Occupancy of avian foraging guilds in soybean fields and borders in Entre Ríos, Argentina: responses to vegetation structure and prey resources
Reconciling agriculture and biodiversity conservation is a challenge given the growing demand for agricultural products. In recent decades, Argentina has witnessed agricultural expansion and intensification affecting biodiversity and associated ecosystem services. Within agroecosystems, the level of...
| Autores principales: | , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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BMC
2020
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/8394 https://avianres.biomedcentral.com/articles/10.1186/s40657-020-00235-4 https://doi.org/10.1186/s40657-020-00235-4 |
| _version_ | 1855036028012724224 |
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| author | Goijman, Andrea Paula Conroy, Michael J. Varni, Vanina Delia Thompson, Jeffrey Zaccagnini, Maria Elena |
| author_browse | Conroy, Michael J. Goijman, Andrea Paula Thompson, Jeffrey Varni, Vanina Delia Zaccagnini, Maria Elena |
| author_facet | Goijman, Andrea Paula Conroy, Michael J. Varni, Vanina Delia Thompson, Jeffrey Zaccagnini, Maria Elena |
| author_sort | Goijman, Andrea Paula |
| collection | INTA Digital |
| description | Reconciling agriculture and biodiversity conservation is a challenge given the growing demand for agricultural products. In recent decades, Argentina has witnessed agricultural expansion and intensification affecting biodiversity and associated ecosystem services. Within agroecosystems, the level of habitat quality is critical for birds, and may depend on vegetation structure, availability of invertebrate prey, and the use of pesticides. Although the relationship between vegetation structure and avian occurrence has been widely studied, to our knowledge, there are no studies that also incorporate prey availability throughout the cycle of soybean crops in Argentina. We estimated and predicted the effects of land cover and temporal variation on the occurrence of avian foraging guilds in Entre Ríos, Argentina, in order to guide management related to potential ecosystem services provided by birds. We also estimated temporal effects of vegetation structure and insecticides on the main arthropod orders consumed by birds to evaluate prey availability.
Methods: We conducted bird and arthropod surveys for 2 years along transects located in 20 randomly selected soybean fields (N = 60) and their adjacent borders (N = 78) throughout the crop growing season, in four seasons. We estimated avian occupancy, accounting for imperfect detection, and arthropod counts fitting generalized linear mixed models.
Results: The number of native trees in field borders positively influenced the occurrence of most bird species, mainly insectivores. Granivore foliage gleaners, also were positively affected by grass height. Salliers and aerial foragers were weakly affected by distance to forest and native trees. In general, the availability of invertebrates to birds was highest during the third season. Arthropod counts in borders were greater during the last three crop stages than during the pre-sowing period.
Conclusions: We found that with 10 to 15 native tree species in borders, coupled with a complex vegetation structure with shrubs and grasses, we could conserve a wide spectrum of insectivorous birds, and may contribute to the invertebrate pest control service. Vegetated field borders function as a refuge for arthropods, especially agriculturally beneficial taxa such as Hymenopterans. Finally, several groups of birds use the interior of the fields and could help control pests. |
| format | info:ar-repo/semantics/artículo |
| id | INTA8394 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | BMC |
| publisherStr | BMC |
| record_format | dspace |
| spelling | INTA83942020-12-11T12:57:34Z Occupancy of avian foraging guilds in soybean fields and borders in Entre Ríos, Argentina: responses to vegetation structure and prey resources Goijman, Andrea Paula Conroy, Michael J. Varni, Vanina Delia Thompson, Jeffrey Zaccagnini, Maria Elena Aves Ecosistema Soja Vegetación Servicios de los Ecosistemas Ecosystems Soybeans Vegetation Ecosystem Services Entre Ríos, Argentina Reconciling agriculture and biodiversity conservation is a challenge given the growing demand for agricultural products. In recent decades, Argentina has witnessed agricultural expansion and intensification affecting biodiversity and associated ecosystem services. Within agroecosystems, the level of habitat quality is critical for birds, and may depend on vegetation structure, availability of invertebrate prey, and the use of pesticides. Although the relationship between vegetation structure and avian occurrence has been widely studied, to our knowledge, there are no studies that also incorporate prey availability throughout the cycle of soybean crops in Argentina. We estimated and predicted the effects of land cover and temporal variation on the occurrence of avian foraging guilds in Entre Ríos, Argentina, in order to guide management related to potential ecosystem services provided by birds. We also estimated temporal effects of vegetation structure and insecticides on the main arthropod orders consumed by birds to evaluate prey availability. Methods: We conducted bird and arthropod surveys for 2 years along transects located in 20 randomly selected soybean fields (N = 60) and their adjacent borders (N = 78) throughout the crop growing season, in four seasons. We estimated avian occupancy, accounting for imperfect detection, and arthropod counts fitting generalized linear mixed models. Results: The number of native trees in field borders positively influenced the occurrence of most bird species, mainly insectivores. Granivore foliage gleaners, also were positively affected by grass height. Salliers and aerial foragers were weakly affected by distance to forest and native trees. In general, the availability of invertebrates to birds was highest during the third season. Arthropod counts in borders were greater during the last three crop stages than during the pre-sowing period. Conclusions: We found that with 10 to 15 native tree species in borders, coupled with a complex vegetation structure with shrubs and grasses, we could conserve a wide spectrum of insectivorous birds, and may contribute to the invertebrate pest control service. Vegetated field borders function as a refuge for arthropods, especially agriculturally beneficial taxa such as Hymenopterans. Finally, several groups of birds use the interior of the fields and could help control pests. Instituto de Recursos Biológicos Fil: Goijman, Andrea Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina. University of Georgia. D.B. Warnell School of Forestry and Natural Resources; Estados Unidos Fil: Conroy, Michael J. University of Georgia. D.B. Warnell School of Forestry and Natural Resources; Estados Unidos Fil: Varni, Vanina Delia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina Fil: Thompson, Jeffrey. Guyra Paraguay – CONACYT; Paraguay. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina. Fil: Zaccagnini, Maria Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina 2020-12-11T12:55:01Z 2020-12-11T12:55:01Z 2020-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/8394 https://avianres.biomedcentral.com/articles/10.1186/s40657-020-00235-4 2053-7166 https://doi.org/10.1186/s40657-020-00235-4 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf BMC Avian Research 11 : Article number: 48 (2020) |
| spellingShingle | Aves Ecosistema Soja Vegetación Servicios de los Ecosistemas Ecosystems Soybeans Vegetation Ecosystem Services Entre Ríos, Argentina Goijman, Andrea Paula Conroy, Michael J. Varni, Vanina Delia Thompson, Jeffrey Zaccagnini, Maria Elena Occupancy of avian foraging guilds in soybean fields and borders in Entre Ríos, Argentina: responses to vegetation structure and prey resources |
| title | Occupancy of avian foraging guilds in soybean fields and borders in Entre Ríos, Argentina: responses to vegetation structure and prey resources |
| title_full | Occupancy of avian foraging guilds in soybean fields and borders in Entre Ríos, Argentina: responses to vegetation structure and prey resources |
| title_fullStr | Occupancy of avian foraging guilds in soybean fields and borders in Entre Ríos, Argentina: responses to vegetation structure and prey resources |
| title_full_unstemmed | Occupancy of avian foraging guilds in soybean fields and borders in Entre Ríos, Argentina: responses to vegetation structure and prey resources |
| title_short | Occupancy of avian foraging guilds in soybean fields and borders in Entre Ríos, Argentina: responses to vegetation structure and prey resources |
| title_sort | occupancy of avian foraging guilds in soybean fields and borders in entre rios argentina responses to vegetation structure and prey resources |
| topic | Aves Ecosistema Soja Vegetación Servicios de los Ecosistemas Ecosystems Soybeans Vegetation Ecosystem Services Entre Ríos, Argentina |
| url | http://hdl.handle.net/20.500.12123/8394 https://avianres.biomedcentral.com/articles/10.1186/s40657-020-00235-4 https://doi.org/10.1186/s40657-020-00235-4 |
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