Differential use of crop and livestock fields by land birds in the Pampas region, Argentina
During the last decades, the Pampas Region of Argentina has witnessed an expansion of the croplands at the expense of grasslands and pastures. As a result of no-till system, after harvesting the region shows large areas with stubbles. The aim of this study is to describe the assemblage of land birds...
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2016
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00733407_v31_n1_p_Zufiaurre http://hdl.handle.net/20.500.12110/paper_00733407_v31_n1_p_Zufiaurre |
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paper:paper_00733407_v31_n1_p_Zufiaurre2023-06-08T15:06:40Z Differential use of crop and livestock fields by land birds in the Pampas region, Argentina Abundance Agroecosystems Land use Local scale Species richness Stubbles Trophic guild Zenaida auriculata During the last decades, the Pampas Region of Argentina has witnessed an expansion of the croplands at the expense of grasslands and pastures. As a result of no-till system, after harvesting the region shows large areas with stubbles. The aim of this study is to describe the assemblage of land birds and compare species richness and abundance at the community guild levels in crop and livestock fields during two contrasting periods of the year, when croplands remains at stubbles stage. Twenty-five sites were selected and in each one four samplings were conducted: two in spring-summer and two in autumn. In each site and each sampling, two crop and two livestock fields were chosen, totalling 392 fields. Birds were recorded in each field using a linear transect of 700 m by 100 m. Seventy-five species were recorded. Livestock fields supported greater species richness than crop fields throughout the study, provided by highest insectivore species richness. In spring-summer, there was a higher abundance in livestock fields, mainly of insectivore birds. There were not significant differences in species richness and abundance of granivorous birds between land uses, even though in autumn there was a sharp differential use of crop fields by the granivorous species Zenaida auriculata, which accounted for 36% of total abundance in crop fields during that period. The results show that there is an impoverishment of the bird assemblage in crop fields with regard to livestock fields and it can be expected that these trends will be accentuated as long as the substitution between these different land uses deepens. © 2016, Association Ornitologica del Plata. All rights reserved. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00733407_v31_n1_p_Zufiaurre http://hdl.handle.net/20.500.12110/paper_00733407_v31_n1_p_Zufiaurre |
| 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 Agroecosystems Land use Local scale Species richness Stubbles Trophic guild Zenaida auriculata |
| spellingShingle |
Abundance Agroecosystems Land use Local scale Species richness Stubbles Trophic guild Zenaida auriculata Differential use of crop and livestock fields by land birds in the Pampas region, Argentina |
| topic_facet |
Abundance Agroecosystems Land use Local scale Species richness Stubbles Trophic guild Zenaida auriculata |
| description |
During the last decades, the Pampas Region of Argentina has witnessed an expansion of the croplands at the expense of grasslands and pastures. As a result of no-till system, after harvesting the region shows large areas with stubbles. The aim of this study is to describe the assemblage of land birds and compare species richness and abundance at the community guild levels in crop and livestock fields during two contrasting periods of the year, when croplands remains at stubbles stage. Twenty-five sites were selected and in each one four samplings were conducted: two in spring-summer and two in autumn. In each site and each sampling, two crop and two livestock fields were chosen, totalling 392 fields. Birds were recorded in each field using a linear transect of 700 m by 100 m. Seventy-five species were recorded. Livestock fields supported greater species richness than crop fields throughout the study, provided by highest insectivore species richness. In spring-summer, there was a higher abundance in livestock fields, mainly of insectivore birds. There were not significant differences in species richness and abundance of granivorous birds between land uses, even though in autumn there was a sharp differential use of crop fields by the granivorous species Zenaida auriculata, which accounted for 36% of total abundance in crop fields during that period. The results show that there is an impoverishment of the bird assemblage in crop fields with regard to livestock fields and it can be expected that these trends will be accentuated as long as the substitution between these different land uses deepens. © 2016, Association Ornitologica del Plata. All rights reserved. |
| title |
Differential use of crop and livestock fields by land birds in the Pampas region, Argentina |
| title_short |
Differential use of crop and livestock fields by land birds in the Pampas region, Argentina |
| title_full |
Differential use of crop and livestock fields by land birds in the Pampas region, Argentina |
| title_fullStr |
Differential use of crop and livestock fields by land birds in the Pampas region, Argentina |
| title_full_unstemmed |
Differential use of crop and livestock fields by land birds in the Pampas region, Argentina |
| title_sort |
differential use of crop and livestock fields by land birds in the pampas region, argentina |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00733407_v31_n1_p_Zufiaurre http://hdl.handle.net/20.500.12110/paper_00733407_v31_n1_p_Zufiaurre |
| _version_ |
1768545179888779264 |