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Transient LTRE analysis reveals the demographic and trait‐mediated processes that buffer population growth

Temporal variation in environmental conditions affects population growth directly via its impact on vital rates, and indirectly through induced variation in demographic structure and phenotypic trait distributions. We currently know very little about how these processes jointly mediate population re...

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Detalles Bibliográficos
Autores principales: Maldonado‐Chaparro, Adriana A., Blumstein, Daniel T., Armitage, Kenneth B., Childs, Dylan Z.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6849557/
https://www.ncbi.nlm.nih.gov/pubmed/30252195
http://dx.doi.org/10.1111/ele.13148
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author Maldonado‐Chaparro, Adriana A.
Blumstein, Daniel T.
Armitage, Kenneth B.
Childs, Dylan Z.
author_facet Maldonado‐Chaparro, Adriana A.
Blumstein, Daniel T.
Armitage, Kenneth B.
Childs, Dylan Z.
author_sort Maldonado‐Chaparro, Adriana A.
collection PubMed
description Temporal variation in environmental conditions affects population growth directly via its impact on vital rates, and indirectly through induced variation in demographic structure and phenotypic trait distributions. We currently know very little about how these processes jointly mediate population responses to their environment. To address this gap, we develop a general transient life table response experiment (LTRE) which partitions the contributions to population growth arising from variation in (1) survival and reproduction, (2) demographic structure, (3) trait values and (4) climatic drivers. We apply the LTRE to a population of yellow‐bellied marmots (Marmota flaviventer) to demonstrate the impact of demographic and trait‐mediated processes. Our analysis provides a new perspective on demographic buffering, which may be a more subtle phenomena than is currently assumed. The new LTRE framework presents opportunities to improve our understanding of how trait variation influences population dynamics and adaptation in stochastic environments.
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spelling pubmed-68495572019-11-15 Transient LTRE analysis reveals the demographic and trait‐mediated processes that buffer population growth Maldonado‐Chaparro, Adriana A. Blumstein, Daniel T. Armitage, Kenneth B. Childs, Dylan Z. Ecol Lett Letters Temporal variation in environmental conditions affects population growth directly via its impact on vital rates, and indirectly through induced variation in demographic structure and phenotypic trait distributions. We currently know very little about how these processes jointly mediate population responses to their environment. To address this gap, we develop a general transient life table response experiment (LTRE) which partitions the contributions to population growth arising from variation in (1) survival and reproduction, (2) demographic structure, (3) trait values and (4) climatic drivers. We apply the LTRE to a population of yellow‐bellied marmots (Marmota flaviventer) to demonstrate the impact of demographic and trait‐mediated processes. Our analysis provides a new perspective on demographic buffering, which may be a more subtle phenomena than is currently assumed. The new LTRE framework presents opportunities to improve our understanding of how trait variation influences population dynamics and adaptation in stochastic environments. John Wiley and Sons Inc. 2018-09-05 2018-11 /pmc/articles/PMC6849557/ /pubmed/30252195 http://dx.doi.org/10.1111/ele.13148 Text en © 2018 The Authors Ecology Letters published by CNRS and John Wiley & Sons Ltd This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Letters
Maldonado‐Chaparro, Adriana A.
Blumstein, Daniel T.
Armitage, Kenneth B.
Childs, Dylan Z.
Transient LTRE analysis reveals the demographic and trait‐mediated processes that buffer population growth
title Transient LTRE analysis reveals the demographic and trait‐mediated processes that buffer population growth
title_full Transient LTRE analysis reveals the demographic and trait‐mediated processes that buffer population growth
title_fullStr Transient LTRE analysis reveals the demographic and trait‐mediated processes that buffer population growth
title_full_unstemmed Transient LTRE analysis reveals the demographic and trait‐mediated processes that buffer population growth
title_short Transient LTRE analysis reveals the demographic and trait‐mediated processes that buffer population growth
title_sort transient ltre analysis reveals the demographic and trait‐mediated processes that buffer population growth
topic Letters
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6849557/
https://www.ncbi.nlm.nih.gov/pubmed/30252195
http://dx.doi.org/10.1111/ele.13148
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