Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics
Bird species are adapted to certain ranges of physical conditions and will respond to environmental heterogeneity depending on their ability to exploit a broad range of resources and their tolerance to new environmental conditions. We used the rufous-collared sparrow as a model to explore how the ab...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11956860_v18_n4_p354_Bellocq http://hdl.handle.net/20.500.12110/paper_11956860_v18_n4_p354_Bellocq |
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paper:paper_11956860_v18_n4_p354_Bellocq2023-06-08T16:09:59Z Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics Bellocq, Maria Isabel Filloy, Julieta Zurita, Gustavo Andrés Apellaniz, Melisa F. abundance generalist species human-modified habitats Neotropical birds rufouscollared sparrow spatial patterns abundance adaptation agricultural practice anthropogenic effect ecological impact environmental conditions environmental gradient generalist heterogeneity human activity land use change native species nature-society relations Neotropical Region primary production songbird spatial analysis tolerance urbanization Aves Passeriformes Zonotrichia capensis Bird species are adapted to certain ranges of physical conditions and will respond to environmental heterogeneity depending on their ability to exploit a broad range of resources and their tolerance to new environmental conditions. We used the rufous-collared sparrow as a model to explore how the abundance of generalist passerine birds may vary along environmental gradients in the southern Neotropics. We analyzed variations in the abundance along 6 gradients expressing variations in climate, productivity, the proportion of native forest in the landscape, the proportion of vegetation types through the transition between regions, and the intensity of human activities (agriculture, urbanization). The rufous-collared sparrow was most abundant in seasonal and semi-arid climates. Thermal amplitude was the best climatic predictor of the species abundance at the large scale. Within regions where climatic conditions are relatively homogeneous, land use better predicted abundance patterns. The species responded positively to increasing primary productivity, agricultural intensity, and native forest degradation and conversion and negatively to increasing urbanization. The rufous-collared sparrow adapts successfully to new environments created by human activities such as agriculture, ranching, forestry, and urbanization. Some native species may be tolerant to certain types and intensity of human activities, and knowledge of how they respond to both natural and human-created environments may help efforts to anticipate the impact of human activities on native birds in a changing world. Fil:Bellocq, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Filloy, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Zurita, G.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Apellaniz, M.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11956860_v18_n4_p354_Bellocq http://hdl.handle.net/20.500.12110/paper_11956860_v18_n4_p354_Bellocq |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
abundance generalist species human-modified habitats Neotropical birds rufouscollared sparrow spatial patterns abundance adaptation agricultural practice anthropogenic effect ecological impact environmental conditions environmental gradient generalist heterogeneity human activity land use change native species nature-society relations Neotropical Region primary production songbird spatial analysis tolerance urbanization Aves Passeriformes Zonotrichia capensis |
| spellingShingle |
abundance generalist species human-modified habitats Neotropical birds rufouscollared sparrow spatial patterns abundance adaptation agricultural practice anthropogenic effect ecological impact environmental conditions environmental gradient generalist heterogeneity human activity land use change native species nature-society relations Neotropical Region primary production songbird spatial analysis tolerance urbanization Aves Passeriformes Zonotrichia capensis Bellocq, Maria Isabel Filloy, Julieta Zurita, Gustavo Andrés Apellaniz, Melisa F. Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics |
| topic_facet |
abundance generalist species human-modified habitats Neotropical birds rufouscollared sparrow spatial patterns abundance adaptation agricultural practice anthropogenic effect ecological impact environmental conditions environmental gradient generalist heterogeneity human activity land use change native species nature-society relations Neotropical Region primary production songbird spatial analysis tolerance urbanization Aves Passeriformes Zonotrichia capensis |
| description |
Bird species are adapted to certain ranges of physical conditions and will respond to environmental heterogeneity depending on their ability to exploit a broad range of resources and their tolerance to new environmental conditions. We used the rufous-collared sparrow as a model to explore how the abundance of generalist passerine birds may vary along environmental gradients in the southern Neotropics. We analyzed variations in the abundance along 6 gradients expressing variations in climate, productivity, the proportion of native forest in the landscape, the proportion of vegetation types through the transition between regions, and the intensity of human activities (agriculture, urbanization). The rufous-collared sparrow was most abundant in seasonal and semi-arid climates. Thermal amplitude was the best climatic predictor of the species abundance at the large scale. Within regions where climatic conditions are relatively homogeneous, land use better predicted abundance patterns. The species responded positively to increasing primary productivity, agricultural intensity, and native forest degradation and conversion and negatively to increasing urbanization. The rufous-collared sparrow adapts successfully to new environments created by human activities such as agriculture, ranching, forestry, and urbanization. Some native species may be tolerant to certain types and intensity of human activities, and knowledge of how they respond to both natural and human-created environments may help efforts to anticipate the impact of human activities on native birds in a changing world. |
| author |
Bellocq, Maria Isabel Filloy, Julieta Zurita, Gustavo Andrés Apellaniz, Melisa F. |
| author_facet |
Bellocq, Maria Isabel Filloy, Julieta Zurita, Gustavo Andrés Apellaniz, Melisa F. |
| author_sort |
Bellocq, Maria Isabel |
| title |
Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics |
| title_short |
Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics |
| title_full |
Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics |
| title_fullStr |
Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics |
| title_full_unstemmed |
Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics |
| title_sort |
responses in the abundance of generalist birds to environmental gradients: the rufous-collared sparrow (zonotrichia capensis) in the southern neotropics |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11956860_v18_n4_p354_Bellocq http://hdl.handle.net/20.500.12110/paper_11956860_v18_n4_p354_Bellocq |
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1768546173840261120 |