Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina

Autores
Marrero, Hugo Javier; Torretta, Juan Pablo; Medan, Diego
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Land use intensification reduces natural areas and alters landscape heterogeneity diminishing species richness and changing ecosystem functionality. The analysis of interaction networks is a useful tool for estimating the degree of change experienced by ecosystems. Here, plant–floral visitor networks from fragments of grassland restored by agricultural activities discontinued over a long time were compared with networks from agriculturalized fragments nearby. The hypothesis evaluated was that land use intensification changes the structure of the original networks by modifying species richness and the network degree of specialization. The study was carried out at three sites located over a 700 km transect across the provinces of Buenos Aires and La Pampa, Argentina. At each site, four fragments were selected (two restored and two agricultural). Five monthly samplings were taken between November and March along three consecutive years. Entomophilous plants and their floral visitors were identified and all plant–floral visitor interactions were recorded. With these data, richness of plants and visitors were calculated, interaction networks were constructed and the degree of specialization was calculated for each network. Land use intensification caused changes in the community composition and degree of specialization. When cropping was the predominant farming enterprise, richness of floral visitors and plants decreased as compared to restored fragments. When cattle production was the predominant land use, richness of floral visitors remained stable. However, at one of the sites plants richness was 48% higher in the grazed fragments than in those restored. In the agricultural fragments, the abundance of units of floral attraction due to exotic plants increased, but the visitation rates were the same as in the restored fragments. The networks in the agricultural fragments were more generalist than in restored fragments, in agreement with previous studies on the effect of land use intensification on natural systems.
Fil: Marrero, Hugo Javier. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Torretta, Juan Pablo. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Medan, Diego. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Degree of Specialization
Plant–Pollinator Networks
Agro-Ecosystems
Land Use Intensification
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/16704
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of ArgentinaMarrero, Hugo JavierTorretta, Juan PabloMedan, DiegoDegree of SpecializationPlant–Pollinator NetworksAgro-EcosystemsLand Use Intensificationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Land use intensification reduces natural areas and alters landscape heterogeneity diminishing species richness and changing ecosystem functionality. The analysis of interaction networks is a useful tool for estimating the degree of change experienced by ecosystems. Here, plant–floral visitor networks from fragments of grassland restored by agricultural activities discontinued over a long time were compared with networks from agriculturalized fragments nearby. The hypothesis evaluated was that land use intensification changes the structure of the original networks by modifying species richness and the network degree of specialization. The study was carried out at three sites located over a 700 km transect across the provinces of Buenos Aires and La Pampa, Argentina. At each site, four fragments were selected (two restored and two agricultural). Five monthly samplings were taken between November and March along three consecutive years. Entomophilous plants and their floral visitors were identified and all plant–floral visitor interactions were recorded. With these data, richness of plants and visitors were calculated, interaction networks were constructed and the degree of specialization was calculated for each network. Land use intensification caused changes in the community composition and degree of specialization. When cropping was the predominant farming enterprise, richness of floral visitors and plants decreased as compared to restored fragments. When cattle production was the predominant land use, richness of floral visitors remained stable. However, at one of the sites plants richness was 48% higher in the grazed fragments than in those restored. In the agricultural fragments, the abundance of units of floral attraction due to exotic plants increased, but the visitation rates were the same as in the restored fragments. The networks in the agricultural fragments were more generalist than in restored fragments, in agreement with previous studies on the effect of land use intensification on natural systems.Fil: Marrero, Hugo Javier. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Torretta, Juan Pablo. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Medan, Diego. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/16704Marrero, Hugo Javier; Torretta, Juan Pablo; Medan, Diego; Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina; Elsevier Science; Agriculture, Ecosystems And Environment; 188; 4-2014; 63-710167-8809enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.agee.2014.02.017info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0167880914000978info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:38:35Zoai:ri.conicet.gov.ar:11336/16704instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:38:35.868CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina
title Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina
spellingShingle Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina
Marrero, Hugo Javier
Degree of Specialization
Plant–Pollinator Networks
Agro-Ecosystems
Land Use Intensification
title_short Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina
title_full Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina
title_fullStr Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina
title_full_unstemmed Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina
title_sort Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina
dc.creator.none.fl_str_mv Marrero, Hugo Javier
Torretta, Juan Pablo
Medan, Diego
author Marrero, Hugo Javier
author_facet Marrero, Hugo Javier
Torretta, Juan Pablo
Medan, Diego
author_role author
author2 Torretta, Juan Pablo
Medan, Diego
author2_role author
author
dc.subject.none.fl_str_mv Degree of Specialization
Plant–Pollinator Networks
Agro-Ecosystems
Land Use Intensification
topic Degree of Specialization
Plant–Pollinator Networks
Agro-Ecosystems
Land Use Intensification
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Land use intensification reduces natural areas and alters landscape heterogeneity diminishing species richness and changing ecosystem functionality. The analysis of interaction networks is a useful tool for estimating the degree of change experienced by ecosystems. Here, plant–floral visitor networks from fragments of grassland restored by agricultural activities discontinued over a long time were compared with networks from agriculturalized fragments nearby. The hypothesis evaluated was that land use intensification changes the structure of the original networks by modifying species richness and the network degree of specialization. The study was carried out at three sites located over a 700 km transect across the provinces of Buenos Aires and La Pampa, Argentina. At each site, four fragments were selected (two restored and two agricultural). Five monthly samplings were taken between November and March along three consecutive years. Entomophilous plants and their floral visitors were identified and all plant–floral visitor interactions were recorded. With these data, richness of plants and visitors were calculated, interaction networks were constructed and the degree of specialization was calculated for each network. Land use intensification caused changes in the community composition and degree of specialization. When cropping was the predominant farming enterprise, richness of floral visitors and plants decreased as compared to restored fragments. When cattle production was the predominant land use, richness of floral visitors remained stable. However, at one of the sites plants richness was 48% higher in the grazed fragments than in those restored. In the agricultural fragments, the abundance of units of floral attraction due to exotic plants increased, but the visitation rates were the same as in the restored fragments. The networks in the agricultural fragments were more generalist than in restored fragments, in agreement with previous studies on the effect of land use intensification on natural systems.
Fil: Marrero, Hugo Javier. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Torretta, Juan Pablo. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Medan, Diego. Universidad de Buenos Aires. Facultad de Agronomia. Cátedra de Botanica General; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Land use intensification reduces natural areas and alters landscape heterogeneity diminishing species richness and changing ecosystem functionality. The analysis of interaction networks is a useful tool for estimating the degree of change experienced by ecosystems. Here, plant–floral visitor networks from fragments of grassland restored by agricultural activities discontinued over a long time were compared with networks from agriculturalized fragments nearby. The hypothesis evaluated was that land use intensification changes the structure of the original networks by modifying species richness and the network degree of specialization. The study was carried out at three sites located over a 700 km transect across the provinces of Buenos Aires and La Pampa, Argentina. At each site, four fragments were selected (two restored and two agricultural). Five monthly samplings were taken between November and March along three consecutive years. Entomophilous plants and their floral visitors were identified and all plant–floral visitor interactions were recorded. With these data, richness of plants and visitors were calculated, interaction networks were constructed and the degree of specialization was calculated for each network. Land use intensification caused changes in the community composition and degree of specialization. When cropping was the predominant farming enterprise, richness of floral visitors and plants decreased as compared to restored fragments. When cattle production was the predominant land use, richness of floral visitors remained stable. However, at one of the sites plants richness was 48% higher in the grazed fragments than in those restored. In the agricultural fragments, the abundance of units of floral attraction due to exotic plants increased, but the visitation rates were the same as in the restored fragments. The networks in the agricultural fragments were more generalist than in restored fragments, in agreement with previous studies on the effect of land use intensification on natural systems.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/16704
Marrero, Hugo Javier; Torretta, Juan Pablo; Medan, Diego; Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina; Elsevier Science; Agriculture, Ecosystems And Environment; 188; 4-2014; 63-71
0167-8809
url http://hdl.handle.net/11336/16704
identifier_str_mv Marrero, Hugo Javier; Torretta, Juan Pablo; Medan, Diego; Effect of land use intensification on specialization in plant–floral visitor interaction networks in the Pampas of Argentina; Elsevier Science; Agriculture, Ecosystems And Environment; 188; 4-2014; 63-71
0167-8809
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.agee.2014.02.017
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0167880914000978
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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