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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2018
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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. |
format | Online Article Text |
id | pubmed-6849557 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
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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