Encontrados 69 documentos, a visualizar página 1 de 7

The meaning of mainland Portugal beaches and dunes' psammophilic plant communit...

Due to their position of interface between the sea and land, the flora and vegetation of coastal beaches and dunes, occupy ecologically extreme, sensitive, unique and valuable habitats. The occurrence of a large number of endemic taxa and specific plant associations endowed with key ecological services and adapted to a stressful and harsh environmental gradient, gives them a high interest for nature conservatio...

Notas do Herbário Florestal do INIAV (LISFA): Fasc.XXXVI. Síntese do conhecimen...

A chave que de seguida se apresenta tem por base a desenvolvida por DÍAZ GONZÁLEZ & LLAMAS, 1987, com as devidas atualizações taxonómicas e nomenclaturais que entretanto ocorreram, e algumas correções com, posteriores e inevitáveis, adaptações de forma a incluir táxones não analisados nesse trabalho. Da bibliografia consultada procuramos averiguar as descrições originais dos táxones e/ou outras que preconizam d...

Supercritical fluid extraction of Eucalyptus globulus bark: a promising approac...

Eucalyptus bark contains significant amounts of triterpenoids with demonstrated bioactivity, namely triterpenic acids and their acetyl derivatives (ursolic, betulinic, oleanolic, betulonic, 3-acetylursolic, and 3-acetyloleanolic acids). In this work, the supercritical fluid extraction (SFE) of Eucalyptus globulus deciduous bark was carried out with pure and modified carbon dioxide to recover this fraction, and ...

PLANTS COMMUNITIES OF VASCULAR PLANTS OF MAINLAND PORTUGAL, AZORES AND MADEIRA

In this paper we mean the 830 associations, 239 alliances, 116 orders, and 63 phyosociological class presents on Portugal, Azores, and Madeira Islands, we mention also the 65 subaliances, 2 suborders and 4 subclasses. The higher syntaxa to subaliance have succint description, and the characteristics species are related. The new syntax and corrections are described and listed in an annex, also presents a florist...

Sobre as Orlas e Bosques Higrofílicos do Divisório Português

Orlas e bosques higrofílicos do Divisório Português: Salici purpureae-Populetea nigrae e Rubus vigoi

Workshop “Biogeography, Phylogeography, and the International Year of Biodivers...

Carta da Vegetação Natural Potencial de Caldas da Rainha

This article presents and discusses a Potential Natural Vegetation (PNV) Map of the Caldas da Rainha Municipality. After outlining the concept, an assessment is made of the conditioning factors that affect the PNV (soil, geology, lithology, bioclimate). A model allowing for the estimation of the PNV is then put forward based on a correspondence drawn between the PNV and the relevant biotopic variables. The resu...

Caracterização geo-ecológica dos sistemas de cordões dunares da Estremadura

GEO-ECOLOGYCAL STUDY OF SOME DUNE SYSTEMS IN THE PORTUGUESEESTREMADURA. The Portuguese Estremadura coastal area between Nazaré and Peniche displays great variety of landforms. Most are cliff systems cut in sedimentary rocks with incisions controlled by tectonic activity. In the river mouths sand bars and beaches are present. Beach systems make up about 40% of the referred coastline and have ridges of diverse fo...

Circulação de ar na península de Tróia e costa da Galé

AIR FLOW OVER THE TRÓIA PENINSULA AND THE COSTA DA GALÉ – In the summer, the Portuguese western coast is characterised by an evident dominance of north and northwest wind directions. Due the influence of the Arrábida mountain, the north wind suffers a deflection and blows from the west, southwest or even south over the Tróia Peninsula, where in the summer months there is a high frequency of wind directions betw...

A flora e a vegetação das Dunas de S. Jacinto

(sem entrada)