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Review of range‐wide vital rates quantifies eastern wild Turkey population trajectory

Recent declines in eastern wild turkeys (Meleagris gallopavo silvestris) have prompted increased interest in management and research of this important game species. However, the mechanisms underlying these declines are unclear, leaving uncertainty in how best to manage this species. Foundational to...

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Autores principales: Londe, David W., Moeller, Anna K., Lukacs, Paul M., Fuhlendorf, Samuel D., Davis, Craig A., Elmore, Robert Dwayne, Chitwood, M. Colter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9943937/
https://www.ncbi.nlm.nih.gov/pubmed/36844669
http://dx.doi.org/10.1002/ece3.9830
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author Londe, David W.
Moeller, Anna K.
Lukacs, Paul M.
Fuhlendorf, Samuel D.
Davis, Craig A.
Elmore, Robert Dwayne
Chitwood, M. Colter
author_facet Londe, David W.
Moeller, Anna K.
Lukacs, Paul M.
Fuhlendorf, Samuel D.
Davis, Craig A.
Elmore, Robert Dwayne
Chitwood, M. Colter
author_sort Londe, David W.
collection PubMed
description Recent declines in eastern wild turkeys (Meleagris gallopavo silvestris) have prompted increased interest in management and research of this important game species. However, the mechanisms underlying these declines are unclear, leaving uncertainty in how best to manage this species. Foundational to effective management of wildlife species is understanding the biotic and abiotic factors that influence demographic parameters and the contribution of vital rates to population growth. Our objectives for this study were to (1) conduct a literature review to collect all published vital rates for eastern wild turkey over the last 50 years, (2) perform a scoping review of the biotic and abiotic factors that have been studied relative to wild turkey vital rates and highlight areas that require additional research, and (3) use the published vital rates to populate a life‐stage simulation analysis (LSA) and identify the vital rates that make the greatest contribution to population growth. Based on published vital rates for eastern wild turkey, we estimated a mean asymptotic population growth rate (λ) of 0.91 (95% CI = 0.71, 1.12). Vital rates associated with after‐second‐year (ASY) females were most influential in determining population growth. Survival of ASY females had the greatest elasticity (0.53), while reproduction of ASY females had lower elasticity (0.21), but high process variance, causing it to explain a greater proportion of variance in λ. Our scoping review found that most research has focused on the effects of habitat characteristics at nest sites and the direct effects of harvest on adult survival, while research on topics such as disease, weather, predators, or anthropogenic activity on vital rates has received less attention. We recommend that future research take a more mechanistic approach to understanding variation in wild turkey vital rates as this will assist managers in determining the most appropriate management approach.
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spelling pubmed-99439372023-02-23 Review of range‐wide vital rates quantifies eastern wild Turkey population trajectory Londe, David W. Moeller, Anna K. Lukacs, Paul M. Fuhlendorf, Samuel D. Davis, Craig A. Elmore, Robert Dwayne Chitwood, M. Colter Ecol Evol Research Articles Recent declines in eastern wild turkeys (Meleagris gallopavo silvestris) have prompted increased interest in management and research of this important game species. However, the mechanisms underlying these declines are unclear, leaving uncertainty in how best to manage this species. Foundational to effective management of wildlife species is understanding the biotic and abiotic factors that influence demographic parameters and the contribution of vital rates to population growth. Our objectives for this study were to (1) conduct a literature review to collect all published vital rates for eastern wild turkey over the last 50 years, (2) perform a scoping review of the biotic and abiotic factors that have been studied relative to wild turkey vital rates and highlight areas that require additional research, and (3) use the published vital rates to populate a life‐stage simulation analysis (LSA) and identify the vital rates that make the greatest contribution to population growth. Based on published vital rates for eastern wild turkey, we estimated a mean asymptotic population growth rate (λ) of 0.91 (95% CI = 0.71, 1.12). Vital rates associated with after‐second‐year (ASY) females were most influential in determining population growth. Survival of ASY females had the greatest elasticity (0.53), while reproduction of ASY females had lower elasticity (0.21), but high process variance, causing it to explain a greater proportion of variance in λ. Our scoping review found that most research has focused on the effects of habitat characteristics at nest sites and the direct effects of harvest on adult survival, while research on topics such as disease, weather, predators, or anthropogenic activity on vital rates has received less attention. We recommend that future research take a more mechanistic approach to understanding variation in wild turkey vital rates as this will assist managers in determining the most appropriate management approach. John Wiley and Sons Inc. 2023-02-22 /pmc/articles/PMC9943937/ /pubmed/36844669 http://dx.doi.org/10.1002/ece3.9830 Text en © 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Londe, David W.
Moeller, Anna K.
Lukacs, Paul M.
Fuhlendorf, Samuel D.
Davis, Craig A.
Elmore, Robert Dwayne
Chitwood, M. Colter
Review of range‐wide vital rates quantifies eastern wild Turkey population trajectory
title Review of range‐wide vital rates quantifies eastern wild Turkey population trajectory
title_full Review of range‐wide vital rates quantifies eastern wild Turkey population trajectory
title_fullStr Review of range‐wide vital rates quantifies eastern wild Turkey population trajectory
title_full_unstemmed Review of range‐wide vital rates quantifies eastern wild Turkey population trajectory
title_short Review of range‐wide vital rates quantifies eastern wild Turkey population trajectory
title_sort review of range‐wide vital rates quantifies eastern wild turkey population trajectory
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9943937/
https://www.ncbi.nlm.nih.gov/pubmed/36844669
http://dx.doi.org/10.1002/ece3.9830
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