Forest fragmentation effect on potential food sources for birds in Córdoba
Forest loss and fragmentation can affect food resources consumed by different avian groups. A better knowledge on the relationships between different proxies of forest fragmentation and food resources consumed by a wide diversity of avian species can help us understand the indirect effects of forest fragmentation on bird populations. We worked in forest patches in the Chaco forest of Córdoba, Argentina. We estimated the relative abundance of arthropods, flowers, fruits and seeds (food items for different bird feeding guilds) in a fragmentation gradient during summer and winter. During the summer season, Celtis ehrenbergiana and Lycium cestroides offered >90% of the total fruits and flowers estimated abundance, respectively. Solanum argentinum offered most of the estimated fruit abundance during the winter season. Arthropod abundance (in winter) and seed abundance (in both seasons) increased with patch size reduction; moreover, we observed higher abundance in the forest edge than in the interior. We only found a negative effect of forest fragmentation on fruit and flower abundance for individual species. Regarding to seasonality, relative abundance of arthropods was signifcantly reduced in winter, whereas relative abundance of fruit and seeds was similar between seasons. Relative abundance of flowers was drastically reduced in winter; therefore, we could not perform statistical comparisons between seasons. This work offers a frst approach to the food abundance resources for birds and their response to fragmentation in an area of the Chaco forests.https://doi.org/10.25260/EA.18.28.2.0.429
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Asociación Argentina de Ecología
2018
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Verga, Ernesto G. Peluc, Susana I. Landi, Marcos Galetto, Leonardo |
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Verga, Ernesto G. Peluc, Susana I. Landi, Marcos Galetto, Leonardo Forest fragmentation effect on potential food sources for birds in Córdoba |
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Verga, Ernesto G. Peluc, Susana I. Landi, Marcos Galetto, Leonardo |
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Verga, Ernesto G. |
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Forest fragmentation effect on potential food sources for birds in Córdoba |
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Forest fragmentation effect on potential food sources for birds in Córdoba |
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Forest fragmentation effect on potential food sources for birds in Córdoba |
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Forest fragmentation effect on potential food sources for birds in Córdoba |
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Forest fragmentation effect on potential food sources for birds in Córdoba |
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forest fragmentation effect on potential food sources for birds in córdoba |
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Forest loss and fragmentation can affect food resources consumed by different avian groups. A better knowledge on the relationships between different proxies of forest fragmentation and food resources consumed by a wide diversity of avian species can help us understand the indirect effects of forest fragmentation on bird populations. We worked in forest patches in the Chaco forest of Córdoba, Argentina. We estimated the relative abundance of arthropods, flowers, fruits and seeds (food items for different bird feeding guilds) in a fragmentation gradient during summer and winter. During the summer season, Celtis ehrenbergiana and Lycium cestroides offered >90% of the total fruits and flowers estimated abundance, respectively. Solanum argentinum offered most of the estimated fruit abundance during the winter season. Arthropod abundance (in winter) and seed abundance (in both seasons) increased with patch size reduction; moreover, we observed higher abundance in the forest edge than in the interior. We only found a negative effect of forest fragmentation on fruit and flower abundance for individual species. Regarding to seasonality, relative abundance of arthropods was signifcantly reduced in winter, whereas relative abundance of fruit and seeds was similar between seasons. Relative abundance of flowers was drastically reduced in winter; therefore, we could not perform statistical comparisons between seasons. This work offers a frst approach to the food abundance resources for birds and their response to fragmentation in an area of the Chaco forests.https://doi.org/10.25260/EA.18.28.2.0.429 |
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Asociación Argentina de Ecología |
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2018 |
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https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/429 |
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rev-ecoaus-article-4292023-11-02T19:27:03Z Forest fragmentation effect on potential food sources for birds in Córdoba Efecto de la fragmentación del bosque sobre las fuentes potenciales de alimento para aves en Córdoba Verga, Ernesto G. Peluc, Susana I. Landi, Marcos Galetto, Leonardo Forest loss and fragmentation can affect food resources consumed by different avian groups. A better knowledge on the relationships between different proxies of forest fragmentation and food resources consumed by a wide diversity of avian species can help us understand the indirect effects of forest fragmentation on bird populations. We worked in forest patches in the Chaco forest of Córdoba, Argentina. We estimated the relative abundance of arthropods, flowers, fruits and seeds (food items for different bird feeding guilds) in a fragmentation gradient during summer and winter. During the summer season, Celtis ehrenbergiana and Lycium cestroides offered >90% of the total fruits and flowers estimated abundance, respectively. Solanum argentinum offered most of the estimated fruit abundance during the winter season. Arthropod abundance (in winter) and seed abundance (in both seasons) increased with patch size reduction; moreover, we observed higher abundance in the forest edge than in the interior. We only found a negative effect of forest fragmentation on fruit and flower abundance for individual species. Regarding to seasonality, relative abundance of arthropods was signifcantly reduced in winter, whereas relative abundance of fruit and seeds was similar between seasons. Relative abundance of flowers was drastically reduced in winter; therefore, we could not perform statistical comparisons between seasons. This work offers a frst approach to the food abundance resources for birds and their response to fragmentation in an area of the Chaco forests.https://doi.org/10.25260/EA.18.28.2.0.429 La pérdida y fragmentación del bosque pueden alterar la abundancia de recursos alimentarios que consumen distintos grupos de aves. Estudiar cómo se relacionan distintos indicadores de la fragmentación con la abundancia de alimentos consumidos por una amplia diversidad de aves puede ayudar a entender los efectos indirectos de la fragmentación del bosque sobre sus poblaciones. Trabajamos en fragmentos de bosque chaqueño en Córdoba, Argentina. Estimamos la abundancia relativa de artrópodos, flores, frutos y semillas (alimento para distintos gremios trófcos de aves) en un gradiente de fragmentación, tanto en verano como en invierno. Durante el verano, Celtis ehrenbergiana y Lycium cestroides ofrecieron más del 90% de los frutos y flores estimados, respectivamente. Durante el invierno, Solanum argentinum aportó casi la totalidad de los frutos ornitócoros estimados. La abundancia de artrópodos (durante el invierno) y de semillas (en ambas estaciones) aumentó con la reducción del área de los fragmentos y se observó una mayor abundancia en el borde respecto al interior de los fragmentos. Sólo observamos una relación negativa entre la fragmentación y la abundancia de frutos ornitócoros y flores ornitóflas para algunas especies individuales. Con respecto a la estacionalidad, la abundancia relativa de artrópodos fue signifcativamente menor durante el invierno, mientras que la abundancia relativa de frutos ornitócoros y semillas en el suelo fue similar entre estaciones. La disminución de la abundancia de flores en invierno fue tan drástica que nos imposibilitó realizar comparaciones estadísticas. Este trabajo ofrece una primera aproximación a la abundancia de recursos alimentarios que consumen las aves y su respuesta a la fragmentación en un sector del bosque chaqueño.Foto: modificada de lavoz.com.arhttps://doi.org/10.25260/EA.18.28.2.0.429 Asociación Argentina de Ecología 2018-08-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articles Artículos application/pdf image/tiff https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/429 10.25260/EA.18.28.2.0.429 Ecología Austral; Vol. 28 No. 2 (2018): August 2018. Pages 325-479; 339-352 Ecología Austral; Vol. 28 Núm. 2 (2018): August 2018. Pages 325-479; 339-352 1667-782X 0327-5477 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/429/336 https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/429/471 Derechos de autor 2018 Ernesto G. Verga, Susana I. Peluc, Marcos Landi, Leonardo Galetto https://creativecommons.org/licenses/by/3.0/ |