Education, Multidisciplinary, Ecology, Evolution, Behavior and Systematics, Spectroscopy
11
Scopus Publications
Scopus Publications
ANALYSIS OF INDICATORS OF GEO-ENVIRONMENTAL SUSTAINABILITY IN AMAZONIAN STATE OF PARÁ, BRAZIL Willian José Ferreira, Rosivan Alves Nilander, Marcelo dos Santos Targa, Rodrigo César da Silva, Celso de Souza Catelani, Angelo Ricardo Balduíno, Jackes de Pabllo Pereira Tiburcio Revista Brasileira De Gestao E Desenvolvimento Regional, 2025 A recente urbanização aleatória e os efeitos adversos das alterações climáticas são preocupações crescentes na investigação sobre o clima global. Na Amazônia Paraense, a ausência de estudos abrangentes envolvendo indicadores geoambientais de sustentabilidade (IGAS) impede uma compreensão completa dos impactos das atividades humanas e políticas públicas na região. Desse modo, este estudo analisa IGAS no município de Barcarena, Pará, entre 2000 e 2010, para identificar impactos ambientais e socioeconômicos e orientar a criação de políticas públicas para um desenvolvimento equilibrado da região. Por meio de dados do Instituto Brasileiro de Geografia e Estatística (IBGE) e técnicas de geoprocessamento, são avaliados os índices de abastecimento de água, tratamento de esgoto e gestão de resíduos sólidos. Os resultados mostram avanços significativos na sustentabilidade ambiental, embora persistam desafios em determinadas áreas. Esta análise é chave para a Agenda 2030 da Organização das Nações Unidas (ONU), fornecendo dados essenciais para alcançar os Objetivos de Desenvolvimento Sustentável.
Sustainability, social inclusion, and governance: analyzing ESG practices at an urban public university in São Paulo, Brazil Nadine Sant'Anna Beneton, Willian José Ferreira, Marcelo dos Santos Targa, Vicente Rodolfo Santos Cezar Revista Ambiente E Agua, 2025 The growing global emphasis on environmental, social and governance (ESG) principles has driven higher education institutions to adopt more sustainable and socially inclusive practices. However, a lack of metrics and regular reporting often limits the ability to assess the true impact of these initiatives. This study critically examined ESG practices at a public urban university in São Paulo, focusing on the Department of Agricultural Sciences (DAS). Using a case study approach, the research employed a systematic literature review, document analysis and on-site observations to assess how ESG principles are implemented. Correspondence Factor Analysis (CFA) and Discursive Textual Analysis (DTA) were used to identify patterns and insights. The findings highlight the University's commitment to sustainability and social inclusion, particularly through initiatives such as the Accessibility Assurance Plan (PGA) and environmental conservation efforts. However, the study also identified the need for structured evaluation metrics and more transparent reporting to better monitor the impact of these initiatives. The research concludes by suggesting that future studies should explore how ESG practices influence students' perceptions of educational quality and examine the financial costs and benefits of these initiatives to guide more strategic implementation in higher education institutions.Keywords: environment, equity, policies, social inclusion.
Self-evaluation in Graduate Education: a replicable model from the experience of a municipal public institution Willian José Ferreira, Juliana Marcondes Bussolotti, Suzana Lopes Salgado Ribeiro, Monica Franchi Carniello Praxis Educativa, 2025 Práticas de autoavaliação são centrais na gestão e no aprimoramento de Programas de Pós-Graduação em Educação. No Brasil, muitas assumem caráter descritivo, pouco conectado à decisão e ao impacto social. Neste estudo, analisa-se criticamente a autoavaliação do Programa de Pós-Graduação Profissional em Educação (2021-2024) de uma universidade pública municipal de São Paulo, buscando transformá-la em rotina estratégica orientada por evidências. A metodologia triangulou análise documental, survey com egressos, entrevistas e dissertações (com apoio de Processamento de Linguagem Natural), além de síntese SWOT operacionalizada via 5W2H. Apesar da alta qualidade das disciplinas e do desempenho docente, persistem entraves em infraestrutura e devolutivas, uma vez que a coerência temática das dissertações contrasta com a necessidade de fortalecer a transferência de conhecimento às redes de ensino. Contudo, a abordagem gerou planos verificáveis e fortaleceu a governança. Para 2025-2028, propõe-se regime público e cumulativo de autoavaliação, com métricas de transferência, internacionalização recorrente e metas para equidade e infraestrutura.
Temporal evolution of suspended solids in the management of medium-sized watersheds in the Metropolitan Region of Paraíba Valley Willian José Ferreira, Marcelo dos Santos Targa, Celso de Souza Catelani Revista Ambiente E Agua, 2023 The demand for water to meet the needs of the population has increased with the rapid growth of urban centers. The urban expansion in Taubaté (23.03º S, 45.55º W) negatively impacts the Una River Basin, a significant tributary of the Paraíba do Sul River, resulting in issues of sedimentation, siltation, and flooding. Systematic monitoring of sediment characteristics in human-influenced areas allows for an understanding of water quality variations, watershed diagnosis, and analysis of impacts on aquatic ecosystems, with total suspended solids (TSS) being a widely used parameter in this context. This study investigated the temporal evolution of the TSS concentration in the Una River, highlighting the importance of sound management practices to reduce sedimentation in urban catchments, through the analysis of biochemical parameters obtained from the Cetesb/Infoaguas platform. From 2008 to 2022, lower TSS concentrations were observed in winter (86.2 ± 35.6 mg L-1), while higher values were obtained in summer (779.7 ± 1024.8 mg L-1). In general, statistically significant correlations were found at the 95% confidence level between TSS and turbidity (Pearson's r = 0.93), dissolved oxygen (Pearson's r = -0.46), and electrical conductivity (Pearson's r = -0.43), while other evaluated parameters (pH, dissolved solids, and precipitation) did not show significant correlations. Among the key findings, it is crucial to study the temporal evolution of TSS and to implement sustainable management strategies in urban catchments, including erosion control measures and stormwater management, to preserve water quality, aquatic ecosystems, and water supply in the urban communities of RMVale.
 Keywords: basin, management strategies, sustainable, total suspended solids.
Ground-based and Satellite Measurements of Solar Spectral Irradiances at 305 nm and 380 nm at a Tropical Site Abel A. Silva, Willian J. Ferreira, Plinio C. Alvala Photochemistry and Photobiology, 2022 The solar radiation has been monitored through ground‐based and satellite instruments all over the world for decades. This is also important for both checking and validation of satellite probing. In this work, we compare spectral irradiances at 305 nm (UV‐B) and 380 nm (UV‐A) from a ground‐based radiometer and the Ozone monitoring instrument (OMI) for a tropical site in 2019–2020. Measurements had the auxiliary support of a ground‐based imager to identify cloud cover. The presence of clouds introduces the largest differences between satellite and ground‐based measurements. In fact, on average, for all‐sky (AS, only cloudy skies) conditions such differences (satellite – ground‐based) were 46% and 30% at 305 nm and 380 nm, respectively, while for cloud‐free‐sky (CFS) conditions, the differences dropped to 17% and 8%. In addition, the linear fitting between ground‐based and satellite measurements yielded a coefficient of determination (r2) of 0.857 (for AS) and 0.984 (for CFS) at 305 nm and 0.774 (for AS) and 0.950 (for CFS) at 380 nm. The differences between these AS and CFS values of r2 were 95% statistically significant. Such results imply the hindrance clouds (and also aerosols based on the results for CFS) still set to obtain UV‐B and UV‐A surface irradiance from satellite probing.
Tropical peatlands and their contribution to the global carbon cycle and climate change Kelly Ribeiro, Felipe S. Pacheco, José W. Ferreira, Eráclito R. Sousa‐Neto, Adam Hastie, Guenther C. Krieger Filho, Plínio C. Alvalá, Maria C. Forti, Jean P. Ometto Global Change Biology, 2021 Abstract Peatlands are carbon‐rich ecosystems that cover 185–423 million hectares (Mha) of the earth's surface. The majority of the world's peatlands are in temperate and boreal zones, whereas tropical ones cover only a total area of 90–170 Mha. However, there are still considerable uncertainties in C stock estimates as well as a lack of information about depth, bulk density and carbon accumulation rates. The incomplete data are notable especially in tropical peatlands located in South America, which are estimated to have the largest area of peatlands in the tropical zone. This paper displays the current state of knowledge surrounding tropical peatlands and their biophysical characteristics, distribution and carbon stock, role in the global climate, the impacts of direct human disturbances on carbon accumulation rates and greenhouse gas (GHG) emissions. Based on the new peat extension and depth data, we estimate that tropical peatlands store 152–288 Gt C, or about half of the global peatland emitted carbon. We discuss the knowledge gaps in research on distribution, depth, C stock and fluxes in these ecosystems which play an important role in the global carbon cycle and risk releasing large quantities of GHGs into the atmosphere (CO 2 and CH 4 ) when subjected to anthropogenic interferences (e.g., drainage and deforestation). Recent studies show that although climate change has an impact on the carbon fluxes of these ecosystems, the direct anthropogenic disturbance may play a greater role. The future of these systems as carbon sinks will depend on advancing current scientific knowledge and incorporating local understanding to support policies geared toward managing and conserving peatlands in vulnerable regions, such as the Amazon where recent records show increased forest fires and deforestation.
Analysis of the influence of environmental parameters on methane flux from floodplains and lakes in the Abobral River, Pantanal, Brazil Marcelo Gomes Da Silva, Plínio Carlos Alvalá, Luciano Marani, Willian José Ferreira Revista Ambiente E Agua, 2016 This study evaluates the influence of physical and chemical characteristics of the water column in the processes that result in methane emissions in the Pantanal. Two surveys were conducted in 2009 and 2010, corresponding to the drought and flood seasons, respectively. The CH4 fluxes were determined using the static chamber technique. Environmental variables, such as depth, water temperature, pH, redox potential, dissolved oxygen and total dissolved solids were also measured. Diffusive and bubble flux presented an average value of 11.1 ± 13.5 mg CH4 m-2 d-1 e 275.9 ± 348.5 mg CH4 m-2 d-1, which is a value near those observed in other tropical flooded regions. Statistical t-tests have shown significant differences between drought and flood seasons (p ≤ 0.05). Diffusive fluxes represented about 87% of the total fluxes measured in drought. During the flood season there were more instances of bubble fluxes (77%). Statistical analysis (correlation and Principal Components Analysis) indicate that physical and chemical characteristics could affect methane fluxes. Diffusive fluxes correlated mainly with pH, redox potential and dissolved oxygen, which is in accordance with the increase of organic matter during flooding. Bubble fluxes measured during the drought season correlated mainly with water depth and temperature, pH and redox potential, which is an indication of an environment to suitable to the formation and liberation of the bubbles from sediment.
Allometric equations for the estimation of Jatropha curcas biomass Willian José Ferreira, Getúlio Teixeira Batista, Marcelo dos Santos Targa, Cristina Maria de Castro, Antônio Carlos Pries Devide, Lia Braz Floresta E Ambiente, 2015 RESUMO Este trabalho descreve estimativas de fitomassa e de estoque de carbono em cultivo de pinhão no Vale do Paraíba Paulista utilizando equações alométricas desenvolvidas com base em análise de regressão, que consideraram a fitomassa como uma variável dependente de medições dendrométricas de fácil obtenção na planta. As estimativas foram validadas por meio de método destrutivo direto, ponderando o corte de árvores de diferentes alturas e estruturas. Quando comparado com outros modelos, a equação linear Y = 1,3 (h²d), em que Y é a biomassa (kg), h é a altura (m) e d é a projeção da copa (m), apresentou resultados confiáveis e erros não significativos para árvores de até 3,2 m de altura. Para o espaçamento de 4 × 3 m foi avaliado que o estoque de matéria seca variou entre 0,5 e 6 Mg ha–1, enquanto o carbono armazenado na área pode chegar a 3 Mg C ha–1.
Jatropha's biodiesel in emerging countries: An alternative to regional development Revista Brasileira De Gestao E Desenvolvimento Regional, 2013
