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Universidade de Coimbra (2012)

Flora e vegetação da zona calcária Souselas/Brasfemes

Antunes, Tânia Maria Fernandes

Titre : Flora e vegetação da zona calcária Souselas/Brasfemes

Auteur : Antunes, Tânia Maria Fernandes

Université de soutenance : Universidade de Coimbra

Grade : Mestrado em Biologia apresentada 2012

Résumé
The pocket of marly limestone and marl Souselas/Brasfemes lays between Pampilhosa do Botão and the Alvaiázere-Sicó limestone complex, respectively their northern and southern boundaries, and the Maciço Hespérico and the Orla Mesocenozóica Ocidental, the eastern and western limits. The area has arid soil and typical Mediterranean climate, factors that favor the development of high floristic richness with species having different reproductive strategies. The main objectives of this thesis were the establishment of the theoretical and practical fundaments for a Field Guide on the diversity and reproductive strategies of the plants of the area Souselas/Brasfemes. For that, it was carried out a survey involving plant collecting, identification, and capture of digital images. The 192 taxa identified involved a large variety of families (54) and Asteraceae, Poaceae, Fabaceae, Lamiaceae and Orchidaceae dominated the sample in terms of species number. Sixty one taxa were selected and described in great detail in the Field Guide for easy identification in the field and information assembled on the pollination mechanisms and dispersal of diaspores. Most of the species has an overall Mediterranean distribution and their pollination is mainly effected by biotic factors, namely insects ; a few taxa are self-pollinated, while others adopt mechanisms to promote cross-pollination (i.e. hercogamy, dicogamy and self-incompatibility). In some taxa diaspores are dispersed by birds. It is also described the general lay-out of the Field Guide.

Mots clés  : Vegetação ; Zonas calcárias ; Souselas/Brasfemes ; Geologia ; Descrição de Angiospérmicas ; Biologia reprodutiva ; Dispersão ; Guia de Campo

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Page publiée le 30 janvier 2016, mise à jour le 22 août 2018