Variations in pest bird density in Argentinean agroecosystems in relation to land use and/or cover, vegetation productivity and climate
Context: Changes in environmental conditions may influence bird populations, including pest bird species, and their distribution. In Argentina, particularly in the Pampas region, agricultural expansion has resulted in important changes in agroecosystems, with impacts on bird species. Aims: This stu...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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CSIRO
2018
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| Online Access: | http://www.publish.csiro.au/wr/WR17167 http://hdl.handle.net/20.500.12123/4131 https://doi.org/10.1071/WR17167 |
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| author | Calamari, Noelia Cecilia Canavelli, Sonia Beatriz Cerezo, Alexis Dardanelli, Sebastian Bernardos, Jaime Nicolás Zaccagnini, Maria Elena |
| author_browse | Bernardos, Jaime Nicolás Calamari, Noelia Cecilia Canavelli, Sonia Beatriz Cerezo, Alexis Dardanelli, Sebastian Zaccagnini, Maria Elena |
| author_facet | Calamari, Noelia Cecilia Canavelli, Sonia Beatriz Cerezo, Alexis Dardanelli, Sebastian Bernardos, Jaime Nicolás Zaccagnini, Maria Elena |
| author_sort | Calamari, Noelia Cecilia |
| collection | INTA Digital |
| description | Context: Changes in environmental conditions may influence bird populations, including pest bird species, and their distribution. In Argentina, particularly in the Pampas region, agricultural expansion has resulted in important changes in agroecosystems, with impacts on bird species.
Aims: This study analysed the relationship between pest bird densities and the environmental variables associated with land use and/or cover, vegetation productivity and climate. The study focused on the most important pest bird species to grain crops in Argentina and Uruguay: the eared dove (Zenaida auriculata) and the monk parakeet (Myiopsitta monachus).
Methods: An area in Central Argentina was divided into three agro-productive regions, one predominantly agricultural and two with mixed production activities: agricultural rangeland and agricultural forested rangeland. Bird populations were sampled on a yearly basis between 2003 and 2011 in point-transects located along secondary roads (47 routes in total). Linear mixed models and a multi-model inference approach were used to compare the effects of individual predictive variables on bird densities.
Key results: Mean estimated density for the eared dove was 0.39 individuals per ha (±0.02), almost three times the density of the monk parakeet (0.10 individuals per ha ± 0.02). The spatial distribution of changes in density of the eared dove and monk parakeet showed irregular patterns across the study area. Density of eared dove was directly related to cover of native and exotic woodlots and inversely related to cover of fallow and weedy fields, and to temperature and rainfall. Monk parakeet density, in turn, was directly related to cover of woodlots.
Conclusions: The density of eared doves and monk parakeets changed mostly in relation to land use and/or cover and, to a lesser extent, to climatic conditions. Information of pest bird populations in a long-term period allowed us to understand spatial patterns in bird population distribution and to identify the main environmental factors explaining them.
Implications: The consideration of land use and/or cover, vegetation productivity and climate variables at regional scale, measured during a long-term period, would be critical for anticipating population increases and, possibly, increases in crop damage. |
| format | info:ar-repo/semantics/artículo |
| id | INTA4131 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | CSIRO |
| publisherStr | CSIRO |
| record_format | dspace |
| spelling | INTA41312018-12-21T12:04:38Z Variations in pest bird density in Argentinean agroecosystems in relation to land use and/or cover, vegetation productivity and climate Calamari, Noelia Cecilia Canavelli, Sonia Beatriz Cerezo, Alexis Dardanelli, Sebastian Bernardos, Jaime Nicolás Zaccagnini, Maria Elena Pájaros Control de Plagas Agroecosistemas Clima Pájaros Nocivos Utilización de la Tierra Birds Pest Control Agroecosystems Climate Noxious Birds Land Use Aves Argentina Context: Changes in environmental conditions may influence bird populations, including pest bird species, and their distribution. In Argentina, particularly in the Pampas region, agricultural expansion has resulted in important changes in agroecosystems, with impacts on bird species. Aims: This study analysed the relationship between pest bird densities and the environmental variables associated with land use and/or cover, vegetation productivity and climate. The study focused on the most important pest bird species to grain crops in Argentina and Uruguay: the eared dove (Zenaida auriculata) and the monk parakeet (Myiopsitta monachus). Methods: An area in Central Argentina was divided into three agro-productive regions, one predominantly agricultural and two with mixed production activities: agricultural rangeland and agricultural forested rangeland. Bird populations were sampled on a yearly basis between 2003 and 2011 in point-transects located along secondary roads (47 routes in total). Linear mixed models and a multi-model inference approach were used to compare the effects of individual predictive variables on bird densities. Key results: Mean estimated density for the eared dove was 0.39 individuals per ha (±0.02), almost three times the density of the monk parakeet (0.10 individuals per ha ± 0.02). The spatial distribution of changes in density of the eared dove and monk parakeet showed irregular patterns across the study area. Density of eared dove was directly related to cover of native and exotic woodlots and inversely related to cover of fallow and weedy fields, and to temperature and rainfall. Monk parakeet density, in turn, was directly related to cover of woodlots. Conclusions: The density of eared doves and monk parakeets changed mostly in relation to land use and/or cover and, to a lesser extent, to climatic conditions. Information of pest bird populations in a long-term period allowed us to understand spatial patterns in bird population distribution and to identify the main environmental factors explaining them. Implications: The consideration of land use and/or cover, vegetation productivity and climate variables at regional scale, measured during a long-term period, would be critical for anticipating population increases and, possibly, increases in crop damage. EEA Paraná Fil: Calamari, Noelia Cecilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina Fil: Canavelli, Sonia Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina Fil: Cerezo, Alexis. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos; Argentina Fil: Dardanelli, Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina Fil: Bernardos, Jaime Nicolás. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina Fil: Zaccagnini, Maria Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina 2018-12-21T12:02:13Z 2018-12-21T12:02:13Z 2018-12-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://www.publish.csiro.au/wr/WR17167 http://hdl.handle.net/20.500.12123/4131 1035-3712 1448-5494 https://doi.org/10.1071/WR17167 eng info:eu-repo/semantics/restrictedAccess application/pdf CSIRO Wildlife Research 45 (8) : 668-678 (December 2018) |
| spellingShingle | Pájaros Control de Plagas Agroecosistemas Clima Pájaros Nocivos Utilización de la Tierra Birds Pest Control Agroecosystems Climate Noxious Birds Land Use Aves Argentina Calamari, Noelia Cecilia Canavelli, Sonia Beatriz Cerezo, Alexis Dardanelli, Sebastian Bernardos, Jaime Nicolás Zaccagnini, Maria Elena Variations in pest bird density in Argentinean agroecosystems in relation to land use and/or cover, vegetation productivity and climate |
| title | Variations in pest bird density in Argentinean agroecosystems in relation to land use and/or cover, vegetation productivity and climate |
| title_full | Variations in pest bird density in Argentinean agroecosystems in relation to land use and/or cover, vegetation productivity and climate |
| title_fullStr | Variations in pest bird density in Argentinean agroecosystems in relation to land use and/or cover, vegetation productivity and climate |
| title_full_unstemmed | Variations in pest bird density in Argentinean agroecosystems in relation to land use and/or cover, vegetation productivity and climate |
| title_short | Variations in pest bird density in Argentinean agroecosystems in relation to land use and/or cover, vegetation productivity and climate |
| title_sort | variations in pest bird density in argentinean agroecosystems in relation to land use and or cover vegetation productivity and climate |
| topic | Pájaros Control de Plagas Agroecosistemas Clima Pájaros Nocivos Utilización de la Tierra Birds Pest Control Agroecosystems Climate Noxious Birds Land Use Aves Argentina |
| url | http://www.publish.csiro.au/wr/WR17167 http://hdl.handle.net/20.500.12123/4131 https://doi.org/10.1071/WR17167 |
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