Los grandes sistemas de abastecimiento de agua en el litoral de Alicante

El litoral de Alicante ha sufrido grandes transformaciones territoriales desde las décadas de 1960 y 1970 a raíz de la actividad turística. Uno de los servicios que necesita esta actividad, entre otros, es el abastecimiento de agua potable. En este sentido, por su papel estratégico, el suministro de agua en alta es decisivo para abastecer a los municipios turístico-residenciales. El objetivo de este estudio es conocer y analizar los diferentes sistemas de abastecimiento de agua en alta en la costa de Alicante, sus características, infraestructuras, recursos hídricos disponibles y medidas de gestión llevados a cabo. Algunas de las conclusiones extraídas son el papel estratégico que ejercen en el territorio, especialmente con el agua, un recurso escaso y de vital importancia para la orla costera alicantina, sobre todo en los meses estivales.

peouenosfrutos 17 pós-colheita Conservação de Morangos com utilização de Óleos Essenciais

Nos últimos anos, a cultura do morango tem vindo a assumir uma maior importância devido ao seu potencial de exportação e à elevada procura que se verifica, mas a sua curta vida útil dificulta a sua comercialização.

Assessing the combined effect of land management and wildfire on runoff and soil erosion in north central Portugal

Strong and sometimes extreme responses in runoff and soil erosion following wildfires have been reported worldwide. However, in the case of North-Central Portugal, little research had been carried out regarding the hydrologic and erosive impacts of several land management activities in recently burnt areas (such as ground preparation, post-fire logging or post-fire mitigation treatments). This study aims to assess post-fire runoff and soil erosion response on Eucalypt and Maritime pine plantations during the first, second and third years following wildfires. The effect of several pre-fire ground preparation operations (ploughed down-slope, contour ploughed and inclined terraces), post-fire logging activities (on both the eucalypt and pine plantations), as well as the application of hydromulch (a post-fire emergency treatment) on overland flow and soil erosion were compared to burnt but undisturbed and untreated areas. The intensive monitoring of runoff, soil erosion and selected soil properties served to determine the main factors involved in post-fire runoff and soil erosion and their spatial and temporal variation. Soil water repellency deserved special attention, due to its supposed important role for overland flow generation. Repeated rainfall simulation experiments (RSE’s), micro-scale runoff plots and bounded sediment fences were carried out and/or installed immediately after the wildfire on seven burnt slopes. Micro-scale runoff plots results under natural rainfall conditions were also compared to the RSE’s results, which was useful for assessing the representativeness of the data obtained with artificial rainfall. The results showed comparable runoff coefficient (20-60%) but lower sediment losses (125-1000 g m-2) than prior studies in Portugal, but especially outside Portugal. Lower sediment losses were related with the historic intensive land use in the area. In evaluating these losses, however, the shallowness and stoniness of the soils, as well as the high organic matter fraction of the eroded sediments (50%) must not be overlooked. Sediment limited erosion was measured in all the ploughed sites, probably due to the time since ploughing (several years). The disturbance of the soil surface cover due to post-fire logging and wood extraction substantially increased sediment losses at both the pine and eucalypt sites. Hydromulch effectiveness in reducing the runoff (70%) and sediment losses (83%) was attributed to the protective high coverage provided by hydromulch. The hydromulch significantly affected the soil cover and other soil properties and these changes also reduced the soil erosion risk. The rainfall amount was the main factor explaining the variance in runoff. However, a shift from rainfall amount to rainfall intensity was detected when either the surface cover or the infiltration capacity (hydrophilic conditions) increased. Sediment losses were controlled by rainfall intensity and surface cover. The role of soil water repellency on runoff generation was not consistent; the overall repellency levels alone were not enough to assess its hydrological impact. Soil water repellency explained runoff generation in the specific-sites model better than in the overall model. Additionally, soil moisture content was a better predictor for soil water repellency than antecedent rainfall. The natural rainfall results confirmed that RSE’s were able to capture the specific sediment losses and its organic matter content as well as the differences between the ploughed and unploughed sites. Repeated RSE’s also captured the seasonal variations in runoff and sediment losses attributed to soil water repellency. These results have implications for post-fire soil erosion modelling and soil conservation practices in the region, or areas with the same land use, climate and soil characteristics. The measured sediment loss, as well as the increasing frequency of ploughing in recently burnt and unburnt eucalypt stands, suggests ploughing is not an effective as a soil conservation measure. Logging activities with less impact are recommended in order to maintain the forest litter protecting the soil surface. Due to its high effectiveness in reducing runoff and soil erosion, hydromulch is recommended for highly sensitive and vulnerable areas.

Aplicação de técnicas de conservação in vitro para a conservação de espécies ameaçadas

Dissertação mest., Engenharia Biológica, Universidade do Algarve, 2008

Estudos biotecnológicos em Drosophyllum Lusitanicum L. com vista à sua conservação

Tese dout., Biologia - Biotecnologia, Universidade do Algarve, 2007

Avaliação de condicionantes ambientais a Narcissus willkommii (Samp.) A. Fernandes: bases para estratégias de conservação

Dissertação mest., Gestão e Conservação da Natureza, Universidade do Algarve, 2006

Integração de objectivos de conservação da natureza nos planos directores municipais: o caso de estudo da região centro de Portugal

Dissertação mest., Gestão e Conservação da Natureza, Universidade do Algarve, 2008

Selecção de áreas prioritárias para a conservação da biodiversidade no sul de Portugal

Dissertação de mest., Gestão e Conservação da Natureza, Faculdade de Ciências do Mar e do Ambiente, Universidade do Algarve, 2004

Contributo para a análise da gestão jurídico-administrativa da conservação da natureza em Portugal

Mestrado Gestão e Conservação da Natureza, Faculdade de Ciências do Mar e do Ambiente Univ. do Algarve

Ocorrências de endemismos em países africanos - dados para a aplicação de medidas de conservação: caso de estudo das famílias Leguminosae e Capparaceae S.L. em Angola

Dissertação de mest., Gestão e Conservação da Natureza, Faculdade de Ciências do Mar e do Ambiente, Univ. do Algarve, 2010

Conservação dos frutos de duas cultivares de framboesa (Sevillana e Maravilla) em fresco e em doce

Dissertação de mest., Tecnologia de Alimentos, Instituto Superior de Engenharia, Univ. do Algarve, 2012

Avaliação do estatuto de conservação da flora endémica de Cabo Verde

Tese de mestrado. Biologia (Ecologia e Gestão Ambiental). Universidade de Lisboa, Faculdade de Ciências, 2014

Análise dos métodos de sensibilização dos programas de educação ambiental de três unidades de conservação do Distrito Federal

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Programa de Pós-Graduação em Ciências Florestais, 2016.

Concepção de uma instalação frigorífica com atmosfera controlada para a conservação de uvas de mesa

Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia Mecânica

Segurança contra incêndio em edifícios no núcleo histórico de Ponta Delgada : acessibilidade, estado de conservação dos edifícios e disponibilidade de água para o combate a incêndios

Dissertação de Mestrado em Ambiente, Saúde e Segurança.