| Main Title |
Biological Models of Freshwater Communities. |
| Author |
Tau, Frieda B. ;
|
| CORP Author |
Washington Univ., Seattle. Coll. of Fisheries. |
| Year Published |
1973 |
| Report Number |
EPA-16050-DXM; 660/3-73-008,; 00925 |
| Stock Number |
PB-225 029 |
| Additional Subjects |
( Fresh water biology ;
Models) ;
( Pesticides ;
Toxicity) ;
Algae ;
Protozoa ;
Ciliata ;
Water pollution ;
Bacteria ;
Primary biological productivity ;
Luminous intensity ;
Computerized simulation ;
DDT ;
Stress(Physiology) ;
Cultures(Biology) ;
Chlorine aromatic compounds ;
Chemostats ;
Tetrahymena vorax ;
Chlamydomonas reinhardtic ;
Biphenyl/chloro ;
Eutrophication
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-225 029 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
80p |
| Abstract |
Data from continuous cultures of an alga (Chlamydomonas reinhardtii) and protozoan (Tetrahymena vorax) have been used to construct a model of algal standing crop over ranges of light intensity, dilution rate, and nutrient concentration both in the absence and presence of predation by the protozoa. The model predicts that predation can reduce algal standing crop only within certain ranges of the environmental variables. The comparative toxicities of Aroclor 1242, a polychlorinated bipheny1, and DDT, were tested on the alga and protozoan, and also on daphnids, ostracods, and guppies. (Modified author abstract) |
| Availability Notes |
Paper copy available from GPO $1.05 as stock no. EP1.23:660-73-008. |
| NTIS Title Notes |
Final rept.. |
| PUB Date Free Form |
Aug 73, |
| Category Codes |
6F; 57H; 68D |
| NTIS Prices |
PC-GPO/MF A01-NTIS |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
326568691 |
| Origin |
NTIS |
| Type |
CAT |
