6 documents found, page 1 of 1
Heat-related mortality in Portugal amplified during the COVID-19 pandemic
Sousa, Pedro M.; Trigo, Ricardo; Russo, Ana; Geirinhas, João L.; Rodrigues, Ana Paula; Silva, Susana Pereira; Torres, Ana RitaAbout 2020 presented the highest mortality burden in recent history in Portugal (11% above the baseline)
Shifts in estuarine macroinvertebrate communities associated with water quality...
Goulding, Thomas; Sousa, Pedro M.; Silva, Gilda; Medeiros, João Paulo; Carvalho, Frederico; Metelo, Inês; Freitas, Catarina; Lopes, Nuno; Chainho, PaulaThe present work aims to identify changes in the macroinvertebrate community of the Tagus estuary (Portugal) due to improvements in water quality and to climate change. Data was collected over a period of 16 years (1998–2014) from different sites located along the estuarine gradient. The AZTI Marine Biotic Index (AMBI) was used to assess the ecological quality status based on benthic invertebrate communities an...
Climate change vulnerability assessment of the main marine commercial fish and ...
Bueno-Pardo, Juan; Nobre, Daniela; Monteiro, J. N.; Sousa, Pedro M.; Costa, Eudriano; Baptista, Vânia; Ovelheiro, Andreia; Vieira, Vasco; Chicharo, LuisThis is the first attempt to apply an expert-based ecological vulnerability assessment of the effects of climate change on the main marine resources of Portugal. The vulnerability, exposure, sensitivity, adaptive capacity, and expected directional effects of 74 species of fish and invertebrates of commercial interest is estimated based on criteria related to their life-history and level of conservation or explo...
The use of circulation weather types to predict upwelling activity along the we...
Ramos, Alexandre M.; Pires, Ana Cordeiro; Sousa, Pedro M.; Trigo, Ricardo M.Coastal upwelling is a phenomenon that occurs in most western oceanic coasts, associated with coastal surface water divergence and consequent ascension of colder and nutrient-rich waters from deeper levels. In this work, we evaluate the intra- and interannual variability of the upwelling index (UI) off the western coast of the Iberian Peninsula considering six locations at various latitudes along the 10°W merid...
Influence of growth temperature and carrier flux on the structure and transport...
Sousa, Pedro M.; Dias, Sonia A.; Conde, Olinda; Silvestre, António Jorge; Branford, William R.; Morris, Benjamin; Yates, Karen; Cohen, Lesley F.In this work we report on the structure and magnetic and electrical transport properties of CrO2 films deposited onto (0001) sapphire by atmospheric pressure (AP)CVD from a CrO3 precursor. Films are grown within a broad range of deposition temperatures, from 320 to 410 degrees C, and oxygen carrier gas flow rates of 50-500 seem, showing that it is viable to grow highly oriented a-axis CrO2 films at temperatures...
CVD of CrO(2): Towards a lower temperature deposition process
Sousa, Pedro M.; Dias, Sonia A.; Silvestre, António Jorge; Conde, Olinda; Morris, Benjamin; Yates, Karen A.; Branford, William R.; Cohen, Lesley F.The deposition of highly oriented a-axis CrO(2) films onto Al(2)O(3)(0001) by atmospheric pressure (AP)CVD at temperatures as low as 330 C is reported. Deposition rates strongly depend on the substrate temperature, whereas for film surface microstructures the dependence is mainly on film thickness. For the experimental conditions used in this work, CrO(2) growth kinetics are dominated by a surface reaction mech...