Table 2--Fishes and their numbers taken throughout the year in standard 
minnow traps* at the stations. 
Species Station 2 Station 4 Station 6 Station 7 
Aphredodernus sayanus 1 3 6 0 
Umbra Limi 14 1 2 0 
Centrarchus macropterus 0 On 0 1 
Gambusia affinis 0 0 ] 0 
Ictalwws natalis 0 0 1 0 
*The unbaited, double-ended, funnel trap, 20 inches long with apertures 
Of 1 % inches at either end, was generally impractical in the turbid 
water of the swamp. Besides the fish, several crayfishes and salamanders 
were trapped. — 
Table 3--Averaged* oxygen readings (ppm) throughout the year at the 
eight stations sampled. 
Station 1 2 3 4 5 6 7 8 
June-Sept. 4.0 2.4 3.8 0. SiG 3.0) er 02 4069-35 ;9 
Oct.-Nov. Seat e els O) ov 5.97 8,8 - 6.4 
Dec.-Feb. Srumeshces.0 0.2) 9/1, 10.1 - 8.6 
Mar. -May Sejeeent see o.00 0,0 °7.0) 27.) <= 19 
*Average of morning and evening readings on each trip and of the periods 
indicated in table. Although many of the individual readings in the 
June-September period appeared critically low, no correlation could be 
made between amount of dissolved oxygen and number of fish present. 
Table 4--Averaged* water temperatures throughout the year at the eight 
stations sampled. 
Station 1 2 3 4 5 6 7 
iriesSept. 24.2 (afk 22.0 Zico 1957 14.9 fl NB 
Oct.-Nov. 12.8 12.4. 13.8 HRS: iso 13.4 ‘ 
Dec.-Feb. 6.7 7.0 Tie 6.6 8.8 11.9 - 
Mar. -May 18.1 WS 17.7 15.4 16.9 14.4 - 
*In winter, the swamp did not freeze even at 0 degrees C because of strong 
current and amount of spring flow. In summer, swamp temperatures were not 
excessively high because of shade and spring flow, but open water temperatures 
exceeded those in swamp proper. 
i 
4h 
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