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New contributions on flora and vegetation of northeastern Portugal ultramafic o...

In this work we present some syntaxonomic novelties on the vegetation of the referred ultramafic outcrops focused on three new associations: Jonopsidio abulensis-Sedetum maireani, Armerio daveaui-Agrostietum castellanae and Seseli peixotoani- Avenuletum lusitanicae; in addition, a new nomenclatural combination of an endemic taxon from the Morais massif (Armeria langei subsp. marizii) is proposed. We also clarif...

Vascular plant communities in Portugal (Continental, the Azores and Madeira)

In this paper we propose a syntaxonomic scheme, according to the Code of Phytosociological Nomenclature for the vegetation of Portugal: continental and the Azores and Madeira archipelagos. The scheme encompasses 827 associations ( 4 communities), 245 alliances, 116 orders, and 64 vegetation classes. The 58 suballiances, 2 suborders and 4 classes, are also mentioned, as auxilliary ranks. For the higher syntaxa d...

Vascular plant communities in Portugal (continental, the Azores and Madeira)

In this paper we propose a syntaxonomic scheme, according to the Code of Phytosociological Nomenclature for the vegetation of Portugal: continental and the Azores and Madeira archipelagos. The scheme encompasses 827 associations (4 communities), 245 alliances, 116 orders, and 64 vegetation classes. The 58 suballiances, 2 suborders and 4 subclasses, are also mentioned, as auxiliary ranks. For the higher syntaxa ...

Estudo da flora, vegetação e paisagem vegetal da Serra da Arrábida

Flora

The invaluable commented checklist of the vascular flora of the ultramafic rocks of northeastern Portugal of Pinto da Silva (1970) has been recently reviewed by Aguiar and Monteiro-Henriques (ined.). These authors’ accept 568 taxa, 29% of which (164 taxa) are new additions to the original catalogue of Pinto da Silva (1970). A subset of it with the most frequent and floristically relevant species is presented in...

Vegetation

Due to their complexity, vegetation phenomena are not understandable without a consistent conceptual framework. A few indispensable concepts to explore the northeastern Portuguese ultramafic vegetation are set out in Tables 9 and 10. Association. The Phytosociology fundamental abstract unit is the association or associatio. The concept of association comprises an ecological-taxonomic model of the reality. There...

Bioclimatology, biogeography and land use of Trás-os-Montes

Frequently climate is considered the first factor influencing flora, and consequently, vegetation distribution (Walter 1986; Woodward & B. G. Williams 1987; Capelo 2003; Peinado et al. 2007). Bioclimatology is the science that investigates the relationship between climate and the distribution of organisms. Rivas-Martínez’s Worldwide Bioclimatic Classification (RMWBC) has been developed by Rivas-Martínez with ...

Arrelvados vivazes da bacia hidrográfica do Rio Paiva (Portugal).

Apresenta-se um estudo sistemático dos arrelvados naturais vivazes da bacia hidrográfica do rio Paiva, em particular das classes: 1) Festucetea indigestae; 2) Stipo giganteae-Agrostietea castellanae; 3) MolinioArrhenatheretea e 4} Nardetea. Com base em inventários realizados desde 2004, bem como em trabalhos publicados onde se estudou o território em causa, reconhecem- se oito associações e uma comunidade enqua...

A subaliança Fraxino angustifoliae-Ulmenion minoris em Portugal continental.

A subaliança Fraxino angustifoliae-Ulmenion minoris (Populion albae, Populet alia albae, Salici purpureaePopuletea nigrae) reúne os bosques climácicos tempori higrófilos das zonas mais elevadas das margens dos rios - raramente inundadas - bem como de cabeceiras de linhas de água - onde o caudal não chega a ser permanente. Com base em inventários realizados desde 2004, são propostos dois novos sintáxones no âmbi...

Cytiso grandiflori-Arbutetum unedonis uma nova associação de medronhais do sect...

No presente trabalho descreve-se uma nova associação Cytiso grondiflori-Arbutetum unedonis (Quercetea ilicis, Pistacio lentisci-Rhamnetalia alaterni, Erician arboreae) que representa a primeira etapa de substituição, ou orla, dos sobreirais de Physospermo cornubiensis Quercetum suberis quercetosum jagineae e dos carvaIhais de Hedero hibernieae-Quercetum /agineae, no sector Lusitano-Duriense.