5 research outputs found
GESTÃO DO ÓLEO LUBRIFICANTE USADO EM POSTOS DE COMBUSTÍVEIS NO MUNICÍPIO DE TEREZÓPOLIS DE GOIÁS – GO, BRASIL
http://dx.doi.org/10.5902/2236130815193The gas stations usually develop several activities that generate waste, and require special care in their final destination, as an example we have used lubricating oil and their packaging materials that are classified as hazardous according to Brazilian standard and must be obeyed to the demands made by specific resolutions regarding the collection, treatment and final disposal. This research aimed to evaluate the management of disposal of lubricating oil and its packaging in gas stations in the municipality of Terezópolis of Goiás - GO. Structured questionnaires for interviews with those responsible for managing these wastes and it was found that only two of the five active stations in the municipality performed the oil change were used. Two stations analyzed the lubricating oil is collected by contractor where recycling is conducted, but the packaging of the oil are intended for controlled municipality landfill, being treated as common waste. We notice that the stations do not comply with the legislation in its entirety, requiring inspections and discussion about the importance of proper waste treatment.http://dx.doi.org/10.5902/2236130815193 Os postos de combustíveis em geral desenvolvem atividades que geram diversos resíduos, e que necessitam de cuidados especiais em seu destino final. Como exemplos temos o óleo lubrificante usado e suas embalagens que são classificadas segundo norma brasileira como perigosos, devendo ser obedecidas às exigências feitas por resoluções específicas quanto à coleta, tratamento e disposição final. Essa pesquisa objetivou avaliar a gestão do descarte do óleo lubrificante e sua embalagem em postos de combustíveis do município de Terezópolis de Goiás – GO. Foram utilizados questionários estruturados para entrevistas com os responsáveis pelo gerenciamento desses resíduos e foi constatado que apenas 2 postos dos 5 ativos no município realizavam a troca de óleo. Em dois postos analisados o óleo lubrificante usado é coletado por empresa contratada, onde é realizada a reciclagem, porém as embalagens do óleo são destinadas ao aterro controlado do município, sendo tratado como resíduo comum. Nota-se que os postos não cumprem em sua totalidade a legislação, necessitando de fiscalizações e de discussões sobre a importância do tratamento adequado desses resíduos
The role of environment, space and use of soil on the structure of the functional and taxonomic composition of phytoplankton communities and zooplankton in tropical reservoirs
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Previous issue date: 2016-02-26Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqOne of the main focuses of ecology and biogeography has been better understanding as
historical factors, environmental factors and dispersal ability influence the pattern of species
distribution. Besides the environmental conditions and space being considered important
components to control the variation in communities, another factor that can influence the beta
diversity, but has been little studied, is the land use type. We aimed determine the relative
influence of local, spatial components (directional and non-directional) and land use in the
taxonomic and functional composition of phytoplankton and zooplankton communities in tropical
reservoirs. Data was collected in 25 sampling points in reservoirs in the Rio Preto Basin, which is
located in the Federal District-DF, Brazil. We performed a partial redundancy analysis to
determine the influence of each component. The space was the only component with significant
influence over the two groups (phytoplankton and zooplankton) and both approaches. Local
variables had no significant influence on the variation of the communities, as well as the land use.
Given the importance of space in the analyzed communities, we applied a protocol based on an spatial autocorrelation analysis, which indicated that the spatial pattern of the communities could
be purely associated with dispersal by neutral factors. Our results demonstrated that the spatial
component can be significant even in small scale studies to organisms with passive dispersal.
Furthermore, it is important consider the connectivity among the environments in investigations
with these microorganisms. as well as the use of the functional approach for studies of planktonic
distribution, because of it show patterns similar to those found in the taxonomic approach.Um dos principais focos da ecologia e biogeografia tem sido conhecer melhor como fatores históricos, ambientais e a capacidade de dispersão das espécies influenciam no padrão da distribuição das mesmas. Além das condições ambientais e do espaço serem considerados
importantes componentes ao controlar a variação nas comunidades, outro fator que também pode
influenciar a diversidade beta em ambientes aquáticos é o tipo de uso de solo. O objetivo do
presente trabalho é determinar a influência relativa dos componentes locais, espaciais (direcional e
não-direcional) e de uso de solo na composição taxonômica e funcional das comunidades
fitoplanctônicas e zooplanctônicas em reservatórios tropicais. Os dados foram coletados em 25
pontos amostrais em reservatórios na Bacia do Rio Preto, que está localizada no Distrito Federal-
DF, Brasil. Para determinar a influência relativa dos componentes realizamos uma análise de
redundância parcial. O espaço foi o único componente com influência significativa sobre os dois
grupos (fitoplanctônico e zooplanctônico) em ambas abordagens. As variáveis locais não
apresentaram influência significativa sobre a variação das comunidades, assim como o tipo de uso
de solo. Devido ao importante papel apresentado pelo espaço nas comunidades analisadas, foi
aplicado um protocolo baseado em uma análise de autocorrelação espacial, na qual demonstrou que
o padrão espacial das comunidades poderia ser associado puramente a fatores neutros de dispersão.
Nossos resultados demonstraram que o componente espacial pode ser significativo mesmo em
estudos de pequenas escalas para organismos com dispersão passiva. Além disso, é importante
considerar a conectividade dentre os ambientes em investigações com esses microrganismos, bem
como a utilização da abordagem funcional para estudos sobre a distribuição planctônica, pelo fato
da mesma demonstrar padrões semelhantes aos encontrados na abordagem taxonômica
Soil chemistry turned upside down: a meta-analysis of invasive earthworm effects on soil chemical properties
12 páginas. 4 figuras.- 2 tablas.- 70 referencias.- Additional supporting information may be found in the online version of this article at http://onlinelibrary.wiley.com/doi/ 10.1002/ecy.2936/suppinfo .- Data are available from the Dryad Digital Repository: https://doi.org/10.5061/dryad.59zw3r23dRecent studies have shown that invasive earthworms can dramatically reduce native biodiversity, both above and below the ground. However, we still lack a synthetic understanding of the underlying mechanisms behind these changes, such as whether earthworm effects on soil chemical properties drive such relationships. Here, we investigated the effects of invasive earthworms on soil chemical properties (pH, water content, and the stocks and fluxes of carbon, nitrogen, and phosphorus) by conducting a meta‐analysis. Invasive earthworms generally increased soil pH, indicating that the removal of organic layers and the upward transport of more base‐rich mineral soil caused a shift in soil pH. Moreover, earthworms significantly decreased soil water content, suggesting that the burrowing activities of earthworms may have increased water infiltration of and/or increased evapotranspiration from soil. Notably, invasive earthworms had opposing effects on organic and mineral soil for carbon and nitrogen stocks, with decreases in organic, and increases in mineral soil. Nitrogen fluxes were higher in mineral soil, whereas fluxes in organic soil were not significantly affected by the presence of invasive earthworms, indicating that earthworms mobilize and redistribute nutrients among soil layers and increase overall nitrogen loss from the soil. Invasive earthworm effects on element stocks increased with ecological group richness only in organic soil. Earthworms further decreased ammonium stocks with negligible effects on nitrate stocks in organic soil, whereas they increased nitrate stocks but not ammonium stocks in mineral soil. Notably, all of these results were consistent across forest and grassland ecosystems underlining the generality of our findings. However, we found some significant differences between studies that were conducted in the field (observational and experimental settings) and in the lab, such as that the effects on soil pH decreased from field to lab settings, calling for a careful interpretation of lab findings. Our meta‐analysis provides strong empirical evidence that earthworm invasion may lead to substantial changes in soil chemical properties and element cycling in soil. Furthermore, our results can help explain the dramatic effects of invasive earthworms on native biodiversity, for example, shifts towards the dominance of grass species over herbaceous ones, as shown by recent meta‐analyses.This project received support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement 677232). Further support came from the German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, funded by the German Research Foundation (FZT 118).Peer reviewe
The Trends to Multi-Authorship and International Collaborative in Ecology Papers
2 pages, 2 figuresOur work on Scientometrics and Ecology has been continuously supported by different grants FAPEG, CNPp and CAPES.Peer Reviewe