Distributional changes of landbird species in agroecosystems of central Argentina

We present the first quantitative comparative study between current (2006-2008) distributions of landbird and those recorded prior to the massive planting of transgenic soy beans in the Pampas of central Argentina (Narosky and Di Giacomo 1993). We surveyed landbirds along transects covering 23 count...

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Autores principales:	Codesido, Mariano, González Fischer, Carlos María, Bilenca, David Norberto
Publicado:	2011
Materias:	Agricultural intensification Agroecosystem Argentina Grassland birds Pampas Aves Embernagra platensis Glycine max Hymenops perspicillatus Pseudoleistes virescens
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00105422_v113_n2_p266_Codesido http://hdl.handle.net/20.500.12110/paper_00105422_v113_n2_p266_Codesido
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00105422_v113_n2_p266_Codesido
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spelling	paper:paper_00105422_v113_n2_p266_Codesido2023-06-08T14:34:35Z Distributional changes of landbird species in agroecosystems of central Argentina Codesido, Mariano González Fischer, Carlos María Bilenca, David Norberto Agricultural intensification Agroecosystem Argentina Grassland birds Pampas Aves Embernagra platensis Glycine max Hymenops perspicillatus Pseudoleistes virescens We present the first quantitative comparative study between current (2006-2008) distributions of landbird and those recorded prior to the massive planting of transgenic soy beans in the Pampas of central Argentina (Narosky and Di Giacomo 1993). We surveyed landbirds along transects covering 23 counties of Buenos Aires province. To allow a comparison between our observations and those of Narosky and Di Giacomo, we used the number of counties in which each species was recorded as an estimate of current and past distributions. We found grassland and wetland specialists in significantly fewer counties than did Narosky and Di Giacomo (P < 0.05), while habitat generalists and woodland specialists showed no significant change. The earlier study, however, covered a longer period of time, which could explain the reduction of wetland dwellers as a result of variation in the supply of temporary water bodies. The decreased area of occupancy of grassland specialists, on the other hand, may reflect the reduction of native grasslands due to increased agricultural cultivation, particularly in the Rolling Pampa, where agricultural expansion has left few remnant grasslands and we did not detect three formerly common grassland specialists, Hymenops perspicillatus, Embernagra platensis, and Pseudoleistes virescens. These findings emphasize the need for conservation actions to support populations of grassland bird in the Pampas. © The Cooper Ornithological Society 2011. Fil:Codesido, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:González-Fischer, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bilenca, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00105422_v113_n2_p266_Codesido http://hdl.handle.net/20.500.12110/paper_00105422_v113_n2_p266_Codesido
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Agricultural intensification Agroecosystem Argentina Grassland birds Pampas Aves Embernagra platensis Glycine max Hymenops perspicillatus Pseudoleistes virescens
spellingShingle	Agricultural intensification Agroecosystem Argentina Grassland birds Pampas Aves Embernagra platensis Glycine max Hymenops perspicillatus Pseudoleistes virescens Codesido, Mariano González Fischer, Carlos María Bilenca, David Norberto Distributional changes of landbird species in agroecosystems of central Argentina
topic_facet	Agricultural intensification Agroecosystem Argentina Grassland birds Pampas Aves Embernagra platensis Glycine max Hymenops perspicillatus Pseudoleistes virescens
description	We present the first quantitative comparative study between current (2006-2008) distributions of landbird and those recorded prior to the massive planting of transgenic soy beans in the Pampas of central Argentina (Narosky and Di Giacomo 1993). We surveyed landbirds along transects covering 23 counties of Buenos Aires province. To allow a comparison between our observations and those of Narosky and Di Giacomo, we used the number of counties in which each species was recorded as an estimate of current and past distributions. We found grassland and wetland specialists in significantly fewer counties than did Narosky and Di Giacomo (P < 0.05), while habitat generalists and woodland specialists showed no significant change. The earlier study, however, covered a longer period of time, which could explain the reduction of wetland dwellers as a result of variation in the supply of temporary water bodies. The decreased area of occupancy of grassland specialists, on the other hand, may reflect the reduction of native grasslands due to increased agricultural cultivation, particularly in the Rolling Pampa, where agricultural expansion has left few remnant grasslands and we did not detect three formerly common grassland specialists, Hymenops perspicillatus, Embernagra platensis, and Pseudoleistes virescens. These findings emphasize the need for conservation actions to support populations of grassland bird in the Pampas. © The Cooper Ornithological Society 2011.
author	Codesido, Mariano González Fischer, Carlos María Bilenca, David Norberto
author_facet	Codesido, Mariano González Fischer, Carlos María Bilenca, David Norberto
author_sort	Codesido, Mariano
title	Distributional changes of landbird species in agroecosystems of central Argentina
title_short	Distributional changes of landbird species in agroecosystems of central Argentina
title_full	Distributional changes of landbird species in agroecosystems of central Argentina
title_fullStr	Distributional changes of landbird species in agroecosystems of central Argentina
title_full_unstemmed	Distributional changes of landbird species in agroecosystems of central Argentina
title_sort	distributional changes of landbird species in agroecosystems of central argentina
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00105422_v113_n2_p266_Codesido http://hdl.handle.net/20.500.12110/paper_00105422_v113_n2_p266_Codesido
work_keys_str_mv	AT codesidomariano distributionalchangesoflandbirdspeciesinagroecosystemsofcentralargentina AT gonzalezfischercarlosmaria distributionalchangesoflandbirdspeciesinagroecosystemsofcentralargentina AT bilencadavidnorberto distributionalchangesoflandbirdspeciesinagroecosystemsofcentralargentina
_version_	1768542155538694144

Distributional changes of landbird species in agroecosystems of central Argentina

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