4 resultados para Adaptation strategies

em Repositório Científico da Universidade de Évora - Portugal


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O presente estudo visa perceber, de acordo com a perspetiva de mães e pais adotantes, o contributo da adoção para o bem-estar da criança. Para tal, procura-se analisar o entendimento dos mesmos em relação ao bem-estar da criança, assim como as motivações à adoção e principais dificuldades sentidas no processo de adoção e finalmente, compreender a adaptação da criança e da família à mudança, bem como as estratégias utilizadas para o efeito. No estudo, foram envolvidos nove participantes, mães e pais adotantes, aos quais foi realizada uma entrevista semiestruturada. Os resultados foram analisados com recurso à técnica de análise de conteúdo, tendo revelado uma coincidência entre o entendimento das mães e pais adotantes sobre o bem-estar da criança e os dados da literatura. Verificou-se também, uma adaptação pautada por algumas dificuldades e necessidades da criança, sendo o apoio técnico uma das principais estratégias de integração utilizada pelas mães e pais adotantes; Adoption and children well-being: Adoptive mothers and fathers perspective. An exploratory study Abstract: This study aims to understand, according to adoptive mothers and fathers perspective, the contribution of adoption for the children’s well-being. To this end, it seeks to analyze the understanding of them in relation to children’s well-being, as well as the motivation to adopt, the main difficulties in the adoption process and finally to understand the adaptation of the child and family to change as well as the strategies used for the purpose. In this study, there were involved nine participants, adoptive mothers and fathers, to which a semi-structured interview was conducted. The results were analyzed using the content analysis technique, which has revealed similar results with the literature. There has been revealed an adaptation marked by difficulties and needs of the child, with the technical support one the main integration strategies used by adoptive mothers and fathers.

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Water is now considered the most important but vulnerable resource in the Mediterranean region. Nev ertheless, irrigation expanded fast in the region (e.g. South Portugal and Spain) to mitigate environmental stress and to guarantee stable grape yield and quality. Sustainable wine production depends on sustain able water use in the wine’s supply chain, from the vine to the bottle. Better understanding of grapevine stress physiology (e.g. water relations, temperature regulation, water use efficiency), more robust crop monitoring/phenotyping and implementation of best water management practices will help to mitigate climate effects and will enable significant water savings in the vineyard and winery. In this paper, we focused on the major vulnerabilities and opportunities of South European Mediterranean viticulture (e.g. in Portugal and Spain) and present a multi-level strategy (from plant to the consumer) to overcome region’s weaknesses and support strategies for adaptation to water scarcity, promote sustainable water use and minimize the environmental impact of the sector.

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Water is now considered the most important but vulnerable resource in the Mediterranean region. Nevertheless, irrigation expanded fast in the region (e.g. South Portugal and Spain) to mitigate environmental stress and to guarantee stable grape yield and quality. Sustainable wine production depends on sustainable water use in the wine’s supply chain, from the vine to the bottle. Better understanding of grapevine stress physiology (e.g. water relations, temperature regulation, water use efficiency), more robust crop monitoring/phenotyping and implementation of best water management practices will help to mitigate climate effects and will enable significant water savings in the vineyard and winery. In this paper, we focused on the major vulnerabilities and opportunities of South European Mediterranean viticulture (e.g. in Portugal and Spain) and present a multi-level strategy (from plant to the consumer) to overcome region’s weaknesses and support strategies for adaptation to water scarcity, promote sustainable water use and minimize the environmental impact of the sector.

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At Mediterranean regions and particularly in southern Portugal, it is imperative to identify grape varieties more adapted to warm and dry climates in order to overcome future climatic changes. Two Vitis vinifera genotypes, Aragonez (syn. Tempranillo) and Trincadeira, were selected to assess their physiological responses to soil water stress. Vines were subjected to four irrigation regimes: irrigated during all phenological cycle, non-irrigated during all phenological cycle, non irrigated until veraison, irrigated after veraison. Predawn leaf water potential was much higher in Trincadeira than Aragonez in non- irrigated plants. This result is in accordance with its higher stomatal control efficiency in this variety (Trincadeira). Photosynthetic capacity (Amax at saturating light intensity) decreased due to stomatal and biochemical limitations under water stress. However, recovery capacity of leaf water status after irrigation was faster in Trincadeira. Yield and yield x Brix increased when irrigation occurred after veraison, particularly in Trincadeira. These results show that Trincadeira presents a drought adaptation than Aragonez. Ratio of variable to maximum fluorescence Fv/Fm and total leaf chlorophyll related with leaf water potential for both species. Reflectance Normalized Difference Vegetation Index (NDVI705), Red Edge Inflexion Point Index and Photochemical Reflectance Index were related with irrigation treatment. Relative water content and specific leaf area were similar between varieties. In conclusion, we suggested that there is variation among the genotypes and the main physiological parameters for variety selection, for drought, were leaf water potential, stomatal conductance and reflectance indexes.