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Lions in a coexistence landscape: Repurposing a traditional field technique to monitor an elusive carnivore

Throughout Africa, lions are thought to have experienced dramatic population decline and range contraction. The greatest declines are likely occurring in human‐dominated landscapes where reliably estimating lion populations is particularly challenging. By adapting a method that has thus far only bee...

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Autores principales: Western, Guy, Elliot, Nicholas B., Sompeta, Steiner L., Broekhuis, Femke, Ngene, Shadrack, Gopalaswamy, Arjun M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888262/
https://www.ncbi.nlm.nih.gov/pubmed/35261749
http://dx.doi.org/10.1002/ece3.8662
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author Western, Guy
Elliot, Nicholas B.
Sompeta, Steiner L.
Broekhuis, Femke
Ngene, Shadrack
Gopalaswamy, Arjun M.
author_facet Western, Guy
Elliot, Nicholas B.
Sompeta, Steiner L.
Broekhuis, Femke
Ngene, Shadrack
Gopalaswamy, Arjun M.
author_sort Western, Guy
collection PubMed
description Throughout Africa, lions are thought to have experienced dramatic population decline and range contraction. The greatest declines are likely occurring in human‐dominated landscapes where reliably estimating lion populations is particularly challenging. By adapting a method that has thus far only been applied to animals that are habituated to vehicles, we estimate lion density in two community areas in Kenya's South Rift, located more than 100 km from the nearest protected area (PA). More specifically, we conducted an 89‐day survey using unstructured spatial sampling coupled with playbacks, a commonly used field technique, and estimated lion density using spatial capture‐recapture (SCR) models. Our estimated density of 5.9 lions over the age of 1 year per 100 km(2) compares favorably with many PAs and suggests that this is a key lion population that could be crucial for connectivity across the wider landscape. We discuss the possible mechanisms supporting this density and demonstrate how rigorous field methods combined with robust analyses can produce reliable population estimates within human‐dominated landscapes.
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spelling pubmed-88882622022-03-07 Lions in a coexistence landscape: Repurposing a traditional field technique to monitor an elusive carnivore Western, Guy Elliot, Nicholas B. Sompeta, Steiner L. Broekhuis, Femke Ngene, Shadrack Gopalaswamy, Arjun M. Ecol Evol Research Articles Throughout Africa, lions are thought to have experienced dramatic population decline and range contraction. The greatest declines are likely occurring in human‐dominated landscapes where reliably estimating lion populations is particularly challenging. By adapting a method that has thus far only been applied to animals that are habituated to vehicles, we estimate lion density in two community areas in Kenya's South Rift, located more than 100 km from the nearest protected area (PA). More specifically, we conducted an 89‐day survey using unstructured spatial sampling coupled with playbacks, a commonly used field technique, and estimated lion density using spatial capture‐recapture (SCR) models. Our estimated density of 5.9 lions over the age of 1 year per 100 km(2) compares favorably with many PAs and suggests that this is a key lion population that could be crucial for connectivity across the wider landscape. We discuss the possible mechanisms supporting this density and demonstrate how rigorous field methods combined with robust analyses can produce reliable population estimates within human‐dominated landscapes. John Wiley and Sons Inc. 2022-03-01 /pmc/articles/PMC8888262/ /pubmed/35261749 http://dx.doi.org/10.1002/ece3.8662 Text en © 2022 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
Western, Guy
Elliot, Nicholas B.
Sompeta, Steiner L.
Broekhuis, Femke
Ngene, Shadrack
Gopalaswamy, Arjun M.
Lions in a coexistence landscape: Repurposing a traditional field technique to monitor an elusive carnivore
title Lions in a coexistence landscape: Repurposing a traditional field technique to monitor an elusive carnivore
title_full Lions in a coexistence landscape: Repurposing a traditional field technique to monitor an elusive carnivore
title_fullStr Lions in a coexistence landscape: Repurposing a traditional field technique to monitor an elusive carnivore
title_full_unstemmed Lions in a coexistence landscape: Repurposing a traditional field technique to monitor an elusive carnivore
title_short Lions in a coexistence landscape: Repurposing a traditional field technique to monitor an elusive carnivore
title_sort lions in a coexistence landscape: repurposing a traditional field technique to monitor an elusive carnivore
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888262/
https://www.ncbi.nlm.nih.gov/pubmed/35261749
http://dx.doi.org/10.1002/ece3.8662
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