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Artículo

Livestock Settlement Dynamics in Drylands: Model application in the Monte desert (Mendoza, Argentina)

Millán, Emmanuel NicolásIcon ; Goirán, Silvana Beatriz; Aranibar, Julieta NelidaIcon ; Bringa, Eduardo MarcialIcon
Fecha de publicación: 05/2017
Editorial: Elsevier Science
Revista: Ecological Informatics
ISSN: 1574-9541
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Human settlements in arid environments are becoming widespread due to population growth, and without planning, they may alter vegetation and ecosystem processes, compromising sustainability. We hypothesize that in an arid region of the central Monte desert (Mendoza, Argentina), surface and groundwater availability are the primary factors controlling livestock settlements establishment and success as productive units, which affect patterns of degradation in the landscape. To evaluate this hypothesis we simulated settlement dynamics using a Monte Carlo based model of Settlement Dynamics in Drylands (SeDD), which calculates probabilities on a gridded region based on six environmental factors: groundwater depth, vegetation type, proximity to rivers, paved road, old river beds, and existing settlements. A parameter sweep, including millions of simulations, was run to identify the most relevant factors controlling settlements. Results indicate that distances to rivers and the presence of old river beds are critical to explain the current distribution of settlements, while vegetation, paved roads, and water table depth were not as relevant to explain settlement distribution. Far from surface water sources, most settlements were established at random, suggesting that pressures to settle in unfavorable places control settlement dynamics in those isolated areas. The simulated vegetation, which considers degradation around livestock settlements, generally matched the spatial distribution of remotely sensed vegetation classes, although with a higher cover of extreme vegetation classes. The model could be a useful tool to evaluate effects of land use changes, such as water provision or changes on river flows, on settlement distribution and vegetation degradation in arid environments.
Palabras clave: Monte Carlo Simulations , Old River Beds , Settlement Dynamics , Spatial Distribution , Vegetation Degradation , Water Availability
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/59310
DOI: https://dx.doi.org/10.1016/j.ecoinf.2017.03.006
URL: https://www.sciencedirect.com/science/article/pii/S1574954116302060
Colecciones
Articulos(CCT - MENDOZA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MENDOZA
Articulos(IANIGLA)
Articulos de INST. ARG. DE NIVOLOGIA, GLACIOLOGIA Y CS. AMBIENT
Citación
Millán, Emmanuel Nicolás; Goirán, Silvana Beatriz; Aranibar, Julieta Nelida; Bringa, Eduardo Marcial; Livestock Settlement Dynamics in Drylands: Model application in the Monte desert (Mendoza, Argentina); Elsevier Science; Ecological Informatics; 39; 5-2017; 84-98
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