Efeitos da tilápia do Nilo (Oreochromis niloticus) e do enriquecimento por nutrientes sobre a comunidade planctônica em um lago artificial no semi-árido brasileiro

The major aim of this study was to test the hypothesis that the introduction of the Nile tilapia (Oreochromis niloticus) and the enrichment with nutrients (N and P) interact synergistically to change the structure of plankton communities, increase phytoplankton biomass and decrease water transparency of a semi-arid tropical reservoir. One field experiment was performed during five weeks in twenty enclosures (8m3) to where four treatments were randomly allocated: with tilapia addition (T), with nutrients addition (NP), with tilapia and nutrients addition (T+NP) and a control treatment with no tilapia or nutrients addition (C). A two-way repeated measures ANOVA was done to test for time (t), tilapia (T) and nutrient (NP) effects and their interaction on water transparency, total phosphorus, total nitrogen, phytoplankton and zooplankton. The results show that there was no effect of nutrient addition on these variables but significant fish effects on the biomass of total zooplankton, nauplii, rotifers, cladocerans and calanoid copepods, on the biovolume of Bacillariophyta, Zygnemaphyceae and large algae (GALD ≥ 50 μm) and on Secchi depth. In addition, we found significant interaction effects between tilapia and nutrients on Secchi depth and rotifers. Overall, tilapia decreased the biomass of most zooplankton taxa and large algae (diatoms) and decreased the water transparency while nutrient enrichment increased the biomass of zooplankton (rotifers) but only in the absence of tilapia. In conclusion, the influence of fish on the reservoir plankton community and water transparency was greater than that of nutrient loading. This finding suggests that biomanipulation should be a greater priority in the restoration of eutrophic reservoirs in tropical semi-arid regions

A inserção da educação ambiental não formal no processo de implantação de saneamento ambiental na comunidade rural Colonia Mergulhão, São José dos Pinhais - PR

One of the biggest environmental problems of the population is the lack of sewage treatment, especially in rural communities and low-income. The development of technologies for efficient, low-cost sanitation need to be developed to meet the disadvantaged people of this basic service. This work was the implementation proposal of a technology called constructed wetlands, also known as Wastewater Treatment Plant for Roots Zone - ETEZR. The objective was to develop a non- formal environmental education proposal for redevelopment, using outreach methods for residents and deployment of this technology ETEZR in the rural community of Cologne Grebe in Sao Jose dos Pinhais - PR. With technical support from the Paranaense Technical Assistance and Rural Extension Institute -EMATER and the Federal Technological University of Paraná - UTFPR, 5 ETEZR were deployed in the colony through three theoretical and practical workshops, which involved total 67 people from the community 5 technicians EMATER and 13 of the Municipal Town Hall. Após4 months of implementation were carried out two collections of raw wastewater and treated to analyze physical, chemical and biological parameters. The results evaluated by chemical parameters BOD, COD, phosphorus, ammonia nitrogen comparing raw and treated sewage, demonstrate that ETEZR are effective in the treatment of sewage. 5 Seasons minimum and maximum efficiency between the basic parameters analyzed were 52.2 to 95.5% for BOD; 47 to 94.5% for COD; 21.5 to 96% phosphorus; 30-98% for ammonia nitrogen. Oils and greases, and a series of solid also achieved a significant reduction in their values when comparing the raw sewage and treated sewage, and biological parameters evaluated by means of coliforms showed a reduction of 80 to 99%. With the implementation of environmental education process aimed sanitation was possible to evaluate the perception of the population to accept the environmental sanitation technology using the ETEZR, understand the needs and sanitation concepts for the community. This research evaluated the development of the methodology applied by the non-formal environmental education in order to provide subsidies for rural sanitation plan process for the municipality.

Avaliação da qualidade da água do Rio Piranhas-Açu/RN utilizando a comunidade de macroinvertebrados bentônicos

The biomonitoring technique for water quality in water bodies has been incorporated increasingly in management of the natural resources, using mainly indices of its aquatic community characteristics. In Brazil the first efforts to use this technique was restricted to the South and the Midwest region of this country. Located in the northeast region, this study was conducted at Rio Grande do Norte state and had as main objective the assessment of water quality in the Piranhas-Açu river using benthic macroinvertebrates community as biological indicators. Thus, were applied two biotic indices, the BMWP (Biological Monitoring Working Party score system) and the IBF (Family Biotic Index). According the requirements of these indices, two periods of sampling were determined as basic methodology, in dry seasons of 2006 and 2007. The sampling sites were around the municipalities of Açu, Ipanguaçu, Alto do Rodrigues and Pendências. Physical-chemical measurements; a protocol of rapid assessment of diversity of habitats, and determination of the degree of tolerance of each taxon to organic pollution were also performed. The most abundant organisms found in the river were tolerant with the prevalence of Chironomidae (Diptera) and Melanoides tuberculata. This results, together with those ones got in indices application, showed a considerable organic pollution in the four sample places and the reaches were classified as modified to impacted. According to the used indices, this study suggest that this river have significant alteration in the biotic community and water quality on the organic pollution, and this fact, occurs in the reach of the river further downstream, where were expected a good water quality. Considering these results, measures aiming the conservation of this water body are needed regarding as it is inserted into a fragile ecosystem with dry season phenomenon, and the water of this river has extremely importance for the local economy

Efeitos de manipulações ascendentes e descendentes sobre a comunidade fitoplanctônica em um reservatório eutrófico no semi-árido brasileiro

Top-down (grazing) and bottom-up (nutrient, light) controls are important in freshwater ecosystems regulation. Relative importance of these factors could change in space and time, but in tropical lakes bottom-up regulation has to been appointed as more influent. Present study aimed to test the hypothesis that phytoplankton growths rate in Armando Ribeiro reservoir, a huge eutrophic reservoir in semi-arid region of Rio Grande do Norte state, is more limited by nutrient available then zooplankton grazing pressure. Bioassay was conduced monthly from September (2008) to August (2009) manipulating two levels of nutrients (with/without addition) and two level of grazers (with/without removal). Experimental design was factorial 2X2 with four treatments (X5), (i) control with water and zooplankton from natural spot ( C ), (ii) with nutrient addition ( +NP ), (iii) with zooplankton remove ( -Z ) and (iv) with zooplankton remove and nutrient addition ( -Z+NP ). For bioassay confection transparent plastic bottles (500ml) was incubate for 4 or 5 days in two different depths, Secchi`s depth (high luminosity) and 3 times Secchi`s depth (low luminosity). Water samples were collected from each bottle in begins and after incubates period for chlorophyll a concentration analysis and zoopalnktonic organisms density. Phytoplankton growths rates were calculated. Bifactorial ANOVA was performance to test if had a significant effect (p<0,005) of nutrient addition and grazers remove as well a significant interaction between factors on phytoplankton growths rates. Effect magnitude was calculated the relative importance of each process. Results show that phytoplankton growth was in generally stimulated by nutrient addition, as while zooplankton remove rarely stimulated phytoplankton growth. Some significant interactions happening between nutrient additions and grazers remove on phytoplankton growth. In conclusion this study suggests that in studied reservoir phytoplankton growth is more controlled by ascendent factors than descendent

Comunidade fitoplanctônica e qualidade da água da Lagoa do Jiqui, Parnamirim, RN

It is important to evaluate the quality of water for proper management of these resources, since the increase of environmental degradation and the multiple use of water resources are decreasing the quality of water consumed by living beings. The objective of this study was to characterize the phytoplankton community and its variations during periods of dray and rain in Jiqui Lake located in Parnamirim, RN. It was also aimed to analyze the physical and chemical factors of this environment, in order to contribute to the knowledge of water quality used for human consumption. The collection of water samples were carried out in September 2008 to August 2009. The collection of the phytoplankton community was carried out in four sampling sites (surface, bottom, margin of the lake without macrophytes and site dominated by macrophytes). Phytoplankton was collected using plankton net of 20m. The analysis of nutrients and identification of phytoplankton were performed in the laboratory. The results indicate that concentration of chlorophyll a was high in the bottom with mean value of 1.07 μgL-1 (SD ± 1.61). During the study period there was a dominance of the following species: Euglena gracilis, Trachelomonas sp, Cyclotellas sp, Gomphonema apuncto, Navicula cuspidata var. cuspidata, Navicula sp, Rhopalodia gibba. There was homogeneity between limnological values in the four study sites, with significant difference between the periods of drought and rain. The Jiqui Lake is considered oligotrophic due to its low concentrations of chlorophyll a, high transparency and low levels of nutrients. The values of BOD and chlorophyll a concentration remained below the permitted standards existing for freshwaters in Brazil, thus the water from Lake Jiqui is of good quality, suitable for human consumption.

Variação temporal da Comunidade de macroinvertebrados bentônicos em um riacho intermitente do semiárido brasileiro

In Brazilian semiarid region, the majority of water bodies are temporary and the biodiversity in these ecosystems is poorly known. The goal of this study was to describe the temporal variation of benthic macroinvertebrates in an intermittent stream in the Brazilian semiarid region. From March to July of 2009, surveys of benthic macroinvertebrates and water physiochemical parameters were done in a first order stream located at Piranhas-Açu River basin. 25 macroinvertebrates families were found, 21 belonging to Insecta class. The chironomids were the most abundant group during all study period and were represented by 19 genus. The largest densities and taxonomic richness were seen in the drying phase of the stream while the smallest values were found in the period with the heaviest rainfalls ( wet phase ). Only the families Chironomidae and Ceratopogonidae were found during all study period, suggesting that these groups have better adaptations to support floods and droughts. Furthermore, these two groups seemed to be pioneering in this stream. Among the chironomids, Paratendipes dominated the period of floods while Tanytarsus were more abundant in the drying phase . This study showed that hydrological fluctuation is the main force influencing the macroinvertebrate community in this stream, therefore, efforts seeking the conservation and management of Brazilian semiarid water bodies should consider this high natural variability in flow regime

Bacia do Atlântico : o berço da nova comunidade

Dissertação de Mestrado, Relações Internacionais, 1 de Abril de 2016, Universidade dos Açores.

Relatório de estágio apresentado à Universidade da Madeira para a obtenção do grau de mestre em Educação Pré-Escolar e Ensino do 1º Ciclo do Ensino Básico

O presente relatório surge no âmbito da Unidade Curricular de Relatório da Prática Pedagógica, do 2º ano do Mestrado em Educação Pré-Escolar e Ensino do 1º Ciclo do Ensino Básico da Universidade da Madeira e expõe a intervenção pedagógica realizada numa sala de Transição I no Infantário o Girassol e numa turma de 1º Ano na EB1/PE da Lombada, ambas situadas no conselho do Funchal. Tem como principal objetivo ilustrar a minha prática pedagógica, de forma reflexiva e fundamentada espelhando as competências adquiridas ao longo do meu percurso académico, onde são relatadas algumas atividades realizadas durante as duas práticas pedagógicas onde o principal objetivo foi responder a todas as necessidades das crianças promovendo variadas situações de aprendizagem e desenvolvimento. O trabalho realizado com a comunidade educativa, incluindo crianças, encarregados de educação e comunidade educativa é também relatado, demonstrando cooperação. O final do relatório contém uma reflexão em modo de conclusão onde é ilustrada de que modo a escrita deste relatório como a prática pedagógica influenciaram a minha identidade enquanto profissional no campo da educação.

Demanda química de oxigênio, clorofila a e comunidade fitoplanctônica como indicadores da qualidade da água no Canal do Pataxó/RN

The current study examined spatial-temporal modifications and water quality through chemical and biotic indicators during both dry (January, February and November 2006) and wet seasons (March to June 2006). This study was carried out in Armando Ribeiro Gonçalves Reservoir, RN, Canal do Pataxó and after the water station treatment (WST). The physical-chemical parameters were measured in situ and inorganic nutrients, chlorophyll a and Free Oxygen Demand (FOD) were analyzed in laboratory conditions. Quali quantitative analyses of phytoplankton were carried out utilizing Sedgwick-Rafter camera. Results indicate that DQO concentrations were low. FOD concentrations in the reservoir were comparatively higher in the dry season (5.21 mgL-1; 5.64 mgL-1 e 6.05 mgL-1) in relation to the wet season (4.52 mgL-1; 4.12 mgL-1 e 4.92 mgL-1), in surface, intermediate and bottom waters, respectively. FOD values were inferior to 1.0mgL-1in both Canal do Pataxó and after WST, which is considered adequate for public use reservoirs. Although FOD concentrations were low, Armando Ribeiro Gonçalves Reservoir, Canal do Pataxó and WST were classified as euthophizied, mesotrophic ad oligotrophic, respectively, considering the Index of Trophic State Criteria. Chlorophyll a concentrations in the study reservoir were higher in the surface (199.2 µgL-1) during the wet season, whereas in Canal do Pataxó concentrations decreased from 1.56 µgL-1 to 0.028 µgL-1, and after WST values were low (0.059 µgL-1). Dominance of cianobacterias, such as Planktotrhix agardhii (dry season) and Microcystis sp (wet season) was registered in all three areas. In the reservoir and Canal do Pataxó, density of cianobacterias, such as P. agardhii and Microcistys sp., was superior to the values allowed by the Health ministry (HM). However, after WST, density values of cianobacteria were inferior to values established by the HM

Entre a pesca e a escola: a educação dos povos tradicionais a partir da comunidade pesqueira na ilha da Torotama (Rio Grande/RS)

O presente estudo aborda a temática da educação escolar nas comunidades tradicionais. Essa abordagem ocorre a partir do estudo de caso da Ilha da Torotama, Rio Grande/RS. É reconhecido que as comunidades tradicionais sofrem uma intensa transformação a partir da lógica moderna do capital, no caso do município de Rio Grande, percebe-se o quanto os discursos em torno do Polo Naval, paralelamente com a crise da pesca artesanal, impulsionam o êxodo das comunidades pesqueiras que constituem a região, levando o pescador ao abandono do trabalho, bem como a uma drástica ruptura frente as formas de vida no espaço tradicional de pesca. A partir desse panorama cabe questionar os sentidos que a escolarização assume nesses espaços, portanto: Quais as contradições e possibilidades da educação escolar nas comunidades tradicionais? Além disso, é necessário questionar: É possível (re)pensar as formas de contemplar os anseios desses povos tradicionais? Nesse sentido, busca-se compreender e problematizar as contradições e possibilidades em torno da escolarização em um contexto do Campo, constituído por povos tradicionais. Para o enfrentamento da problemática, assume-se uma postura dialética a partir de Gadotti (2012) e Severino (2001); esse embasamento epistemológico sustenta o olhar e a escuta da pesquisadora frente aos processos presentes no estudo. Com efeito, por meio da utilização da História Oral na perspectiva assumida por Thompson (1992), encontra-se para maior organização do processo de construção dos dados, a História Oral Temática (MEIHY e HOLANDA, 2010) e (MEIHY, 1996). Nesse horizonte, realizam-se entrevistas com três educadores e quatro educandos do Projeto Educação para Pescadores, o qual ocorre enquanto um processo de escolarização na Ilha da Torotama. O estudo aponta para a necessidade de pensar a escola nas comunidades tradicionais a partir do horizonte da Educação do Campo. Essa compreensão ocorre a partir dos desafios encontrados com relação a escolarização das referidas comunidades; haja vista que o Estado não assume de forma efetiva a educação básica nesses contextos, tampouco aborda a possibilidade de retorno dos sujeitos que tiveram a escolarização negligenciada. A omissão do poder público frente as demandas da comunidade, junto as formas de incentivo e beneficiamento da pequena burguesia industrial pesqueira, por exemplo, são indicativos de que as comunidades tradicionais sofrem em seu contexto uma forte contradição, pois, muito embora o Estado tenha enquanto obrigação resguardar tais povos, as demandas do mercado prevalecem na dinâmica evidenciada. Assim, assumir as lutas lançadas pela 8 perspectiva da Educação do Campo, é uma pertinente possibilidade de ruptura com o sentido que a escola vem apresentando nesses espaços: a escola é vista como uma forma de saída da comunidade e do trabalho da pesca. Portanto, acredita-se que ao assumir o horizonte da Educação do Campo, o trabalho desses sujeitos pertencentes as comunidades tradicionais possa ser problematizado, fomentando a construção crítica frente aos desafios impostos pela lógica opressora.

Um novo olhar: atividade lúdica como instrumento de integração entre a universidade e escola pública

COSTA, Ivaneide Alves Soares de; Santos, Adriana de Souza; COSTA, Anderson Pereira, et al. Um novo olhar: atividade lúdica como instrumento de integração entre a universidade e escola pública. SEMINÁRIO NACIONAL DO ENSINO MÉDIO, 1. ,2011, Mossoró. Anais... Mossoró: UERN, 2011. p.955 - 965

Biomonitoramento da comunidade de macroinvertebrados de um reservatório de abastecimento público no sul do Brasil

The faunal inventory of the macroinvertebrate community is important to the environmental assessment, since this biota is sensitive to human disturbance. The reservoir of Rio Verde, located on the first plateau of Paraná, is inserted into an agricultural region with several forest fragments Araucaria. The aim of this study was to evaluate the environmental integrity of the reservoir through ecological indexes of macroinvertebrate community benthic and associated with macrophytes. Five sampling points were defined in the study area, which comprise distinct microhabitats in the basin. There were four sampling campaigns, each by weather station: Spring (2014); Summer (2015); Autumn (2015) and Winter (2015). In each sample were measured abiotic various parameters in the field and be collected water samples for nutrient analysis in the laboratory. The macroinvertebrates were collected in triplicate at adapted Macan method using mesh sieve 1 mm and CPUE (catch per unit effort) for 20 minutes. In order to pellet sample was used a dredger model Petersen 2L. Still in the field, by season, samples were collected from macrophytes Myriophyllum aquaticum (Vell) Verdc. and Potamogeton montevidensis A. Benn. in triplicates in the fluvial region of the reservoir, to analyze the associated fractal dimension and macrofauna. For this we used a PVC sampler specific volume 0.025 m3. the following ecological descriptors were calculated in each case: abundance, wealth tax, wealth Margalef, Shannon-Wiener diversity, evenness evenness through the Past software. The index Biological Monitoring Working Party (BMWP) for monitoring sampling points was also calculated. Regarding the statistical analysis, we used the analysis of PERMANOVA to compare points and seasons and canonical correspondence analysis (CCoA) for variables. Regarding M. aquaticum and P. montevidensis it was not verified difference to the average associated macroinvertebrates. However there was a difference for abundance of organisms in the fractal dimension and biomass of specimens. M. aquaticum is more complex and took more macrofauna in relation to P. montevidensis. Regarding the monitoring of the reservoir, it showed up mesotrophic with moderate nutrient concentrations and within the regulatory limits. Benthic macrofauna showed statistical differences in relation to the reservoir region, sample point and temporal variation. The BMWP index showed that the river region has the highest biotic integrity (in all samples above 70 points), and the ecological descriptors of wealth and Margalef diversity of Shannon- Wiener higher. In point 4 (dam downstream) were recorded evidence of possible impacts due to lower wealth and BMWP index which resulted in a questionable quality water. New approaches are needed to focus on the aquatic community in the best understanding of this ecosystem and also with a view to environmental preservation of the Green River Basin.

Música na multideficiência: impacto na qualidade de vida e no comportamento pessoal e social de uma comunidade em particular

A presente investigação reflete um estudo que investiga o impacto da música na melhoria da qualidade de vida de uma população de adultos com deficiência mental e/ou sensorial e/ou motora, ao nível dos comportamentos individuais e sociais, e das capacidades de comunicação e expressão interpessoal. Com ele, tenciona-se trilhar um caminho na aceitação e valorização de cada indivíduo enquanto ser individual e social, encarando os seus aspetos singulares, biológicos e sociais como oportunidades de exploração de capacidades e particularidades, e investigando a concretização destes ideais através da música. Neste sentido, durante o ano letivo de 2014/2015, conduziu-se uma intervenção prática semanal junto de uma comunidade com multideficiência que frequenta um Centro de Atividades Ocupacionais de uma Instituição Particular de Solidariedade Social do concelho de Ílhavo. Após terem sido delineados objetivos específicos para o grupo e objetivos individuais para cada um dos elementos da amostra, realizaram-se dois períodos de experimentação, entre os quais se procedeu à aferição de ferramentas. Os resultados das sessões implementadas foram avaliados através de uma escala de avaliação e de questionários. Provou-se que todos os objetivos foram concretizados e concluiu-se que a música pode proporcionar melhorias significativas na qualidade de vida de uma população com deficiência ou incapacidade. A proposta não é de inclusão, mas sim de não exclusão, sendo o projeto musical um agente dinamizador e consciencializador de princípios éticos de uma cidadania mais participativa.

Microcrédito emancipatório no nordeste do Brasil? : estudo de caso do Crediamigo Comunidade nos municípios de Caucaia-Ce e Maranguape-Ce

This piece of work consists in a study case of Crediamigo Comunidade, a product from the portfolio of Crediamigo Program of Banco do Nordeste, that uses the methodology of the Comunitary Banks in the concession of low amount loan to poor communities. The main question consists to understand how the Crediamigo Comunidade is characterized faced to the conflict of emancipatory versus liberal paradigms, that exists in the microcredit area. The main objective will analyze how the mechanisms: social capital, empowerment, formation to credit education and better conditions for economic and social issues promoted in the specific objectives of this product, before the dipute between these paradigms. The method adopted analyzed, in a longitudinal perspective, the three years of the product s existence (jun/2005 to jul 2008). Primary and secondary data made possible to identify qualitatively, emancipatory and non emancipatory attributes in the actions and results of Crediamigo Comunidade. It is concluded that the Crediamigo Comunidade works in a liberal logic of the Crediamigo Program, consequently, his focus is not in the emancipation of the poorest clients. The empowerment is individual and not communitary or Freiriano ; the social capital relations enlarges itself in its bounding and bridging ties, but not in its linkage ties, to have access to politic actors and consequently communitary strengthen. All the formation in the Crediamigo is strictly commercial. These characteristics happen by the liberal paradigm in the Crediamigo management and of all of its products, including the Crediamigo Comunidade

A inclusão da comunidade cigana: um projeto de saúde escolar no Concelho do Seixal

A inclusão da comunidade cigana requer uma postura diferente por parte desta comunidade que passa pela assunção das normas por que todos os cidadãos portugueses se devem reger, em termos de direitos e deveres, exercendo a sua cidadania plena, de forma ativa e participada. Objetivo: Promover a inclusão das crianças ciganas nas escolas do Concelho do Seixal. Metodologia: utilizou-se a metodologia de planeamento em saúde, recorrendo à entrevista e grelha de observação, como instrumentos de recolha de dados. Resultados: Deficit de conhecimentos sobre cuidados de higiene nas crianças ciganas; Deficit de conhecimentos sobre cultura cigana pelos professores; Desvalorização da preservação dos espaços comuns do bairro pelas famílias ciganas. Conclusões: Importância da promoção de hábitos de higiene pessoal junto das crianças ciganas, necessidade de formação para professores sobre multiculturalidade e cultura cigana e de intervenção articulada e em parceria, no bairro, promovendo a mudança de comportamentos para preservação dos espaços comuns; ABSTRACT: The inclusion of the Roma community requires a different attitude on the part of this community that goes by the assumption of standards that all Portuguese citizens should be governed in terms of rights and duties, exercising their full citizenship, active and participatory way. Objective: To promote the inclusion of Roma children in the Municipality of Seixal schools. Methodology used the health planning methodology, using interview and observation grid, such as data collection tools. Results: Deficit of knowledge about hygiene in the Roma children; Deficit of knowledge about Roma culture by teachers; Devaluation of preservation of the common areas of the neighborhood by Roma families. Conclusions: The importance of promoting personal hygiene habits with Roma children, the need for training for teachers on multiculturalism and gypsy culture and coordinated intervention and partnership, in the neighborhood, promoting behavior change to preserving public spaces.