Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves

Assessing the spatio-temporal impact of agricultural intensification on species and communities is key for biodiversity conservation. Here, we investigated the seasonal effects of olive grove intensification at both local (farming practices and grove structural complexity) and landscape scale (land-...

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Autores: Jiménez Navarro, Gerardo, Rodríguez Pérez, Javier, Melguizo Ruiz, Nereida, Silva, Bruno, Vasconcelos, Sasha, Beja, Pedro, Moreira, Francisco, Morgado, Rui, Barreiro, Silvia, Herrera, José M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/44972
Acceso en línea:https://hdl.handle.net/2454/44972
Access Level:acceso abierto
Palabra clave:Agricultural intensification
Biodiversity conservation in agroecosystems
Birds and bats
Grove structural complexity
Olive groves
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dc.title.none.fl_str_mv Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves
title Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves
spellingShingle Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves
Jiménez Navarro, Gerardo
Agricultural intensification
Biodiversity conservation in agroecosystems
Birds and bats
Grove structural complexity
Olive groves
title_short Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves
title_full Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves
title_fullStr Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves
title_full_unstemmed Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves
title_sort Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive groves
dc.creator.none.fl_str_mv Jiménez Navarro, Gerardo
Rodríguez Pérez, Javier
Melguizo Ruiz, Nereida
Silva, Bruno
Vasconcelos, Sasha
Beja, Pedro
Moreira, Francisco
Morgado, Rui
Barreiro, Silvia
Herrera, José M.
author Jiménez Navarro, Gerardo
author_facet Jiménez Navarro, Gerardo
Rodríguez Pérez, Javier
Melguizo Ruiz, Nereida
Silva, Bruno
Vasconcelos, Sasha
Beja, Pedro
Moreira, Francisco
Morgado, Rui
Barreiro, Silvia
Herrera, José M.
author_role author
author2 Rodríguez Pérez, Javier
Melguizo Ruiz, Nereida
Silva, Bruno
Vasconcelos, Sasha
Beja, Pedro
Moreira, Francisco
Morgado, Rui
Barreiro, Silvia
Herrera, José M.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ciencias
Zientziak
Institute for Multidisciplinary Research in Applied Biology - IMAB
dc.subject.none.fl_str_mv Agricultural intensification
Biodiversity conservation in agroecosystems
Birds and bats
Grove structural complexity
Olive groves
topic Agricultural intensification
Biodiversity conservation in agroecosystems
Birds and bats
Grove structural complexity
Olive groves
description Assessing the spatio-temporal impact of agricultural intensification on species and communities is key for biodiversity conservation. Here, we investigated the seasonal effects of olive grove intensification at both local (farming practices and grove structural complexity) and landscape scale (land-cover diversity) on birds and bats, at species and community-level. Both groups were surveyed during spring, summer, and autumn in 60 sites representing varying levels of olive grove intensification throughout the Alentejo region (southern Portugal). At the local scale, the number of chemical applications was used as a proxy for the intensification of farming practices and a Structural Index, which accounted for within-grove variability in tree density and features, was used as a measure of grove structural complexity. At landscape scale, we quantified the proportion of the major land-cover types potentially affecting birds and bats. We found that the abundance of ca. 77% of the species analyzed (ca. 84% and 55% of birds and bats respectively) was negatively related to olive grove intensification in at least one season. The Structural Index was the most influential factor at both species and community-levels, especially for birds, with a consistent and strong effect across seasons. Chemical applications had a stronger negative effect on birds, whereas the amount of olive grove cover had a stronger detrimental effect on bats. Birds and bats showed a variable response to predictor variables depending on the season, particularly for the bat community. Our study shows differences in bird and bat responses associated with the spatio-temporal variability of the agricultural intensification components. On the one hand, birds and bats showed a seasonal pattern of association with the different components of olive grove intensification, probably due to their ecological and biological requirements. On the other hand, the responses of both groups also appear to be scale-dependent: while birds seem to respond to in-farm or local intensification more strongly, bats seem to be more influenced by landscape-scale simplification. Overall, we highlight the importance of the structural complexity of olive groves for birds and bats, an aspect that should be considered in the design of agricultural policies aiming to promote biodiversity conservation.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/44972
url https://hdl.handle.net/2454/44972
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/European Commission/Horizon 2020 Framework Programme/862480
dc.rights.none.fl_str_mv © 2022 The Authors. This is an open access article under the CC BY-NC-ND license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2022 The Authors. This is an open access article under the CC BY-NC-ND license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/zip
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
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spelling Disentangling the seasonal effects of agricultural intensification on birds and bats in Mediterranean olive grovesJiménez Navarro, GerardoRodríguez Pérez, JavierMelguizo Ruiz, NereidaSilva, BrunoVasconcelos, SashaBeja, PedroMoreira, FranciscoMorgado, RuiBarreiro, SilviaHerrera, José M.Agricultural intensificationBiodiversity conservation in agroecosystemsBirds and batsGrove structural complexityOlive grovesAssessing the spatio-temporal impact of agricultural intensification on species and communities is key for biodiversity conservation. Here, we investigated the seasonal effects of olive grove intensification at both local (farming practices and grove structural complexity) and landscape scale (land-cover diversity) on birds and bats, at species and community-level. Both groups were surveyed during spring, summer, and autumn in 60 sites representing varying levels of olive grove intensification throughout the Alentejo region (southern Portugal). At the local scale, the number of chemical applications was used as a proxy for the intensification of farming practices and a Structural Index, which accounted for within-grove variability in tree density and features, was used as a measure of grove structural complexity. At landscape scale, we quantified the proportion of the major land-cover types potentially affecting birds and bats. We found that the abundance of ca. 77% of the species analyzed (ca. 84% and 55% of birds and bats respectively) was negatively related to olive grove intensification in at least one season. The Structural Index was the most influential factor at both species and community-levels, especially for birds, with a consistent and strong effect across seasons. Chemical applications had a stronger negative effect on birds, whereas the amount of olive grove cover had a stronger detrimental effect on bats. Birds and bats showed a variable response to predictor variables depending on the season, particularly for the bat community. Our study shows differences in bird and bat responses associated with the spatio-temporal variability of the agricultural intensification components. On the one hand, birds and bats showed a seasonal pattern of association with the different components of olive grove intensification, probably due to their ecological and biological requirements. On the other hand, the responses of both groups also appear to be scale-dependent: while birds seem to respond to in-farm or local intensification more strongly, bats seem to be more influenced by landscape-scale simplification. Overall, we highlight the importance of the structural complexity of olive groves for birds and bats, an aspect that should be considered in the design of agricultural policies aiming to promote biodiversity conservation.This research was funded by the Portuguese Foundation for Science and Technology (FCT) under PTDC/AAG-REC/6480/2014 project and by the regional European Program Alentejo 2020 through the ALT20-03-0145-FEDER-343 000008 project. The study has also received funding from the project SHOWCASE within the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement No. 862480. Authors were supported by the FCT through fellowships and contracts SFRH/BD/133017/2017 (GJ-N), SFRH/BD/137803/2018 (BS), SFRH/BD/121388/2016 (SV), SFRH/BD/99746/2014 (RM), IF/00001/2015 (JMH) and IF/01053/2015 (FM). JRP was funded from “la Caixa” and “Caja Navarra” Foundation, LCF/PR/PR13/51080004.ElsevierCienciasZientziakInstitute for Multidisciplinary Research in Applied Biology - IMAB2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/ziphttps://hdl.handle.net/2454/44972reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/European Commission/Horizon 2020 Framework Programme/862480© 2022 The Authors. This is an open access article under the CC BY-NC-ND license.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/449722026-06-17T12:41:47Z
score 15.81155

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