| Main Title |
Non-autonomous Logistic Equations as Models of Populations in a Deteriorating Environment. |
| Author |
Hallam, T. G. ;
Clark, C. E. ;
|
| CORP Author |
Tennessee Univ., Knoxville.;Environmental Research Lab., Athens, GA. |
| Year Published |
1981 |
| Report Number |
EPA-R-806726; EPA-600/J-81-682; |
| Stock Number |
PB84-172410 |
| Additional Subjects |
Population growth ;
Mathematical models ;
Biostatistics ;
Ecology ;
Reprints ;
Environmental effects
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB84-172410 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
11p |
| Abstract |
The non-autonomous logistic equation is studied under conditions that include an environment which is completely deteriorating. A re-interpretation of the parameters of the logistic equation leads to an alternative logistic formulation. A biological interpretation of the parameters is presented and this equation is compared with the classical logistic model in the case where the parameters are constant. In general, the alternative formulation seems to be the more reasonable model in situations where perturbations lead to severe decreases in environmental quality and growth rates. |
| Availability Notes |
Pub. in Jnl. of Theoretical Biology, v93 n2 p303-311, 1981. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Non-autonomous Logistic Equations as Models of Populations in a Deteriorating Environment. |
| PUB Date Free Form |
c1981 |
| Category Codes |
6F; 57H |
| NTIS Prices |
Not available NTIS |
| Primary Description |
600/01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
417425003 |
| Origin |
NTIS |
| Type |
CAT |
