Resource allocation-based life histories: a conceptual basis for studies of ecological toxicology.
Environ Toxicol Chem
; 20(8): 1698-703, 2001 Aug.
Article
en En
| MEDLINE
| ID: mdl-11491551
ABSTRACT
Whereas ecological assessments of contaminants are concerned with populations and higher levels of organization, most mechanistic work in toxicology is directed at effects on individuals and their parts. We propose that studies based on individuals can be useful in ecological analysis of polluted systems when based on the concepts of resource allocation-based life history analysis. At the heart of the resource allocation approach is the concept of operative environments of individuals (i.e., environmental factors influencing birth, death, or migration). Contaminants can have strong influences on operative environments, modifying resource allocation strategies that reflect changes in energy assimilation and demands. By examining contaminant-induced responses of individuals from the perspective of changing operative environments, individual-based changes and population dynamics can be addressed in an ecologically rigorous manner.
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Bases de datos:
MEDLINE
Asunto principal:
Reproducción
/
Ecosistema
/
Contaminantes Ambientales
/
Longevidad
Límite:
Animals
Idioma:
En
Revista:
Environ Toxicol Chem
Año:
2001
Tipo del documento:
Article
País de afiliación:
Estados Unidos