128 research outputs found

    Os carvalhais do Parque Natural das Senas de Aire e Candeeiros (Centro de Portugal): sua conservacao

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    Os carvalhais do Parque Natural das Serras de Aire e Candeeiros no Centro-Oeste de Portugal, sao aquí estudados pelos métodos da escola de Zurich-Montpellier e dos perfis ecológicos e informagdo mútua. Os resultados obtidos permitem afirmar que as espécies mais sensíveis a dominancia de Quercus faginea Lam. ssp. broteroi (P. Coutinho) A. Camus esta° incluidas essencialmente na associnao Arisaro clusii-Quercetum broteroi Br.-B1., P. Silva & Rozeira, 1956, nos sintáxones de hierarquia superior ou nas comunidades da mesma série de vegetaÇao.The oakwoods of Senas de Aire e Candeeiros Natural Park in Portugal Center- West are studied here by the methods of Zurich-Montpellier school and ecological profiles and mutual information. The results allow to state that the most sensitive species to Quercus fagineu Lam. ssp. broteroi (P. Coutinho) A. Camus domination are essencially included in Arisaro clusii-Quercetwn broteroi Br.-B1., P. Silva & Rozeira, 1956, association, in superior hierarchy sintaxa or in the communities of the same vegetation serie

    Ant Assemblage Structure in a Secondary Tropical Dry Forest: The Role of Ecological Succession and Seasonality

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    This study identified the main biological mechanisms governing the diversity of ants on different ecological time scales. Ants were sampled in 15 plots distributed in early, intermediate and late stages of succession (five plots per stage) at the Parque Estadual da Mata Seca, Brazil. At each sample point, unbaited pitfall traps were installed in hypogaeic, epigaeic and arboreal strata. We collected 95 ant species from 26 genera and nine subfamilies. Our results indicated that there was an increase in species richness in advanced stages of succession. We also observed that ant assemblages were different among successional stages. For the arboreal and epigaeic strata, species richness did not change with succession progression, but species composition of these two strata differed among successional stages. Unlike to arboreal and epigaeic ants, hypogaiec ant species richness was higher in the intermediate and late stages of succession and the composition of hypogaeic ants differed among successional stages. Similarity between ant species foraging in arboreal and epigaeic strata decreases with succession progression and β-diversity was higher in advanced successional stages. Additionally, species richness was higher in the dry season, whereas the composition of ant assemblages did not change between seasons. A considerable fraction of the ant assemblage was found only in advanced stages of succession, demonstrating the importance of secondary habitats in maintaining biodiversity in dry forests

    The vegetation of Madeira: IV - Coastal Vegetation of Porto Santo Island (Archipelag of Madeira)

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    The littoral geomorphology of the Porto Santo Island is of paramount importance in the coastal phytocoenosis assemblage: the southern part of the island has an 8 km long sand beach with littoral sandstone platforms in its eastern extreme; sandstone or volcanic (mostly trachits) sea cliffs predominate in the rest of the island; in the northern part of the island, near the airport, there is an elevated dune (more than 150 m above sea level), related to an ancient island tilt. In the Porto Santo' s beach and cliff ecosystems, we found four new associations. All of them are finicolous associations in the context of their alliances, with low floristic diversity and presided by small area endemics

    The vegetation of Madeira: V - Lino stricti-Stipetum capensis, ass. nova and Vicio costei-Echietum plantagini, ass. nova, two new semi-nitrophylous associations from Porto-Santo Island (Archipelag of Madeira)

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    Porto Santo is a deeply eroded oceanic island. The human uses of the territory led to a massive destruction of its primitive vegetation cover and its substitution by new types of vegetation constituted by plants adapted to the novel perturbation regimes introduced by human settlers. A vegetation cover once dominated by trees or shrubs that evolved isolated from herbivory during millions of years, was replaced since the XV century by herbaceous anthropogenic vegetation, dominated by neophytes, adapted to perturbation events imposed by mammal herbivores (goats and rabbits) and by dry-farming agriculture (mostly barley). Agriculture and grazing together with low climatic precipitation levels promoted subnitrophylous types of herbaceous vegetation. So, today's Porto Santo vegetation is largely dominated by two, yet undescribed, herbaceous subnitrophylous phytocoenosis: Lino stricti-Stipetum capensis and Vicio costei-Echietum plantagini

    Nutritional characteristics and minerals of Lardosa cowpea landraces : a strategic legume species for the future

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    Cowpeas have been cultivated at least since the 8th century BC. [1; 2]. This grain legume (Vigna unguiculata L. Walp.), one of Africa's natural food gifts to the world, is characterized by its high nutritional value, ability to fix nitrogen and great tolerance to drought. The tolerance of this legume to low fertility soils, high temperatures and scarce water regimes makes this one of the most resistant crops to adverse edaphoclimatic conditions. It is certainly a very important culture in southern European countries like Portugal.Cultivar-Rede de competências para o desenvolvimento sustentável e inovação no setor Agroalimentar (CENTRO-01-0145-FEDER-000020).info:eu-repo/semantics/publishedVersio

    Nutritional characteristics and minerals of Lardosa cowpea landraces: a strategic legume species for the future

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    Cowpeas have been cultivated at least since the 8th century BC. [1; 2]. This grain legume (Vigna unguiculata L. Walp.), one of Africa's natural food gifts to the world, is characterized by its high nutritional value, ability to fix nitrogen and great tolerance to drought. The tolerance of this legume to low fertility soils, high temperatures and scarce water regimes makes this one of the most resistant crops to adverse edaphoclimatic conditions. It is certainly a very important culture in southern European countries like Portugal.Cultivar-Rede de competências para o desenvolvimento sustentável e inovação no setor Agroalimentar (CENTRO-01-0145-FEDER-000020).info:eu-repo/semantics/publishedVersio

    Nutritional and physicochemical analysis of quince from Cova da Beira region: similarities, differences and particularities

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    Quince, a fruit from the autumn season of the quince tree (Cydonia oblonga Miller), has a considerable nutritional value (e.g., pectin, vitamins C and B complex, minerals or chlorogenic acids). On the other hand, this fruit is characterized by having a hard, rough-looking pulp with a bitter and astringent taste. Since quince is not consumed raw, is mainly used in the production of jams and marmalades. Despite being easy to grow and weather resistant, its production is often neglected and undervalued. Thus, the study objective was to value quinces from the Cova da Beira region by the physicochemical and nutritional characterization, substantiating by how different production years and localization affect quince varieties properties.CULTIVAR (CENTRO-01-0145-FEDER-000020)info:eu-repo/semantics/publishedVersio

    Novel product using a native breed of sheep (Merino da Beira Baixa): smoked lamb

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    Merino breed emerged, in the textile industry renowned for their high-quality wool. This work aims to develop a novel food product. In Castelo Branco the “Merino da Beira Baixa” is part of 3 PDO cheeses and a PGI meat “Amarelo”, “Picante” e “Castelo Branco” and “Borrego da Beira”.The breed has experienced a decline in influence due to plummeting wool prices and an inability to compete with more productive breeds. This work aims to develop a novel food product using a ancestral breed and technique (smoking).Fusili European Union's Horizon 2020 under grant agreement n.º 101000717.info:eu-repo/semantics/publishedVersio
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