Extinction in relation to demographic and environmental stochasticity in age-structured models
18 pages The demographic variance of an age-structured population is defined. This parameter is further split into components generated by demographic stochasticity in each vital rate. The applicability of these parameters are investigated by checking how an age-structured population process can be...
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ftunivnantes:oai:HAL:hal-00188052v1 2023-05-15T18:43:03+02:00 Extinction in relation to demographic and environmental stochasticity in age-structured models Weimerskirch, Henri Engen, Steinar Saether, Bernt-Erik Lande, Russell Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2005 https://hal.science/hal-00188052 en eng HAL CCSD Elsevier hal-00188052 https://hal.science/hal-00188052 ISSN: 0025-5564 Mathematical Biosciences https://hal.science/hal-00188052 Mathematical Biosciences, 2005, 195, pp.210-227 Demographic stochasticity Environmental stochasticity Age-structure Leslie matrix Stochastic growth rate Stochastic population models [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2005 ftunivnantes 2023-02-08T08:21:42Z 18 pages The demographic variance of an age-structured population is defined. This parameter is further split into components generated by demographic stochasticity in each vital rate. The applicability of these parameters are investigated by checking how an age-structured population process can be approximated by a diffusion with only three parameters. These are the deterministic growth rate computed from the expected projection matrix and the environmental and demographic variances. We also consider age-structured populations where the fecundity at any stage is either zero or one, and there is neither environmental stochasticity nor dependence between individual fecundity and survival. In this case the demographic variance is uniquely determined by the vital rates defining the projection matrix. The demographic variance for a long-lived bird species, the wandering albatross in the southwestern part of the Indian Ocean, is estimated. We also compute estimates of the age-specific contributions to the total demographic variance from survival, fecundity and the covariance between survival and fecundity. Article in Journal/Newspaper Wandering Albatross Université de Nantes: HAL-UNIV-NANTES Indian |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Demographic stochasticity Environmental stochasticity Age-structure Leslie matrix Stochastic growth rate Stochastic population models [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Demographic stochasticity Environmental stochasticity Age-structure Leslie matrix Stochastic growth rate Stochastic population models [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes Weimerskirch, Henri Engen, Steinar Saether, Bernt-Erik Lande, Russell Extinction in relation to demographic and environmental stochasticity in age-structured models |
topic_facet |
Demographic stochasticity Environmental stochasticity Age-structure Leslie matrix Stochastic growth rate Stochastic population models [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes |
description |
18 pages The demographic variance of an age-structured population is defined. This parameter is further split into components generated by demographic stochasticity in each vital rate. The applicability of these parameters are investigated by checking how an age-structured population process can be approximated by a diffusion with only three parameters. These are the deterministic growth rate computed from the expected projection matrix and the environmental and demographic variances. We also consider age-structured populations where the fecundity at any stage is either zero or one, and there is neither environmental stochasticity nor dependence between individual fecundity and survival. In this case the demographic variance is uniquely determined by the vital rates defining the projection matrix. The demographic variance for a long-lived bird species, the wandering albatross in the southwestern part of the Indian Ocean, is estimated. We also compute estimates of the age-specific contributions to the total demographic variance from survival, fecundity and the covariance between survival and fecundity. |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Weimerskirch, Henri Engen, Steinar Saether, Bernt-Erik Lande, Russell |
author_facet |
Weimerskirch, Henri Engen, Steinar Saether, Bernt-Erik Lande, Russell |
author_sort |
Weimerskirch, Henri |
title |
Extinction in relation to demographic and environmental stochasticity in age-structured models |
title_short |
Extinction in relation to demographic and environmental stochasticity in age-structured models |
title_full |
Extinction in relation to demographic and environmental stochasticity in age-structured models |
title_fullStr |
Extinction in relation to demographic and environmental stochasticity in age-structured models |
title_full_unstemmed |
Extinction in relation to demographic and environmental stochasticity in age-structured models |
title_sort |
extinction in relation to demographic and environmental stochasticity in age-structured models |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00188052 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Wandering Albatross |
genre_facet |
Wandering Albatross |
op_source |
ISSN: 0025-5564 Mathematical Biosciences https://hal.science/hal-00188052 Mathematical Biosciences, 2005, 195, pp.210-227 |
op_relation |
hal-00188052 https://hal.science/hal-00188052 |
_version_ |
1766232831755812864 |