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dc.contributor.author
Bisigato, Alejandro Jorge  
dc.contributor.author
Hardtke, Leonardo Andrés  
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del Valle, Hector Francisco  
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Bouza, Pablo Jose  
dc.contributor.author
Palacio, Romina Gisela  
dc.date.available
2018-10-05T19:34:48Z  
dc.date.issued
2016-07  
dc.identifier.citation
Bisigato, Alejandro Jorge; Hardtke, Leonardo Andrés; del Valle, Hector Francisco; Bouza, Pablo Jose; Palacio, Romina Gisela; Regional-scale vegetation heterogeneity in northeastern Patagonia: Environmental and spatial components; Akademiai Kiado; Community Ecology; 17; 1; 7-2016; 8-16  
dc.identifier.issn
1585-8553  
dc.identifier.uri
http://hdl.handle.net/11336/61822  
dc.description.abstract
Our aim was to describe vegetation heterogeneity at a regional scale in northeastern Patagonia and to identify the environmental variables associated to it. The study area encompasses 13 144 km2 and is characterized by a mixture of species typical of Patagonian steppes and Monte Desert. We performed 48 vegetation relevés, which were randomly assigned to a training set and to a validation set (32 and 16 relevés, respectively). Training set was subjected to cluster analysis, which allowed the identification of two plant communities one related to Patagonian steppes and another to the Monte desert. We derived 3 attributes of the seasonal curve of the NDVI as indicators of ecosystem function: the seasonal amplitude (SA), the date of the maximum (DOM), and the large seasonal integral (LSI). We explored the relationship between NDVI attributes and communities by classification tree analysis. LSI was the strongest predictor among NDVI attributes, separating both communities without misclassification errors. Patagonian steppes occupy areas with higher LSI. The partial RDA analysis explained 38.1% of total data variation, of which 16.5% was ascribed to environment, 7.9% to space, and 13.7% to spatial component of environment. Patagonian steppes are closer to the coast, in areas exhibiting higher annual precipitation and lower annual temperature range than Monte deserts. Our results indicate the occurrence of two plant communities in the study area and highlight the significance of climatic variables to explain their spatial distribution. As most scenarios of future climate predict greater annual thermal amplitude in the study area, the limit between both communities could be displaced eastward.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Akademiai Kiado  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Monte Desert  
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Patagonian Steppe  
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Precipitation  
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Spatial Autocorrelation  
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Temperature.  
dc.subject.classification
Meteorología y Ciencias Atmosféricas  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Regional-scale vegetation heterogeneity in northeastern Patagonia: Environmental and spatial components  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-05-23T13:32:21Z  
dc.identifier.eissn
1588-2756  
dc.journal.volume
17  
dc.journal.number
1  
dc.journal.pagination
8-16  
dc.journal.pais
Hungría  
dc.description.fil
Fil: Bisigato, Alejandro Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Sede Puerto Madryn; Argentina  
dc.description.fil
Fil: Hardtke, Leonardo Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: del Valle, Hector Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Bouza, Pablo Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Palacio, Romina Gisela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.journal.title
Community Ecology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1556/168.2016.17.1.2