. Bulletin. Natural history; Natural history. 402 Illinois Natural History Survey Bulletin Vol. 32. Art. 4 1976 C 1971) 1^ 1973 C 1971 C â â â¢â¢â ⢠a Fig. 4âDistribution of Nelumbo lutea within the cooling loop of Lake Sangchris. each dot representing a documented plant bed. UJ (£ a: UJ Q. UJ a: UJ I- z < UJ o UJ ffi CO 3 40- 30 20 10- 0- WARMEST LOTUS BED Y = + ^. COOLEST LOTUS BED -Y= + âIâ 20 âr 30 0 10 MEAN WATER TEMPERATURE (STATION I) Fig, 5.âLinear regressions of water temperature (C) for the warmest and coolest Nelumbo lutea beds against ambient (Station 1) w
. Bulletin. Natural history; Natural history. 402 Illinois Natural History Survey Bulletin Vol. 32. Art. 4 1976 C 1971) 1^ 1973 C 1971 C â â â¢â¢â ⢠a Fig. 4âDistribution of Nelumbo lutea within the cooling loop of Lake Sangchris. each dot representing a documented plant bed. UJ (£ a: UJ Q. UJ a: UJ I- z < UJ o UJ ffi CO 3 40- 30 20 10- 0- WARMEST LOTUS BED Y = + ^. COOLEST LOTUS BED -Y= + âIâ 20 âr 30 0 10 MEAN WATER TEMPERATURE (STATION I) Fig, 5.âLinear regressions of water temperature (C) for the warmest and coolest Nelumbo lutea beds against ambient (Station 1) water temperature. Water temperature data (Brigham 1977) showed that stations 1 and 7 were the coolest stations and both were areas devoid of lotus. Brigham's (1975) linear regressions of water temperatures at each station against that at Station 1 were used to estimate the water temperature regressions for the high and low temperature distribution limits of lotus. It was assumed that the regression lines would parallel that of the nearest water chemistry station given by Brigham. The Y intercept would then describe the relationship between water temperatures at the plant distribution limits and the water temperature at Station 1 (Fig. 5). The cold-water bed was °C warmer than ambient and the warmwater bed was warmer than the Station 1 temperature. The warmwater bed was about 2°C cooler than the discharge canal. The overall thermal regimes at the distribution limits of N. lutea are. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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