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dc.contributor.author
Casalini, Ana Isabel
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dc.contributor.author
Bouza, Pablo Jose
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dc.contributor.author
Bisigato, Alejandro Jorge
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dc.date.available
2020-05-26T19:28:32Z
dc.date.issued
2019-03
dc.identifier.citation
Casalini, Ana Isabel; Bouza, Pablo Jose; Bisigato, Alejandro Jorge; Geomorphology, soil and vegetation patterns in an arid ecotone; Elsevier Science; Catena; 174; 3-2019; 353-361
dc.identifier.issn
0341-8162
dc.identifier.uri
http://hdl.handle.net/11336/105922
dc.description.abstract
Ecotonal boundaries are often arranged by following topoedaphic gradients. Despite its relevance, the interrelationships between vegetation and geomorphology have not been adequately documented in most arid regions. The Southern Monte ? Patagonia ecotone, defined by anastomosing systems of paleochannels and paleobars, presents an opportunity to study these interrelationships. Our aim was to determine whether topography and/or soil characteristics explained the distribution of communities which are typical of both Phytogeographic Provinces. Vegetation and soil surveys were performed along topographical gradients found between several paleochannels and paleobars. Surface soil texture, organic carbon, total nitrogen, carbonate content and electric conductivity were measured at each site. Digital elevation models and moisture index maps were derived from topographical field data. Soil and plant cover differences between landforms were inspected. Afterwards, species distribution, communities´ attributes and its relation with topographical variables were explored. Paleochannels exhibited higher shrub and total cover, as well as higher organic carbon and lower carbonate content than the paleobars. Chuquiraga avellanedae (Asteraceae) dominated the plant community in the paleochannels, while on the contrary Larrea divaricata (Zygophyllaceae) was the most abundant species found on the paleobars. These communities are related to Patagonia and Monte Phytogeographic Provinces, respectively. Species distribution was mainly explained by elevation and secondly by surface water redistribution. Current vegetation patterns strongly mirror the paleolandscape and as a consequence of that, plant communities are interspersed throughout the landscape. Our results emphasize the importance of geomorphology as a factor influencing community distribution along arid ecotones.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GEOMORPHOLOGY
dc.subject
ARID ENVIRONMENTS
dc.subject
SPATIAL DATA
dc.subject
SOIL HETEROGENEITY
dc.subject.classification
Geociencias multidisciplinaria
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Geomorphology, soil and vegetation patterns in an arid ecotone
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-05-19T18:35:02Z
dc.identifier.eissn
1872-6887
dc.journal.volume
174
dc.journal.pagination
353-361
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Casalini, Ana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina
dc.description.fil
Fil: Bouza, Pablo Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina
dc.description.fil
Fil: Bisigato, Alejandro Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.journal.title
Catena
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.catena.2018.11.026
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0341816218305216
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