Ardemírio de Barros Silva's research while affiliated with Universidade Estadual de Feira de Santana and other places
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Publications (6)
A variability of soil elements has been studied by environmental modeling techniques using geostatistics. This can be an essential tool for the development of projects related to interpolation methods and statistical methodologies to validate the correlation between soil characteristics. In this perspective, this work aims to model the natural chem...
The increase of bibliometric surveys in the measurement of scientific activity has favored the development of important indicators. In this perspective, we intend to analyze the publications in scientific journals on spectroradiometry and soils, geostatistics and soil on a 10-year time scale. Therefore, the SCOPUS platform was used for the analysis...
A ocorrência de incêndios na vegetação em áreas protegidas constitui uma das graves ameaças à conservação da biodiversidade nestas áreas. O Parque Nacional da Chapada Diamantina (Bahia) se inclui entre as Unidades de Conservação com maior quantidade de focos de incêndios do Brasil. Neste sentindo, a presente pesquisa propõe-se a identificar as área...
O presente trabalho tem como objetivo avaliar as concentrações de metais pesados (Cd, Pb, Cu, Cr, Mn, Ni e Zn), na água do açude público, localizado em área de influência do lixão no município de Teofilândia-BA. Foram determinados 6 pontos amostrais e realizada a coleta de água nos períodos pré-chuva (maio), pós-chuva (junho) e seco (novembro) de 2...
New technologies have enabled the dissemination of maps. Maps are commonly produced either by sophisticated image processing techniques or by more conventional methods. Therefore, defining the limits of the use of maps by measuring their associated errors is essential. There are several sources of such errors, which can be related to temporal, posi...
The use of Remote Sensing techniques to suport the identification of burned areas can be useful to find the degree of severity and extention of the affected areas by fire. In order to identify burned areas the Normalized Burn Ratio (NBR) and the Normalized Difference Vegetation Index (NDVI) are used to classify satellite images from the sensor band...
Citations
... We arrange the data in a Confusion Matrix. And, calculated the Tau and Geographic Simultaneity (GS) (SILVA et al., 2017) indices, which were classified according to Silva (2018). The methodological steps are shown in Figure 2. ...
... O conhecimento sobre a variabilidade dos atributos dos solos tornou-se uma questão estratégica, tanto do ponto de vista agrícola (com o objetivo de aumentar a eficiência e produtividade), quanto do ponto de vista ambiental (para avaliar os efeitos da antropização e da degradação do solo). Nessa perspectiva, a geoestatística tem desempenhado um papel fundamental na avaliação da variabilidade espacial de elementos nos solos (Ortiz, 2008;Silva, Lima, 2009;Manzione, Zimback, 2011;Zonta et al., 2014;Martins, Fernandes, 2017;Santos et al., 2019). ...
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... O s i n c ê n d i o s n a v e g e t a ç ã o s ã o considerados como uma das maiores causas de danos à conservação da biodiversidade e da geodiversidade, de modo a, frequentemente, constituírem uma perturbação a ecossistemas, principalmente em regiões savânicas e campestres (FRANCA-ROCHA et al. 2017;MIRANDA et al., 1996;. A depender da sua frequência e intensidade, os episódios de incêndio podem implicar na redução da densidade arbórea de espécies lenhosas, na perda da diversidade, bem como, na capacidade de rebrota, diminuição da altura e diâmetro dos organismos (FIEDLER et al., 2004;SILVA et al., 2011). ...
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... Several threats afflict these important diversity centres, such as the progression of agriculture, mining, fires, pasture, deforestation for wood removal, ornamental plant collection and touristic overexploitation (Harley 1995, Conceição 2000, Franca-Rocha et al. 2005. The effect of fire on Lentibulariaceae species, which are often overlooked in surveys and studies that address fires and regeneration of vegetation, is still unknown (Neves & Conceição 2010, Leite et al. 2017. The main fires in the Protected Areas of the Chapada Diamantina highlands are anthropogenic, being used in agriculture and livestock by local inhabitants for the renewal of pastures and cleaning of crop residues (ICMBio 2007). ...
