2011
DOI: 10.1371/journal.pone.0020809
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Beyond R0: Demographic Models for Variability of Lifetime Reproductive Output

Abstract: The net reproductive rate measures the expected lifetime reproductive output of an individual, and plays an important role in demography, ecology, evolution, and epidemiology. Well-established methods exist to calculate it from age- or stage-classified demographic data. As an expectation, provides no information on variability; empirical measurements of lifetime reproduction universally show high levels of variability, and often positive skewness among individuals. This is often interpreted as evidence of he… Show more

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Cited by 76 publications
(166 citation statements)
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“…Individual stochasticity (Caswell 2009) is the random variation among individuals in the outcomes of applying identical vital rates. Individual stochasticity is inherent in any set of mortality and fertility rates, and given those rates, we can calculate the consequences of these stochastic events (Caswell 2009(Caswell , 2011(Caswell , 2014aCaswell and Kluge 2015). Individual stochasticity has been found to be a major contributor to variance in LRO in many species (Caswell 2011;Tuljapurkar, Steiner, and Orzack 2009;Steiner and Tuljapurkar 2012).…”
Section: Individual Stochasticity and The Sources Of Variancementioning
confidence: 99%
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“…Individual stochasticity (Caswell 2009) is the random variation among individuals in the outcomes of applying identical vital rates. Individual stochasticity is inherent in any set of mortality and fertility rates, and given those rates, we can calculate the consequences of these stochastic events (Caswell 2009(Caswell , 2011(Caswell , 2014aCaswell and Kluge 2015). Individual stochasticity has been found to be a major contributor to variance in LRO in many species (Caswell 2011;Tuljapurkar, Steiner, and Orzack 2009;Steiner and Tuljapurkar 2012).…”
Section: Individual Stochasticity and The Sources Of Variancementioning
confidence: 99%
“…The method uses a Markov chain description of the life cycle, assigns a random reward (in our case, reproduction) to each transition, and then accumulates this reward over the life cycle (Howard 1960;Caswell 2011).…”
Section: Individual Stochasticity and The Sources Of Variancementioning
confidence: 99%
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