Drivers and spatial patterns of avian defaunation in tropical forests

Aim: Wildlife overexploitation, either for food consumption or for the pet trade, is one of the main threats to bird species in tropical forests. Yet, the spatial distribution and intensity of harvesting pressure on tropical birds remain challenging to quantify. Here, we identify the drivers of hunt...

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Autores: Ferreiro-Arias, Iago, Santini, Luca, Sagar, H. S. Sathya Chandra, Richard-Hansen, Cécile, Guilbert, Eric, Forget, Pierre-Michel, Van Kuijk, Marijke, Scabin, Andressa B., Peres, Carlos A., Revilla, Eloy, Benítez-López, Ana
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/387131
Acesso em linha:http://hdl.handle.net/10261/387131
Access Level:acceso abierto
Palavra-chave:Abundance
Bird, Bushmeat
Defaunation
Hunting
Overexploitation
Pantropical
Pet Trade
Poaching
Wild Meat
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spelling Drivers and spatial patterns of avian defaunation in tropical forestsFerreiro-Arias, IagoSantini, LucaSagar, H. S. Sathya ChandraRichard-Hansen, CécileGuilbert, EricForget, Pierre-MichelVan Kuijk, MarijkeScabin, Andressa B.Peres, Carlos A.Revilla, EloyBenítez-López, AnaAbundanceBird, BushmeatDefaunationHuntingOverexploitationPantropicalPet TradePoachingWild MeatAim: Wildlife overexploitation, either for food consumption or for the pet trade, is one of the main threats to bird species in tropical forests. Yet, the spatial distribution and intensity of harvesting pressure on tropical birds remain challenging to quantify. Here, we identify the drivers of hunting-induced declines in bird abundance and quantify the magnitude and the spatial extent of avian defaunation at a pantropical scale. Location: Pantropical. Methods: We compiled 2968 abundance estimates in hunted and non-hunted sites across the tropics spanning 518 bird species. Using a Bayesian modelling framework, we fitted species' abundance response ratios to a set of drivers of hunting pressure and species traits. Subsequently, we applied our model to quantify the spatial patterns of avian defaunation across tropical forests and to assess avian defaunation across bio-geographic realms, and for species captured for the pet trade or for food consumption. Results: Body mass and its interactions with hunter accessibility and proximity to urban markets were the most important drivers of hunting-induced bird abundance declines. We estimated a mean abundance reduction of 12% across the tropics for all species, and that 43% of the extent of tropical forests harbour defaunated avian communities. Large- bodied species and the Indomalayan realm displayed the greatest abundance declines. Further, moderate to high levels of defaunation extended over 24% of the pantropical forest area, with distinct spatial patterns for species captured for the pet trade (Brazil, China and Indonesia) and for food consumption (SE Asia and West Africa). Main Conclusions: Our study emphasizes the role of hunter accessibility and the proximity to urban markets as major drivers of bird abundance declines due to hunting and trapping. We further identified hotspots where overexploitation has detrimental effects on tropical birds, encompassing local extinction events, thus underscoring the urgent need for conservation efforts to address unsustainable exploitation for both subsistence and trade.Blackwell PublishingJunta de AndalucíaMinisterio de Ciencia e Innovación (España)European CommissionBenítez-López, Ana [0000-0002-6432-1837]Ferreiro-Arias, Iago [0000-0003-4178-5783]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2025202520242025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/387131reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/Ministerio de Ciencia e Innovación//RYC2021-031737-Iinfo:eu-repo/grantAgreement/Junta de Andalucía//EMERGIA20_00252info:eu-repo/grantAgreement/Junta de Andalucía//PREDOC_01122Ferreiro-Arias, Iago; Santini, Luca; Sagar, H. S. Sathya Chandra; Richard-Hansen, Cécile; Guilbert, Eric; Forget, Pierre-Michel; Van Kuijk, Marijke; Scabin, Andressa B.; Peres, Carlos A.; Revilla, Eloy; Benítez-López, Ana; 2025; Data from: Drivers and spatial patterns of avian defaunation in tropical forests [Dataset]; Dryad; https://doi.org/10.5061/dryad.2z34tmpsw; http://hdl.handle.net/10261/424803http://dx.doi.org/10.1111/ddi.13855Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3871312026-05-22T06:33:51Z
dc.title.none.fl_str_mv Drivers and spatial patterns of avian defaunation in tropical forests
title Drivers and spatial patterns of avian defaunation in tropical forests
spellingShingle Drivers and spatial patterns of avian defaunation in tropical forests
Ferreiro-Arias, Iago
Abundance
Bird, Bushmeat
Defaunation
Hunting
Overexploitation
Pantropical
Pet Trade
Poaching
Wild Meat
title_short Drivers and spatial patterns of avian defaunation in tropical forests
title_full Drivers and spatial patterns of avian defaunation in tropical forests
title_fullStr Drivers and spatial patterns of avian defaunation in tropical forests
title_full_unstemmed Drivers and spatial patterns of avian defaunation in tropical forests
title_sort Drivers and spatial patterns of avian defaunation in tropical forests
dc.creator.none.fl_str_mv Ferreiro-Arias, Iago
Santini, Luca
Sagar, H. S. Sathya Chandra
Richard-Hansen, Cécile
Guilbert, Eric
Forget, Pierre-Michel
Van Kuijk, Marijke
Scabin, Andressa B.
Peres, Carlos A.
Revilla, Eloy
Benítez-López, Ana
author Ferreiro-Arias, Iago
author_facet Ferreiro-Arias, Iago
Santini, Luca
Sagar, H. S. Sathya Chandra
Richard-Hansen, Cécile
Guilbert, Eric
Forget, Pierre-Michel
Van Kuijk, Marijke
Scabin, Andressa B.
Peres, Carlos A.
Revilla, Eloy
Benítez-López, Ana
author_role author
author2 Santini, Luca
Sagar, H. S. Sathya Chandra
Richard-Hansen, Cécile
Guilbert, Eric
Forget, Pierre-Michel
Van Kuijk, Marijke
Scabin, Andressa B.
Peres, Carlos A.
Revilla, Eloy
Benítez-López, Ana
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Junta de Andalucía
Ministerio de Ciencia e Innovación (España)
European Commission
Benítez-López, Ana [0000-0002-6432-1837]
Ferreiro-Arias, Iago [0000-0003-4178-5783]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Abundance
Bird, Bushmeat
Defaunation
Hunting
Overexploitation
Pantropical
Pet Trade
Poaching
Wild Meat
topic Abundance
Bird, Bushmeat
Defaunation
Hunting
Overexploitation
Pantropical
Pet Trade
Poaching
Wild Meat
description Aim: Wildlife overexploitation, either for food consumption or for the pet trade, is one of the main threats to bird species in tropical forests. Yet, the spatial distribution and intensity of harvesting pressure on tropical birds remain challenging to quantify. Here, we identify the drivers of hunting-induced declines in bird abundance and quantify the magnitude and the spatial extent of avian defaunation at a pantropical scale. Location: Pantropical. Methods: We compiled 2968 abundance estimates in hunted and non-hunted sites across the tropics spanning 518 bird species. Using a Bayesian modelling framework, we fitted species' abundance response ratios to a set of drivers of hunting pressure and species traits. Subsequently, we applied our model to quantify the spatial patterns of avian defaunation across tropical forests and to assess avian defaunation across bio-geographic realms, and for species captured for the pet trade or for food consumption. Results: Body mass and its interactions with hunter accessibility and proximity to urban markets were the most important drivers of hunting-induced bird abundance declines. We estimated a mean abundance reduction of 12% across the tropics for all species, and that 43% of the extent of tropical forests harbour defaunated avian communities. Large- bodied species and the Indomalayan realm displayed the greatest abundance declines. Further, moderate to high levels of defaunation extended over 24% of the pantropical forest area, with distinct spatial patterns for species captured for the pet trade (Brazil, China and Indonesia) and for food consumption (SE Asia and West Africa). Main Conclusions: Our study emphasizes the role of hunter accessibility and the proximity to urban markets as major drivers of bird abundance declines due to hunting and trapping. We further identified hotspots where overexploitation has detrimental effects on tropical birds, encompassing local extinction events, thus underscoring the urgent need for conservation efforts to address unsustainable exploitation for both subsistence and trade.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/387131
url http://hdl.handle.net/10261/387131
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/Ministerio de Ciencia e Innovación//RYC2021-031737-I
info:eu-repo/grantAgreement/Junta de Andalucía//EMERGIA20_00252
info:eu-repo/grantAgreement/Junta de Andalucía//PREDOC_01122
Ferreiro-Arias, Iago; Santini, Luca; Sagar, H. S. Sathya Chandra; Richard-Hansen, Cécile; Guilbert, Eric; Forget, Pierre-Michel; Van Kuijk, Marijke; Scabin, Andressa B.; Peres, Carlos A.; Revilla, Eloy; Benítez-López, Ana; 2025; Data from: Drivers and spatial patterns of avian defaunation in tropical forests [Dataset]; Dryad; https://doi.org/10.5061/dryad.2z34tmpsw; http://hdl.handle.net/10261/424803
http://dx.doi.org/10.1111/ddi.13855
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Blackwell Publishing
publisher.none.fl_str_mv Blackwell Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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