Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina

Autores
Baladron Felix, Alejandro Victor; Bó, Maria Susana; Bechard, Marc J.; Malizia, Ana Inés
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We evaluated the species composition, relative abundance, habitat use, and seasonal variability of raptor assemblages in the Flooding Pampas of Argentina, which represents the southeastern part of the biome known as the Rio de la Plata Grasslands. We conducted seasonal roadside surveys to detect raptors in modified and natural habitats over a 3-yr period from spring 2006 through autumn 2009. We classified raptor species according to their relative abundances and occurrence frequencies, and compared the assemblage composition among land-cover types (croplands, grazing fields, periurban areas, and grasslands) and seasons. The raptor assemblage in the Flooding Pampas comprised 16 species, representing approximately 43% of all raptor species in the biome. The Chimango Caracara (Milvago chimango) was the dominant species in all land-cover types and seasons. The Southern Caracara (Caracara plancus), American Kestrel (Falco sparverius), and Roadside Hawk (Rupornis magnirostris) were all abundant and very frequently observed species, whereas Burrowing Owl (Athene cunicularia), White-tailed Kite (Elanus leucurus), and Long-winged Harrier (Circus buffoni) were less abundant but recorded during most surveys. The remaining raptors (Aplomado Falcon [Falco femoralis], Cinereous Harrier [Circus cinereus], Short-eared Owl [Asio flammeus], Sharp-shinned Hawk [Accipiter striatus], and Snail Kite [Rostrhamus sociabilis]) were much less abundant in the study area. We also recorded four other raptor species (Variable Hawk [Geranoaetus polyosoma], Black-chested Buzzard-Eagle [G. melanoleucus], Striped Owl [Asio clamator], and Barn Owl [Tyto alba]), but only outside of the standard transect surveys. Species composition differed among land-cover types, but we detected no distinct overall seasonal patterns except that species diversity indices were lower in autumn and especially, spring. Milvago chimango was important to determine similarity in assemblage composition within land-cover types, but other less abundant species, such as C. plancus, A. cunicularia, and R. magnirostris, were more important to differentiate land-cover types based on raptor composition. Species diversity was highest in grazing fields and grasslands, and lowest in periurban areas. Our results suggest that although some raptor species appear to benefit from land-cover patterns in the study area, many other species may be threatened by the expansion of urban areas and agriculture in the Pampas region.
Fil: Baladron Felix, Alejandro Victor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Bó, Maria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Bechard, Marc J.. Boise State University; Estados Unidos
Fil: Malizia, Ana Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Materia
Agroecosystems
Argentina
Flooding Pampas
Grasslands
Habitat Use
Species Diversity
Urbanization
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/64738

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network_name_str CONICET Digital (CONICET)
spelling Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of ArgentinaBaladron Felix, Alejandro VictorBó, Maria SusanaBechard, Marc J.Malizia, Ana InésAgroecosystemsArgentinaFlooding PampasGrasslandsHabitat UseSpecies DiversityUrbanizationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We evaluated the species composition, relative abundance, habitat use, and seasonal variability of raptor assemblages in the Flooding Pampas of Argentina, which represents the southeastern part of the biome known as the Rio de la Plata Grasslands. We conducted seasonal roadside surveys to detect raptors in modified and natural habitats over a 3-yr period from spring 2006 through autumn 2009. We classified raptor species according to their relative abundances and occurrence frequencies, and compared the assemblage composition among land-cover types (croplands, grazing fields, periurban areas, and grasslands) and seasons. The raptor assemblage in the Flooding Pampas comprised 16 species, representing approximately 43% of all raptor species in the biome. The Chimango Caracara (Milvago chimango) was the dominant species in all land-cover types and seasons. The Southern Caracara (Caracara plancus), American Kestrel (Falco sparverius), and Roadside Hawk (Rupornis magnirostris) were all abundant and very frequently observed species, whereas Burrowing Owl (Athene cunicularia), White-tailed Kite (Elanus leucurus), and Long-winged Harrier (Circus buffoni) were less abundant but recorded during most surveys. The remaining raptors (Aplomado Falcon [Falco femoralis], Cinereous Harrier [Circus cinereus], Short-eared Owl [Asio flammeus], Sharp-shinned Hawk [Accipiter striatus], and Snail Kite [Rostrhamus sociabilis]) were much less abundant in the study area. We also recorded four other raptor species (Variable Hawk [Geranoaetus polyosoma], Black-chested Buzzard-Eagle [G. melanoleucus], Striped Owl [Asio clamator], and Barn Owl [Tyto alba]), but only outside of the standard transect surveys. Species composition differed among land-cover types, but we detected no distinct overall seasonal patterns except that species diversity indices were lower in autumn and especially, spring. Milvago chimango was important to determine similarity in assemblage composition within land-cover types, but other less abundant species, such as C. plancus, A. cunicularia, and R. magnirostris, were more important to differentiate land-cover types based on raptor composition. Species diversity was highest in grazing fields and grasslands, and lowest in periurban areas. Our results suggest that although some raptor species appear to benefit from land-cover patterns in the study area, many other species may be threatened by the expansion of urban areas and agriculture in the Pampas region.Fil: Baladron Felix, Alejandro Victor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Bó, Maria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Bechard, Marc J.. Boise State University; Estados UnidosFil: Malizia, Ana Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaRaptor Research Foundation2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/64738Baladron Felix, Alejandro Victor; Bó, Maria Susana; Bechard, Marc J.; Malizia, Ana Inés; Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina; Raptor Research Foundation; Journal of Raptor Research; 51; 1; 3-2017; 38-490892-10162162-4569CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/full/10.3356/JRR-15-56.1info:eu-repo/semantics/altIdentifier/doi/10.3356/JRR-15-56.1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:35Zoai:ri.conicet.gov.ar:11336/64738instacron: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 09:37:35.79CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina
title Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina
spellingShingle Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina
Baladron Felix, Alejandro Victor
Agroecosystems
Argentina
Flooding Pampas
Grasslands
Habitat Use
Species Diversity
Urbanization
title_short Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina
title_full Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina
title_fullStr Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina
title_full_unstemmed Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina
title_sort Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina
dc.creator.none.fl_str_mv Baladron Felix, Alejandro Victor
Bó, Maria Susana
Bechard, Marc J.
Malizia, Ana Inés
author Baladron Felix, Alejandro Victor
author_facet Baladron Felix, Alejandro Victor
Bó, Maria Susana
Bechard, Marc J.
Malizia, Ana Inés
author_role author
author2 Bó, Maria Susana
Bechard, Marc J.
Malizia, Ana Inés
author2_role author
author
author
dc.subject.none.fl_str_mv Agroecosystems
Argentina
Flooding Pampas
Grasslands
Habitat Use
Species Diversity
Urbanization
topic Agroecosystems
Argentina
Flooding Pampas
Grasslands
Habitat Use
Species Diversity
Urbanization
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We evaluated the species composition, relative abundance, habitat use, and seasonal variability of raptor assemblages in the Flooding Pampas of Argentina, which represents the southeastern part of the biome known as the Rio de la Plata Grasslands. We conducted seasonal roadside surveys to detect raptors in modified and natural habitats over a 3-yr period from spring 2006 through autumn 2009. We classified raptor species according to their relative abundances and occurrence frequencies, and compared the assemblage composition among land-cover types (croplands, grazing fields, periurban areas, and grasslands) and seasons. The raptor assemblage in the Flooding Pampas comprised 16 species, representing approximately 43% of all raptor species in the biome. The Chimango Caracara (Milvago chimango) was the dominant species in all land-cover types and seasons. The Southern Caracara (Caracara plancus), American Kestrel (Falco sparverius), and Roadside Hawk (Rupornis magnirostris) were all abundant and very frequently observed species, whereas Burrowing Owl (Athene cunicularia), White-tailed Kite (Elanus leucurus), and Long-winged Harrier (Circus buffoni) were less abundant but recorded during most surveys. The remaining raptors (Aplomado Falcon [Falco femoralis], Cinereous Harrier [Circus cinereus], Short-eared Owl [Asio flammeus], Sharp-shinned Hawk [Accipiter striatus], and Snail Kite [Rostrhamus sociabilis]) were much less abundant in the study area. We also recorded four other raptor species (Variable Hawk [Geranoaetus polyosoma], Black-chested Buzzard-Eagle [G. melanoleucus], Striped Owl [Asio clamator], and Barn Owl [Tyto alba]), but only outside of the standard transect surveys. Species composition differed among land-cover types, but we detected no distinct overall seasonal patterns except that species diversity indices were lower in autumn and especially, spring. Milvago chimango was important to determine similarity in assemblage composition within land-cover types, but other less abundant species, such as C. plancus, A. cunicularia, and R. magnirostris, were more important to differentiate land-cover types based on raptor composition. Species diversity was highest in grazing fields and grasslands, and lowest in periurban areas. Our results suggest that although some raptor species appear to benefit from land-cover patterns in the study area, many other species may be threatened by the expansion of urban areas and agriculture in the Pampas region.
Fil: Baladron Felix, Alejandro Victor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Bó, Maria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Bechard, Marc J.. Boise State University; Estados Unidos
Fil: Malizia, Ana Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
description We evaluated the species composition, relative abundance, habitat use, and seasonal variability of raptor assemblages in the Flooding Pampas of Argentina, which represents the southeastern part of the biome known as the Rio de la Plata Grasslands. We conducted seasonal roadside surveys to detect raptors in modified and natural habitats over a 3-yr period from spring 2006 through autumn 2009. We classified raptor species according to their relative abundances and occurrence frequencies, and compared the assemblage composition among land-cover types (croplands, grazing fields, periurban areas, and grasslands) and seasons. The raptor assemblage in the Flooding Pampas comprised 16 species, representing approximately 43% of all raptor species in the biome. The Chimango Caracara (Milvago chimango) was the dominant species in all land-cover types and seasons. The Southern Caracara (Caracara plancus), American Kestrel (Falco sparverius), and Roadside Hawk (Rupornis magnirostris) were all abundant and very frequently observed species, whereas Burrowing Owl (Athene cunicularia), White-tailed Kite (Elanus leucurus), and Long-winged Harrier (Circus buffoni) were less abundant but recorded during most surveys. The remaining raptors (Aplomado Falcon [Falco femoralis], Cinereous Harrier [Circus cinereus], Short-eared Owl [Asio flammeus], Sharp-shinned Hawk [Accipiter striatus], and Snail Kite [Rostrhamus sociabilis]) were much less abundant in the study area. We also recorded four other raptor species (Variable Hawk [Geranoaetus polyosoma], Black-chested Buzzard-Eagle [G. melanoleucus], Striped Owl [Asio clamator], and Barn Owl [Tyto alba]), but only outside of the standard transect surveys. Species composition differed among land-cover types, but we detected no distinct overall seasonal patterns except that species diversity indices were lower in autumn and especially, spring. Milvago chimango was important to determine similarity in assemblage composition within land-cover types, but other less abundant species, such as C. plancus, A. cunicularia, and R. magnirostris, were more important to differentiate land-cover types based on raptor composition. Species diversity was highest in grazing fields and grasslands, and lowest in periurban areas. Our results suggest that although some raptor species appear to benefit from land-cover patterns in the study area, many other species may be threatened by the expansion of urban areas and agriculture in the Pampas region.
publishDate 2017
dc.date.none.fl_str_mv 2017-03
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/11336/64738
Baladron Felix, Alejandro Victor; Bó, Maria Susana; Bechard, Marc J.; Malizia, Ana Inés; Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina; Raptor Research Foundation; Journal of Raptor Research; 51; 1; 3-2017; 38-49
0892-1016
2162-4569
CONICET Digital
CONICET
url http://hdl.handle.net/11336/64738
identifier_str_mv Baladron Felix, Alejandro Victor; Bó, Maria Susana; Bechard, Marc J.; Malizia, Ana Inés; Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages in the Flooding Pampas of Argentina; Raptor Research Foundation; Journal of Raptor Research; 51; 1; 3-2017; 38-49
0892-1016
2162-4569
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/full/10.3356/JRR-15-56.1
info:eu-repo/semantics/altIdentifier/doi/10.3356/JRR-15-56.1
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
dc.publisher.none.fl_str_mv Raptor Research Foundation
publisher.none.fl_str_mv Raptor Research Foundation
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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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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