nieuwe zoekopdracht
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina

Life‐history strategy varies with the strength of competition in a food‐limited ungulate population
Kentie, R.; Clegg, S.M.; Tuljapurkar, S.; Gaillard, J.-M.; Coulson, T. (2020). Life‐history strategy varies with the strength of competition in a food‐limited ungulate population. Ecol. Lett. 23(5): 811-820.

Bijhorende data:
In: Ecology Letters. Blackwell: Oxford. ISSN 1461-023X; e-ISSN 1461-0248, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Author keywords
    density dependence; evolution; IPM; K-selection; life history; life-history trade-offs; population dynamics; r-selection; Soay sheep; stochasticity

Auteurs  Top 
  • Kentie, R., meer
  • Clegg, S.M.
  • Tuljapurkar, S.
  • Gaillard, J.-M.
  • Coulson, T.

    Fluctuating population density in stochastic environments can contribute to maintain life‐history variation within populations via density‐dependent selection. We used individual‐based data from a population of Soay sheep to examine variation in life‐history strategies at high and low population density. We incorporated life‐history trade‐offs among survival, reproduction and body mass growth into structured population models and found support for the prediction that different life‐history strategies are optimal at low and high population densities. Shorter generation times and lower asymptotic body mass were selected for in high‐density environments even though heavier individuals had higher probabilities to survive and reproduce. In contrast, greater asymptotic body mass and longer generation times were optimal at low population density. If populations fluctuate between high density when resources are scarce, and low densities when they are abundant, the variation in density will generate fluctuating selection for different life‐history strategies, that could act to maintain life‐history variation.

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ, voor meer informatie contacteer .