||Thermal Effects on Biological Production in Nutrient Rich Ponds.
Siewaer, Horst ;
||Wisconsin Univ., Madison. Water Resources Center.
||DI-14-01-0001-1870 ;DI-14-31-0001-3050; OWRR-A-020-WIS ;OWRR-A-032-WIS; 07525,; A-020-WIS(1)
( Limnology ;
( Water pollution ;
( Nutrients ;
Aquatic plants ;
Biochemical oxygen demand ;
Temperature gradients ;
Diurnal variations ;
Thermal pollution ;
Water pollution effects(Animals) ;
Water pollution effects(Plants)
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Physical, chemical, and biological differences between two similar ponds were studied. One pond was heated to 5 C above ambient temperature, while the other served as a reference. Two hundred and fifty green sunfish, Lepomis cyanellus, were planted in each pond. The young-of-the-year grew at a higher rate in the heated pond. The heated pond permitted Chara to grow year round at an accelerated rate. It produced more oxygen during the day and lost more oxygen during the night than did the reference pond. The latter showed greater annual fluctuations of total alkalinity and conductivity. There was an indication that the synergistic effect of temperature and oxygen with an unlimited food supply will promote fish growth. (Author)
|NTIS Title Notes
||Technical completion rept..
|PUB Date Free Form
||8H; 13B; 64H; 68D
||PC A03/MF A01