Sebastián Andrés Torrella

Sebastián Andrés Torrella
Universidad de Buenos Aires | UBA · Institute of Ecology, Genetics and Evolution of Buenos Aires

Dr. en ciencias biológicas

About

26
Publications
26,381
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425
Citations
Introduction
My general interest is to understand the relationships between agriculture and natural ecosystems. In particular, I’m focused in the agriculture expansion in the South American Chaco and its impacts on vegetation communities. Using tools and the framework of landscape ecology, my researches aims to generate useful knowledge to promote sustainable uses of the natural resources.
Additional affiliations
March 2014 - present
Universidad de Buenos Aires
Position
  • Jefe de TRabajos Prácticos
Education
January 2008 - March 2014
Universidad de Buenos Aires
Field of study
  • Biology

Publications

Publications (26)
Article
Full-text available
The forest in the Central Argentine Chaco has been dramatically fragmented and persists only as isolated patches in an agricultural matrix. In this study, we evaluated the effects of fragmentation on total density, recruitment and size-class structure of its dominant tree species, a key issue, although little explored, for forest conservation in th...
Article
Full-text available
Agricultural expansion threatens biodiversity due to habitat loss and fragmentation. In the Gran Chaco, a global deforestation hotspot, rampant cropland and pasture expansion raise concerns about the sustainability of these land-use changes. Zoning policies were recently enacted in the Argentine Chaco to balance agriculture and conservation, yet th...
Article
Full-text available
In forestry, aerial photogrammetry by means of Unmanned Aerial Systems (UAS) could bridge the gap between detailed fieldwork and broad-range satellite imagery-based analysis. However, optical sensors are only poorly capable of penetrating the tree canopy, causing raw image-based point clouds unable to reliably collect and classify ground points in...
Article
Full-text available
En los últimos 30 años se produjo en la región chaqueña una expansión agropecuaria muy importante que transformó más de 6 millones de hectáreas de bosques nativos, proceso que se dio con bajo o nulo planeamiento y control estatal. A fines de 2007 fue sancionada la ley nacional N° 26.331 de “Presupuestos mínimos de protección ambiental de los bosque...
Article
Plant phenology, that is, the timing of plant growth and development, is sensitive to climate and land‐use changes. Despite its importance in the context of global change, little is known about the plant phenology of subtropical regions. In the Argentinean Wet Chaco region, which is currently under high pressure due to land‐use intensification, the...
Article
Full-text available
The Paraná River ends in a delta that possesses a native riparian forest of outstanding complexity and richness: the monte Blanco (MB). It is located in the highest sectors of the islands, the levees, and has been practically eliminated and replaced mainly by forest plantations. Likewise, many of these forest plantations have been abandoned giving...
Article
Worldwide, the areas covered by native forests are declining while those of tree plantations are increasing. This has raised the question of whether tree plantations are able to preserve native forest species. In Argentina, the main native forests of the Pampas region, called talares, are endangered and their disappearance is imminent. Although exo...
Article
Full-text available
http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-04712019000200207 Here, we studied the composition, structure and functioning of the woody vegetation of a 1000-ha area of the Central Argentine Chaco. First, we identified, through Landsat satellite image processing, three different vegetation classes: two forest types and a savanna....
Article
Full-text available
La cuenca del río Miriñay en la provincia de Corrientes constituye un área de creciente actividad económica en relación con el cultivo de arroz. Con el objetivo de evaluar ambientalmente la realización y acumulación de proyectos agropecuarios y forestales en la cuenca, se consideró el consumo de agua y la pérdida de ambientes naturales tanto de los...
Article
Full-text available
The subtropical dry forests are experiencing rapid clearing in the southamerican Great Chaco region, mainly for soybean production in Argentina. This is causing biodiversity loss and soil salinization. This forests are unique for the floristic richness and the dense forest cover in a region characterized by semiarid climatic conditions. The authors...
Conference Paper
Full-text available
El Parque Provincial Ischigualasto (PPI) es un área protegida ubicada al nordeste de la Provincia de San Juan, Argentina (30º 05’S - 67º 55’O). Tiene una superficie aproximada de 63.000 ha abarcando las ecoregiones del Monte de Sierras y Bolsones y del Chaco Seco. Sus características climáticas (altas temperaturas y bajas precipitaciones) y las con...
Conference Paper
Full-text available
Se presenta un estudio, basado en la modelación hidrológica, para determinar la evolución del consumo de agua y la consecuente afectación del balance hídrico asociados al cambio de uso del suelo por el avance de la agricultura en la Cuenca del río Miriñay (Provincia de Corrientes, Argentina). Se describe la implementación y calibración del modelo....
Article
Full-text available
Land-use change is the main driver of habitat loss and fragmentation worldwide. The rate of dry forest loss in the South American Chaco is among the highest in the world, mainly due to the expansion of soybean production and cattle ranching. Argentina recently implemented a national zoning plan (i.e., the Forest Law) to reduce further forest loss....
Chapter
Full-text available
En este capítulo se discuten algunos aspectos del tratamiento de la información necesaria en procesos de Ordenamiento Territorial Rural (OTR). En primer lugar se discute el papel de la información en los procesos de OTR: brindar elementos para la toma de decisiones, fortalecer a los sectores más débiles y generar valores sobre el territorio. A cont...
Thesis
Full-text available
Natural land cover loss and fragmentation are currently a major threat to biodiversity conservation globally. Have been reported numerous consequences on this process on plant populations and communities, both on structural and functional aspects. In the Argentinean Chaco agriculture expansion has been caused the loss of large areas of native fores...
Article
Full-text available
Subtropical Argentinean Chaco forests have been severely deforested and fragmented due to agriculture during the last six decades. The most affected forests are located in areas that are most favorable for crops. This is the case of the semi-deciduous ‘‘bosque de tres quebrachos’’ (‘‘three quebrachos forest’’) in southwest of Chaco Province (Argent...
Article
Full-text available
Las cortinas forestales de bosque nativo, ¿son eficaces para mitigar los efectos de la expansión agrícola? provincia del Chaco, a partir de una imagen satelital Landsat 5 se digitalizaron las cortinas forestales y los bosques, y se compararon diversos índices de paisaje entre ambas ca-pas. El número de cortinas forestales fue similar al de los frag...
Article
Full-text available
The “tres quebrachos” forests in the SW Province of Chaco was scantily studied and strongly affected by the advance of the agricultural frontier. We studied the composition, structure and state of conservation of the woody plant community in remnants fragments. We determined the species richness and the community composition, and basal area and den...
Article
Full-text available
The "tres quebrachos" forests in the SW Province of Chaco was scantily studied and strongly affected by the advance of the agricultural frontier. We studied the composition, structure and state of conservation of the woody plant community in remnants fragments. We determined the species richness and the community composition, and basal area and den...

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