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3 resultados encontrados para: AUTOR: Blundo, Cecilia
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1.
- Artículo con arbitraje
Relative contribution of niche and neutral processes on tree species turnover across scales in seasonal forests of NW Argentina
Blundo, Cecilia ; González Espinosa, Mario (coaut.) (1950-) ; Malizia, Lucio Ricardo (coaut.) ;
Contenido en: Plant Ecology Vol. 217, no. 4 (April 2016), p. 359–368 ISSN: 1573-5052
Resumen en: Inglés |
Resumen en inglés

Environmental heterogeneity and dispersal limitation influence tree species distribution, but their relative contributions change with the spatial scale of analysis. We analyzed tree species turnover using twenty 1-ha permanent plots to quantify variation in floristic similarity explained by environmental factors and geographical distance at regional (among plots) and local (within plots) scales in seasonal premontane forests of northwestern Argentina. We related floristic similarity (Bray–Curtis) with environmental variation and geographical distance using specific regression models (regression of distance matrix and mixed-effects models at regional and local scales, respectively). Floristic similarity decreased with distance at both spatial scales but its relative contribution was significant only at the regional scale (18 and <1 % at regional and local scale, respectively). Dispersal limitation may be a relevant process at biogeographical scale where dispersion at large distances become infrequent for some species. In addition, we identified that regional climatic and topographic gradients and local edaphic variation contribute to explain floristic similarity across scales in seasonal premontane forests. Environmental heterogeneity explained about the same variance in floristic similarity at regional and local scales (7 and 8 %, respectively). We conclude that quantitative aspects of floristic patterns, such as the relative contribution of niche and neutral processes to explain species distribution, can strengthen conservation strategies at different spatial scales, and therefore could be a useful tool in conservation planning.


2.
- Artículo con arbitraje
Distribution of functional traits in subtropical trees across environmental and forest use gradients
Blundo, Cecilia ; Malizia, Lucio Ricardo (coaut.) ; González Espinosa, Mario (coaut.) (1950-) ;
Contenido en: Acta Oecologica Vol. 69 (November 2015), p. 96-104 ISSN: 1146-609X
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Resumen en: Inglés |
Resumen en inglés

The relationship between functional traits and environmental factors contribute to understanding community structure and predicting which species will be able to elude environmental filters in different habitats. We selected 10 functional traits related to morphology, demography and regeneration niche in 54 subtropical premontane tree species to describe their main axes of functional differentiation. We derived species traits, environmental variables and species abundance data from 20 1-ha permanent plots established in a seasonal subtropical premontane forest in northwestern Argentina. We analyzed the relationship between species functional traits and environmental factors through RLQ and fourthcorner analyzes. We found an axis of structural differentiation that segregates understory from canopy species, and an axis of functional differentiation that segregates species that maximize resource acquisition from those that promote resource conservation. Environmental and forest use gradients operate hierarchically over subtropical premontane tree species influencing the distribution of demographic and morphological traits. The interaction between climatic and topographic factors influences the distribution of species functional traits at the regional scale. In addition, the history of forest use seems to operate at the landscape scale and explains the distribution of species traits reflecting a trade-off between resource acquisition and resource conservation strategies in secondary forests across different successional stages. Our results support the idea that functional traits may be used to analyze community structure and dynamics through niche differentiation and environmental filtering processes.


3.
- Capítulo de libro sin arbitraje
Análisis experimental de las técnicas de restauración de los bosques secos
Williams Linera, Guadalupe (autor) ; Álvarez Aquino, Claudia (autora) ; Suárez, Alfonso (autor) ; Blundo, Cecilia (autora) ; Smith Ramírez, Cecilia (autora) ; Echeverría, Cristian (autor) ; Cruz Cruz, Efraín (autor) ; Bolados Corral, Gustavo (autor) ; Armesto Zamudio, Juan José (autor) (1953-) ; Heinemann, Karin (autor) ; Malizia, Lucio Ricardo (autor) ; Becerra, Pablo (autor) ; Del Castillo Sánchez, Rafael Felipe (autor) ; Urrutia, Rocío (autora) ;
Disponible en línea
Contenido en: Principios y práctica de la restauración del paisaje forestal: estudios de caso en las zonas secas de América Latina / editado por A. C. Newton y N. Tejedor ; Traductores: José M. Benayas y Marta Rueda Gland, Suiza : Unión Internacional para la Conservación de la Naturaleza y los Recursos Naturales : Fundación Internacional para la Restauración de Ecosistemas, c2011 p. 135-190 ISBN:978-2-8317-1394-6
Bibliotecas: Campeche , San Cristóbal
Cerrar
SIBE Campeche
25599-30 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
25599-20 (Disponible)
Disponibles para prestamo: 1
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