La vegetación y el medio físico del Chaco Arido en la provincia de Córdoba, Argentina Central

Cabido, Marcelo; Manzur, Aníbal; Carranza, María Laura; Albarracin, C. González

doi:10.1127/phyto/24/1994/423

Cited by 84 publications

(110 citation statements)

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“…The climate is subtropical with a mean annual precipitation of 500 mm distributed in springsummer (October-March), a mean annual temperature of 18°C and a water deficit of 500-800 mm (Cabido et al 1994, Carranza andLedesma 2005). Soils are mainly sandy-loam aridisols of alluvial origin (Gorgas and Tassile 2003).…”

Section: Study Systemmentioning

confidence: 99%

“…The vegetation that once covered most of the region is an open xerophytic forest dominated by the trees Aspidosperma quebracho-blanco and Prosopis spp. (Cabrera 1976, Cabido et al 1994). At present, however, the predominant land cover is a mosaic of different ecosystems ranging from forest to open shrublands or cultivated patches, with a very small proportion of primary forest (Conti andDíaz 2013, Hoyos et al 2013).…”

Section: Study Systemmentioning

confidence: 99%

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The social value of biodiversity and ecosystem services from the perspectives of different social actors

Cáceres¹,

Tapella²,

Quétier³

et al. 2015

E&S

124

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ABSTRACT. A vast literature is now available on ecosystem services (ES), their potential as a tool for analyzing intertwined processes of ecological and social change, and their monetary valuation. Much less is known about the social value of different ES for different social actors (SA), and their links with specific components of biodiversity. We unpack the social aspects of an interdisciplinary and multi-SA methodology that allows us to assess how different SA perceive and value different ES, and how they associate them with different components of biodiversity, ecological attributes, and ecosystem types. We apply the methodology to a study area in the Gran Chaco region of South America, presenting original social-ecological information from the field. Being affected by the rapid and widespread expansion of agribusiness over the woody ecosystems of southern South America, this location provides a policy-relevant context in which to test our approach. We identified six major ecosystem types and five relevant SA. We carried out 163 individual indepth interviews and ran seven single-actor focus groups. We identified 116 ES, which were then aggregated into 22 more general categories. Although all SA perceived all ecosystem types as multifunctional, they showed markedly different perceptions of and interests in the ES provided by them. Subsistence farmers and extension officers valued a large number of ES primarily provided by the most pristine ecosystems. Members of conservation agencies and policymakers also identified a wide range of ES, spanning all ecosystem types. However, large farmers and cattle ranchers recognized a dependency on only a small number of ES. Therefore, the rapid expansion of agribusiness occurring in this region is a threat to a large number of ES considered valuable by a wide range of SA. Without necessarily having to resort to monetary valuation, our methodology provides a rigorous quantitative-qualitative way to compare the perspective of different SA, including scientists, and is thus useful for social-ecological assessment and action.

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Section: Study Systemmentioning

confidence: 99%

Section: Study Systemmentioning

confidence: 99%

The social value of biodiversity and ecosystem services from the perspectives of different social actors

Cáceres¹,

Tapella²,

Quétier³

et al. 2015

E&S

124

View full text Add to dashboard Cite

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“…Considering that in the Province of Cordoba forested lands were reduced because of the advance of agricultural frontier (CABIDO & ZAk, 1999) and lichen communities are contained in relictual forest, threatened by the habitat fragmentation and application of agrochemicals further studies are crucial. This work highlights the importance of conservation of forest ecosystems as a source for the maintenance and recovery of the diversity of lichen communities -and others associated with them.…”

Section: Discussionmentioning

confidence: 99%

Lichen community from an endangered forest under different management practices in central Argentina

Filippini

Rodríguez

Estrabou

2014

LAZA

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Abstract:Filippini, E.R., Rodriguez, J.M. & Estrabou, C. Lichen community from an endangered forest under different management practices in central Argentina. Lazaroa 35: 55-63 (2014).We studied a lichen community from 300 ha of native Espinal forest under different types of management, classified into the following sectors: temporary grazing, adjacent crops, landscaped, and conserved. We observed 20 trees in each sector, identified lichen species and measured coverage in grids of 0.2 x 0.2 m. We compared alpha and beta diversity plus coverage by sector using the kruskal-Wallis and Mann-Whitney U tests. We also applied a Multiple Response Permutation Procedure, a Non-metric Multidimensional Scaling multivariate analysis and the Indicator Species Analysis to test associations. We found 34 species of lichens. Physciaceae was the dominant family in the community. Total lichen coverage was highest in the temporary grazing sector and lowest in the conserved sector. No significant differences were found in alpha diversity among sectors; however, beta diversity was higher in the conserved sector. Multivariate analysis also showed that different management practices determine changes in community composition.Keywords: grazing, native forest, Physciaceae, Espinal, composition. Resumen: Filippini, E.R., Rodriguez, J.M. & Estrabou, C. Comunidad liquénica de un bosque en peligro de extinción, con diferentes situaciones de manejo en el centro de Argentina. Lazaroa 35: 55-63 (2014).Se ha estudiado la comunidad de líquenes de un bosque nativo de Espinal de 300 ha bajo diferentes tipos de manejo definidos en sectores: pastoreo temporal, cultivos adyacentes, ajardinado y conservado. Se seleccionaron 20 árboles en cada sector, identificamos todas las especies liquénicas y medimos su cobertura en grillas de 0.2 x 0.2 m. Comparamos la diversidad alfa y beta y también la cobertura por sector, usando los test de kruskal-Wallis y Mann-Whitney U. Además aplicamos un Procedimiento de Respuesta Múltiple por Permutación, un análisis multivariado de Escalamiento Multidimensional No métrico y un Análisis Indicador de Especies para probar asociaciones. Encontramos 34 especies de líquenes. Physciaceae fue la familia dominante en la comunidad. La cobertura total de especies fue alta en el sector con pastoreo temporal y menor en el sector conservado. No se encontraron diferencias significativas en la diversidad alfa entre sectores; sin embargo, la diversidad beta fue mayor en el conservado. Los análisis multivariados mostraron también que diferentes manejos determinan cambios en la composición de la comunidad.Palabras clave: pastoreo, bosque nativo, Physciaceae, Espinal, composición.

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“…Fragmentos del hábitat chaqueño alternan con la fisonomía de parque de Schinopsis sp. y pastizales producto de tala selectiva, así como con parcelas en distinto grado de modificación entre bosque secundario y cultivos (Cabido & Zak, 1999). Descripción detallada del área de estudio en Kufner et al (2005).…”

Section: Materials Y Métodounclassified

Avifauna Del Bosque Chaqueño Oriental De La Provincia De Córdoba, Argentina

et al. 2006

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ResumenEl Chaco -hábitat reproductivo de aves migratorias-tiene mayor prioridad de conservación en Sudamérica. Su estacionalidad hídrica típica influye en la disponibilidad de recursos, así como en la composición y organización de avifauna. Sobre éstas inciden la fragmentación y reemplazo del bosque por expansión agrícola. Esta contribución proporciona la composición y riqueza de avifauna en remanentes del Chaco Oriental de Córdoba y realiza observaciones ecológicas sobre gremios tróficos, estatus de residencia y estado poblacional, a fin de interpretar su situación actual y promover su conservación. Dichos relictos se ubican entre la Reserva de Mar Chiquita y las Sierras del Norte, alternando con bosque secundario, parque y pastizales producidos por tala, y con parcelas cultivadas. Entre invierno de 2000 y otoño de 2002 se relevaron estacionalmente las aves en puntos fijos distribuidos al azar. Se detallaron: ubicación sistemática, nombre vulgar, estado poblacional, estatus de residencia y gremio trófico. Se hallaron un número elevado de especies (127) y entidades interesantes: amenazada (Harpyhaliaetus coronatus), en recuperación (Ortalis canicollis), acuáticas y "plagas agrícolas", acorde con la variedad de fisonomías y condiciones ecosistémicas del área. Las especies permanentes fueron mayoría expresándose su adaptación al bosque en la diversidad alimentaria. Las alteraciones del hábitat provocaron un cambio de 24% de especies antiguas permanentes, a ocasionales. Las migrantes estivales -coherentemente con la disponibilidad de recursos-triplicaron las invernales. Del gremio insectívoro participaron especies permanentes, migrantes y ocasionales, acorde a provisión de insectos en bosque subtropical semiárido. La biodiversidad remanente de aves chaqueñas aconseja su conservación. Palabras clave: Chaco, Bosque relictual, Avifauna, Composición, situación y características funcionales AbstractThe Chaco -reproductive habitat of migratory birds -has a great conservation priority in South America. Its typical seasonality influences the availability of resources, and the composition and organization of avifauna. Fragmentation and substitution of the forest for agricultural expansions, impact on these characteristics. This contribution provides the composition and richness of avifauna in relicts of the Oriental Chaco of Córdoba, and carries out ecological observations on trophic guilds, residence and conservation status, in order to interpret its current situation and to promote conservation. These forest remnants located between the Reserve of Mar Chiquita and Sierras del Norte, alternate with secondary forest, park and grassland, and cultivated parcels. From the 2000 winter to the 2002 autumn birds were observed seasonally in fixed points distributed at random. Characteristics detailed were: systematic classification, common name, population state, residence status and trophic guild. A high number of species (127) and interesting entities were found, according with the variety of ecosystem physiognomies and condition...

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La vegetación y el medio físico del Chaco Arido en la provincia de Córdoba, Argentina Central

Cited by 84 publications

References 0 publications

The social value of biodiversity and ecosystem services from the perspectives of different social actors

The social value of biodiversity and ecosystem services from the perspectives of different social actors

Lichen community from an endangered forest under different management practices in central Argentina

Avifauna Del Bosque Chaqueño Oriental De La Provincia De Córdoba, Argentina

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