In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation

Autores
Guzman, Luis Miguel; Villagra, Pablo Eugenio; Quiroga, Raul Emiliano; Pereyra, Diego Ivan; Pelliza, Ernesto Martin; Ricarte, Ramon Armando; Blanco, Lisandro Javier
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Increasing shrub density hinders cattle raising in central Argentina rangelands. While roller- chopping and hand-cutting are used to remove shrubs and make land accessible for cattle grazing, studies on the effects of these practices on ecosystem composition, structure and functioning are scarce. We assessed the impact of shrub removal on (a) vegetation cover, composition, species richness and diversity and (b) green biomass and seasonal phenological dynamics. We used a randomised design with three treatments (degraded rangeland; roller-chopping and hand-cutting) with four replicates, and compared the treatments with the least disturbed woodland (conserved woodland). Cenchrus ciliaris L. was sown following removal treatments and grass cover increased significantly (45% roller-chopping and 84% hand-cutting vs 27% degraded rangeland, and 13% conserved woodland), and tree cover decreased (3% roller-chopping and 2% hand-cutting vs 16% degraded rangeland, and 23% conserved woodland). Shrub cover reached 45% under roller- chopping, similar to the degraded rangeland treatment (46% degraded rangeland, 60% conserved woodland), but in hand-cutting reached only 3% cover. Hand-cutting reduced species richness and vegetation diversity, whereas roller-chopping had no effect. Shrub-removal treatments decreased normalised difference vegetation index (NDVI; proxy of green biomass) and modified ecosystem phenology. Under both shrub treatments, the maximum, minimum and integral NDVI (area under the NDVI curve) were significantly lower than those of the degraded rangeland treatment. The results suggest that shrub-removal practices increase forage for livestock, but reduce functional diversity and compromise the return to less disturbed states (woodland), where tree populations are maintained.
EEA La Rioja
Fil: Guzman, Luis Miguel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fil: Villagra, Pablo Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA); Argentina
Fil: Villagra, Pablo Eugenio. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA); Argentina
Fil: Quiroga, Raul Emiliano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; Argentina
Fil: Pereyra, Diego Ivan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fil: Pelliza, Ernesto Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fil: Ricarte, Ramon Armando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fil: Blanco, Lisandro Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fuente
The Rangeland Journal 44 (4) : 193-202. (23 February 2023)
Materia
Grassland Management
Biomass Production
Grazing
Scrublands
Woodlands
Grazing Systems
Arid Zones
Manejo de Praderas
Producción de Biomasa
Pastoreo
Tierras de Matorral
Formación Boscosa
Zona Arida
Argentina
Woody-plant Encroachment
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/14318
Acceder
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oai_identifier_str oai:localhost:20.500.12123/14318
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetationGuzman, Luis MiguelVillagra, Pablo EugenioQuiroga, Raul EmilianoPereyra, Diego IvanPelliza, Ernesto MartinRicarte, Ramon ArmandoBlanco, Lisandro JavierGrassland ManagementBiomass ProductionGrazingScrublandsWoodlandsGrazing SystemsArid ZonesManejo de PraderasProducción de BiomasaPastoreoTierras de MatorralFormación BoscosaZona AridaArgentinaWoody-plant EncroachmentIncreasing shrub density hinders cattle raising in central Argentina rangelands. While roller- chopping and hand-cutting are used to remove shrubs and make land accessible for cattle grazing, studies on the effects of these practices on ecosystem composition, structure and functioning are scarce. We assessed the impact of shrub removal on (a) vegetation cover, composition, species richness and diversity and (b) green biomass and seasonal phenological dynamics. We used a randomised design with three treatments (degraded rangeland; roller-chopping and hand-cutting) with four replicates, and compared the treatments with the least disturbed woodland (conserved woodland). Cenchrus ciliaris L. was sown following removal treatments and grass cover increased significantly (45% roller-chopping and 84% hand-cutting vs 27% degraded rangeland, and 13% conserved woodland), and tree cover decreased (3% roller-chopping and 2% hand-cutting vs 16% degraded rangeland, and 23% conserved woodland). Shrub cover reached 45% under roller- chopping, similar to the degraded rangeland treatment (46% degraded rangeland, 60% conserved woodland), but in hand-cutting reached only 3% cover. Hand-cutting reduced species richness and vegetation diversity, whereas roller-chopping had no effect. Shrub-removal treatments decreased normalised difference vegetation index (NDVI; proxy of green biomass) and modified ecosystem phenology. Under both shrub treatments, the maximum, minimum and integral NDVI (area under the NDVI curve) were significantly lower than those of the degraded rangeland treatment. The results suggest that shrub-removal practices increase forage for livestock, but reduce functional diversity and compromise the return to less disturbed states (woodland), where tree populations are maintained.EEA La RiojaFil: Guzman, Luis Miguel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; ArgentinaFil: Villagra, Pablo Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA); ArgentinaFil: Villagra, Pablo Eugenio. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA); ArgentinaFil: Quiroga, Raul Emiliano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; ArgentinaFil: Pereyra, Diego Ivan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; ArgentinaFil: Pelliza, Ernesto Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; ArgentinaFil: Ricarte, Ramon Armando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; ArgentinaFil: Blanco, Lisandro Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; ArgentinaCSIRO2023-03-23T14:03:36Z2023-03-23T14:03:36Z2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/143181036-98721834-7541 (Online)https://doi.org/10.1071/RJ22040The Rangeland Journal 44 (4) : 193-202. (23 February 2023)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología AgropecuariaengChaco Central .......... (general region) (World, South America, Argentina)1111937info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:45:56Zoai:localhost:20.500.12123/14318instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:45:56.808INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation
title In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation
spellingShingle In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation
Guzman, Luis Miguel
Grassland Management
Biomass Production
Grazing
Scrublands
Woodlands
Grazing Systems
Arid Zones
Manejo de Praderas
Producción de Biomasa
Pastoreo
Tierras de Matorral
Formación Boscosa
Zona Arida
Argentina
Woody-plant Encroachment
title_short In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation
title_full In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation
title_fullStr In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation
title_full_unstemmed In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation
title_sort In search of sustainable livestock management in the Dry Chaco: effect of different shrub-removal practices on vegetation
dc.creator.none.fl_str_mv Guzman, Luis Miguel
Villagra, Pablo Eugenio
Quiroga, Raul Emiliano
Pereyra, Diego Ivan
Pelliza, Ernesto Martin
Ricarte, Ramon Armando
Blanco, Lisandro Javier
author Guzman, Luis Miguel
author_facet Guzman, Luis Miguel
Villagra, Pablo Eugenio
Quiroga, Raul Emiliano
Pereyra, Diego Ivan
Pelliza, Ernesto Martin
Ricarte, Ramon Armando
Blanco, Lisandro Javier
author_role author
author2 Villagra, Pablo Eugenio
Quiroga, Raul Emiliano
Pereyra, Diego Ivan
Pelliza, Ernesto Martin
Ricarte, Ramon Armando
Blanco, Lisandro Javier
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Grassland Management
Biomass Production
Grazing
Scrublands
Woodlands
Grazing Systems
Arid Zones
Manejo de Praderas
Producción de Biomasa
Pastoreo
Tierras de Matorral
Formación Boscosa
Zona Arida
Argentina
Woody-plant Encroachment
topic Grassland Management
Biomass Production
Grazing
Scrublands
Woodlands
Grazing Systems
Arid Zones
Manejo de Praderas
Producción de Biomasa
Pastoreo
Tierras de Matorral
Formación Boscosa
Zona Arida
Argentina
Woody-plant Encroachment
dc.description.none.fl_txt_mv Increasing shrub density hinders cattle raising in central Argentina rangelands. While roller- chopping and hand-cutting are used to remove shrubs and make land accessible for cattle grazing, studies on the effects of these practices on ecosystem composition, structure and functioning are scarce. We assessed the impact of shrub removal on (a) vegetation cover, composition, species richness and diversity and (b) green biomass and seasonal phenological dynamics. We used a randomised design with three treatments (degraded rangeland; roller-chopping and hand-cutting) with four replicates, and compared the treatments with the least disturbed woodland (conserved woodland). Cenchrus ciliaris L. was sown following removal treatments and grass cover increased significantly (45% roller-chopping and 84% hand-cutting vs 27% degraded rangeland, and 13% conserved woodland), and tree cover decreased (3% roller-chopping and 2% hand-cutting vs 16% degraded rangeland, and 23% conserved woodland). Shrub cover reached 45% under roller- chopping, similar to the degraded rangeland treatment (46% degraded rangeland, 60% conserved woodland), but in hand-cutting reached only 3% cover. Hand-cutting reduced species richness and vegetation diversity, whereas roller-chopping had no effect. Shrub-removal treatments decreased normalised difference vegetation index (NDVI; proxy of green biomass) and modified ecosystem phenology. Under both shrub treatments, the maximum, minimum and integral NDVI (area under the NDVI curve) were significantly lower than those of the degraded rangeland treatment. The results suggest that shrub-removal practices increase forage for livestock, but reduce functional diversity and compromise the return to less disturbed states (woodland), where tree populations are maintained.
EEA La Rioja
Fil: Guzman, Luis Miguel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fil: Villagra, Pablo Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA); Argentina
Fil: Villagra, Pablo Eugenio. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA); Argentina
Fil: Quiroga, Raul Emiliano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; Argentina
Fil: Pereyra, Diego Ivan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fil: Pelliza, Ernesto Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fil: Ricarte, Ramon Armando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
Fil: Blanco, Lisandro Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; Argentina
description Increasing shrub density hinders cattle raising in central Argentina rangelands. While roller- chopping and hand-cutting are used to remove shrubs and make land accessible for cattle grazing, studies on the effects of these practices on ecosystem composition, structure and functioning are scarce. We assessed the impact of shrub removal on (a) vegetation cover, composition, species richness and diversity and (b) green biomass and seasonal phenological dynamics. We used a randomised design with three treatments (degraded rangeland; roller-chopping and hand-cutting) with four replicates, and compared the treatments with the least disturbed woodland (conserved woodland). Cenchrus ciliaris L. was sown following removal treatments and grass cover increased significantly (45% roller-chopping and 84% hand-cutting vs 27% degraded rangeland, and 13% conserved woodland), and tree cover decreased (3% roller-chopping and 2% hand-cutting vs 16% degraded rangeland, and 23% conserved woodland). Shrub cover reached 45% under roller- chopping, similar to the degraded rangeland treatment (46% degraded rangeland, 60% conserved woodland), but in hand-cutting reached only 3% cover. Hand-cutting reduced species richness and vegetation diversity, whereas roller-chopping had no effect. Shrub-removal treatments decreased normalised difference vegetation index (NDVI; proxy of green biomass) and modified ecosystem phenology. Under both shrub treatments, the maximum, minimum and integral NDVI (area under the NDVI curve) were significantly lower than those of the degraded rangeland treatment. The results suggest that shrub-removal practices increase forage for livestock, but reduce functional diversity and compromise the return to less disturbed states (woodland), where tree populations are maintained.
publishDate 2023
dc.date.none.fl_str_mv 2023-03-23T14:03:36Z
2023-03-23T14:03:36Z
2023
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/20.500.12123/14318
1036-9872
1834-7541 (Online)
https://doi.org/10.1071/RJ22040
url http://hdl.handle.net/20.500.12123/14318
https://doi.org/10.1071/RJ22040
identifier_str_mv 1036-9872
1834-7541 (Online)
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Chaco Central .......... (general region) (World, South America, Argentina)
1111937
dc.publisher.none.fl_str_mv CSIRO
publisher.none.fl_str_mv CSIRO
dc.source.none.fl_str_mv The Rangeland Journal 44 (4) : 193-202. (23 February 2023)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
_version_ 1844619175084949504
score 12.559606

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