Recuperação de um subsolo de cerrado com cultivo de plantas nativa e introduzidas

Pós-graduação em Agronomia - FEIS

Dinâmica populacional, forrageamento e exposição de operárias de Ectatomma opaciventre (Hymenoptera : Formicidae) a iscas formicidas contendo sulfluramida, fipronil e clorpirifós

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Morcegos frugívoros no uso do hábitat fragmentado e seu potencial para recuperação de áreas degradadas: subsídios para uma nova ferramenta voltada à conservação

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Epifitismo vascular em três formações vegetais distintas: mata do brejo, floresta estacional semidecidual e cerradão, pertencentes ao município de Bauru, estado de São Paulo

Pós-graduação em Ciências Biológicas (Botânica) - IBB

Influência da atividade das mataloproteinases 2 e 9 na diminuiçao o colágeno tipo I miocárdico em ratos obesos

Pós-graduação em Fisiopatologia em Clínica Médica - FMB

Caracterização morfológica do ramo, sementes e plântulas de matayba guianensis Aubl. e produção de mudas em diferentes recipientes e substratos

Matayba guianensis Aubl . is a shrubby or arborial Sapindaceae quite common in the Brazilian Cerrado with a key role in providing resources for ants and bees. It presents a rapid growth, and is important for the recovery of degraded areas, but little is known about its seedlings production. Therefore, the aim of this study was to describe the morphology of the branch and the seed germination and of seedling Matayba guianensis Aubl . in its post-seminal development and define the type of substrate and container suitable for seedling emergence and seedling production of this species. We evaluated three types of containers: black polyethylene bags, cartridge and polystyrene tray, with 5 kinds of substrates: sand, earth, earth - sand - manure (1:1:1); commercial substrate, and coconut fiber, with 4 replicates of 25 seeds per treatment . The branch, fruit, seed, seedling and their morphological events were described. The branch is cylindrical with paripinnate and alternate leaves, the fruit is dry and dehiscent. The seeds have a large amount of aryl, and the germination is cryptocotylar and hypogeal. The highest percentage of emergence occurred in styrofoam container with 91 % of the seeds germinated in commercial substrate , followed by coconut fiber (88 %). The development of root and stem were higher in tubes and plastic bags , using coconut fiber or commercial substrate.

Riqueza e composição de espécies de formigas no processo de recuperação de uma voçoroca

This study aimed to determine how the richness and composition of ant species behaves with changes in the recovery process of a gully erosion. The study area has 0.9 hectares subdivided into three sections called sector: A, B and C. For the definition of the sectors, erosive and natural restoring were taken as the base level of activity. Four transects were laid systematically throughout the area and surrounding compound with forest and grassland. Each transect had three pitfall trap ten meters apart from each other, with catches of ants were held in rainy and dry seasons. Analysis of variance was applied to compare the number of ant species per plot captured and Scott-Knott test 5% for comparison of means. To verify the similarity of species between environments it was performed an analysis of similarity (ANOSIM) and ordering of environments a Nonmetric Multidimensional Scaling (NMDS). We captured 74 species of ants inside and around the gully erosion. The more degraded environment and initial stage of regeneration, showed greater richness of ant species. The composition of ant species was different between the recovery environments and around. The parameters of ant communities analyzed, richness and composition species were influenced by the regeneration of the area, indicating that ants can be used as bioindicators of gullies recovery.

Teste de tetrazólio para avaliação da qualidade de sementes de Tabebuia roseoalba (Ridl.) Sandwith - bignoniaceae, submetidas ao armazenamento

The species of Tabebuia are propagated sexually, and the use of high-quality seeds is crucial to achieving success in restoration of degraded areas, timber and medicinal production. Thus, the use of rapid tests in programs to control seed quality is an essential tool for the assessment of their physiological quality. The objectives of the present study were to establish the methodology for conducting the tetrazolium test in seeds of T. roseoalba and verify seed viability as a function of storage time, evaluating germination parameters and comparing them with the results of the tetrazolium test. The fruits were manually harvested at the opening, and fresh seeds and seeds stored up to 24 months were evaluated by tetrazolium test, germination, emergence, length and dry weight of seedlings. The tetrazolium at a concentration of 0.05% at 36 ° C for 24 hours is indicated to assess the viability of T. roseoalba, and during storage germination, length and dry weight of the seedlings are reduced and the germination in nursery is sharply reduced with seed storage in 24 months.

Halotolerance, ligninase production and herbicide degradation ability of basidiomycetes strains

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

Potencial de produção de gás metano e dióxido de carbono in vitro dos ingredientes utilizados em dietas para ovinos

This study aimed to evaluate the potential of CH4 and CO2 in vitro production of soybean hulls, sunflower meal, corn, citrus pulp and corn silage. Four rumen-cannulated sheep were fed diets containing the evaluated ingredients at 40:60 forage:concentrate ratio. The gases produced by samples incubation were measured by injection into a gas chromatograph equipped with flame ionization detector. The experimental design was completely randomized with repeated measures, with three replicates for each evaluated food at four different periods. Under the experimental conditions, we verified different potential gas production among the ingredients. The citrus pulp meal was the ingredient with the greatest potential for CO2production. Corn silage and soybean hulls showed the greatest potential while citrus pulp and sunflower meal showed the least potential for CH4 production, when expressed in mL/g of degraded dry matter; therefore, they can be considered, among the evaluated ingredients, those with the lowest environmental impact.

Degradação de membrana impermeabilizante de polietileno de alta densidade usada em tanques de armazenamento de vinhaça

High-density polyethylene (HDPE) water-proof membranes are used as coatings in vinasse (leachate from sugar cane) storage tanks. The leachate is pumped into the tanks at temperatures of 80-90 °C. Due to these high temperatures and acidity of the waste, these membranes can be degraded, cracked and then loose the function for which they have been designed. This may cause contamination of the soil and groundwater. This study evaluated the effect of vinasse in HDPE membranes after 4 months of exposure in a controlled environment. An aggressive, alkaline pH liquid (sodium hydroxide) was also used. The objective was to evaluate the membrane resistance in contact with acidic and alkaline residues. Physical and mechanical tests, measurement of the carbon black content and thermo gravimetric analysis (TGA) were used to determine degradation of polymer membranes after chemical immersion. While sodium hydroxide resulted caused only minor changes in the physical properties, vinasse induced a thickness change of 7.8%. With immersion in vinasse, an average decrease in strength and deformability (yield) of 34% and 23.5% were measured, respectively. The stiffness increased by 7.8% (average) and the tear strength decreased by 2.7% (average).

Efeito da incorporação de macrófitas aquáticas sobre características químicas de solo degradado

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Biossorção do corante DR 23 por Saccharomyces cerevisiae imobilizada em serragem de peroba (Aspidosperma polyneuron) tratada com PEI (polietilenoimina)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Diagnóstico visando planejamento ambiental da alta Bacia do Ribeirão Areia Dourada, Marabá Paulista (SP)

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

Avaliação do efeito da inoculação de fungos termofílicos em pilhas de compostagem de lixo urbano

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)