Paper: Environmental uncertainty, autocorrelation and the evolution of survival
- From: "Robert Karl Stonjek" <rstonjek@xxxxxxxxxxxxxx>
- Date: Sun, 15 Jul 2007 19:12:22 -0400 (EDT)
Environmental uncertainty, autocorrelation and the evolution of survival
IssueVolume 274, Number 1622 / September 07, 2007
Pages2153-2160
Article TypeResearch-Article
DOI10.1098/rspb.2007.0561
Authors
C.J.E. Metcalf, D.N. Koons
Abstract
Survival is a key fitness component and the evolution of age- and
stage-specific patterns in survival is a central question in evolutionary
biology. In variable environments, favouring chances of survival at the
expense of other fitness components could increase fitness by spreading risk
across uncertain conditions, especially if environmental conditions improve
in the future. Both the magnitude of environmental variation and temporal
autocorrelation in the environment might therefore affect the evolution of
survival patterns. Despite this, the influence of temporal autocorrelation
on the evolution of survival patterns has not been addressed. Here, we use a
trade-off structure which reflects the empirically inspired paradigm of
acquisition and allocation of resources to investigate how the
evolutionarily stable survival probability is shaped in variable,
density-dependent environments. We show that temporal autocorrelation is
likely to be an important aspect of environmental variability that
contributes to shaping age- and stage-specific patterns of survival
probabilities in nature.
Source: The Royal Society
http://www.journals.royalsoc.ac.uk/content/a1127732tr4936g4/
Posted by
Robert Karl Stonjek
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