scholarly journals A Importância da Educação Ambiental para o avanço da Produção Agroecológica na Região do Semiárido Pernambucano / The Importance of Environmental Education for the Advancement of Agroecological Production in the Pernambuco Semi-Arid Region

2020 ◽  
Vol 14 (50) ◽  
pp. 783-794
Author(s):  
Francisca Érica De Alencar ◽  
Marcos Vinicius Campelo Junior

A agroecologia surgiu com o objetivo de resgatar e combinar o conhecimento do agricultor com as bases científicas, para que seja o mais sustentável possível. Na região semiárida de Pernambuco os níveis de assistência técnica são ainda muito baixos, mas alguns órgãos não governamentais realizam esses suportes. O objetivo do presente estudo foi discutir sobre a importância da educação ambiental para o avanço da produção agroecológica na região semiárida de Pernambuco. A metodologia constou de 23 estudos sobre a temática em questão, extraídos de maneira aleatória na base de dados Scielo entre Livros e artigos. Utilizou-se como filtro, as palavras-chave: Agroecologia, Agricultura Familiar e, Educação Ambiental. Os resultados levaram a crer que a  expansão das práticas agroecológicas junto à educação ambiental (EA), implicaram em  benefícios para a sociedade, desde o aprendizado sobre como manejar suas propriedades de forma sustentável, consumindo menos água, utilizando menos insumos externos, sem degradar o meio ambiente, bem como evitando prejudicar a saúde da sua própria família e da comunidade a que abastece com seus produtos. 

2014 ◽  
Vol 8 (2) ◽  
pp. 47-62 ◽  
Author(s):  
Pollyana da Silva de Magalhães ◽  
Sandra Maria Furiam Dias

Esse estudo propõe uma metodologia pautada em estratégias participativas para a construção de uma matriz de indicadores para avaliação de programas/projetos de Educação Ambiental (EA) em saneamento. Para isso, conjugaram-se fundamentos teóricos e marcos legais de ambas as áreas a partir da construção, aplicação e validação de indicadores, com estratégias metodológicas onde, os interesses e percepções dos atores envolvidos em tais programas/projetos, pudessem ser conhecidos e eticamente negociados para que, assim, o rigor metodológico e os conhecimentos empíricos favoreçam o empoderamento dos envolvidos e, desse modo, a legitimidade e efetividade da avaliação. A presente proposta foi aplicada em um programa de EA para a gestão de resíduos sólidos desenvolvido em um município do semiárido baiano. Palavras-Chave: Educação Ambiental, Saneamento, Possibilidades Metodológicas, Construção de Indicadores, Avaliação de Programas/projetos. Abstract This study proposes a methodology based in participatory strategies for building a matrix of indicators for evaluating programs/projects of Environmental Education (EE) in sanitation. For this, theoretical grounds and legal frameworks in both areas were combined from the construction, application and validation of indicators with methodological strategies in which the interests and perceptions of the actors involved in such programs/projects could be known and ethically negotiated so that the methodological rigor and empirical knowledge favor the empowerment of those involved and thus the legitimacy and effectiveness of the evaluation. The present proposal was applied in an EE Program for Solid Waste Management developed in a municipality in the semi-arid region of Bahia. Keywords: Environmental Education, Sanitation, Methodological Possibilities, Construction of Indicators, Program/ projects Evaluation.


2020 ◽  
Vol 11 (3) ◽  
pp. 277-288
Author(s):  
Juliana Do Nascimento Bendini ◽  
Michelli Ferreira Dos Santos ◽  
Maria Carolina De Abreu ◽  
Gardner Andrade Arrais ◽  
Maria Mayara Vieira ◽  
...  

Considerando a educação ambiental como instrumento de transformação e uma prioridade entre as ações rumo ao desenvolvimento sustentável, o projeto de extensão universitária “Meliponário didático: uma estratégia para a conservação das abelhas sem ferrão no semiárido piauiense” visa a sensibilização de crianças e jovens, estudantes da educação básica do município de Picos e região, quanto à importância e conservação das abelhas nativas do semiárido piauiense. O presente artigo tem como objetivo relatar as ações e impactos do referido projeto desenvolvido na Universidade Federal do Piauí, em Picos. Para isso, descreveu-se o projeto a partir da consolidação do espaço de aprendizagem, desde a formação dos acadêmicos e monitores até a realização das visitas.  Os visitantes primeiramente assistem à uma aula, ministrada pelos próprios acadêmicos, sobre as abelhas e seguem para o Meliponário onde observam as abelhas em atividade. Durante as visitas a observação de algumas expressões espontaneamente pronunciadas pelos alunos, nos auxiliam a avaliar os impactos positivos do projeto para a conservação das abelhas nativas, como: “Professora, as abelhas são os cupidos da natureza!” De abril de 2018 a novembro de 2019 foram recebidos 560 visitantes da rede pública de ensino de Picos, de IES e de outros municípios. Considera-se que as ações educativas promovidas no Meliponário Didático da UFPI configuram estratégias eficazes e necessárias para a constituição de uma relação sustentável com as abelhas. Palavras-chave: Caatinga; Educação Ambiental; Meliponicultura; Biodiversidade   Didactic meliponary: University extension as a strategy for the conservation of stingless bees in the Piauí semiarid Abstract: Considering Environmental Education as an instrument of transformation and a priority among actions towards sustainable development, the university extension project "Didactic meliponary: a strategy for conservation of stingless bees in the semi-arid region of Piauí" aims to raise the awareness of children and young people, students of primary education in the municipality of Picos and region, regarding the importance and conservation of native bees in the semi-arid region of Piauí. This paper aimed to report the actions and impacts of the referred project developed at the Federal University of Piauí, in Picos, Piauí State, Brazil. The consolidation of the learning space and the training of the monitors to conduct the visits were described. Visitors first attend a class taught by the academics about bees and proceed to the meliponary ("Meliponário") to observe the active bees and their social structure. During the visits, expressions spontaneously pronounced by the students are noted, which helps us to assess the positive impacts of the project for the conservation of native bees. One of the expressions was: "Teacher, bees are nature's cupids!" From April 2018 to November 2019, 560 visitors from public schools in Picos, IES, and other municipalities were received. It is considered that the educational actions promoted at UFPI's Didactic Meliponary are an effective and necessary strategy for the constitution of a sustainable relationship with bees. Keywords: Caatinga; Environmental Education; Meliponiculture; Biodiversity


Author(s):  
Takoua Ben Hlel ◽  
Feten Belhadj ◽  
Fatih Gül ◽  
Muhammed Altun ◽  
Ayşe Şahin Yağlıoğlu ◽  
...  

Background:: Luffa cylindrica is a plant that is widely distributed in Africa and Asia and it can be grown in regions with tropical or subtropical climates. Few patents dealt with Loofah biological properties, including some functional foods formulated from its leaves. Objective:: This study aimed to structurally and functionally characterize the bioactive compounds of L. cylindrica leaves grown in two different environments. Methods:: The extracts of L. cylindrica leaves collected from two Tunisian locations: Essouasi (LE), a semi-arid region and Medenine (LM) an arid region, were investigated for their phenolic compounds and fatty acids using HPLC/TOF-MS and GCMS techniques respectively. Furthermore, the antioxidant capacity was evaluated with DPPH, Chelating effect, Hydroxyl radical and Superoxide anion scavenging activities while the anticancer activity against HeLa cell lines was assessed using xCELLigence real time cell analyzer and lactate dehydrogenase cytotoxicity assay. Results:: The antiproliferative capacity of both extracts was time and dose-dependent with LE presenting the lowest HeLa cell index (CI = 0.035 ± 0.018, 250 μg/ml). LE also showed the best cytotoxic capacity (56.49 ± 0.8%) and antioxidant potential (IC50 = 54.41 ± 1.12 μg/ml for DPPH and 12.12 ± 0.07 μg/ml for chelating effet). 14 phenolic compounds were detected in LE with ferulic acid being the major compound (5128.5 ± 4.09 μg Phenols/g) while LM had only 6 phenolics. GCMS analysis showed the presence of omega-3 fatty acids in LE. Conclusions:: Our findings suggest that L. cylindrica leaves, especially when collected from semi-arid regions, are promising for formulating nutraceuticals of interest.


2021 ◽  
Vol 24 ◽  
pp. e00367
Author(s):  
Patrick Filippi ◽  
Stephen R. Cattle ◽  
Matthew J. Pringle ◽  
Thomas F.A. Bishop

Atmosphere ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 927
Author(s):  
Jamshad Hussain ◽  
Tasneem Khaliq ◽  
Muhammad Habib ur Rahman ◽  
Asmat Ullah ◽  
Ishfaq Ahmed ◽  
...  

Rising temperature from climate change is the most threatening factor worldwide for crop production. Sustainable wheat production is a challenge due to climate change and variability, which is ultimately a serious threat to food security in Pakistan. A series of field experiments were conducted during seasons 2013–2014 and 2014–2015 in the semi-arid (Faisalabad) and arid (Layyah) regions of Punjab-Pakistan. Three spring wheat genotypes were evaluated under eleven sowing dates from 16 October to 16 March, with an interval of 14–16 days in the two regions. Data for the model calibration and evaluation were collected from field experiments following the standard procedures and protocols. The grain yield under future climate scenarios was simulated by using a well-calibrated CERES-wheat model included in DSSAT v4.7. Future (2051–2100) and baseline (1980–2015) climatic data were simulated using 29 global circulation models (GCMs) under representative concentration pathway (RCP) 8.5. These GCMs were distributed among five quadrants of climatic conditions (Hot/Wet, Hot/Dry, Cool/Dry, Cool/Wet, and Middle) by a stretched distribution approach based on temperature and rainfall change. A maximum of ten GCMs predicted the chances of Middle climatic conditions during the second half of the century (2051–2100). The average temperature during the wheat season in a semi-arid region and arid region would increase by 3.52 °C and 3.84 °C, respectively, under Middle climatic conditions using the RCP 8.5 scenario during the second half-century. The simulated grain yield was reduced by 23.5% in the semi-arid region and 35.45% in the arid region under Middle climatic conditions (scenario). Mean seasonal temperature (MST) of sowing dates ranged from 16 to 27.3 °C, while the mean temperature from the heading to maturity (MTHM) stage was varying between 12.9 to 30.4 °C. Coefficients of determination (R2) between wheat morphology parameters and temperature were highly significant, with a range of 0.84–0.96. Impacts of temperature on wheat sown on 15 March were found to be as severe as to exterminate the crop before heading. The spikes and spikelets were not formed under a mean seasonal temperature higher than 25.5 °C. In a nutshell, elevated temperature (3–4 °C) till the end-century can reduce grain yield by about 30% in semi-arid and arid regions of Pakistan. These findings are crucial for growers and especially for policymakers to decide on sustainable wheat production for food security in the region.


2021 ◽  
Vol 780 ◽  
pp. 146500
Author(s):  
Ajit T. Singh ◽  
C.M. Laluraj ◽  
Parmanand Sharma ◽  
B.L. Redkar ◽  
Lavkush Kumar Patel ◽  
...  

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