TY  - JOUR
AU  - Stéphanie Jenouvrier, Lise Aubry
PY  - 2022//
TI  - When the going gets tough, the tough get going: Effect of extreme climate on an Antarctic seabird's life history
KW  - fixed heterogeneity frailty individual quality individual stochasticity SICs unobserved individual heterogeneity
N2  - Individuals differ in many ways. Most produce few offspring; a handful produce many. Some die early; others live to old age. It is tempting to attribute these differences in outcomes to differences in individual traits, and thus in the demographic rates experienced. However, there is more to individual variation than meets the eye of the biologist. Even among individuals sharing identical traits, life history outcomes (life expectancy and lifetime reproduction) will vary due to individual stochasticity, that is to chance. Quantifying the contributions of heterogeneity and chance is essential to understand natural variability. Interindividual differences vary across environmental conditions, hence heterogeneity and stochasticity depend on environmental conditions. We show that favourable conditions increase the contributions of individual stochasticity, and reduce the contributions of heterogeneity, to variance in demographic outcomes in a seabird population. The opposite is true under poor conditions. This result has important consequence for understanding the ecology and evolution of life history strategies.
SN  - 1461-0248
UR  - http://dx.doi.org/10.1111/ele.14076
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=8601), last updated on Mon, 01 Jul 2024 20:04:30 +0200
ID  - StephanieJenouvrier2022
ER  -