ways connecting the sandy flatlands to the Big Cypress lead

eventually to the mangrove estuaries to the south and

southwest, or to the Everglades to the east. Some, such as

the Okaloacoochee Slough, also drain north into the

Caloosahatchee River.



 Corkscrew Marsh and Mud Lake Pond

 Figure 6 is a high altitude infrared aerial photograph

of Corkscrew Swamp, a major slough-strand system of

southwest Florida. Corkscrew Swamp is located in north

central Collier County, west-southwest of the town of

Immokalee, at the foot of the Immokalee Rise. In the

photograph, arrows point out (1) nearby Lake Trafford, (2)

the tall cypress trees at Corkscrew Swamp Sanctuary where a

Wood Stork population nests, and (3) a pond and adjacent

marsh that were the study site for quantitative sampling of

fish and aquatic invertebrate populations. The sampling

site is within 6.5 km of the Wood Stork nesting site, and

Wood Storks feed in the study pond late in the dry season.

Lake Trafford, 5.9 km east of the study site, has a surface-

water area of 599 ha and is the only large permanent body

of fresh water in southwest Florida.

 The field study site is situated in a major flow-way of

the Corkscrew strand system (Duever, 1975). Figure 7 from

Duever (1976) shows the pattern of water movement through

Corkscrew Swamp. The study site is in the approximate

center of the figure, between the two small islands.