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dc.contributor.author
Oliva, Gabriel Esteban
dc.contributor.author
Bran, Donaldo Eduardo
dc.contributor.author
Gaitán, Juan José
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Ferrante, Daniela
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Massara, Virginia
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García Martínez, Guillermo Carlos
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Adema, Edgardo
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Enrique, Mario
dc.contributor.author
Domínguez, Erwin
dc.contributor.author
Paredes, Paula Natalia
dc.date.available
2022-01-04T13:42:35Z
dc.date.issued
2019-02
dc.identifier.citation
Oliva, Gabriel Esteban; Bran, Donaldo Eduardo; Gaitán, Juan José; Ferrante, Daniela; Massara, Virginia; et al.; Monitoring drylands: The MARAS system; Academic Press Ltd - Elsevier Science Ltd; Journal of Arid Environments; 161; 2-2019; 55-63
dc.identifier.issn
0140-1963
dc.identifier.uri
http://hdl.handle.net/11336/149555
dc.description.abstract
MARAS (Monitoring of Arid and Semiarid Regions) consists of 379 ground monitors in Patagonia, a 624.500 km2 semiarid area of southern Argentina and Chile. The objective of this paper was to describe the system and analyze four variables of the initial data base. Floristic composition, diversity and cover were analyzed with intercept lines (500 points). Patches (resource-sinks areas) and Interpatches (areas that loose resources) were described using Gap intercept lines (50 m). Eleven Landscape Functional Analysis indicators were recorded in 10 interpatches: Soil stability, Infiltration and Nutrient cycling. Vegetation Cover was 43 ± 2%, Richness 15 ± 7 species/monitor, Interpatch Size 154 ± 134 cm and LFA Stability Index 46 ± 1%. Cover, Richness and Stability maps had bimodal distribution and maximum in S and NE areas, following rainfall gradients. Variability analysis shows that cover estimations are within 5% error at site and regional scales. Graphical analysis of single monitors shows observational biases in interpatch size and LFA Stability index. Richness estimations correlate significantly with α diversity (R2 = 0.80). Analysis of 5-year change in 115 monitors shows significant reductions in cover and interpatch length, especially N of the region. These base line evaluations enable analysis of future changes that were not possible with multiple techniques and isolated data bases.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Ltd - Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BIODIVERSITY
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LAND FUNCTION ANALYSIS
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PATCH STRUCTURE
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RANGELANDS
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VEGETATION
dc.subject.classification
Ecología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Monitoring drylands: The MARAS system
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-01-03T13:59:11Z
dc.identifier.eissn
1095-922X
dc.journal.volume
161
dc.journal.pagination
55-63
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Oliva, Gabriel Esteban. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Sur. Estación Experimental Agropecuaria Santa Cruz; Argentina
dc.description.fil
Fil: Bran, Donaldo Eduardo. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina
dc.description.fil
Fil: Gaitán, Juan José. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación de Recursos Naturales. Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Ferrante, Daniela. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Sur. Estación Experimental Agropecuaria Santa Cruz; Argentina
dc.description.fil
Fil: Massara, Virginia. Instituto Nacional de Tecnología Agropecuaria. Centro Regional.patagonia Sur. Estación Experimental Agropecuaria Chubut; Argentina
dc.description.fil
Fil: García Martínez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Sur. Estación Experimental Agropecuaria Esquel; Argentina
dc.description.fil
Fil: Adema, Edgardo. Instituto Nacional de Tecnología Agropecuaria. Centro Regional La Pampa-San Luis. Estación Experimental Agropecuaria Anguil; Argentina
dc.description.fil
Fil: Enrique, Mario. Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Patagonia Norte. Estacion Experimental Agropecuaria Valle Inferior del Río Negro.; Argentina
dc.description.fil
Fil: Domínguez, Erwin. Instituto de Investigaciones Agropecuarias; Chile
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Fil: Paredes, Paula Natalia. Universidad Nacional de la Patagonia Austral; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Sur. Estación Experimental Agropecuaria Santa Cruz; Argentina
dc.journal.title
Journal of Arid Environments
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0140196318319505
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jaridenv.2018.10.004
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