| Main Title |
Landscape-Scale Effects of Toxic Events for Ecological Risk Assessment. |
| Author |
Fahrig, L. ;
Freemark, K. ;
|
| CORP Author |
Carleton Univ., Ottawa (Ontario). Dept. of Biology. ;Canadian Wildlife Service, Ottawa (Ontario).;Corvallis Environmental Research Lab., OR. |
| Publisher |
1993 |
| Year Published |
1993 |
| Report Number |
EPA/600/A-93/233; |
| Stock Number |
PB93-236628 |
| Additional Subjects |
Risk assessment ;
Terrestrial ecosystems ;
Plant ecology ;
Animal ecology ;
Environmental pollution ;
Pesticide toxicity ;
Mathematical models ;
Populations ;
Toxic substances ;
Landscapes
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB93-236628 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
26p |
| Abstract |
The effect of spatial heterogeneity on response of organisms has rarely been considered in ecological risk assessment or in ecotoxicological studies. The authors argue that ecological risk assessments for toxicants must go beyond the current practice of only assessing effects at the spatial and temporal scales of direct impact. The objectives are: (1) to extend results of the effects of landscape pattern and variability on population survival to landscape-scale effects of toxic events, (2) to develop a conceptual model of landscape-scale effects of toxic events on species, and (3) to propose a practical approach for predicting when landscape-scale effects of toxic events are likely to occur. |
