DCA - Comunicações a Conferências / ConferenceItem
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Todo o tipo de documentos relacionados com uma conferência; ex.: artigos de conferências, relatórios de conferências, palestras em conferências, artigos publicados em proceedings de conferências, relatórios de abstracts de artigos de conferência e posters de conferências.
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- An approach to evaluate aerosol optical depth at marine boundary layer : the Pico-Graciosa measurement platformPublication . Henriques, Diamantino; Carvalho, Fernanda; Fialho, PauloAerosols are an important constituent of the atmospheric boundary layer. Aerosol particles provide surfaces for heterogeneous chemical processes, they also act as a condensation sink for atmospheric trace species. In the marineatmosphere originate from a variety of production and transformation processes that includes sea spray aerosol produced at the sea surface through the interactions between wind and surface waves (Liss and Johnson, 2013).
- Some Aerosol Optical Measurements at Pico Mountain ObservatoryPublication . Fialho, Paulo; Mazzoleni, Claudio
- Hijacking, hitchhiking and burglary behaviors of pelagic octopusesPublication . Rosa, Rui; Kelly, Jesse T.; Norman, Mark; Lopes, Vanessa M.; Paula, José R.; Gonçalves, João M.; Barreiros, João P.Pelagic octopuses are a highly specialized group of octopuses that have secondarily left the seafloor and evolved a holopelagic existence. One of the most striking adaptations amongst a suite of related pelagic octopus families (superfamily Argonautoidea) is their associations with gelatinous zooplankton (jellyfishes and salps). Here, we report footage of a never-before-seen interaction in nature (here coined as “hijacking” behavior), between a male octopus (Haliphron atlanticus) and a venomous jelly (Pelagia noctiluca) at the surface ocean. The peculiar orientation of this encounter and size of the intruder opposes the pelagic “hitchhiking” and the “burglary/weapon stealing” strategies observed to date in these pelagic octopuses. The “hijacking” behavior is a more complex interaction. While maneuvering the jelly (and possibly ingesting it), H. atlanticus appears to be using the jelly’s marginal nematocystic tentacles to hunt. This constitutes the first evidence that all four octopod families of the Argonautoidea display opportunistic associations with gelatinous zooplankton, and establishes a new category of biotic associations.
- Biotic and Abiotic factors in the distribution of resident fish species : a case study from two islets and an adjacent shoreline in Terceira Island, Azores, PortugalPublication . Medeiros, João; Santos, Cristina Sousa; Ponte, Dário Dinis Sousa; Barreiros, João P.With this poster we aim to disclose the ecological characteristics of the resident ichthyofauna in three distinct SE- NW aligned sites off the S coast of Terceira Island, Azores, Portugal. We collected both direct and indirect data about those species near the shoreline – Serretinha, in a close by islet complex – Cabras and over an offshore rocky outcrop – Fradinhos. [...].
- The fan mussel Pinna rudis : occurrence and association with Pontonia pinnophylax in Terceira Island (Azores, NE Atlantic).Publication . Pacheco, Ricardo J.; Barreiros, João P.; Gonçalves, Sílvia C.Pinna rudis is known as one of the biggest fan mussels in the Azores, reaching a length of up to 80cm. The specimens are generally found attached by numerous byssus threads, with their pointed anterior ends buried vertically in the substratum (mud, sandy mud or gravel). However, currently there is a notorious lack of basic knowledge about this species, with no specific studies available in the literature. The objective of the present work was to study the occurrence of Pinna rudis in the coast of Terceira Island, by analysing the spatial distribution of the individuals, and investigate the symbiotic association with the shrimp Pontonia pinnophylax. Along the south coast of Terceira Island, 23 dives in 13 sites were performed using 30 meters transects. The dives were made from August to October 2004, limited by meteorological conditions. The length of each pinnid was measured in situ, and above the sediment, to avoid unnecessary removal. During the study period, 28 P. rudis were observed with a length range from 10 to 30cm. The majority measured about 10 to 15cm. The occurrence of P. rudis was not the same at the different sites selected, occurring mainly in small patches of sand in rocky bottoms. Only solitary individuals were observed. No correlation between the length of the animals and the depth of their occurrence was detected. The shrimp Pontonia pinnophylax was found living within the largest bivalves and at deeper depths. The occupancy rate of Pinna rudis by Pontonia pinnophylax was 57% (containing one or two shrimps). It is believed that the life cycles of these two species may be linked. The exact relationship between these two species remains unclear and needs to be studied experimentally; however it is believed that this is a mutualistic association.
- A changing climate: prospects for the Azorean bryophytesPublication . Henriques, Débora; Gabriel, Rosalina; Coelho, Márcia Catarina Mendes; Borges, Paulo A. V.As climate change is warming our planet, biodiversity is responding to that input through several different processes, such as range or phenology shifts (Bellard et al., 2012). The main problem with species’ responses is that many seem to be unable to keep up with the fast pace of climate change. Quintero & Wiens (2013) established that projected rates of climate change until 2099 are about 10.000 times superior to the historical climatic niche evolution rates of 540 species of terrestrial vertebrates. If species’ fail to adapt, local extinctions can occur. This is especially true for islands, due to isolation and dispersal barriers. Plants, for example, can only migrate upwards until they reach the mountain summits. From there, they have no place to go, no area to colonize.
- Bryophytes distribution along an altitudinal gradient of native forest in Pico island (Azores): preliminary results of epiphytic generaPublication . Coelho, Márcia Catarina Mendes; Gabriel, Rosalina; Henriques, Débora; Ah-Peng, ClaudineThe evergreen forests of the Azores offer a great variety of habitats for bryophytes, owing to the diversity of microhabitats and available substrata, and to the hyper-humid conditions they provide. Bryophytes play a vital role in such ecosystems (Homem & Gabriel, 2009). The understanding of species rarity is important in ecological and conservational research.
- A comparison of bryophyte diversity in the Macaronesian Islands: island versus habitat approachPublication . González-Mancebo, Juana M.; Gabriel, Rosalina; Otto, Rüdiger; Sim-Sim, Manuela; Luís, Leena Margarida; Sérgio, Cecília; Garzón-Machado, Víctor; Aranda, Silvia C.; Capelo, Jorge; Vanderpoorten, AlainIn this paper, we present a comparison of richness patterns and floristic similarity for bryophytes in the five most important altitudinal habitat types in the Macaronesian islands. We evaluate the importance of different factors discussed in the literature in predicting species diversity applying the traditional island approach and within the framework of the new habitat approach, including area, isolation, climatic factors, geological age and human influence. From the analysis of patterns of bryophyte species distribution for selected habitats across islands and archipelagos, we specifically test the hypothesis that (i) floristic similarity is primarily determined by climatic factors, but not by geographical distance due to high dispersal ability in this species group and (ii) bryophyte richness is best predicted by area, but not by geological age of the habitat due to very low endemicity or speciation rate and high colonization rate.
- Perspectives and progress of ecology and conservation science in the Azores: the possible contribution of Artificial IntelligencePublication . Borges, Paulo A. V.; Cardoso, Pedro; Guerreiro, Orlando; Rigal, François; Florencio, Margarita; Amorim, Isabel R.; Borda-de-Água, Luís; Cascalho, José Manuel; Ferreira, MiguelThere is an urgent need of new methodologies in ecological and conservation science to deal with increasingly complex problems. We introduce four emerging research areas in ecology in which Artificial Intelligence may be explored as a tool to tackle unsolved issues in island ecosystems: (1) modeling abundance of plant and animal species in space and time; (2) modeling spread of invasive species; (3) estimating species richness based on incomplete sampling and (4) modeling speciation and diversification in insular habitats.
- Investigando o passado para planear o futuro: uma análise bibliométrica das publicações dos Açores em revistas do SCI entre 1974-2012Publication . Borges, Paulo A. V.; Gabriel, Rosalina; Arroz, Ana Margarida Moura; Machado, Artur da Câmara; Madruga, João; Santos, Ricardo S.; Silva, Francisco; Simões, NelsonA sociedade de conhecimento solicita a todas as regiões, a participação na construção de um futuro mais sustentável, na linha da estratégia Europeia para o Horizonte 2020. Que contributos tem dado a investigação produzida nos Açores com vista à "Inovação para a Especialização Inteligente"? Neste estudo apresentamos uma análise bibliométrica referente às publicações de autores residentes nos Açores disponíveis na Science Citation Index (SCI), entre 1974-2012, explorando vários indicadores: "média de autores por estudo" e "factor de impacto" ao longo do tempo e por disciplina, "rede de colaborações" com o continente português e outros países, "áreas de investigação", "palavras chave" e "categorias do Web of Science" além do "número total de citaç.es" e do "número de páginas". A produção científica nos Açores tem vindo a crescer, destacando-se os últimos seis anos (154%), seguindo uma tendência análoga à de Portugal continental. Os principais temas de publicação situam-se no âmbito das Ciências Naturais. Verifica-se que o factor de impacto das publicações cresceu, passando de 2.0 em 1999 para 2.6 em 2012. A relevância internacional das publicações também tem vindo a aumentar, sendo que em 2002 se registou o valor mais baixo, 1.78 vezes em média, enquanto que em 2009 uma publicação foi citada, em média, 3,52 vezes. Três quartos das publicações possuem pelo menos um co-autor de outra regi.o, sendo as colaborações mais importantes com instituições nacionais (22%), mas também com o Reino Unido (13%), Espanha (11%) e USA (9%). Cerca de metade 60 das 100 publicações mais citadas foram publicadas entre 2006 e 2010.