Ecology of orchid species was studied, surveyed and characterized on Serra das Cabeças, a subunit of Parque Estadual da Serra do Brigadeiro (PESB), Araponga-MG, Brazil. Data were obtained through monthly visits on all trails of the area, from 2004 to 2014 covering different types of vegetation, collecting some species and identifying them. We observed characteristics such as type of vegetation, habitat where each species was found, intensity of luminosity, altitude and position of plants in relation to watercourses. Obtained results allowed to conclude: 80 species were identified, of which 45 had not been reported for PESB; five for the state of Minas Gerais, and four for Brazilian flora. Concerning habitat, 57.50% are epiphytic, 1.25% hemiepiphytic, 2.50% humic, 15.00% lithophytic and 23.75% terrestrial. Considering vegetation, 52.50% are located in upper montane forest, 1.25% understorey, 10.00% slope forest, 8.75% in transition forest to altitude field, and 27.50% in altitude field. The survey of Orchidaceae species of present study will allow updating the lists of species present in PESB and of Brazilian flora, recorded in Jardim Botânico in Rio de Janeiro State.
The teaching-learning process becomes more attractive when practical classes are used as part of methodological tools. Aiming (i) to stimulate the interest of high school students in the microbiological world and (ii) to provide didactic experience for microbiology graduate students, practical classes were undertaken. These classes were carried out during 2016 and 2017 using the infrastructure at Universidade Federal de Viçosa. Briefly, laboratory classes were prepared and taught by microbiology graduate students and an evaluation questionnaire was answered by the participants after the classes. Approximately 95% of high school students, from both years, evaluated the experience outside the school routine as very good and good; in detail, 90.09% (2016) and 100% (2017) of graduate students evaluated this experience as very good and good. The relationship between high school and graduate students also increased the curiosity of the former regarding the university environment. Accordingly, information retention regarding the ‘microbiology world’ was verified after 1 year and the students were able to remember important terms related to the microbiology class. In addition, this work allowed graduate and high school students to build a closer relationship and created an excellent teaching-learning strategy for both.
A Orchidaceae é uma das mais numerosas famílias vegetais entre as Angiospermas, sendo possível encontrar orquídeas em praticamente todas as regiões do mundo. O Brasil, com território vasto e diverso, é privilegiado quanto à presença de inúmeras espécies de orquídeas. Muito apreciadas por sua diversidade, as orquídeas estão entre as plantas mais cultivadas. Para seu desenvolvimento e crescimento adequados, é necessário um cultivo favorável, em que as condições ambientais da casa de vegetação ou orquidário sejam similares às condições naturais do habitat de origem. A caracterização ambiental é importante por disponibilizar uma análise das condições em que as plantas se encontram e se as mesmas estão adequadas ou não. O presente trabalho tem por objetivo caracterizar ambientalmente a casa de vegetação do Projeto Orquídeas no CAp-COLUNI para um mês típico de transição do outono para o inverno. A casa de vegetação em questão continha um total de 350 plantas cultivadas com inúmeras espécies. A caracterização ambiental foi feita através da mensuração diária das variáveis climáticas que influenciam o metabolismo vegetal. Temperatura ar (Ta), umidade relativa do ar (UR) e intensidade luminosa (Lum) foram mensuradas às 6h, 9h, 12h, 15h e 18h durante o período de 26/05 a 01/07/2011. Analisando os resultados obtidos, conclui-se que os fatores ambientais se mostraram satisfatórios, uma vez que, de acordo com dados bibliográficos, a temperatura ótima para a maioria das orquídeas brasileiras está entre 15 e 25°C, a UR ideal está entre 60 a 80% e a luminosidade interna adequada é igual a 1/2 a 1/3 da externa.
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