Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina
- Autores
- Isacch, Juan Pablo; Maceira, Nestor Oscar; Bo, M. S.; Demaría, Manuel; Peluc, Susana Ines
- Año de publicación
- 2005
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In the semi-arid grasslands of the west pampas, in Argentina, extended natural grasslands still persist only with cattle grazing. However, in the last years there has been an important increase in the cultivation of African pasture species. We evaluated the incidence of the replacement of natural grasslands by exotic pastures on bird diversity in spring summer and in winter. In five different grassland habitats (two native and three sown pastures), we sampled bird populations using the strip transect method and vegetation variables simultaneously at the same sites. We used multiple regressions to examine the relative importance of habitat variables on richness, abundance and presence of bird species. The replacement of native grasslands (Sorgastral) by sown pastures results in habitat modifications such as changes in green vegetation, percentage of bare ground and distance to trees. When native grasslands are moderately grazed (mixed grassland) plant species richness increases notably relative to other native and exotic pastures. Some vegetation variables were correlated with bird species richness or with some bird populations. However, the habitat variable that best described bird species richness and bird abundance was plant species richness, which varied both with the grazing history of the native grassland and with the type of pasture used as replacement. Consequently, grassland replacement by sown pastures in the west pampas results in changes in bird alpha diversity; decreasing diversity with respect to mixed grasslands, but favoring it in relation to the climax grassland (Sorgastral). The composition of grassland bird communities in natural grasslands would be little affected by exotic pastures replacement. However, since some vegetation variables best represented in some habitats had particular effects on the abundance and presence of specific grassland birds, managers and policy makers should take into account the complexity of the processes associated with changes in land use of the west pampas. This would not only decrease the probability of negative effects on the total bird diversity but also would decrease the risk of local extinction of declining species.
Fil: Isacch, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; Argentina
Fil: Maceira, Nestor Oscar. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Bo, M. S.. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; Argentina
Fil: Demaría, Manuel. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Peluc, Susana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of California; Estados Unidos - Materia
-
West pampas
Semi-arid grasslands
Bird diversity
Pastures - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/240880
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of ArgentinaIsacch, Juan PabloMaceira, Nestor OscarBo, M. S.Demaría, ManuelPeluc, Susana InesWest pampasSemi-arid grasslandsBird diversityPastureshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In the semi-arid grasslands of the west pampas, in Argentina, extended natural grasslands still persist only with cattle grazing. However, in the last years there has been an important increase in the cultivation of African pasture species. We evaluated the incidence of the replacement of natural grasslands by exotic pastures on bird diversity in spring summer and in winter. In five different grassland habitats (two native and three sown pastures), we sampled bird populations using the strip transect method and vegetation variables simultaneously at the same sites. We used multiple regressions to examine the relative importance of habitat variables on richness, abundance and presence of bird species. The replacement of native grasslands (Sorgastral) by sown pastures results in habitat modifications such as changes in green vegetation, percentage of bare ground and distance to trees. When native grasslands are moderately grazed (mixed grassland) plant species richness increases notably relative to other native and exotic pastures. Some vegetation variables were correlated with bird species richness or with some bird populations. However, the habitat variable that best described bird species richness and bird abundance was plant species richness, which varied both with the grazing history of the native grassland and with the type of pasture used as replacement. Consequently, grassland replacement by sown pastures in the west pampas results in changes in bird alpha diversity; decreasing diversity with respect to mixed grasslands, but favoring it in relation to the climax grassland (Sorgastral). The composition of grassland bird communities in natural grasslands would be little affected by exotic pastures replacement. However, since some vegetation variables best represented in some habitats had particular effects on the abundance and presence of specific grassland birds, managers and policy makers should take into account the complexity of the processes associated with changes in land use of the west pampas. This would not only decrease the probability of negative effects on the total bird diversity but also would decrease the risk of local extinction of declining species.Fil: Isacch, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; ArgentinaFil: Maceira, Nestor Oscar. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Bo, M. S.. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; ArgentinaFil: Demaría, Manuel. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Peluc, Susana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of California; Estados UnidosAcademic Press Ltd - Elsevier Science Ltd2005-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/240880Isacch, Juan Pablo; Maceira, Nestor Oscar; Bo, M. S.; Demaría, Manuel; Peluc, Susana Ines; Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina; Academic Press Ltd - Elsevier Science Ltd; Journal of Arid Environments; 62; 2; 7-2005; 267-2830140-1963CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0140196305000042info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jaridenv.2004.11.008info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:09:53Zoai:ri.conicet.gov.ar:11336/240880instacron: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 10:09:53.724CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina |
title |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina |
spellingShingle |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina Isacch, Juan Pablo West pampas Semi-arid grasslands Bird diversity Pastures |
title_short |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina |
title_full |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina |
title_fullStr |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina |
title_full_unstemmed |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina |
title_sort |
Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina |
dc.creator.none.fl_str_mv |
Isacch, Juan Pablo Maceira, Nestor Oscar Bo, M. S. Demaría, Manuel Peluc, Susana Ines |
author |
Isacch, Juan Pablo |
author_facet |
Isacch, Juan Pablo Maceira, Nestor Oscar Bo, M. S. Demaría, Manuel Peluc, Susana Ines |
author_role |
author |
author2 |
Maceira, Nestor Oscar Bo, M. S. Demaría, Manuel Peluc, Susana Ines |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
West pampas Semi-arid grasslands Bird diversity Pastures |
topic |
West pampas Semi-arid grasslands Bird diversity Pastures |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
In the semi-arid grasslands of the west pampas, in Argentina, extended natural grasslands still persist only with cattle grazing. However, in the last years there has been an important increase in the cultivation of African pasture species. We evaluated the incidence of the replacement of natural grasslands by exotic pastures on bird diversity in spring summer and in winter. In five different grassland habitats (two native and three sown pastures), we sampled bird populations using the strip transect method and vegetation variables simultaneously at the same sites. We used multiple regressions to examine the relative importance of habitat variables on richness, abundance and presence of bird species. The replacement of native grasslands (Sorgastral) by sown pastures results in habitat modifications such as changes in green vegetation, percentage of bare ground and distance to trees. When native grasslands are moderately grazed (mixed grassland) plant species richness increases notably relative to other native and exotic pastures. Some vegetation variables were correlated with bird species richness or with some bird populations. However, the habitat variable that best described bird species richness and bird abundance was plant species richness, which varied both with the grazing history of the native grassland and with the type of pasture used as replacement. Consequently, grassland replacement by sown pastures in the west pampas results in changes in bird alpha diversity; decreasing diversity with respect to mixed grasslands, but favoring it in relation to the climax grassland (Sorgastral). The composition of grassland bird communities in natural grasslands would be little affected by exotic pastures replacement. However, since some vegetation variables best represented in some habitats had particular effects on the abundance and presence of specific grassland birds, managers and policy makers should take into account the complexity of the processes associated with changes in land use of the west pampas. This would not only decrease the probability of negative effects on the total bird diversity but also would decrease the risk of local extinction of declining species. Fil: Isacch, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; Argentina Fil: Maceira, Nestor Oscar. Instituto Nacional de Tecnología Agropecuaria; Argentina Fil: Bo, M. S.. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; Argentina Fil: Demaría, Manuel. Instituto Nacional de Tecnología Agropecuaria; Argentina Fil: Peluc, Susana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of California; Estados Unidos |
description |
In the semi-arid grasslands of the west pampas, in Argentina, extended natural grasslands still persist only with cattle grazing. However, in the last years there has been an important increase in the cultivation of African pasture species. We evaluated the incidence of the replacement of natural grasslands by exotic pastures on bird diversity in spring summer and in winter. In five different grassland habitats (two native and three sown pastures), we sampled bird populations using the strip transect method and vegetation variables simultaneously at the same sites. We used multiple regressions to examine the relative importance of habitat variables on richness, abundance and presence of bird species. The replacement of native grasslands (Sorgastral) by sown pastures results in habitat modifications such as changes in green vegetation, percentage of bare ground and distance to trees. When native grasslands are moderately grazed (mixed grassland) plant species richness increases notably relative to other native and exotic pastures. Some vegetation variables were correlated with bird species richness or with some bird populations. However, the habitat variable that best described bird species richness and bird abundance was plant species richness, which varied both with the grazing history of the native grassland and with the type of pasture used as replacement. Consequently, grassland replacement by sown pastures in the west pampas results in changes in bird alpha diversity; decreasing diversity with respect to mixed grasslands, but favoring it in relation to the climax grassland (Sorgastral). The composition of grassland bird communities in natural grasslands would be little affected by exotic pastures replacement. However, since some vegetation variables best represented in some habitats had particular effects on the abundance and presence of specific grassland birds, managers and policy makers should take into account the complexity of the processes associated with changes in land use of the west pampas. This would not only decrease the probability of negative effects on the total bird diversity but also would decrease the risk of local extinction of declining species. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-07 |
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/11336/240880 Isacch, Juan Pablo; Maceira, Nestor Oscar; Bo, M. S.; Demaría, Manuel; Peluc, Susana Ines; Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina; Academic Press Ltd - Elsevier Science Ltd; Journal of Arid Environments; 62; 2; 7-2005; 267-283 0140-1963 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/240880 |
identifier_str_mv |
Isacch, Juan Pablo; Maceira, Nestor Oscar; Bo, M. S.; Demaría, Manuel; Peluc, Susana Ines; Bird-habitat relationship in semi-arid natural grasslands and exotic pastures in the west pampas of Argentina; Academic Press Ltd - Elsevier Science Ltd; Journal of Arid Environments; 62; 2; 7-2005; 267-283 0140-1963 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0140196305000042 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jaridenv.2004.11.008 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Academic Press Ltd - Elsevier Science Ltd |
publisher.none.fl_str_mv |
Academic Press Ltd - Elsevier Science Ltd |
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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1844613982637260800 |
score |
13.070432 |