Produção de beta-glucanases por Trichoderma harzianum Rifai para obtenção gluco-oligossacarídeos a partir de botriosferana

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Manual intermitente: notas sobre a poética ficcional de José Saramago

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da ocorrência de cianobactérias no reservatório de Nova Avanhandava-SP por meio da inferência do pigmento ficocianina

Pós-graduação em Ciências Cartográficas - FCT

Estudo taxonômico e anatômico em espécies de Canoparmelia s.l. (Parmeliaceae, Ascomycota liquenizados)

Pós-graduação em Ciências Biológicas (Botânica) - IBB

Ocorrência de algas cianofíticas em água de dessedentação de bovinos criados extensivamente

In extensive animal husbandry, natural or artificial ponds allow direct access of cattle to water but result in degradation of water quality and in increased health risks. Under such circumstances eutrophication occurs and consequently algal bloom, among them toxigenic cyanobacteria. The present study aimed to report the occurrence of cyanobacteria in the drinking water of cattle and to describe their physical and chemical parameters, as pH, temperature and dissolved oxygen. Nineteen samples of natural ponds or water troughs formed predominantly as result of rainfall from six farms located in the Southeast and Midwest regions of Brazil were analyzed for the presence of cyanobacteria, and pH, temperature and dissolved oxygen was measured. Microcystis and/or Merismopedia were detected in two ponds; one of them was covered with intense flowering. The values of pH, temperature and dissolved oxygen in 19 collections were pH 7.2-9.7, 31-34ºC and 7.8-30mg/l respectively. Also non-pathogenic algae of several genera were detected besides the occurrence or not of cianogenics. Under these conditions, the common practices of drinking water supply for extensively raised cattle and the possibilities of eutrophication and cyanobacterial growth bring potential risks for animal health.

Effects of some parameters in upscale culture of Haematococcus pluvialis Flotow

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Cyanobacteria detection in Guarapiranga Reservoir (São Paulo State, Brazil) using Landsat TM and ETM+ images

Algae bloom is one of the major consequences of the eutrophication of aquatic systems, including algae capable of producing toxic substances. Among these are several species of cyanobacteria, also known as blue-green algae, that have the capacity to adapt themselves to changes in the water column. Thus, the horizontal distribution of cyanobacteria harmful algae blooms (CHABs) is essential, not only to the environment, but also for public health. The use of remote sensing techniques for mapping CHABs has been explored by means of bio-optical modeling of phycocyanin (PC), a unique inland waters cyanobacteria pigment. However, due to the small number of sensors with a spectral band of the PC absorption feature, it is difficult to develop semi-analytical models. This study evaluated the use of an empirical model to identify CHABs using TM and ETM+ sensors aboard Landsat 5 and 7 satellites. Five images were acquired for applying the model. Besides the images, data was also collected in the Guarapiranga Reservoir, in São Paulo Metropolitan Region, regarding the cyanobacteria cell count (cells/mL), which was used as an indicator of CHABs biomass. When model values were analyzed excluding calibration factors for temperate lakes, they showed a medium correlation (R²=0.81, p=0.036), while when the factors were included the model showed a high correlation (R²=0.96, p=0.003) to the cyanobacteria cell count. The empirical model analyzed proved useful as an important tool for policy makers, since it provided information regarding the horizontal distribution of CHABs which could not be acquired from traditional monitoring techniques.

Variance partitioning of deconstructed periphyton communities: does the use of biological traits matter?

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cyanobacteria, microcystins and cylindrospermopsin in public drinking supply reservoirs of Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

The influence of landscape on the spatial and temporal distribution of stream macroalgal communities of two types of subtropical biomes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

The roles of environmental conditions and spatial factors in controlling stream macroalgal communities

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

A angústia de Prometeu: a Crítica Literária e os conflitos de Harold Bloom

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito do extrato aquoso de folhas de guanandi (Calophyllum brasiliense Cambess) no controle do crescimento de Microcystis aeruginosa

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Impact of the Textile Dye Acid Blue 40 on the Periphyton of a Simulated Microecosystem

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

The effects of habitat complexity and hydraulic conditions on the establishment of benthic stream macroalgae

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)