Density, habitat use, and opportunities for conservation of shorebirds in rice fields in southeastern South America
Worldwide, shorebirds are a major component of rice field avian biodiversity. Rice fields in Argentina and southern Brazil hold large numbers of shorebirds and have been recognized as important areas for migrating or wintering species. To develop successful shorebird conservation strategies, we need...
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| Format: | Artículo |
| Language: | Inglés |
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Bioone
2018
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| Online Access: | http://www.bioone.org/doi/abs/10.1650/CONDOR-13-160.1 http://hdl.handle.net/20.500.12123/3894 https://doi.org/10.1650/CONDOR-13-160.1 |
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| author | Dias, Rafael Antunes Blanco, Daniel E. Goijman, Andrea Paula Zaccagnini, Maria Elena |
| author_browse | Blanco, Daniel E. Dias, Rafael Antunes Goijman, Andrea Paula Zaccagnini, Maria Elena |
| author_facet | Dias, Rafael Antunes Blanco, Daniel E. Goijman, Andrea Paula Zaccagnini, Maria Elena |
| author_sort | Dias, Rafael Antunes |
| collection | INTA Digital |
| description | Worldwide, shorebirds are a major component of rice field avian biodiversity. Rice fields in Argentina and southern Brazil hold large numbers of shorebirds and have been recognized as important areas for migrating or wintering species. To develop successful shorebird conservation strategies, we need to understand geographic variation in shorebird abundance in rice fields as well as how bird use of rice fields varies over the rice growing cycle. We surveyed shorebirds in November and December in the main rice cultivation regions of interior Argentina and coastal Brazil to estimate shorebird densities using distance sampling and to evaluate densities of individual species at different stages of the rice cycle. We detected >7,000 shorebirds in rice fields, including a variety of Nearctic migrants. Density of resident species was generally low and showed no differences between countries. Densities of migratory taxa were higher and varied between Brazil and Argentina. Pectoral Sandpiper (Calidris melanotos) and Lesser Yellowlegs (Tringa flavipes) were the most common species in Argentina, but White-rumped Sandpiper (Calidris fuscicollis) and American Golden-Plover (Pluvialis dominica) were the most common species in Brazil. Pectoral Sandpiper density was nearly 8 times higher in Argentina than in Brazil; densities of the White-rumped Sandpiper and American Golden-Plover were 33 and 25 times higher in Brazil than in Argentina. Shorebird density was highest in lightly flooded paddies with rice height <20 cm. Our findings confirm the importance of rice paddies for shorebirds in southeastern South America and emphasize the need for detailed assessments to ensure that agricultural chemical and water management practices are biodiversity friendly. |
| format | Artículo |
| id | INTA3894 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Bioone |
| publisherStr | Bioone |
| record_format | dspace |
| spelling | INTA38942018-11-14T15:34:22Z Density, habitat use, and opportunities for conservation of shorebirds in rice fields in southeastern South America Dias, Rafael Antunes Blanco, Daniel E. Goijman, Andrea Paula Zaccagnini, Maria Elena Aves Biodiversidad Agroecosistemas Cultivos Arroz Agroquímicos Biodiversity Agroecosystems Crops Rice Agrochemicals Aves Playeras Sudamérica Argentina Brasil Worldwide, shorebirds are a major component of rice field avian biodiversity. Rice fields in Argentina and southern Brazil hold large numbers of shorebirds and have been recognized as important areas for migrating or wintering species. To develop successful shorebird conservation strategies, we need to understand geographic variation in shorebird abundance in rice fields as well as how bird use of rice fields varies over the rice growing cycle. We surveyed shorebirds in November and December in the main rice cultivation regions of interior Argentina and coastal Brazil to estimate shorebird densities using distance sampling and to evaluate densities of individual species at different stages of the rice cycle. We detected >7,000 shorebirds in rice fields, including a variety of Nearctic migrants. Density of resident species was generally low and showed no differences between countries. Densities of migratory taxa were higher and varied between Brazil and Argentina. Pectoral Sandpiper (Calidris melanotos) and Lesser Yellowlegs (Tringa flavipes) were the most common species in Argentina, but White-rumped Sandpiper (Calidris fuscicollis) and American Golden-Plover (Pluvialis dominica) were the most common species in Brazil. Pectoral Sandpiper density was nearly 8 times higher in Argentina than in Brazil; densities of the White-rumped Sandpiper and American Golden-Plover were 33 and 25 times higher in Brazil than in Argentina. Shorebird density was highest in lightly flooded paddies with rice height <20 cm. Our findings confirm the importance of rice paddies for shorebirds in southeastern South America and emphasize the need for detailed assessments to ensure that agricultural chemical and water management practices are biodiversity friendly. A nivel global, las aves playeras son uno de los componentes principales de la biodiversidad de avifauna de los campos de arroz. Estos campos en Argentina y el sur de Brasil sustentan grandes números de aves playeras y han sido reconocidos como áreas importantes para especies migratorias o invernantes. Para desarrollar estrategias exitosas de conservación de las aves playeras, necesitamos entender la variación geográfica de la abundancia de las aves playeras en los campos de arroz, así como las variaciones del uso de los campos de arroz a lo largo del ciclo de crecimiento de este cultivo. Con este objetivo, estudiamos las aves playeras en noviembre y diciembre en las principales regiones de cultivo de arroz del interior de Argentina y la costa de Brasil. Estimamos las densidades de aves playeras usando muestreos por distancia y evaluamos las densidades de especies individuales en diferentes etapas del ciclo del arroz. Detectamos >7000 aves playeras en los campos de arroz, incluyendo una variedad de migrantes neárticos. La densidad de las especies residentes fue generalmente baja y no mostró diferencias entre países. Las densidades de los taxa migratorios fueron mayores y variaron entre Brasil y Argentina. Calidris melanotos y Tringa flavipes fueron las especies más comunes en Argentina, mientras que Calidris fuscicollis y Pluvialis dominica fueron las especies más comunes en Brasil. La densidad de C. melanotos fue casi ocho veces mayor en Argentina que en Brasil; las densidades de C. fuscicollis y P. dominica fueron 33 y 25 veces mayores en Brasil que en Argentina. La densidad de aves playeras fue mayor en los arrozales someramente inundados con alturas de arroz < 20 cm. Nuestros resultados confirman la importancia de los arrozales para las aves playeras en el sudeste de América del Sur y enfatizan la necesidad de evaluaciones detalladas para asegurar que las prácticas de manejo de los agroquímicos y del agua son amigables con la biodiversidad. Instituto de Recursos Biológicos Fil: Dias, Rafael Antunes. Universidade Católica de Pelotas. Laboratório de Ecologia e Conservação; Brasil Fil: Blanco, Daniel E. Fundación Humedales/Wetlands International; Argentina Fil: Goijman, Andrea Paula. 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 2018-11-14T15:32:11Z 2018-11-14T15:32:11Z 2014-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://www.bioone.org/doi/abs/10.1650/CONDOR-13-160.1 http://hdl.handle.net/20.500.12123/3894 0010-5422 1938-5129 https://doi.org/10.1650/CONDOR-13-160.1 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 Bioone The Condor 116 (3) : 384-393. (2014) |
| spellingShingle | Aves Biodiversidad Agroecosistemas Cultivos Arroz Agroquímicos Biodiversity Agroecosystems Crops Rice Agrochemicals Aves Playeras Sudamérica Argentina Brasil Dias, Rafael Antunes Blanco, Daniel E. Goijman, Andrea Paula Zaccagnini, Maria Elena Density, habitat use, and opportunities for conservation of shorebirds in rice fields in southeastern South America |
| title | Density, habitat use, and opportunities for conservation of shorebirds in rice fields in southeastern South America |
| title_full | Density, habitat use, and opportunities for conservation of shorebirds in rice fields in southeastern South America |
| title_fullStr | Density, habitat use, and opportunities for conservation of shorebirds in rice fields in southeastern South America |
| title_full_unstemmed | Density, habitat use, and opportunities for conservation of shorebirds in rice fields in southeastern South America |
| title_short | Density, habitat use, and opportunities for conservation of shorebirds in rice fields in southeastern South America |
| title_sort | density habitat use and opportunities for conservation of shorebirds in rice fields in southeastern south america |
| topic | Aves Biodiversidad Agroecosistemas Cultivos Arroz Agroquímicos Biodiversity Agroecosystems Crops Rice Agrochemicals Aves Playeras Sudamérica Argentina Brasil |
| url | http://www.bioone.org/doi/abs/10.1650/CONDOR-13-160.1 http://hdl.handle.net/20.500.12123/3894 https://doi.org/10.1650/CONDOR-13-160.1 |
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