Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal

Understanding the processes that structure biodiversity on Earth is a major challenge in biology. Our work tests three key hypotheses driving taxonomic changes in bird communities globally, focusing on nestedness and turnover components: (1) contemporary climate, related to energy and water availabi...

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Autores: Kubota, Nanami, Abellán Ródenas, Pedro, Gaspar, Mario, Anadón, José D.
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2025
País:España
Recursos:Universidad de Sevilla (US)
Repositório:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:dnet:idus________::bc24cc23c280ccdbf515f614a8003d90
Acesso em linha:https://hdl.handle.net/11441/170898
https://doi.org/10.1111/geb.70023
Access Level:Acceso aberto
Palavra-chave:Community assemblage
Avian diversity
Beta diversity
Turnover
Nestedness
Phylogenetic deviations
Overdispersion
Underdispersion
Environmental gradients
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spelling Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic SignalKubota, NanamiAbellán Ródenas, PedroGaspar, MarioAnadón, José D.Community assemblageAvian diversityBeta diversityTurnoverNestednessPhylogenetic deviationsOverdispersionUnderdispersionEnvironmental gradientsUnderstanding the processes that structure biodiversity on Earth is a major challenge in biology. Our work tests three key hypotheses driving taxonomic changes in bird communities globally, focusing on nestedness and turnover components: (1) contemporary climate, related to energy and water availability; (2) climate stability, reflecting shifts since the last glacial maximum; and (3) climatic heterogeneity, describing environmental gradients. We also examine whether these processes explain deviations in phylogenetic composition from expectations based on taxonomic changes among communities. Location Global. Time Period Present. Major Taxa Studied Birds. Methods We calculated total taxonomic dissimilarity, its nestedness and turnover components, between neighbouring cells considering all living bird species. We tested for significant phylogenetic over- and underdispersion by comparing observed phylogenetic dissimilarity to a null model. We used linear regression models to quantify the relationships between taxonomic dissimilarity and phylogenetic deviations with climatic variables representing our hypotheses. Results Precipitation steepness, that is, relative changes in precipitation, was strongly correlated with taxonomic changes (R2 = 27%), driving both changes in local community richness (nestedness) and species replacement between different regional pools (turnover). These two processes were decoupled, with precipitation steepness driving richness differences up to 1200 mm of annual precipitation, and turnover being more relevant in hyperarid and tropical areas. Phylogenetic deviations were common (35% of global cells), resulting from both over- and underdispersion, but they lacked a climatic signal. Main Conclusions Our work supports the hypothesis that climatic heterogeneity, due to precipitation steepness, is the main climatic factor driving composition changes in bird communities globally, controlling local richness and transitions between regional pools. Changes in species composition often lead to phylogenetic dispersion or clustering, but the main processes responsible for taxonomic sorting are phylogenetically neutral. As such, taxonomic and phylogenetic changes between neighbouring bird communities may be driven largely by different processes.WileyZoologíaAgencia Estatal de Investigación. España2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/170898https://doi.org/10.1111/geb.70023reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésGlobal Ecology and Biogeography, 34 (3), e70023.RYC-2017-22783https://doi.org/10.1111/geb.70023info:eu-repo/semantics/openAccessoai:dnet:idus________::bc24cc23c280ccdbf515f614a8003d902026-06-17T12:51:07Z
dc.title.none.fl_str_mv Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal
title Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal
spellingShingle Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal
Kubota, Nanami
Community assemblage
Avian diversity
Beta diversity
Turnover
Nestedness
Phylogenetic deviations
Overdispersion
Underdispersion
Environmental gradients
title_short Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal
title_full Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal
title_fullStr Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal
title_full_unstemmed Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal
title_sort Precipitation Steepness Drives Global Patterns of Changes in Bird Community Composition Without Major Phylogenetic Signal
dc.creator.none.fl_str_mv Kubota, Nanami
Abellán Ródenas, Pedro
Gaspar, Mario
Anadón, José D.
author Kubota, Nanami
author_facet Kubota, Nanami
Abellán Ródenas, Pedro
Gaspar, Mario
Anadón, José D.
author_role author
author2 Abellán Ródenas, Pedro
Gaspar, Mario
Anadón, José D.
author2_role author
author
author
dc.contributor.none.fl_str_mv Zoología
Agencia Estatal de Investigación. España
dc.subject.none.fl_str_mv Community assemblage
Avian diversity
Beta diversity
Turnover
Nestedness
Phylogenetic deviations
Overdispersion
Underdispersion
Environmental gradients
topic Community assemblage
Avian diversity
Beta diversity
Turnover
Nestedness
Phylogenetic deviations
Overdispersion
Underdispersion
Environmental gradients
description Understanding the processes that structure biodiversity on Earth is a major challenge in biology. Our work tests three key hypotheses driving taxonomic changes in bird communities globally, focusing on nestedness and turnover components: (1) contemporary climate, related to energy and water availability; (2) climate stability, reflecting shifts since the last glacial maximum; and (3) climatic heterogeneity, describing environmental gradients. We also examine whether these processes explain deviations in phylogenetic composition from expectations based on taxonomic changes among communities. Location Global. Time Period Present. Major Taxa Studied Birds. Methods We calculated total taxonomic dissimilarity, its nestedness and turnover components, between neighbouring cells considering all living bird species. We tested for significant phylogenetic over- and underdispersion by comparing observed phylogenetic dissimilarity to a null model. We used linear regression models to quantify the relationships between taxonomic dissimilarity and phylogenetic deviations with climatic variables representing our hypotheses. Results Precipitation steepness, that is, relative changes in precipitation, was strongly correlated with taxonomic changes (R2 = 27%), driving both changes in local community richness (nestedness) and species replacement between different regional pools (turnover). These two processes were decoupled, with precipitation steepness driving richness differences up to 1200 mm of annual precipitation, and turnover being more relevant in hyperarid and tropical areas. Phylogenetic deviations were common (35% of global cells), resulting from both over- and underdispersion, but they lacked a climatic signal. Main Conclusions Our work supports the hypothesis that climatic heterogeneity, due to precipitation steepness, is the main climatic factor driving composition changes in bird communities globally, controlling local richness and transitions between regional pools. Changes in species composition often lead to phylogenetic dispersion or clustering, but the main processes responsible for taxonomic sorting are phylogenetically neutral. As such, taxonomic and phylogenetic changes between neighbouring bird communities may be driven largely by different processes.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/170898
https://doi.org/10.1111/geb.70023
url https://hdl.handle.net/11441/170898
https://doi.org/10.1111/geb.70023
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Global Ecology and Biogeography, 34 (3), e70023.
RYC-2017-22783
https://doi.org/10.1111/geb.70023
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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