Composition and seasonal changes of the bird community in the west pampa grasslands of Argentina

Isacch, Juan Pablo; Bo, Marco; Maceira, Néstor Oscar; Demaría, Manuel R.; Peluc, Susana Inés

doi:10.1648/0273-8570-74.1.59

Cited by 27 publications

(23 citation statements)

References 7 publications

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“…Some of the indicator species of pastoral landscapes are generalists, such as the Southern Lapwing (Vanellus chilensis) and Spotted Nothura (Nothura maculosa), wich feed and nest on the ground in multiple types of open habitats (Bucher andNores 1988, Stotz et al 1996). Other indicator species are grassland specialists such as the Great Pampa-Finch, Brown-and-Yellow Marshbird and Hudson's Canastero, which place their nests in tall grass (Isacch and Martinez 2001, Isacch et al 2003, Cozzani and Zalba 2009, and others such as the Greater Rhea, that nest in short grass surrounded by tall grass (de la Peña 2005). This also suggests that nest-site availability plays an important role in determining bird communities in this landscape type.…”

Section: Land-use Intensificationmentioning

confidence: 99%

Landbird Assemblages in Different Agricultural Landscapes: A Case Study in the Pampas of Central Argentina

2013

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Abstract. A combination of elements (e.g., crops and pasture lands, strips of roadside vegetation, woodlots, temporary wetlands) increases the heterogeneity of rural landscapes. Agricultural landscapes range from homogeneous, dominated by a single element (i.e., pure cropland or pure pastoral farming) to heterogeneous, dominated by two or more elements (i.e., mixed farming). In this study we characterized landbird assemblages in various agricultural landscapes (cropland, pastoral, and mixed landscapes) in the Pampas of central Argentina, surveying along transects to quantify species richness, composition, and abundance. Mixed landscapes were more heterogeneous than pastoral areas and cropland. Species richness, particularly of generalists, was greater in mixed landscapes. Richness of grassland specialists (species of increased conservation concern in the Pampas) was lower in croplands than in pastoral and mixed landscapes. An indicator-species analysis supported the association of some grassland specialists (Rhea americana, Asthenes hudsoni, Embernagra platensis, Pseudoleistes virescens) with pastoral landscapes. Our results suggest that maintaining landscape heterogeneity throughout the Pampas (i.e., mixed landscapes) is important for preserving species richness of birds. But several threatened grassland specialists inhabiting the Pampas, such as Rhea americana and Asthenes hudsoni, are found exclusively in pastoral landscapes, so the long-term survival of these species will depend on the conservation of this landscape type.Key words: agroecosystem, grassland bird species, land use, matrix, Neotropical Region. Ensambles de Aves Terrestres en Diferentes Paisajes Rurales: Un Estudio de Caso en las Pampas del Centro de ArgentinaResumen. La combinación de elementos del paisaje (e.g., cultivos, pastizales, vegetación de bordes de caminos, arboledas y humedales temporarios) incrementa la heterogeneidad y define diferentes tipos de paisajes rurales, desde paisajes homogéneos dominados por un único elemento (i.e., paisaje de cultivo o ganadero) hasta paisajes heterogéneos dominados por dos o más elementos (i.e., paisajes mixtos). En este estudio caracterizamos los ensambles de aves terrestres en diferentes tipos de paisajes rurales de la Pampa argentina (paisajes de cultivos, ganaderos y mixtos). Las aves terrestres fueron muestreadas con transectas para determinar la riqueza de especies, la composición y la abundancia en cada tipo de paisaje rural. El paisaje mixto tuvo una mayor heterogeneidad que los paisajes de cultivos y ganaderos. El paisaje mixto tuvo una mayor riqueza de especies que los paisajes de cultivos y ganaderos, en especial de especies generalistas. Por otro lado, el paisaje de cultivos tuvo la menor riqueza de especialistas de pastizal (aquellas con problemas de conservación en la Pampa) que los paisajes ganaderos y mixtos. Un análisis de especies indicadoras destacó la asociación entre algunas especies de pastizal (Rhea americana, Asthenes hudsoni, Embernagra platensis, Pseudoleistes virescens) y el ...

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Section: Land-use Intensificationmentioning

confidence: 99%

Landbird Assemblages in Different Agricultural Landscapes: A Case Study in the Pampas of Central Argentina

2013

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“…Seasonal changes and functional and structural responses by bird communities is an important research focus for community ecology, and many studies have been conducted in natural habitats and agroecosystems (Loiselle and Blake 1992, Kwok 1996, Kwok and Corlett 1999, Isacch et al 2003, Meyer et al 2010. Few studies have discussed the effects of season on birds in urban areas, and some conducted in Europe and North America have found that season affects species richness of urban bird communities and the nestedness pattern that occurs when species assemblages in relatively species-poor patches comprise successive subsets of the species present at richer sites (Patterson 1987, Suhonen and Jokimäki 1988, Wright and Reeves 1992, Jokimäki et al 1996, Caula et al 2008, Murgui 2010.…”

mentioning

confidence: 99%

Do avian communities vary with season in highly urbanized Hong Kong?

Zhou

Chu

2014

The Wilson Journal of Ornithology

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“…Por ejemplo, las especies omnívoras registradas (i.e. Rhea americana, Rhynchotus rufescens y Nothura maculosa), son especialistas de estos ambientes donde forrajean y nidifican (Setubal, 1991;Bellis, Martella, Navarro, & Vignolo, 2004), mientras que la abundancia de aves granívoras estaría relacionada a que a este tipo de dieta está claramente asociado a ambientes dominados por gramíneas (Isacch et al, 2003;Zurita & Bellocq, 2012) Los resultados muestran que la estructura del ensamble de aves varía estacionalmente, con una mayor riqueza en la estación reproductiva en ambos hábitats debido al arribo de las especies migrantes, patrón concordante con lo ya descrito para bosques (Cueto & Lopez de Casenave, 2000;Codesido & Bilenca, 2004) y pastizales (Isacch & Martínez, 2001;Isacch et al, 2003) del sur de Sudamérica. El Litoral argentino, que incluye el área de estudio, es considerado una de las vías migratorias más importantes de Argentina, donde la mayoría de las especies migrantes estivales que arriban del cono sur se reproducen (Capllonch, Ortiz, & Soria, 2008;de la Peña, 2013).…”

Section: Discussionunclassified

“…Se asignó a las especies categorías de gremios tróficos basándose en el principal componente de su dieta a partir de datos bibliográficos (Canevari, et al, 1991;Isacch, Bó, Maceira, Demaría, & Peluc, 2003;Almeida, Couto, & Alemida, 2003;Codesido & Bilenca, 2004) y observaciones personales de campo. Además, se les asignó la fenología, siguiendo a MazarBarnett y Pearman (2001) y evaluación propia de registros en el área de estudio, considerando las categorías de residente, visitante estival y visitante invernal.…”

Section: Métodosunclassified

Comunidades de aves de bosques y pastizales en los afloramientos rocosos aislados del Paraje Tres Cerros, Corrientes, Argentina

Fandiño¹,

Fernández

Thomann

et al. 2017

RBT

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Bird communities of forests and grasslands on isolated rocky outcrops in Paraje Tres Cerros, Corrientes, Argentina. Isolated rocky outcrops can act as patch habitats that host great biodiversity through the diversity of microhabitats, presence of restricted taxa and the high turnover of species in the patch matrix. The isolated rocky outcrops of Paraje Tres Cerros (ARPTC), Corrientes, Argentina, are a unique landscape in the region and biologically little explored. We conducted a study to describe for the first time the bird community of the forest and grassland of the ARPTC, using 136 lists following the ten species Mackinnon method from the breeding and non-breeding seasons. We evaluated the diversity, trophic guilds and phenology of the species, and compared attributes of grassland and forest communities. The total species richness was 107, with the forest being 1.3 times more diverse than the grassland. Completeness of inventories ranged from 83-90 % in the grassland and 88 to 99 % in the forest. The habitat complementarity was 62 %, indicating the presence of several species exclusive of forest and grassland habitats. The trophic structure of communities showed a good representation of insectivorous birds in both habitats. Frugivorous birds were more frequent in the forest and granivorous birds were more frequent in the grasslands. Due to the arrival of migrant species, both habitats had significantly higher richness in the breeding season than in the non-breeding season. Our results showed similar general aspects and patterns for bird communities and with specific studies for bird communities of rocky outcrops. The present study highlights the importance of the isolated rocky outcrops of Paraje Tres Cerros for the protection of local and regional bird biodiversity and represents a benchmark for the management and the protection of these ecosystems. Rev. Biol. Trop. 65 (2): 535-550. Epub 2017 June 01.

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Composition and seasonal changes of the bird community in the west pampa grasslands of Argentina

Cited by 27 publications

References 7 publications

Landbird Assemblages in Different Agricultural Landscapes: A Case Study in the Pampas of Central Argentina

Landbird Assemblages in Different Agricultural Landscapes: A Case Study in the Pampas of Central Argentina

Do avian communities vary with season in highly urbanized Hong Kong?

Comunidades de aves de bosques y pastizales en los afloramientos rocosos aislados del Paraje Tres Cerros, Corrientes, Argentina

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