English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/110670
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

The relationship between population means and variances in reproductive success: implications of life history and ecology

AutorMoreno Klemming, Juan ; Polo, Vicente ; Sanz, Juan José ; León, Ana de; Mínguez, Eduardo; Veiga, José Pablo
Palabras clavelife history
long-term studies
mean reproductive success
parental quality
variance in reproductive success
Fecha de publicación2003
EditorEvolutionary Ecology
CitaciónEvolutionary Ecology Research 5: 1223-1237 (2003)
ResumenWithin populations, individuals vary in breeding performance even under identical environmental conditions. Here, we present a model of logistic improvement in reproductive success (proportion of fledglings raised per egg laid) with environmental quality for breeders with different capacities. The mean reproductive success in our model denotes environmental quality for breeding. Our model establishes a space of potential combinations of means and variances in reproductive success. In this space, positive, negative or absent trends are possible. The literature and our own long-term studies show that life-history strategies may markedly affect the sign and shape of the relationship between mean and variance in reproductive success. Populations of long-lived birds rarely achieve a high mean reproductive success, and associations between the mean and variance of breeding success in different years tend to be positive. Conversely, populations of short-lived birds present negative mean–variance relationships with high mean reproductive success and variance in good environmental conditions approaching zero. Other factors, such as resource distribution and mating system, may also affect the variance in reproductive success and mean–variance trends. Plotting means and variances in reproductive success for different years or populations may indicate important aspects of the life history and ecology of organisms.
Versión del editorhttp://www.evolutionary-ecology.com/abstracts/v05/1571.html
Aparece en las colecciones: (MNCN) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
EER-2003.pdf199,39 kBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.