246 resultados para Qualidade Ambiental


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Pós-graduação em Ciências Biológicas (Zoologia) - IBB

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Este trabalho discute o uso da análise de frequência de moscas das famílias Calliphoridae e Muscidae na avaliação do impacto da implantação de programas de coleta seletiva de lixo urbano. Para isto, utilizou-se do estudo de caso de Tupã, município paulista, em duas fases distintas: fase 1 - compreendida entre os meses de junho e outubro de 2001, período caracterizado pela presença do lixão e; fase 2 - entre os meses de novembro de 2001 a maio de 2002, caracterizada pelo início da implantação do processo de coleta seletiva e reciclagem e aterramento gradativo do lixão. Procedeu-se a captura dos insetos com dez armadilhas confeccionadas com garrafas plásticas, de dois litros, do tipo PET, alocadas em residências e árvores ao redor do lixão. Como atrativo utilizou-se aproximadamente 400 ml de vinhaça de cana de açúcar, substituída semanalmente no ato da colheita. Nas duas fases da pesquisa, observou-se que a família mais frequente e constante foi a Calliphoridae.  Houve correlação positiva, antes da coleta seletiva, entre o número de califorídeos e a precipitação pluviométrica (0,638) e, entre o número de muscídeos e a temperatura média (0,605). Após a coleta, o mesmo não foi observado. O programa de coleta seletiva implantado nesse município paulista resultou em diminuição significativa na frequência de dípteros e a análise da flutuação de califorídeos e muscídeos demonstrou-se como um eficiente indicador de monitoramento da qualidade ambiental.

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AIM: In this paper we estimate the sediment yield and other related information for a small urbanized watershed, located in Sorocaba, São Paulo State. The driving forces that produce the observed scenario are presented and discussed; METHODS: Over a year, water samples and hydrologic information concerning the river channel were collected monthly at one sampling site. In the laboratory, water samples were oven dried (80 ºC) and the total suspended solid weighed for each sample. To estimate sediment yield we used Colby's simplified method. The sediment delivery ratio (SDR) was estimated using two methods: the relief - length ratio and the bifurcation ratio; RESULTS: The annual sediment yield estimated for the period was 1,636.1 t. The total specific sediment yield was 541.7 t.km -2.y-1. Bedload was the predominant fraction. The SDR changed between 60 and 66% according to the method employed. CONCLUSIONS: The main driving forces of hydrosedimentological disequilibrium are the lack of riparian vegetation, the dumping of construction wastes at inadequate sites, and the launching of untreated sewage. Hence, if these three factors were controlled, a significant improvement in the environmental quality, particularly water quality, might be achieved.

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It is known that the urban environment modifies the energy balance between the surface and the atmosphere, causing changes in temperature, relative humidity, among other things, opening the way for studies aimed at urban climatology. Based on the theme of urban climate, this research focuses on the city of Assis, located west of São Paulo. The generation of urban climate is a result of various factors, among which stand out: the use and different land use, the thermodynamic properties of buildings, number of buildings in the urban, socioeconomic activities, etc.. In general, this increases the temperature and reducing relative humidity, providing thermal discomfort. The rural environment is used for comparison studies to this theme by presenting different characteristics in relation to the structure, morphology and urban functionality. The main objective of this study is to determine the characteristics of temperature and humidity environments with the habits and occupations of the different soils in winter, at night, one inserted into the urban fabric of Assis and the other in the rural environment, to verify for evidence of changes in climatic elements because of urbanization. To collect the data will be used mini automatic weather stations that record data on temperature and humidity. For analysis of the results will be made between the data obtained in the city and the countryside, developing graphics application using Excel to tabulate the data. It was found that there were differences in the thermo-hygrometric data collection points, showing a specific urban climate in the city of Assis

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Petroleum and its subproducts are considered a treat for the environmental quality because of the many environmental accidents that may occur during exploitation, transport and storage. A common remediation technique used in the contaminated areas is based on the use of surfactants, mainly the chemical ones, because they have low production costs. In the other hand, some microorganisms have indicate capacities of producing surfactants that emulsify substances and as result, offer a bigger contact surface for the microbiota degradation. This biossurfactants stand out in comparison with the chemical surfactants because they present lower micelar concentration values, are more tolerant for temperature and pH variation, because they are biodegradable, have low toxicity, higher emulsification and hydrocarbon solubilization index. In this way, after the surfactant application, a toxicity evaluation have to be made to identify the treatment effects. In soil, the activity of some microbial enzymes can show the environmental behavior of the contaminant under different treatment conditions. Dehydrogenase is one example of those enzymes that can demonstrate indirectly the effect of the pollutant on the soil microorganisms. The aim of this paper was to evaluate the toxicity after the addition of a surfactant and/or Pseudomonas aeruginosa LBI in soil contaminated by a mineral automotive lubricant. The previous mentioned bacteria are a potential biossurfactant (rhamnolipid) producer. In order to evaluate the toxicity, the dehydrogenase test was run. In this test, trifeniltetrazolium compound (TTC) after utilized as an electron acceptor, turns into trifenil formazan (TPF), that can be indirectly quantified using the absorbance measured by the spectrophotometer UV-visible. In this way, it was possible to quantify the dehydrogenase activity from the contaminated soil samples... (Complete abstract click electronic access below)

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A Fundação para a Conservação e a Produção Florestal do Estado de São Paulo – Fundação Florestal, órgão vinculado a secretaria do Meio Ambiente, tem por objetivo contribuir para a conservação, manejo e ampliação das florestas de proteção e produção do Estado de São Paulo. A regional de Botucatu atua na gestão de Unidades de Conservação (UC), sendo elas a APA (Área de Proteção Ambiental) Corumbataí – Botucatu - Tejupá, a APA Ibitinga e a APA Rio Batalha. APA é uma UC de uso sustentável destinada a proteger e conservar a qualidade ambiental e os sistemas naturais ali existentes. Além disso, atua também na criação de Unidades de Conservação, em especial as RPPNs (Reservas Particulares do Patrimônio Natural), que é uma categoria de UC privada, com o objetivo de conservar a diversidade biológica. O presente trabalho teve como objetivo descrever as atividades realizadas durante o período de estágio, em especial aquelas voltadas ao Programa RPPN Paulistas da Fundação Florestal. Sabendo que a RPPN representa uma importante participação da sociedade na conservação da biodiversidade e da grande dificuldade encontrada pelos proprietários na gestão de sua reserva, com o objetivo de ampliar as estratégias do Programa RPPN Paulistas, foi desenvolvido uma entrevista com os proprietários mediante um questionário, estruturado em 5 partes, sendo elas: quanto à criação da RPPN, quanto à gestão da RPPN (Plano de Proteção e Plano de Manejo), quanto às atividades desenvolvidas na reserva, quanto ao grau de satisfação, e comentários finais, críticas e sugestões. Das 62 RPPNs reconhecidas no Estado de São Paulo, 21 proprietários participaram da pesquisa. Foi identificada a importância de parcerias entre proprietários de RPPN e as universidades. A existência de pesquisas científicas é bastante positiva, tanto para a RPPN, visto que ...(Resumo completo, clicar acesso eletrônico abaixo)

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Dormitories are places offered by Brazilian public Universities to undergraduate students evaluated as socio-economically less favored aiming to guarantee the housing of the student in the locality they take a given undergraduate course, once housing is one the points which compose the tripod that supports the concept of student permanence, along with conditions of transportations and food. These places, however, present problems in their management, specially the ones related to social and environmental questions, caused by wrong attitudes and pre-concepts of their own residents, other students and the communities who live around them. So, this project aims to identify and analyze the socio-environmental conditions of a students’ dormitory located in Botucatu/SP which is supported by the Universidade Estadual Paulista “Júlio de Mesquita Filho” (Unesp) as well as the community that surrounds it. The data collecting is based on an exploratory research characterized for interviews that used semi-structured questionnaires and for the creation of a photography record of the region. The obtained data corroborated the tendency of an increasing gap between the Brazilian public universities and the society as well as to the disengagement of them and their students. This diagnosis has permitted to build proposals of educational interventions based on Permaculture, Agroecology and Critical Environmental Education to the improvement of the existing relationships among the students who live at the dormitory and among them and the local community. These interventions may be used as subsidies to the development of future research and extension projects to the local community

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Interessada em atividades com foco conservacionista, a Ong SOS Cuesta Botucatu foi selecionada pelo programa Petrobrás Ambiental para desenvolver o Projeto Córrego da Cascata no município de Botucatu. Este projeto é uma proposta de mobilização e educação ambiental para envolver a sociedade, principalmente a população ribeirinha, na gestão e no planejamento estratégico de recuperação e conservação ambiental da Microbacia Hidrográfica do Córrego da Cascata. O foco do projeto é promover a reversão dos processos de degradação e planejar ações estratégicas integradas e participativas de manejo e de gestão para a preservação da qualidade ambiental desse córrego urbano, por meio de uma caracterização socioambiental da referida Microbacia. Em relação à caracterização ambiental, o presente estudo refere-se ao levantamento da mastofauna em fragmentos de Mata Atlântica situados na área da Microbacia. O levantamento dos mamíferos terrestres de médio e grande porte foi realizado no período de abril de 2011 a fevereiro de 2012, com a utilização de dois métodos: parcelas de areia e câmeras trap. Outros dois métodos complementares também foram utilizados na tentativa de conseguir resultados que, invariavelmente, não seriam obtidos com as metodologias acima, como entrevistas e registro de atropelamentos. O objetivo é avaliar a riqueza da mastofauna da região comparando com trabalhos anteriores feitos em fragmentos com características semelhantes aos inseridos na Microbacia do Córrego da Cascata, Botucatu, São Paulo. Foram registradas 14 espécies de mamíferos pertencentes a sete Ordens distintas, sendo duas espécies consideradas ameaçadas. Houve predominância de registros de animais generalistas/oportunistas em áreas com menor diversidade de mastofauna

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Since the beginning of it’s existence the humankind coexists with the production of waste, both organics and inorganics. Over the years the world population is raising, and consequently the different kinds of waste, causing significant problems not only for the public authorities, but also for the population, not only those related with its final or temporary destination but also with its crescent production. Considering it, the cities are not able to handle there volumes, and its landfills and dumps are working over their capacities, leading to a serie of environmental problems due to the lost of environmental quality and the natural and social vulnerabilities arising. This paper plans to working over visits, photographic registration and a review on the theme literature, study the perception and valuation of the landscape on the Ribeirão Preto landfill, São Paulo state (SP), that today is disabled but still an area of risk and environmental vulnerability, well as the perception of environmental quality in the surrounding population

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The lack of proper planning in intervention works of runoff water on rural properties and rural public roads leads to economic damage and loss of environmental quality. The impact of the action without technical base is soil erosion, siltation of water sources, loss of the quality and availability of water, invalidating areas for cultivation and livestock. The conservation of headwaters requires beyond regeneration of the environmental characteristics the repair and management of the degraded watercourse in order to control erosion. This graduate work in Environmental Engineering from Universidade Estadual Paulista Julio de Mesquita Filho - UNESP Presidente Prudente proposes a headwater recuperation and management in rural area of Álvares Machado municipality, São Paulo State, through the method of deep drainage applied to the case of a rural road near the outcrop of water. This technique consists in the installation of draining structures in sub-areas of the road surface, or sub-gutter and/or in the platform border in order to conduct the underground flow of water and reduce the loss of sediment in water flow. Therefore, was performed a historic study of use and occupation of land in the municipality of Álvares Machado, portraying transformations of the landscape caused by human action. Geology, geomorphology, pedology and hydrogeology data were collected from the study area in order to establish the conditions that led into the current situation of degradation and formulate an effective intervention strategy for civil works

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In most brazilian cities, urban growth has occurred without adequate planning. Consequently, portions of the city were being occupied, often areas unfit for use and occupation of land, causing risks to local residents and decline of urban environmental quality. One of the most frequent problems is the riverbank occupation, causing the deforestation of the riparian vegetation. Given the above, this paper aimed to map the urban sprawl of Rio Claro/SP, as well as riparian vegetation in the vicinity of Corumbataí in the area including the urban area. For this purpose, GIS techniques were used in order to prepare the thematic map of urban expansion, as well as a map of the riparian vegetation through interpretation of aerial photographs in the environment of ARCGIS. From the maps, an analysis of “Plano Diretor” was made in order to verify if the current occupation of urban land meets the stipulations of this legal instrument

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The intense urbanization in coastal environments can cause environmental changes due to the susceptibility of these areas. It is therefore of utmost importance to understand the environmental quality of coastal area and the geomorphological features are essential to make it possible, as well as the geomorphological maps that are used as an instrument to analyze the relief. However, there is no standardization among the geomorphological mapping techniques, since the proposals vary according to the taxonomy of the relief, the adopted scale and the objective of the researcher. This paper aims to carry out geomorphological mappings of sectors of the city of Mongaguá, in São Paulo state, according to the conceptions of Verstappen and Zuidam (1975) and Gustavsson, Kolstrup and Seijmonsbergen (2006), seeking to verify the possibilities and constraints that each one can provide for environmental management. Verstappen and Zuidam’s design (1975) is a classical international bibliography proposal indicating the symbols and colors that will be used to represent the relief according to the origin shape of the geomorphological features; Gustavsson, Kolstrup and Seijmonsbergen's conception (2006) is a latest international proposal which also uses symbols and colors that can be combined to represent various forms of relief, coming from different origins. The mappings in this research are although not presented as a mainstream map, but as a cartographic representation in which the symbols are superimposed on the digital ortophoto map to provide the reader an association between symbolism and the relief represented. The result is a comparative analysis among the symbols that were used in each mapping, in which is discussed what design is the most appropriate, considering the adopted scale and the geomorphological features of the mapped area

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The city of São Paulo has, since the beginning of the expansion of its urban sprawl, represented relations of conflicts and contradictions between society and nature. Once the way society relates to nature is defined by how the social agents themselves correlate in certain social and historical contexts, the ways of interaction between the social and natural elements will be different according to the forms of production and appropriation of the urban space. Even more evident is the case of the great national metropolis, given its demographic dimensions and historical conditions, the process of urban expansion follows a logic where spaces of better quality for housing are occupied by those of better financial conditions. Thus, although there are exceptions, the poorest people live in places less desirable, in less resilient environments of lower environmental quality, relating to nature and its phenomena with greater risks. These risks are reflected here as recurring flooding, mudslides and landslides for which the rain is constantly blamed. So we have a situation where it is clear that a weather phenomenon differently interacts with different social groups. In this context, the study was conducted to compare extreme events occurred in two regions of São Paulo: the Freguesia do O, in the north side, and M'Boi Mirim, in the south side. Both are regions with large number of risk areas and are in the same urban climate unit. However, they present different conditions of social vulnerability. With the investigation of each extreme rain event occurred in the two regions, in the period of 2000-2010, supplemented by field research, we tried to observe how far the rain, with his intensity and volume, can, in fact, be related to the accidents.