State Of Bahia Research Articles

Multilayer time-variant network edges synchronization method

In this work, we propose a method for measuring synchronization between the edges of a pair of networks with connections that vary over time. The product of this method is an Incidence-Fidelity network, indicating the intensity of edge synchronization during a time interval. Two distinct validations were performed: in the first, we employed time-varying multilayer graphs with random connections to validate the algorithm; and in the second, we used the coupled Rössler oscillator to validate the method. In the algorithm validation, we compared the algebraically predicted results with the results obtained by using random networks. In the method validation, we used the coupled Rössler oscillator to generate time series representing the existence of two edges, one in each layer of the time-varying multilayer graphs. We assessed the relationship between the pre-defined coupling values and the achieved synchronization indices. In the application of our method, we considered time series of 17 years of climate data for the Normalized Difference Vegetation Index (NDVI) and precipitation for all municipalities in the state of Bahia, Brazil. To do so, we first obtained the individual layers of the multilayer network using a motif synchronization method. From the individual layers, we generated the Interlayer Incidence-Fidelity network. The obtained Interlayer Incidence-Fidelity network for the NDVI and precipitation pair reflects a connection pattern that incorporates the configurations of the individual layers. This is because synchronizations are primarily distributed in the more interconnected regions of the individual layers. The Interlayer Incidence-Fidelity networks generated by our method can identify synchronization patterns in the evolution of relationships between networks over time. This method presents a promising tool for evaluating synchronization between networks, generating a weighted network that quantifies the different levels of temporal synchronization for each edge in the networks.

Historical Territorialization of Mining Companies in The State of Bahia

Purpose: This article proposes to develop a territorial, historical, dynamic, open and plural analytical framework, referring to mining companies operating in the State of Bahia. Theoretical Framework: Through socioeconomic, ecological and historical analyses, we clarify multiple relationships between past and contemporary facts, based on the theoretical and conceptual perspectives of the cartographic exercise of New Social Cartography, developed by professor Alfredo Wagner. Method: The methodological instrument is New Social Cartography, through which we seek to highlight companies, agents of mineral exploration, highlighting phenomena inherent to their activities. Using methods that involve the leading roles of communities in the construction of knowledge. Results and conclusions: We observed that in Bahia, as, generally speaking, in Brazil, sophisticated models of mining colonization were established, with embryonic approvals from the Kandir Law, one of the legal provisions that must be urgently questioned and repudiated, in the name of freedom and lives. Research implications: Exposure and elucidation of global policies involving mining processes, presenting a worrying dynamism, with major ruptures and structural transformations (economic, political, cultural and mental). Originality/value: we contrast political categories and reified legal norms, demystifying them, presenting immeasurable losses inherited by human populations, their sociocultural frameworks, living organisms and the abiotic environments of ecosystems.

Assessment of the musculoskeletal discomfort scale for upper limb among workers in inner Brazil.

Work-related musculoskeletal disorders for upper limbs (UL-WMSDs) form a complex of occupational diseases common to many professions worldwide. UL-WMSDs are manifested in most cases by pain, resulting in musculoskeletal discomfort. This research aimed to evaluate the perception of musculoskeletal discomfort in workers from the interior of the Brazilian states of Alagoas and Bahia through the construction of a scale to assess musculoskeletal discomfort for upper limb. The discomfort assessment scale was constructed from self-reported pain symptoms by 420 workers from the inner regions of the Brazilian states of Alagoas and Bahia. The reliability and dimensionality of the collected data were analyzed by McDonald's Omega and exploratory factor analysis, respectively. Item Response Theory (IRT) was used to create parameters for the discomfort scale. The musculoskeletal discomfort metric was constructed from the workers' response with six levels (varying from minimum discomfort to maximum discomfort). At the lowest level of the scale, workers indicated symptoms in the shoulders and wrists were rare. At the highest level of the scale, daily pain symptoms are reported in all regions of the upper limbs. The shoulders are the last region to develop extreme pain symptoms. The metric was created to present satisfactory psychometric properties and capable measurement of the workers' level of musculoskeletal discomfort based on self-reported pain symptoms. Therefore, the metric can support measuring discomfort, contributing to decisions that improve a healthier occupational environment for the worker.

Unjust Winds of Change: The Politics and Narratives of Wind Farms in the Brazilian Northeast

Renewable energy is recognized as a cornerstone in achieving sustainable development globally, evidenced by international standards such as the UN Agenda 2030 as well as in nations energy policies globally. One of the front runners of the energy transition globally is Brazil, where wind energy has expanded substantially since the early 2000’s. Currently, the state of Bahia in North-Eastern Brazil is seeing the fastest expansions, a state that is characterised by its many traditional and Indigenous communities. Although wind energy is known for its positive sustainability aspects, conflicting wind energy narratives and politics are abundant in this region. The fast expansion of wind energy projects has caused socio-environmental conflicts due to land related conflicts and expulsion of traditional communities for the creation of wind energy parks. In this study, we apply document analysis to critically explore the multiple narratives surrounding wind energy expansion in the state of Bahia. This study shows that different actors frame the matter differently, showcasing that civil society and local perspectives are made invisible in policy documents and decision-making processes. Our results suggest that the dominant narrative of wind power as the most sustainable energy option excludes the contrasting perspectives, perpetuating exclusion and marginalisation of local communities as well as the environment that are directly impacted by the expansion of wind energy projects.

Low vaccine coverage and varicella outbreaks in Brazil − 2019-2022

The persistence of varicella outbreaks in Brazil has underscored the high concern with the low vaccine coverage in the last 4 years.Using publicly available data from the Brazilian Health System (SUS), this study analyzed varicella vaccine coverage and incidence trends from 2019 to 2022 in Brazilian States. Vaccine coverage decreased nationally in 2020, possibly influenced by the COVID-19 pandemic’s initial phase.In Bahia State, we have the persistence of varicella with an incidence rate of 3.0 cases per 100,000 inhabitants (higher incidence compared to other States) in 2023. Under 15 months children and young children (4–6 Years old) faced the highest risk, urging the importance of vaccination. Despite a monovalent varicella vaccine being available through Brazil’s National Immunization Program (NIP), Bahia fell short of achieving the ≥95 % disease control target for coverage.The study highlight the importance of vaccines to prevent some infectious diseases, as varicella, in poor tropical regions. Addressing vaccine hesitancy and misinformation, and augmenting awareness campaigns, are important to achieve and sustain high vaccine coverage over 80% as WHO guidelines to obtain a safe rate of protection for Brazilian population (Brazil's national immunization program has a target of 95% coverage).

Smoked meat and tradition: Popularity, notoriety, and quality perception

Debate about artisanal products has been on the rise, stemming from initiatives that seek to preserve local food traditions, while dealing with health concerns. In Brazil, smoked meat (Portuguese: carne de fumeiro) is a kind of smoked pork, typical in the town of Maragogipe, in the Northeastern state of Bahia, also popular in other regions. The objective of this study was to understand the popularity and notoriety of smoked meat, as well as the perception of sanitary quality, from the consumers’ perspective and practices. A descriptive study was carried out, which involved consumers residing in municipalities in Bahia, with data collection through an online questionnaire and data treatment by descriptive statistics and association tests. 378 consumers participated in the study, of which 48% purchased the product in supermarkets, highlighting flavor/aroma (25.7%) as the factor that most influenced the choice. As for consumption practices, participants reported consuming this meat at home or in bars and restaurants, the main ways of preparing it being fried (36.9%), roasted (22.5%) or as an ingredient in preparations (22.4%) such as farofa, feijoada and puree. Despite its popularity, 40.2% indicated that the product could pose some risk to health, with an association with the need for labeling (p < 0.027), as a way of guaranteeing the identification of origin, shelf life and inspection of the product. Participants also mentioned the possibility of risks present in meat, such as bacteria (30%) and chemical substances (20.1%). The findings show the popularity of smoked meat, expressing its potential as a geographical indication, while pointing out to the perception of sanitary risks, signaling the need for regulation and quality control, aiming to promote its notoriety and market expansion.

Reconstruction of pedagogical practice for the insertion of refugee students in regular classes

This article is about the insertion of refugees into regular classes and aims to reflect on the pedagogical practice based on this insertion. It was used qualitative and exploratory research with refugee teachers and students linked to a school located in the State of Bahia. An operational discussion group was used for data collection and the softaware WebQDA was used for analysis. The results showed that teachers demonstrated great effort in seeking collective and planned ways of working with refugees and reported the measures adopted to try to adapt the activities.

Assessment of nutritional status of soybean by the DRIS method in western of Bahia State

ABSTRACT Increasing soybean yield in the MATOPIBA region can be attributed to fertility management, which is crucial to achieving maximum agronomic efficiency. Therefore, the proper management begins with the assessment of plant nutrition. This study aimed to evaluate soybean nutritional status in western Bahia using the Diagnosis and Recommendation Integrated System (DRIS). Database comprised 153 samples from commercial fields located in the research area. To carry out the evaluation using the DRIS method, the database contained information on nutritional levels and leaf productivity of the sampled areas. Database was divided into high-productivity populations (reference population) and low-productivity populations, based on the inflection point value of the cumulative cubic function of yield. The DRIS method allowed for evaluating the potential response to fertilization; however, this method was inefficient in recommending fertilizer doses in both subpopulations. For the sufficiency levels proposed by DRIS, the nutrients N, K, Ca, Mg and S had their maximum and minimum limits reduced, while Cu, Fe and Zn had their ranges of sufficiency expanded, when compared with ranges proposed by other authors. In addition, Zn and Mn were more limiting due to lack for the high-yield subpopulation, and P and Mn for the low-yield subpopulation. The most limiting nutrients due to excess were P and Zn for the high-yield, while K and S were limiting for the low yield subpopulation.

A reassessment of the historical fossil findings from Bahia State (Northeast Brazil) reveals a diversified dinosaur fauna in the Lower Cretaceous of South America

ABSTRACT Supposed dinosaur remains were collected between 1859 and 1906 in the Lower Cretaceous Recôncavo Basin (Northeast Brazil). Since these materials remained undescribed, and most were considered lost. Recently, some of these historical specimens were rediscovered in the Natural History Museum of London, providing an opportunity to revisit them after 160 years. The specimens come from five different sites, corresponding to the Massacará (Berriasian-Barremian) and Ilhas (Valanginian-Barremian) groups. Identified bones comprise mainly isolated vertebral centra from ornithopods, sauropods, and theropods. Appendicular remains include a theropod pedal phalanx, humerus, and distal half of a left femur with elasmarian affinities. Despite their fragmentary nature, these specimens represent the earliest dinosaur bones discovered in South America, enhancing our understanding of the Cretaceous dinosaur faunas in Northeast Brazil. The dinosaur assemblage in the Recôncavo Basin resembles coeval units in Northeast Brazil, such as the Rio do Peixe Basin, where ornithopods coexist with sauropods and theropods. This study confirms the presence of ornithischian dinosaurs in Brazil based on osteological evidence, expanding their biogeographic and temporal range before the continental rifting between South America and Africa. Additionally, these findings reinforce the fossiliferous potential of Cretaceous deposits in Bahia State, which have been underexplored since their initial discoveries.

Zoning the occurrence of Thyrinteina arnobia in eucalypts and its relationship with the spectral behaviour of canopies and soil attributes

This study aimed to outline areas at risk of the occurrence of eucalypt defoliator caterpillars and their relationship with variations in the spectral behaviour of canopies and soil attributes. The study was conducted in three eucalypt plantation areas of the Bracell Bahia company, located in the state of Bahia, Brazil. Initially, the spatiotemporal distribution of climatic variables and water balance was evaluated. Subsequently, using geographic information systems and fuzzy logic, occurrence risk zoning was developed for defoliator caterpillars associated with different classes of eucalypt crop aptitude. After defining the areas at risk of pest occurrence, specific plots in different aptitude classes were selected to assess, intra-plot, characteristics that can increase or reduce the risk of defoliator caterpillar attack and damage intensity, as well as the plant’s ability to recover after a controlled outbreak. Information on the spectral behaviour of the canopies and the availability of nutrients in the soil was used in this step. Zone modelling enabled the delineation of areas and periods at a higher risk of pest occurrence for the different aptitude conditions of the eucalypt crop. The intra-plot methodology proved that the class of eucalypt crop aptitude with the greatest potential for recovering vegetative vigour 60 days after caterpillar damage was the apt class. This result can be attributed to K limitation and the high spatial resolution of the PlanetScope orbital sensor.

Our Lady of the Workboats: Solidarity and Spirituality on the Bay of All Saints

At the end of Jorge Amado’s Mar Morto (1936), a sailor’s grieving widow defies a fate that seems inevitable. Instead of resigning herself to a life of precarity, she takes command of her husband’s boat. In doing so, she aligns herself with Iemanjá, a sea deity from the Afro-Brazilian religion of Candomblé. This essay takes this episode, and Amado’s novel, as its intellectual point of departure. Joining literary studies with maritime social history and nautical science, it charts the physical characteristics and cultural histories of the Baia de Todos os Santos in the Brazilian state of Bahia, which influenced Mar Morto on the level of form and theme. In the spiritually charged home waters of Amado and his characters, ocean literacy is both locally specific and diasporic: intertwined with African-descended cosmologies and ongoing struggles for sovereignty and freedom. By attending to these forms of what Justin Dunnavant (riffing on Katherine McKittrick) calls “livingness on the sea,” this essay models a maritime literary studies that recovers gendered and racialized ocean literacies and demonstrates the importance of local ways of knowing the ocean to the global literature of the sea. It is drawn from a book project tentatively titled “Atlantic Shapeshifters: Sea Literature’s Fluid Forms.”

Yeast Diversity in Honey and Pollen Samples from Stingless Bees in the State of Bahia, Brazil: Use of the MALDI-TOF MS/Genbank Proteomic Technique.

(1) Background: The identification of microorganisms includes traditional biochemical methods, molecular biology methods evaluating the conserved regions of rRNA, and the molecular biology of proteins (proteomics), such as MALDI-TOF MS mass spectrometry. This work aimed to identify the biodiversity of yeasts associated with stingless bee species' honey and pollen, Melipona scutellaris, Nannotrigona testaceicornes, and Tetragonisca angustula, from the region of São Gonçalo dos Campos-Bahia (BA) state, Brazil. (2) Methods: Cellular proteins were extracted from 2837 microbial isolates (pollen and honey) and identified via MALDI-TOF MS. The identified yeast species were also compared to the mass spectra of taxonomically well-characterized reference strains, available from the National Center of Biotechnology Information (NCBI) database. (3) Results: Nine yeast species were identified: Candida maltosa, Candida norvegica, Kazachstania telluris, Schizosaccharomyces pombe, Scheffersomyces insectosus, Meyerozyma guilliermondii, Brettanomyces bruxellensis, Kazachstania exigua, and Starmerella lactis-condensi. Nannotrigona testaceicornes pollen had the highest number of yeast colonies. The yeasts Brettanomyces bruxellensis and Kazachstania telluris showed high populations in the samples of Nannotrigona testaceicornes and Melipona scutellaris, respectively. This work shows that there is some sharing of the same species of yeast between honey and pollen from the same beehive. (4) Conclusions: A total of 71.84% of the identified species present a high level of confidence at the species level. Eight yeast species (Candida maltosa, Candida norvegica, Kazachstania telluris, Schizosaccharomyces pombe, Scheffersomyces insectosus, Meyerozyma guilliermondii, Kazachstania exigua, and Starmerella lactis-condensi) were found for the first time in the samples that the authors inspected. This contributes to the construction of new knowledge about the diversity of yeasts associated with stingless bee products, as well as to the possibility of the biotechnological application of some yeast species.

Recent changes in growth trajectories: a population-based cohort study of over 5 million Brazilian children born between 2001 and 2014

There is limited evidence on recent trends in childhood growth trajectories in Low-/middle-income countries. We investigated how age-trajectories for height and Body Mass Index (BMI) have changed among Brazilian children born in two different time periods after2000. We used a population-based cohort (part of the "Cohort of 100-Million Brazilians") created by the linkage of three Brazilian administrative databases: the Cadastro Único of the Federal Government, the National System of Live Births and the National Nutritional and Food Surveillance System. We included longitudinal data on 5,750,214 children who were 3 to <10 years of age and born between 2001 and 2014 (20,209,133 observations). We applied fractional polynomial models with random-effects to estimate mean height and BMI trajectories for children. Compared to children born in 2001-2007, the cohort born in 2008-2014 were on average taller, by a z-score of 0.15 in boys and 0.12 in girls. Their height trajectories shifted upwards, by approximately 1cm in both sexes. Levels of BMI increased little, by a z-score of 0.06 (boys) and 0.04 (girls). Mean BMI trajectories also changed little. However, the prevalence of overweight/obesity increased between cohorts, e.g., from 26.8% to 30% in boys and 23.9%-26.6% in girls aged between 5 and <10 years. An increase of 1cm in mean height of Brazilian children during a short period indicates the improvement in maternal and child health, especially those from low-income families due to the new health and welfare policies in Brazil. Although mean BMI changed little, the prevalence of child overweight/obesity slightly increased and remained high. This work was supported by National Council for Scientific and Technological Development - CNPq; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES; National Institute for Health Research (NIHR) Great Ormond Street Hospital Biomedical Research Centre; Society for the Study of Human Biology; Fundação de Amparo à Pesquisa do Estado de Minas Gerais - FAPEMIG; Departamento de Ciência e Tecnologia da Secretaria de Ciência, Tecnologia, Inovação e Complexo da Saúde do Ministério da Saúde - Decit/SECTICS/MS. The study also used resources from the Centre for Data and Knowledge Integration for Health (CIDACS), which receives funding from the Bill & Melinda Gates Foundation, the Wellcome Trust, the Health Surveillance Secretariat of the Ministry of Health and the Secretariat of Science and Technology of the State of Bahia (SECTI-BA).

The radiation of nodulated Chamaecrista species from the rainforest into more diverse habitats has been accompanied by a reduction in growth form and a shift from fixation threads to symbiosomes.

All non-mimosoid nodulated genera in the legume subfamily Caesalpinioideae confine their rhizobial symbionts within cell wall-bound "fixation threads" (FTs). The exception is the large genus Chamaecrista in which shrubs and subshrubs house their rhizobial bacteroids more intimately within symbiosomes, whereas large trees have FTs. This study aimed to unravel the evolutionary relationships between Chamaecrista growth habit, habitat, nodule bacteroid type, and rhizobial genotype. The growth habit, bacteroid anatomy, and rhizobial symbionts of 30 nodulated Chamaecrista species native to different biomes in the Brazilian state of Bahia, a major centre of diversity for the genus, was plotted onto an ITS-TrnL-F-derived phylogeny of Chamaecrista. The bacteroids from most of the Chamaecrista species examined were enclosed in symbiosomes (SYM-type nodules), but those in arborescent species in the section Apoucouita, at the base of the genus, were enclosed in cell wall material containing homogalacturonan (HG) and cellulose (FT-type nodules). Most symbionts were Bradyrhizobium genotypes grouped according to the growth habits of their hosts, but the tree, C. eitenorum, was nodulated by Paraburkholderia. Chamaecrista has a range of growth habits that allow it to occupy several different biomes and to co-evolve with a wide range of (mainly) bradyrhizobial symbionts. FTs represent a less intimate symbiosis linked with nodulation losses, so the evolution of SYM-type nodules by most Chamaecrista species may have (a) aided the genus-wide retention of nodulation, and (b) assisted in its rapid speciation and radiation out of the rainforest into more diverse and challenging habitats.

Description of nine new species of the Neotropical spider genus Epicratinus Jocqué &amp; Baert, 2005 (Araneae: Zodariidae) from Brazil

Nine new species of the Neotropical spider genus Epicratinus Jocqué &amp; Baert, 2005 are described. Epicratinus includes now 25 species, all with male and female descriptions. An identification key for all species of the genus and maps for new species. The following nine new species are described: E. yoda sp. nov. from the state of Alagoas, Bahia, Paraíba and Pernambuco; E. temuerai sp. nov. from the state of Bahia and Mato Grosso; E. arlequina sp. nov. and E. maozinha sp. nov. from the state of Minas Gerais; E. leia sp. nov., E. baraka sp. nov. and E. smeagol sp. nov. from the state of Bahia; E. raiden sp. nov. from the state of Mato Grosso; E. luke sp. nov. from the state of Espírito Santo, all from Brazil.

Cayenniola albaserrata n. sp., a geographical relict from a Brazilian hotspot of subterranean biodiversity and the first troglobitic Priodesmini (Polydesmida: Chelodesmidae: Chelodesminae)

A new troglobitic species of Chelodesmidae, Cayenniola albaserrata n. sp., from the Água Clara cave system, Caatinga Domain, Bahia, Brazil is described. The new species is only the sixth known troglobitic chelodesmid, the first troglobitic species in the Priodesmini, and the first member of the tribe recorded from the state of Bahia. Unique among the Priodesmini, male C. albaserrata n. sp. possess greatly elongated pre-gonopodal tarsal claws and differ from the only congener, Cayenniola styliger (Jeekel, 1963), by a combination of gonopodal and somatic characters including classical troglomorphic traits such as a nearly unpigmented body and remarkably long antennae, legs, and tarsal claws. Cayenniola styliger is only known from the type locality in the Amazon rainforest of coastal French Guiana, suggesting that C. albaserrata n. sp. may represent a relictual species from the Caatinga Domain of Brazil. We provide ecological notes and evaluate the potential threats to the habitat of C. albaserrata n. sp., considering both the subterranean environment and the surrounding areas.

El video en la investigación de dos danzas amefricanas: la sambay la rumba

Two audiovisual works explore the role of women in the matrilinealtransmission of samba and rumba, generational changes, and the relationshipbetween men and women revealed in the body movements. The first case studyfollows the Jelita family, which hails from Saubara in the state of Bahia, Brazil,and the second, a family headed by a woman named Lidia in Trinidad, Cuba.A supplementary text lays out the methodology used for the study, the culturaland historical background of the two cases, and an analysis of women’s role inperpetuating these female body memories and the places for their transmission.

First record of Peropteryx leucoptera (Chiroptera, Emballonuridae) for the Caatinga of Northeastern Brazil and additional records for the Amazon and Atlantic Rainforest

Abstract Peropteryx leucoptera is a widespread species in the Neotropics but with a disjunct distribution in Northern South America and a separated population in the Atlantic Forest of Northeastern Brazil. Here we present new records of this species for Northeastern Brazil, the first records for the Caatinga biome and for the states of Bahia and Rondônia. These new records represent a major range extension and establishes a new southern limit of occurrence for the species. We also examined and provide measurements of other specimens and present an updated map with the distribution of P. leucoptera in South America.

Validation of the CHIRPS precipitation estimate in a Brazilian Cerrado area

Measuring and understanding precipitation over space and time is essential for several human activities. Satellite remote sensing products are presented as an alternative to the low-density network of pluviometric stations. Thus, the objective of the present study was to evaluate precipitation estimates obtained by the Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) product, from 1981 to 2020, in the Rio Grande basin, Bahia state, Brazil. This watershed has about 75,000 km², is inserted in one of the most active agricultural frontiers in the world and has undergone significant changes in land use and occupation and changes in rainfall patterns. We compared data from 11 series of conventional (Hidroweb) and CHIRPS-derived surface stations on monthly and seasonal scales, using statistical metrics – relative bias (BIAS), correlation coefficient (R²), mean error (ME), and mean squared error (RMSE) – and categorical – correct proportion (PC), probability of detection (POD), frequency bias index (FBI), false alarm (FAR). Results showed that the CHIRPS precipitation estimates provided good responses compared to the data observed in conventional surface meteorological stations. Furthermore, CHIRPS products accurately detected rain with an excellent capacity to represent the space-time precipitation variation.

Integration of Remote Sensing and Aerogeophysical Data Applied in the Geological Characterization of the Ipueira-Medrado Segment, Andorinhas/BA

The segment of the Ipueira-Medrado mines constitutes two of the main chromium mines operated by Companhia Ferro-ligas da Bahia (Ferbasa). The research area is located in the municipality of Andorinhas, in the north center of the state of Bahia, in the Piemonte Norte Do Itapicuru region. Therefore, the main objective of the present work is the use of Remote Sensing and Aerogeophysics data to elaborate the geological map of the study area and highlight new target areas for mineral research. The Digital Image Processing (PDI) stage was carried out in an environment in the ENVI® 5.3 software for the scenes of the optical Alos and radar images, Palsar. The treatment of magnetic and radiometric data was carried out in the environment of the software Oasis Montaj 9.10 by Geosoft®. In the Geographic Information System (GIS) platform of ArcGis 10.7.1®, multisource data was integrated. This integration supported the screening of information from local lithologies and the identification of four lithological units: Sienito Itiúba, Santa Luz Unit, São Bento Unit and Jacurici Valley Complex. In this last unit, a combined analysis between Map Algebra and Fuzzy logic was applied to all input raster data, in order to mark out a zoning of potential areas for the occurrence of mafic-ultramafic rocks. In the end, a good relationship was noted between the results obtained with models that already exist in the bibliography. In view of this, the application of the methodology developed in this research requires more robustness for the local geological knowledge, as it will also help in the development of new mineral research endeavors.