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Abstract:

A combination of elements (e.g., crops and pasture lands, strips of roadside vegetation, woodlots, temporary wetlands) increases the heterogeneity of rural landscapes. Agricultural landscapes range from homogeneous, dominated by a single element (i.e., pure cropland or pure pastoral farming) to heterogeneous, dominated by two or more elements (i.e., mixed farming). In this study we characterized landbird assemblages in various agricultural landscapes (cropland, pastoral, and mixed landscapes) in the Pampas of central Argentina, surveying along transects to quantify species richness, composition, and abundance. Mixed landscapes were more heterogeneous than pastoral areas and cropland. Species richness, particularly of generalists, was greater in mixed landscapes. Richness of grassland specialists (species of increased conservation concern in the Pampas) was lower in croplands than in pastoral and mixed landscapes. An indicator-species analysis supported the association of some grassland specialists (Rhea americana, Asthenes hudsoni, Embernagra platensis, Pseudoleistes virescens) with pastoral landscapes. Our results suggest that maintaining landscape heterogeneity throughout the Pampas (i.e., mixed landscapes) is important for preserving species richness of birds. But several threatened grassland specialists inhabiting the Pampas, such as Rhea americana and Asthenes hudsoni, are found exclusively in pastoral landscapes, so the long-term survival of these species will depend on the conservation of this landscape type. © The Cooper Ornithological Society 2013.

Registro:

Documento: Artículo
Título:Landbird assemblages in different agricultural landscapes: A case study in the Pampas of central Argentina
Autor:Codesido, M.; González-Fischer, C.M.; Bilenca, D.N.
Filiación:Grupo de Estudios Sobre Biodiversidad en Agroecosistemas (GEBA), Departamento de Biodiversidad y Biología Experimental, Universidad de Buenos Aires and IEGEBA (UBA-CONICET), Argentina
Palabras clave:Agroecosystem; Grassland bird species; Land use; Matrix; Neotropical region
Año:2013
Volumen:115
Número:1
Página de inicio:8
Página de fin:16
DOI: http://dx.doi.org/10.1525/cond.2012.120011
Título revista:Condor
Título revista abreviado:Condor
ISSN:00105422
CODEN:CNDRA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00105422_v115_n1_p8_Codesido

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Citas:

---------- APA ----------
Codesido, M., González-Fischer, C.M. & Bilenca, D.N. (2013) . Landbird assemblages in different agricultural landscapes: A case study in the Pampas of central Argentina. Condor, 115(1), 8-16.
http://dx.doi.org/10.1525/cond.2012.120011
---------- CHICAGO ----------
Codesido, M., González-Fischer, C.M., Bilenca, D.N. "Landbird assemblages in different agricultural landscapes: A case study in the Pampas of central Argentina" . Condor 115, no. 1 (2013) : 8-16.
http://dx.doi.org/10.1525/cond.2012.120011
---------- MLA ----------
Codesido, M., González-Fischer, C.M., Bilenca, D.N. "Landbird assemblages in different agricultural landscapes: A case study in the Pampas of central Argentina" . Condor, vol. 115, no. 1, 2013, pp. 8-16.
http://dx.doi.org/10.1525/cond.2012.120011
---------- VANCOUVER ----------
Codesido, M., González-Fischer, C.M., Bilenca, D.N. Landbird assemblages in different agricultural landscapes: A case study in the Pampas of central Argentina. Condor. 2013;115(1):8-16.
http://dx.doi.org/10.1525/cond.2012.120011