Changes in evapotranspiration and phenology as consequences of shrub removal in dry forests of central Argentina

More than half of the dry woodlands (forests and shrublands) of the world are in South America, mainly in Brazil and Argentina, where in the last years intense land use changes have occurred. This study evaluated how the transition from woody-dominated to grass-dominated system affected key ecohydro...

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Otros Autores: Marchesini, Victoria A., Fernández, Roberto Javier (CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.), Reynolds, James F., Sobrino, José A., Di Bella, Carlos Marcelo
Formato: Artículo
Lenguaje:Inglés
Materias:
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2015marchesini.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
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245 1 |a Changes in evapotranspiration and phenology as consequences of shrub removal in dry forests of central Argentina 
520 |a More than half of the dry woodlands (forests and shrublands) of the world are in South America, mainly in Brazil and Argentina, where in the last years intense land use changes have occurred. This study evaluated how the transition from woody-dominated to grass-dominated system affected key ecohydrological variables and biophysical processes over 20 000 ha of dry forest in central Argentina. We used a simplified surface energy balance model together with moderate-resolution imaging spectroradiometer–normalized difference vegetation index data to analyse changes in above primary productivity, phenology, actual evapotranspiration, albedo and land surface temperature for four complete growing seasons (2004–2009). The removal of woody vegetation decreased aboveground primary productivity by 15–21%, with an effect that lasted at least 4 years, shortened the growing season between 1 and 3 months and reduced evapotranspiration by as much as 30%. Albedo and land surface temperature increased significantly after the woody to grassland conversion. Our findings highlight the role of woody vegetation in regulating water dynamics and ecosystem phenology and show how changes in vegetative cover can influence regional climatic change. 
650 |2 Agrovoc  |9 26 
653 |a WATER DYNAMICS 
653 |a ECOSYSTEM PHENOLOGY 
653 |a REMOTE SENSING 
653 |a NDVI 
653 |a SELECTIVE DEFORESTATION 
653 |a DRY CHACO 
700 1 |a Marchesini, Victoria A.  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 22670 
700 |9 6385  |a Fernández, Roberto Javier  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.   |e CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
700 1 |a Reynolds, James F.  |u Duke University. Nicholas School of the Environment.Department of Biology. Durham, NC, USA  |9 67902 
700 1 |a Sobrino, José A.  |u Universitat de Valencia. Unidad de Cambio Global/IPL. Valencia, Spain.  |9 67903 
700 1 |a Di Bella, Carlos Marcelo  |u Instituto Nacional de Investigaciones Agropecuarias (INTA). Instituto de Recursos Biológicos (CIRN, CNIA). Buenos Aires, Argentina.  |9 10683 
773 |t Ecohydrology  |g Vol.8, no.7 (2015), p.1304–1311, fot., grafs., mapas 
856 |f 2015marchesini  |i en reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2015marchesini.pdf  |x ARTI201809 
856 |z LINK AL EDITOR  |u http://www.wiley.com 
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