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Last name: SOUSA MARTÍN
First name: Arturo
Ministerio de Educación y Ciencia CGL2006-07194/BOS
Ministerio de Educación y Ciencia CGL2006-07194/BOS, CGL2009-10683
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Historical changes in the runoff and the vegetalion of lile Natural Park of Doñana (Aba/ario sector), Huelva.- The alteration and disarti culartion of a large part of the runoff and the associated wetland vege tation are due to severa! causes, sorne of them tied to the profound transformation induced by forestation with Pimus Pinea and...
This work aims to demostrate which factors have determined surface drainage and distribution of the present-day hygrophytic vegetation of Abalario, in Doñana Natural Park (Huelva). The area is difficult to interpret because its territorial framework is disfigured as a result of an intensive use of its natural resources having been superimposed...
Hasta el inicio del siglo XIX no se poseen en la península Ibérica registros instrumentales continuados y precisos de variables meteorológicas. Con antelación, la reconstrucción de climatología histórica se basa generalmente en fuentes referidas al impacto provocado por sucesos extremos. Sin embargo, a partir de 1778, asociada al estado...
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El suroeste de la Península Ibérica es una zona sometida a riesgos de aridificación, provocados por el cambio climático. Hemos analizado el comportamiento del Índice de Aridez (1901-2011) en esta zona durante el último siglo a partir de la base de datos Global Climate Monitor. En este ámbito climático, el área estudiada está...
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The temporal irregularity of rainfall, characteristic of a Mediterranean climate, corresponds to the irregularity of the environmental effects on soil. We used aggressiveness as an indicator to quantify the potential environmental impact of rainfall. However, quantifying rainfall aggressiveness is conditioned by the lack of sub-hourly frequency...
A l menos hasta mediado s del S. XX, el litoral oriental onubense, consti tuía un área endémica de paludismo. A lgunos autores plantean la posibilidad de que esta enfe rmedad, desaparecida de latitudes templa das durante la segunda mitad del S. XX, tome un nue vo impul so debido al Calentamiento Global de la atmó sfera . En este trabajo se...
The areas of the Iberian Peninsula with Mediterranean climate are characterised by rainfall irregularity. Standard statistical estimation methods provide a limited insight of all the dimensions of such irregularity. Based on different techniques to describe the inter-annual irregularity of rainfall, the authors develop a new method: the...
Variability in precipitation affects annual total records and causes instability in rainfall distribution throughout the year. Our aim in this study was to develop a procedure, based on pluviometric centralisation and dispersion parameters, that is able to characterise rainfall distribution throughout a year of precipitation in a unique,...
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En este estudio pretendemos establecer el comportamiento de la precipitación mensual durante los periodos de sequía, y establecer si estadísticamente la disminución relativa es proporcionada, o bien, si el efecto del déficit pluviométrico es más marcado en determinados meses. Nos basamos en la serie pluviométrica de Riotinto (37º 42 ́N, 6º 36...
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En este artículo se pretende llamar la atención sobre el estado crítico en que se encuentran las poblaciones de Hydrocharis morsus-ranae L. (Hydrocharitaceae) en la Península Ibérica. Se indica su distribución en dicho territorio y en su área de estudio. Se describe el medio y la vegetación de la única población viviente en la actualidad, se...
The possible connectivity between the spatial distribution of water bodies suitable for vectors of malaria and endemic malaria foci in Southern Europe is still not well known. Spain was one of the last countries in Western Europe to be declared free of malaria by the World Health Organization (WHO) in 1964. This study combines, by means of a...
This study estimates the pluviometric evolution between the 13th and 19th centuries on the southwestern Iberian Peninsula based on the historic records of the impacts of the Guadalquivir River flooding on the city of Seville (Spain). The main documentary source was "Critical history of the floods of the Guadalquivir in Seville", published in...
Understanding the intra-annual distribution of rainfall is an important element for climatic classification and serves as a basis for natural resources management. The present study analyses multi-annual irregularities of the rainfall distribution throughout the year in the period 1941–2010, in the hydrographic basins of the Iberian Peninsula....