|
|
|
|
|
| Costa, José C.; Aguiar, Carlos; Capelo, J.; Lousã, Mário; Castro Antunes, J.H.S.; Honrado, João; Izco, J.; Ladero, M.. |
| Giestais são a designação vulgar em português para as comunidades silicícolas que se inserem na classe Cytisetea scopario-striati e são dominadas por espécies de leguminosas dos géneros Cytisus, Genista, Adenocarpus e Retama. Esta classe tem o seu óptimo na Península Ibérica e representa normalmente as orlas ou etapas de regressão de bosques climácicos da Quercetalia roboris e da Quercion broteroi. No presente trabalho apresentam-se as diversas comunidades da classe Cytisetea scopario-striati que ocorrem em Portugal continental. Propõem-se os seguintes novos sintáxones: Ulici latebracteati-Cytisetum striati cytisetosum grandiflori, Cytiso multiflori-Retametum sphaerocarpae cytisetosum scoparii, Cytiso multiflori-Retametum sphaerocarpae cytisetosum... |
| Tipo: Article |
Palavras-chave: Vegetação de Portugal; Cytisetea scopario-striati. |
| Ano: 2003 |
URL: http://hdl.handle.net/10198/5350 |
| |
|
|
| Capelo, J.; Mesquita, Sandra; Costa, José C.; Ribeiro, Silvia; Arsénio, Pedro; Neto, Carlos; Monteiro-Henriques, T.; Aguiar, Carlos; Honrado, João; Espírito-Santo, Dalila; Lousã, Mário. |
| An attempt to obtain a consistent spatial model of natural potential vegetation (NPV) for the mainland Portuguese territory is reported. Spatial modeling procedures performed in a Geographic Information System (GIS) environment, aimed to operationalize phytosociological expert-knowledge about the putative distribution of potential zona1 forest communities dominant in the Portuguese continental territories. The paradigm for NPV assumed was that of RIVAS-MARTINEZ (1976) and RIVAS-MARTINEZ et al. (1999), which presupposes, for a given territory, a univocal correspondence between a uniform combination of bioclimatic stage and lithology given a biogeographical context, and a unique successional sequence leading to a single climax community (i. e. a vegetation... |
| Tipo: Article |
Palavras-chave: Vegetation; Natural Potential Vegetation; Portugal; GIS. |
| Ano: 2007 |
URL: http://hdl.handle.net/10198/5379 |
| |
|
| |
|
|
| Costa, José C.; Aguiar, Carlos; Capelo, J.; Lousã, Mário; Neto, Carlos. |
| Apresentam-se alguns conceitos fundamentais usados em Biogeografia. Propõe-se uma tipologia biogeográfica para Portugal continental desenvolvida a partir dos trabalhos de S. Rivas-Martínez para a Península Ibérica, principalmente: RIVAS-MARTÍNEZ et al (1990). São enumeradas as unidades biogeográficas reconhecidas no território continental nacional e discutem-se os seus limites até ao nível de Superdistrito, bem como os critérios e fundamentos florísticos e fitossociológicos usados para a sua segregação. Apresenta-se uma primeira aproximação cartográfica à escala 1 : 2 500 000 das unidades biogeográficas reconhecidas. |
| Tipo: Article |
Palavras-chave: Biogeografia; Fitossociologia; Corologia; Portugal. |
| Ano: 1998 |
URL: http://hdl.handle.net/10198/714 |
| |
|
| |
|
|
| Capelo, J.; Costa, José C.; Jardim, Roberto; Sequeira, Miguel; Aguiar, Carlos; Lousã, Mário. |
| The endemic caulirosetted microphanerophytes [with a rosette of leaves on top of a long woody few-branched naked stem] – e.g. Euphorbia mellifera, Isoplexis sceptrum, Melanoselinum decipens, Musschia wollastonii and Sonchus fruticosus – are among the most striking plants of Madeira Island. They are often found in the "levadas" artificial system of channels that runs through the Ocotea foetens forest [Clethro arboreae-Ocoteetum foetentis]. These plants organize themselves in a particular phytocoenosis – Isoplexido sceptri-Euphorbietum melliferae ass. nova. – that reflects a worldwide recurrent phenomenon in forest ecosystems: the presence of plants adapted to cuts in the continuous crown layer of dense forest, such as dry ravines, forest clearings produced... |
| Tipo: Article |
Palavras-chave: Vegetationof Portugal; Madeira. |
| Ano: 2003 |
URL: http://hdl.handle.net/10198/5366 |
| |
|
| |
|
|
| Capelo, J.; Costa, José C.; Jardim, Roberto; Sequeira, Miguel; Aguiar, Carlos; Espírito-Santo, Dalila; Lousã, Mário. |
| 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. |
| Tipo: Article |
Palavras-chave: Coastal vegetation; Porto Santo Island. |
| Ano: 2003 |
URL: http://hdl.handle.net/10198/5334 |
| |
|
|
| Jardim, Roberto; Sequeira, Miguel; Capelo, J.; Aguiar, Carlos; Costa, José C.; Espírito-Santo, Dalila; Lousã, Mário. |
| 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... |
| Tipo: Article |
Palavras-chave: Nitrophylous vegetation; Madeira. |
| Ano: 2003 |
URL: http://hdl.handle.net/10198/5355 |
| |
|
|
|
