Fonseca, J.P.; Levy, A.; Henriques, R.; Costa, José Carlos; Neto, C.; Robalo, J.
In this paper, we analyzed the phylogeny of the section Bulbocodii (genus Narcissus; Amarillydaceae) using the matK and
trnL-F fragments of cpDNA in order to review the validity of the recognized taxa. Our results indicate that Narcissus obesus
should be considered a valid species, and that N. blancoi is a distinct taxon. In addition, seven previously recognized species,
N. juressianus, N. subnivalis, N. graellsii, N. conspicuus, N. citrinus, N. nivalis, and N. quintanilhae, should be assigned to an
infraspecific rank under N. bulbocodium, as they are not valid species. In addition, we analyzed the distribution of the three
morphological characters widely used in the systematics...
Rivas-Martinez, S.; Izco, Jesús; Díaz-González, T.; Penas, A.; Costa, José Carlos; Amigo, Javier; Herrero, L.; Giménez de Azcárate, J.; Del Rio, Sara
Borders of the ten biogeographic districts belonging to the Galician-Portuguese sector are described as wellas its bioclimatic and vegetational features. Bioclimatic diagnoses /isobioclimates) of some weather stations based on their bioclimatic parameters and indices are shown. Finalli, climatophilous, climato-temporihigrophilous and edaphoxerophilous sreies; edaphohigrophilous fluvial and lacustrine geoseries as well as coastal geopermaseries; permaseries and minoriseries, secondary forests are described for each district
Rivas-Martinez, S.; Penas, A.; Diaz-González, T.E.; Río, S.; Cantó, P.; Herrero, L.; Gomes, C. Pinto; Costa, José Carlos
A preliminary biogeographical typology of Spain and Portugal is established in the present paper. Two regions, 5 subregions, 13 provinces, 18 subprovinces, 62 sectors and 267 districts are recognized. Its biogeographic content besides nomenclatural changes of those units previously described are shown. Finally, its names in english, spanish and portuguese are stated
Rivas-Martinez, Salvador; Lousã, Mário; Costa, José Carlos; Duarte, Maria Cristina
The results of the study of the bioclimate, biogeography, flora and vegetation of Cabo Verde Islands, after seven years
of field works in all inhabited isles are presented in this paper. Tropical hyperdesertic to pluviseasonal, upper infra- to
low supratropical and upper ultrahyperarid to upper dry, and occasionaly lower subhumid (short period years), are the
bioclimates in these archipelago. Biogeographically they are situated in the Paleotropical Kingdom, Afrotropical Subkingdom,
Tropical Saharan Region, and Cabo Verde Province. Eight new species are described: Acacia caboverdeana,
Asphodelus mariolousae, Frankenia pseudoericifolia, Hyparrhenia caboverdeana, Lotus chevalieri, Polycarpaea
caboverdeana, Suaeda caboverdeana and Tetraena vicentina, and also fifteen new combinations are proposed. In...
Ribeiro, Ana C.; Monteiro, Sara V.; Carrapiço, Belmira M.; Ferreira, Ricardo Boavida
Legume lectins comprise a structurally related, Ca/Mn-dependent, widespread,
abundant and well characterized lectin family when compared to the large number of lectins
from other sources described in the literature. Strangely enough, no specific function has
been assigned to them aside from a possible role in storage and/or defense. Using a recent
and fine-tuned methodology capable of specific lectin identification, β-conglutin, Vicia faba
vicilin and β-lathyrin, the vicilin storage globulins from Lupinus albus, V. faba and
Lathyrus sativus, respectively, were shown to be capable of affinity binding to thoroughly
washed erythrocyte membranes and of specific elution with appropriate sugars. Based on
this evidence and on sparse data published in...
Cortinhas, Ana; Erben, Mathias; Paes, Ana Paula; Espírito Santo, Maria Dalila; Guara-Requena, Miguel; Caperta, Ana D.
Part of a special issue on halophytes and saline adaptations
Ramos, Miguel Jesus Nunes; Coito, João Lucas; Silva, Helena Gomes; Cunha, Jorge; Costa, Maria Manuela Ribeiro; Rocheta, Margarida
Monteiro, Sara; Carreira, Alexandra; Freitas, Regina; Pinheiro, Ana Margarida; Ferreira, Ricardo Boavida
Costa, J.Miguel; Grant, Olga M.; Chaves, M.Manuela
Bellu, Annalisa; Bugalho, Miguel N.; Monteiro-Henriques, Tiago; Costa, José Carlos; Rego, Francisco Castro
Large mammalian herbivores are keystone species
in different ecosystems. To mediate the effects of large
mammalian herbivores on ecosystems, it is crucial to understand
their habitat selection pattern. At finer scales, herbivore
patch selection depends strongly on plant community
traits and therefore its understanding is constrained by patch
definition criteria. Our aim was to assess which criteria for
patch definition best explained use of meadows by wild,
free-ranging, red deer (Cervus elaphus) in a study area in
Northeast Portugal. We used two clustering criteria types
based on floristic composition and gross forage classes, respectively.
For the floristic criteria, phytosociological approach
was used to classify plant communities, and its
objectivity evaluated with a mathematical...
Almeida, Diana; Neto, Carlos; Esteves, Luciana S.; Costa, José Carlos
Human-induced land-use changes have resulted in loss and degradation of intertidal environments
worldwide. Saltmarsh ecosystem dynamics in Portugal are greatly influenced by historic uses and
consequent habitat degradation. This study uses an original approach combining vegetation surveys and
spatial analysis of historic maps and aerial photographs to assess the effects of land use changes on
saltmarshes in two areas in the Algarve, southern Portugal. Historical maps from c. 1800 and aerial
photographs from 1958 to 2010 were analyzed to map saltmarsh ecosystems and quantify land-use
changes in the Alvor estuary and Arade River. Between c. 1800 and 2010 more than half of saltmarshes
were lost due to...