1,251 research outputs found
Biodiversity of marine tardigrades from the northern coast of Portugal (Iberian Peninsula)
No full textRubal, Marcos, Veiga, Puri, Fontoura, Paulo, Santos, Erika, Sousa-Pinto, Isabel (2016): Biodiversity of marine tardigrades from the northern coast of Portugal (Iberian Peninsula). Zoological Journal of the Linnean Society 178 (4): 747-754, DOI: 10.1111/zoj.12462, URL: http://dx.doi.org/10.1111/zoj.1246
<b>Supplemental Material - Quality improvement of Nd: YAG laser marked DMC and QR codes on the surface of PBT/glass fiber composites by DOE methodology</b>
No full textSupplemental Material for Quality improvement of Nd: YAG laser marked DMC and QR codes on the surface of PBT/glass fiber composites by DOE methodology by Rita de Cássia Mendonça Sales-Contini, João Pedro Costa, Arnaldo MG Pinto1, Francisco JG Silva, Isabel M. Pinto and Vitor FC Sousa in Journal of Thermoplastic Composite Materials.</p
Centenário de Ernesto de Sousa (1921-1988)
No full textARTE E CULTURA VISUAL é uma revista do Centro de Investigação e de Estudos em Belas-Artes (CIEBA), com a periodicidade de um número anual, a sair no final de cada ano. O âmbito a que se dedica é, como o título faz antever, as artes plásticas e a cultura visual, procurando um discurso reflexivo, diverso, actual, problematizante e orgânico, que permita conferir enfoque aos dispositivos da arte e das imagens artísticas na sua ontologia e nos seus contextos – pontuais ou sistémicos – históricos, culturais, estéticos, institucionais, sociais, e, inclusivamente, económicos e políticos. Centrando-se neste campo de pensamento – e as imagens assumem também uma forma de pensamento –, a revista convoca pensadores pluridisciplinares e artistas que desejem partilhara sua reflexão e a sua obra. Cada número é dedicado a um tema. Este número é dedicado ao CENTENÁRIO DE ERNESTO DE SOUSA (1921-1988). José Ernesto de Sousa foi uma figura relevante e viva no contexto da arte portuguesa contemporânea.Indivíduo entusiasta e de notável versatilidade – artista, crítico, cineasta, “operador estético”, jornalista, ensaísta, curador, professor, cineclubista –, foi um catalisador de pessoas e de práticas artísticas, especialmente ao longo dos anos 70, num percurso ecléctico, que se prolongou pelos anos 80, até à sua morte. Ernesto de Sousa perseguiu uma fundamental modernidade e contribuiu para a sua integração no âmbito da arte em Portugal. Este número é uma homenagem ao seu percurso e à sua obra. Obrigada a todas as pessoas que para ele contribuíram, e um agradecimento especial à Isabel Alvesinfo:eu-repo/semantics/publishedVersio
Centenário de Ernesto de Sousa (1921-1988)
No full textARTE E CULTURA VISUAL é uma revista do Centro de Investigação e de Estudos em Belas-Artes (CIEBA), com a periodicidade de um número anual, a sair no final de cada ano. O âmbito a que se dedica é, como o título faz antever, as artes plásticas e a cultura visual, procurando um discurso reflexivo, diverso, actual, problematizante e orgânico, que permita conferir enfoque aos dispositivos da arte e das imagens artísticas na sua ontologia e nos seus contextos – pontuais ou sistémicos – históricos, culturais, estéticos, institucionais, sociais, e, inclusivamente, económicos e políticos. Centrando-se neste campo de pensamento – e as imagens assumem também uma forma de pensamento –, a revista convoca pensadores pluridisciplinares e artistas que desejem partilhara sua reflexão e a sua obra. Cada número é dedicado a um tema. Este número é dedicado ao CENTENÁRIO DE ERNESTO DE SOUSA (1921-1988). José Ernesto de Sousa foi uma figura relevante e viva no contexto da arte portuguesa contemporânea.Indivíduo entusiasta e de notável versatilidade – artista, crítico, cineasta, “operador estético”, jornalista, ensaísta, curador, professor, cineclubista –, foi um catalisador de pessoas e de práticas artísticas, especialmente ao longo dos anos 70, num percurso ecléctico, que se prolongou pelos anos 80, até à sua morte. Ernesto de Sousa perseguiu uma fundamental modernidade e contribuiu para a sua integração no âmbito da arte em Portugal. Este número é uma homenagem ao seu percurso e à sua obra. Obrigada a todas as pessoas que para ele contribuíram, e um agradecimento especial à Isabel Alvesinfo:eu-repo/semantics/publishedVersio
Cetacean occurrence and spatial distribution: Habitat modelling for offshore waters in the Portuguese EEZ (NE Atlantic)
No full textSegurança marítima no Golfo da Guiné
No full textConferência realizada no dia 3 de Dezembro de 2024, no Instituto da Defesa Nacional, com transmissão online para a Escola Superior de Defesa do Brasil. A sssão de abertura foi da responsabilidade da Prof. Doutora Isabel Ferreira Nunes, Diretora do Instituto da Defesa Nacional. A conferência de abertura foi proferida pelo Tenente-General João Boga Ribeiro. Nos painéis 1 e 2 foram intervenientes Rui Garrido (IDN/UPT), Miruna Nica (UPT), Maria Sousa Galito (Universidade Lusíada Lisboa), Teresa Nogueira Pinto (Universidade Lusófona Lisboa), Ricardo Real Sousa (UBI), Francisca Saraiva (ISCSP/IDN), Francesca Mercurio (ISCTE) e Sabrina Medeiros (Universidade Lusófona Lisboa).info:eu-repo/semantics/publishedVersio
CETUS: Cetacean monitoring surveys in the Eastern North Atlantic
No full textData is provided in the recent OBIS-ENV-DATA format, and comprises 8913 georeferenced positions associated with 3195 occurrences of 44 marine taxa.-- 3 filesThe CETUS dataset contains effort-based occurrence records collected during a cetacean monitoring programme in the Eastern North Atlantic, since 2012This research was partially funded by the EU FEDER/FEMP and Portuguese Foundation for Science and Technology (FCT) under the Portugal2020 (Lisboa2020, Algarve2020 and MAR2020) Programme through project OBSERVA.PT (MAR-01.04.02-FEAMP-0002)Peer reviewe
Cetacean monitoring in Northeastern Atlantic Ocean – Occurrence and distribution for cetacean species in the Canary Basin
No full textCetaceans are ecologically important as storers and transporters of energy in marine ecosystems. They are top-down regulators maintaining the prey-predator balance in these complex and dynamic environments. Therefore, the understanding of cetacean distribution and habitat preferences represents a priority issue in marine conservation being an important support for management plans. In the Atlantic Ocean there are, at least, 30 cetacean species, but their distribution is poorly understood. Data come from few regional ‘hot-spots’ (e.g. Azores and Madeira), where research effort limits data collection to a few miles from the coast. Therefore, the knowledge about cetacean distribution in the Atlantic has to be considered very localized and not representative of the overall Northeastern Atlantic area. Cargo ships from Transinsular Company were used as Observation Platforms of Opportunity, specifically the routes from Continental Portugal (Lisbon and Oporto) to Madeira Island (Caniçal) and vice-versa, to collect data on cetacean occurrence, from July to October, 2012. A total of 113 sightings were recorded, with an encounter rate (ER) of 0.0220 sightings/nautical mile (NM) on 5136 NM on effort. A total of 7 species were identified: Tursiops truncatus, Delphinus delphis, Balaenoptera acutorostrata, Ziphius cavirostris, Physeter catodon, Stenella frontalis and Globicephala macrorhynchus. The most spotted specie was Tursiops truncatus with 21% and an ER of 0.0047 sightings/NM. Dolphins had the highest ER (0.0136 sightings/NM) representing 62% of the sightings, followed by toothed whales with an ER of 0.0039 sightings/NM and 18% of the sightings and baleen whales (Minke whales and 3 sightings of Balaenoptera sp.) with an ER of 0.0035 sightings/NM and 16% of the sightings. There were 5 sightings of non-identified cetaceans. Cetacean monitoring can act as a strong tool and support for conservation plans. Therefore, maintaining these monitoring surveys can improve the knowledge on cetacean presence and distribution in the NE Atlantic Ocean
Effects of subtle pollution at different levels of biological organization on species-rich assemblages
No full textWe investigated effects of subtle nutrient enrichment and metal pollution on different levels of biological organization (i.e. whole assemblage, population and individual) of species-rich assemblages. We used rockpools as model system, applying a multi-factorial sampling design to test hypotheses on differences between disturbed and reference locations. Results indicated that disturbed and reference locations supported similar assemblages, as well as individual fitness-related life-traits were ineffective to discriminate between the two conditions. In contrast, assemblages responded to pollution through a reduction of the abundance of sensitive species and a proliferation of tolerant species, although these alterations were detectable only once the influence of dominant taxa was down-weighed by data transformation. Present findings suggest that, contrarily to individual level variables, assemblage structure after data transformation and patterns of distribution and abundance of differently sensitive taxa would be a powerful tool to detect effects of subtle pollution on species-rich assemblages
Identification of suitable habitats for cetaceans in the Canary Basin, NE Atlantic Ocean: evidences of hot-spots for beaked whales
No full textThe identification of suitable habitat and hotspot areas for cetaceans are increasingly urgent to inform decision makers on spatial management plans and to tackle anthropogenic threats and global changes. Little or no survey effort has been carried out so far in offshore waters of the Canary Basin (NE Atlantic Ocean) where most of protected areas are coastal or islands areas. As a consequence, there is a lack of data on distribution of many sensitive pelagic species. This is particularly the case of beaked whales. In order to fill this gap, 48 sea-surveys along fixed transects between Continental Portugal and Madeira Island were performed in 2012 and 2013, from July to October. We used GAMs to identify the role of environmental variables in shaping cetacean distribution. Then we built an Environmental Envelope model to map and predict species hotspots in the region.Results show the richness of offshore waters: in a total of 10636nm sampled, we recorded 234 sightings accounting for at least 9 cetacean species. GAM results highlight the importance of seamounts for all species, though habitat segregation occurs among groups. We recorded 28 sightings of beaked whales, all within a distance of 40nm from the base of the seamounts. Moreover, beaked whales were always sighted further than 55nm from the coast and 50% of the sightings were between 180nm to 240nm from the coast, with a median depth of about 4300m, proving the importance of sampling offshore waters. Maps produced by the Environmental Envelop model highlight that hotspots for beaked whales were also described by dynamic variables, in particular by the presence of productive mesoscale eddies.Considering ACCOBAMS priorities and EEZ extension for the area, and the urgent need for management plans, we suggest maintaining these sea-surveys to improve habitat modelling and cetacean occurrence prediction
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