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Identificação e avaliação de vazios urbanos na área continental do município de São Vicente (SP): potencialidades e possibilidades de uso
(Universidade Federal de São Carlos, 2005-04-19) Carol, Francisco José; Gonçalves, Adail Ricardo Leister; https://lattes.cnpq.br/3216914214741188; https://lattes.cnpq.br/4165779269571500
This paper promotes an investigation into the Peripheral Urban Emptiness through identification and analysis of the existing cases in São Vicente s Municipality Continental Area, spatial field of study. Its main objective is the establishment of specific guidelines for these urban emptiness, this way contributing to the municipality s urban environmental planning. To this end it was carried out documental research and in loco collection of data which allowed the physical characterization of the spaces studied. This first stage of investigation was complemented and related to the study of the laws incidental to São Vicente s Continental Area, presenting as its first result considerations over the possibilities of use and occupancy for each one of the eleven empty spaces found. The research s final product is composed of suggestions for altering the zoning of use and occupancy of the soil concerned with the area of study specified, with the creation of new zones of use and new proposals for those areas identified as urban emptiness.
Produção de TEP (Transparent Exopolymer Particles) em culturas de três espécies de microalgas isoladas do reservatório de Barra Bonita (Rio Tietê/SP)
(Universidade Federal de São Carlos, 2005-04-19) Bittar, Thais Beraldo; Vieira, Armando Augusto Henriques; https://lattes.cnpq.br/4428377384377272
Transparent exopolymer particles (TEP) have recently been documented to be abundant in ocean waters and in algal cultures. TEP play important roles in the ecology of aquatic ecosystems since they might be a direct source of carbon for higher trophic levels via protists and microzooplankton. They also adsorb dissolved compounds and compose the matrix of marine snow. The extracellular carbohydrates released by phytoplankton are supposed to be the main source of TEP. The aims of the present study were to quantify the TEP produced by biotic and abiotic processes in cultures of the three most important algae species, with regard to phytoplanktonic biomass, of the Barra Bonita Reservoir (Tietê River/SP). The organic carbon content of distinct fractions ( cells , TEP , colloids and dissolved ) of the cultures was also analysed. The biotic production of TEP by the species Anabaena spiroides and Microcystis aeruginosa (Cyanophyceae) was higher than that of Aulacoseira granulate (Bacillariophyceae). TEP biotically produced corresponded to 37 mgC L-1 in the A. spiroides culture, 21 mgC L-1 in the M. aeruginosa culture and 3,0 mgC L-1 in the A. granulate culture, which represent significant quantities of the total organic carbon (72, 31 and 24% respectively) during the growth of cultures. The two biotic processes of TEP production which were observed and documented by photographs in the A. spiroides culture are related to the presence of the wide envelope. The three species release colloidal polysaccharides capable of abiotic transformation into TEP through the abiotic process of bubble scavenging. The biotic production of TEP by these algae species in hypereutrophic freshwater environments was more significant than the abiotic production and the latter must have quantitative importance only in highly polluted waters where the formation of foam may occur. Wherever abundant, these species contribute large quantities of particulate organic matter in the non-living compartment, as TEP.