Bet-hedging applications for conservation.
J Biosci
;
2002 Jul; 27(4 Suppl 2): 385-92
Artículo
en Inglés
| IMSEAR
| ID: sea-111200
ABSTRACT
One of the early tenets of conservation biology is that population viability is enhanced by maintaining multiple populations of a species. The strength of this tenet is justified by principles of bet-hedging. Management strategies that reduce variance in population size will also reduce risk of extinction. Asynchrony in population fluctuations in independent populations reduces variance in the aggregate of populations whereas environmental correlation among areas increases the risk that all populations will go extinct. We review the theoretical rationale of bet-hedging and suggest applications for conservation management of least terns in Nebraska and grizzly bears in the northern Rocky Mountains of the United States. The risk of extinction for least terns will be reduced if we can sustain the small central Platte River population in addition to the larger population on the lower Platte. Similarly, by restoring grizzly bears to the Bitterroot wilderness of Idaho and Montana can reduce the probability of extinction for grizzly bears in the Rocky Mountains of the United States by as much as 69-93%.
Texto completo:
Disponible
Índice:
IMSEAR (Asia Sudoriental)
Asunto principal:
Estaciones del Año
/
Ursidae
/
Nevada
/
Noroeste de Estados Unidos
/
Crecimiento Demográfico
/
Conservación de los Recursos Naturales
/
Altitud
/
Geografía
/
Animales
/
Modelos Teóricos
Tipo de estudio:
Estudio pronóstico
País/Región como asunto:
America del Norte
Idioma:
Inglés
Revista:
J Biosci
Año:
2002
Tipo del documento:
Artículo
Similares
MEDLINE
...
LILACS
LIS