Reactivação alpina de estruturas variscas entre Montargil e Aldeia da Mata no bordo oriental da Bacia do Baixo Tejo

A área estudada localiza-se no bordo oriental da bacia do Baixo Tejo, no Centro-Sul de Portugal Continental (Alto Alentejo). As falhas que aectam os sedimentos cenozóicos, responsáveis pelo aparecimento de alguns retalhos de substrato antigo do Paleozóico, têm orientação geral semelhante à das principais estruturas tectónias variscas, WNW-ESE, NE-SW e NNW-SSE, sugerindo a sua reactivação. As falhas, situadas no contacto entre io substrato e os sedimentos cenozóicos, sugerem o seu controlo no levantamento do soco durante o Cenozóico

Estudos de neotectónica na falha de Carcavai, Algarve Oriental

Estudos levados a cabo na zona da falha de Carcavai revelaram a ocorrência de deformações (fracturação e filões detríticos) em sedimentos plio-quaternários, indicando actividade neotectónica. A generalidade das fracturas aparenta corresponder à expressão superficial secundária da actividade naquela zona de falha. Os dados adquiridos apontampara uma zona de falha complexa de desligamento esquerdo, com componente vertical inversa, desde o final do Mesozóico ou início do Cenozóico. Os filões detríticos foram interpretados como estruturas resultantes de liquefacção induzida sismicamente

Neotectonic activity on the Carcavai fault zone (Algarve, Portugal)

Studies performed on the Carcavai fault zone, Eastern Algarve, revealed several deformational features in Plio-Quaternary sediments with potential neotectonic implications. These features include fracturing (faults and joints) and clastic dikes, located along the Carcavai fault. Most of the fractures appear to be the expression of the fault activity affecting the Plio-Quaternary sediments. This is suggested by a consistent strike, subparallel to the major tectonic structure, and by the location pattern. Evidences of the fault activity were also identified in the Mesozoic and Paleozoic rocks, though the age of that deformation is poorly constrained. It consists in the presence of zones of intensely brecciated rock and of adjoining coarse sedimentary deposits probably related to the dismantling of a fault scarp. The acquired data point to a late hercynian structure, reactivated as a left-lateral strike-slip fault with a thrust component during the Plio-Quaternary

Cartografia geológica sistemática para a edição da Folha 43-A, Cuba (Carta Geológica de Portugal, escala 1:50 000) - Ponto da situação

A cartografia geológica sistemática para a edição da Folha 43-A, Cuba, tem vindo a desenvolver-se desde 2009, com base em levantamentos de campo realizados à escala 1:25000. As unidades cartografadas até à actualidade são incluídas (1) no Maciço de Beja - Pórfiros de Baleizão, Dioritos de Monte Novo e Complexo Gabro Diorítico de Cuba, (2) no sector de Montemor-Ficalho - formações meta-sedimentares e vulcano-sedimentares do Neo-Proterozóico ao Carbónico e (3) nos depósitos do Cenozóico - constituídos por alternâncias de sedimentos finos e grosseiros de idades que variam entre o Paleogénico e o Quaternário. Com este trabalho pretende-se apresentar a cartografia geológica desenvolvida até à actualidade na região de Cuba, Alentejo

Characterization of Campylocarpon pseudofasciculare associated with black foot of grapevine in southern Brazil

The incidence and severity of black foot has been recently increasing in nurseries and vineyards of southern Brazil. The goal of the present study was to characterize Campylocarpon isolates associated with black foot of grapevines (Vitis spp.) using multi-gene DNA analysis (internal transcribed spacers [ITS rDNA], β-tubulin and histone H3) and morphological characteristics, and to test the pathogenicity of the isolates in grapevine (Vitis labrusca cv. Bordô). The three DNA regions analyzed indicated that all the isolates belonged to Campylocarpon pseudofasciculare. Their morphology was similar to descriptions published for the species. Isolates exhibited umber- to chestnut-coloured colonies and macroconidia (38.0 × 7.0 μm) predominantly with three septa. All the isolates inoculated in V. labrusca cv. Bordô caused typical symptoms of black foot. This is the first report of Campylocarpon pseudofasciculare in southern Brazil

Different cultures, different values: The role of cultural variation in public’s WTP for marine species conservation

Understanding the cultural variation in public preference for marine species is a necessary pre-requisite if conservation objectives are to include societal preferences in addition to scientific considerations. We report the results of a contingent study undertaken at three case-study sites: Azores islands (Portugal), Gulf of Gdansk (Poland) and Isles of Scilly (UK). The study considered species richness of five specific marine taxa (mammals, birds, fish, invertebrates and algae) as proxies of marine biodiversity and the aim of analysis was to estimate from a multi-site perspective public’s willingness to pay (WTP) to avoid increased levels of species loss (reduction of species richness) for different marine taxa. Results, based on 1502 face-to-face interviews, showed that income, education and environmental awareness of the respondents were significant predictors of WTP for marine species conservation. Results also indicated that respondents in each of the European locations had different preferences for marine taxa. In the Azores, although mammals and fish were valued highly, small differences occurred in the WTP among different taxa. Respondents in the Isles of Scilly put a relatively low value on fish while algae and marine mammals were highly valued. In Gdansk, respondents defined a clear order of preference for marine mammals>fish>birds>invertebrates and algae. These findings suggested that cultural differences may be important drivers of valuation and undermines the commonly held premise that charismatic/likeable taxa consistently have a disproportionately strong influence on WTP for biodiversity conservation. We conclude that conservation policy must take account of cultural diversity alongside biological diversity