Browsing by Author "Capelo, J."
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- Uma ericácea nova para a flora portuguesaPublication . Capelo, J.; Bingre, P.; Arsénio, Pedro; Espírito-Santo, Maria Dalila
- Geographic variation among iberian communities of the exotic halophyte Cotula coronopifoliaPublication . Costa, José Carlos; Neto, C.; Arsénio, Pedro; Capelo, J.The exotic annual forb Cotula coronopifolia has locally invaded salt marsh communities naturally dominated by Spergularia marina along large parts of the Iberian coastline. While the floristic composition of C. coronopifolia dominated communities on the Atlantic coast of northern Portugal has already been described, this information was missing for the southern part of the country. We carried out a phytosociological study at 21 sites along the south-western and southern coast of mainland Portugal to determine the ecology and syntaxonomical status of these communities, and to compare them to the Atlantic ones. Plant communities co-dominated by C. coronopifolia and S. marina were generally found in the sub-halophilous inner part of salt marshes. They occupied gaps within taller perennial vegetation (Juncus maritimus formations), such as small pools temporarily inundated with brackish waters. Southern communities differed from the northern ones by the high abundance of Triglochin barrelieri and the absence of salt-intolerant species that are present in the Atlantic communities. This difference may result from the drier summer climate in southern regions, leading to intense water evaporation and thus, more saline conditions. We propose to classify the Mediterranean communities in a new association, the Cotulo coronopifoliae– Triglochinetum barrelieri. High abundance of Limonium diffusum further allowed the distinction of a new subassociation limonietosum diffusi for the southernmost part of Portugal. Results show that invasive exotic plants can form new phytosociological associations with a characteristic species composition, but that these community types, despite being dominated by the same invader, still show ecological and geographical differentiation.
- A global view on the riparian forests with Salix neotricha and Populus alba in the Iberian Peninsula (Portugal and Spain)Publication . Costa, J. C.; Neto, Carlos; Capelo, J.; Lousã, M.; Rivas-Martínez, S.Forests dominated by Salix neotricha, and Populus alba found along the mesoeutrophic rivers in the Iberian Peninsula, were studied. We discuss the floristic circumscription, chorology, and community segregation based on the available releve´s of all Iberian riparian communities included in Populenion albae. Eleven formerly described communities were analyzed and due to original floristic combination, habitat features, and biogeographic scope, a new willow and poplar forest type is proposed within a well-defined biogeographical unit (Sadensean-Dividing Portuguese Subprovince): Clematido campanifloraeSalicetum neotrichae. This syntaxon is found under a semi-hyperoceanic thermomediterranean to lower mesomediterranean, subhumid to humid bioclimate. Cluster analysis including all Iberian communities of Populenion albae shows a clear floristic segregation within the suballiance and confirms the originality of the new association. Furthermore, chemical characteristics of the water along some of the Portuguese watercourses with Populenion albae were studied and compared to the oligotrophic rivers occupied by Osmundo-Alnion communities. This study suggests that floristic separation between the communities of Populenion and Osmundo-Alnion is accompanied by a differentiation of the water trophic level.
- A methodological approach to potential vegetation modeling using GIS techniques and phytosociological expert-knowledge: application to mainland PortugalPublication . Capelo, J.; Mesquita, S.; Costa, José Carlos; Arsénio, Pedro; Neto, C.; Monteiro-Henriques, T.; Aguiar, C.; Honrado, J.; Espírito-Santo, Maria Dalila; Lousã, M.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 dominam in the Portuguese continental territories. The paradigm for NPV assumed was that of RIVAS-MARTINE(1Z9 76) and RIVAS-MARTINEeZt al. (1999), which presupposes, for a given territory, a univocal correspondence between a uniform combination of bioclimatic stage and lithology' gi ven a biogeographical context, and a unique successional sequence leading to a single climax community (i. e. a vegetation series (VS)). Information issued from both literature and a team of phytosociologists possessing detailed knowledge about Portuguese vegetation, namely about forests and its seria1 vegetation, was acknowledged as a starting point for the construction of such a habitat-vegetation correspondence model. First, a bioclimatic map concerning the "Worldwide Bioclimatic Classification System" (WBCS) of RIVAS-MARTINE(1Z9 81 -2004), obtained by multivariate grostatistical interpolation issuing from the work of MESQUITA(2 005), was set. Severa1 partia1 matrices, one for each biogeographical Province, combined such habitat statements to VS. Initial incoherence due to vagueness of statements led to an important amount of both superimposition of VS and habitat gaps in the matrices. Further rearrangement of the table according to known field distribution of VS by experts allowed setting an approximate univocal correspondence VS-habitat. Finally, an intersection of bioclimatic, lithology and biogeographic maps yielded over a thousand habitat combinations to be associated each to a single VS through implementation of the matrices as a set of rules. Again, inconsistencies were solved likewise, but this time by direct observation of the map by experts. Keeping of phytosociological consistency and fidelity to information on actual vegetation field distribution was always mandatory during the process
- Notas do herbário florestal do INIAV (LISFA): fasc. XXXVIIPublication . Capelo, J.; Sequeira, M.M.; Costa, José Carlos; Portela-Pereira, E.; Jardim, Roberto; Neto, C.; Schaefer, H.; Espírito-Santo, Maria Dalila; Lousã, M.; Rivas-Martinez, S.
- Phytosociologic associations and Natura 2000 habitats of Portuguese coastal sand dunesPublication . Neto, Carlos; Costa, J. C.; Honrado, J.; Capelo, J.The portuguese coastline is quite long and the littoral ecosystems are of the outmost importance in the context of the national flora and vegetation. The diversity of vegetation types and the endemicity of their flora justify the attention paid to coastal habitats in the implementation of the Natura 2000 network. In this paper we present a synatoxonomical revision of the phanerophytic, chamaephytic and hemicryptophytic communities occurring in the sandy coastal areas of Portugal, together with their correspondence to the “Natura 2000” natural habitat types. The production of synthetic tables with all available relevés has allowed the segregation of plant community types. We also include maps concerning the distribution of all validated vegetation types occurring in the portuguese sandy coastal areas.
- Relatório. Protocolo ADISA/CML - Monsanto 2030Publication . Magalhães, M.R.; Pena, S.B.; Cunha, N.; Franco, L.M.; Muller, A.; Capelo, J.; Mesquita, S.
- The coastal vegetation of the portuguese Divisory Sector: dunes, cliffs, saltmarshes and low-scrub communitiesPublication . Costa, José Carlos; Lousã, M.; Capelo, J.; Espírito-Santo, Maria Dalila; Izco, J.; Arsénio, Pedro
- The landscape and plant communities of Serra da ArrábidaPublication . Costa, José Carlos; Capelo, J.; Arsénio, Pedro; Monteiro-Henriques, T.The field trip takes place in the biogeographic territories of the Sadensean-Dividing Portuguese Subprovince (Coastal Lusitan- Andalusian Province, Mediterranean Region), throughout the upper thermomediterranean thermotype and subhumid ombrotype.
- The scrubland of limestone-derived decarbonated soils of the western Iberian PeninsulaPublication . Costa, J. C.; Pinto-Gomes, C.; Lopes, M. C.; Neto, Carlos; Monteiro-Henriques, T.; Arsénio, P; Silva, V.; Capelo, J.; Lousã, M.; Rivas-Martínez, S.In the present article, the proposal of a new suballiance, Lavandulo luisieri-Cistenion albidi, is presented, constituted by chamaephytic and nanophanerophytic communities in eroded decarbonated soils derived from limestones (leptosols, chromic luvisols and cambisols) in the dry to lower hyperhumid, thermo-mesomediterranean bioclimatic levels. It is distributed throughout the western Iberian Peninsula in the Coastal Lusitan-Andalusian and Lusitan-Extremadurean biogeographical territories. It is positioned in the Ulici argentei-Cistion ladaniferi, Lavanduletalia stoechadis, Cisto-Lavanduletea. The new associations Anthyllido maurae-Ulicetum jussiaei, Sedo albi-Cistetum crispi and Thymetum congesti are also described. The multivariate analysis confirmed the segregation of this new suballiance, as well as the new associations