over most
of marsh

declining water levels.


only vegetation left with
standing water is at
border of pond


generally declining
water levels


July 30-
 Sep. 3
July 9-
 Sep. 3


Oct 1


Oct 22


Dec 10


Jan 22


Feb 25


400

1200


400
1200
400
1200

300

100
300
1200

veg.
edge


0.03-0.43

0.02-0.14


0.12
0.39
1.20
0.56

1.49

9.44
1.30
0.41

13.6