IESA - Artigos publicados em periódicos

URI Permanente para esta coleçãohttp://200.137.215.59//handle/ri/1395

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Cladosporium from caves of the Brazilian savannah (Cerrado) and the description of six new species
(2026) Oliveira, Pedro Henrique Félix de; Prazeres, José Fredson da Silva Alves dos; Ferro, Layanne de Oliveira; Antunes, Ana Clara Angelo; Lima, Caroline Ferreira; Neves, Dominnyke Slater Santos; Fonseca, Emily Oliveira; Miranda, Lorena Souza; Momoli, Renata Santos
Caves are important but understudied reservoirs of fungal diversity, particularly for genera such as Cladosporium (Cladosporiales, Dothideomycetes). This study aimed to characterise the richness of Cladosporium species from six caves in the Brazilian savannah (Cerrado) using an integrative approach combining morphology and multi-locus phylogenetic analyses (ACT, ITS, RPB2, TEF1-α, and TUB). To improve species recognition in Cladosporium, selected ex-type strains were studied, for which RPB2 and TUB barcodes were also sequenced. Species were delimited using morphology and phylogenetic inferences, supplemented by the pairwise homoplasy index (PHI) test to evaluate species boundaries. Twenty-three species were identified among 94 Cladosporium isolates. The polyphasic approach resulted in the description of six new species: five in the C. cladosporioides complex (C. carsi, C. lacerdae, C. mambaiense, C. nogueirae, and C. propiciense) and one in the C. sphaerospermum complex (C. mesquitapaivae). Additionally, analyses based on morphology, genealogical concordance phylogenetic species recognition (GCPSR), and the PHI test resulted in the synonymisation of C. ribis and C. speluncae under C. bambusicola, C. brigadeirense under C. puris, and C. marinisedimentum under C. sphaerospermum. Among the previously known species identified, 11 represent new records for cave environments, with C. bambusicola being the most frequent (29.17%). These findings substantially expand the known diversity of Cladosporium in Neotropical caves, highlighting the Brazilian Cerrado as a hotspot of mycodiversity. Furthermore, ACT, RPB2, TEF1-α, and TUB are proposed as the primary phylogenetic barcodes for distinguishing closely related Cladosporium species, particularly within the C. cladosporioides complex. This study further emphasises the necessity of using a polyphasic approach to achieve accurate taxonomic resolution among Cladosporium species, trace their distribution in caves, and help to understand their ecology.
Long term evolution of an escarpment in a tableland landscape (Serra Geral de Goiás, Brazil): insights from in situ-produced cosmogenic nuclides
(2025) Cherem, Luis Felipe Soares; Siame, Lionel Louis; Zancopé, Márcio Henrique de Campos; Bueno, Guilherme Taitson; Braucher, Régis; Godard, Vincent; Leanni, Laetitia; Guillou, Valéry
Topographic escarpments are striking geomorphic features shaping the Earth's surface, often forming distinct water divides in tectonically stable regions. This study presents a new analysis of the geomorphic evolution of the Serra Geral Escarpment in the State of Goiás, Central Brazil, using in situ-produced cosmogenic nuclides. The objective is to quantify Quaternary denudation rates associated with different geomorphic compartments of this regional-scale escarpment by measuring the concentrations of 10Be, 26Al, and 36Cl in river-borne sediments and bedrock outcrops. The results reveal three distinct denudation regimes: the summit surface of the Western Bahia Plateau (7.4 ± 0.2 m Myr, and climate in shaping escarpments within
Goiás para além das chapadas e planaltos: diversidade e beleza na Geomorfologia do Brasil central
(2025) Salgado, André Augusto Rodrigues; Bueno, Guilherme Taitson; Zancopé, Márcio Henrique Campos; Travassos, Luiz Eduardo Panisset
This study discusses the geomorphological diversity of Goiás through five landscapes of high scenic, scientific, and educational value: the Araguaia River in Aruanã, Serra Dourada, Chapada dos Veadeiros, the non-traditional karst of Paraúna, and the traditional karst system of São Domingos/Serra Geral de Goiás. The text shows that the state, often reduced to the image of plateaus and agricultural areas, is characterised by great morphological and morphogenetic complexity. Using a descriptive-analytical approach, it articulates geology, geomorphology, hydrography, human uses, and environmental impacts, highlighting fluvial, mountain, plateau, and karst processes. It concludes that these landscapes have high geomorphological and geoheritage value, demanding further research, geoconservation, and scientific outreach. The text argues for their recognition in territorial management and geoscientific education in Central Brazil.
Five decades of morphological evolution and hydro-sedimentary interactions in a fluvial confluence in the Brazilian Cerrado
(2025) Assis, Pâmela Camila; Zancopé, Márcio Henrique de Campos; Siqueira, Luan Ferreira; Macedo, Hudson de Azevedo; Bayer, Maximiliano
River confluences are zones of intense hydro-sedimentary interaction whose morphological dynamics remain poorly understood in tropical environments, especially in the Cerrado biome. This study investigates the morphodynamic transformations at the confluence of the Araguaia and Vermelho Rivers in Aruanã (Goiás, Brazil), over 51 years (1972–2023). The study integrates remote sensing data, bathymetry, and acoustic profiling. Riverbanks, thalwegs, sandbars, junction angle, and channel width were mapped, along with the calculation of hydraulic and geomorphological parameters. The results reveal high planimetric mobility, with junction displacement of up to 2.5 km, a 27° reduction in the confluence angle, and intense fluctuations in the configuration and area of fluvial bars. The confluence was characterized by a retreat between the 1970s and 2000 due to the erosion of part of the floodplain; then an advance of the confluence was observed in the period from 2000 to 2023, driven by formation and consolidation of the tributary bar. The dominance of the Araguaia River influences the scour zone position and thalweg configuration. Differential bank erosion was observed, conditioned by the morpho-sedimentary units of the floodplain, as well as colonization of the tributary bar by vegetation, promoting temporary stabilization. It is concluded that the adjustments in the confluence morphology result from an interaction between the seasonal hydro- sedimentary regime, bank lithology, and migration of fluvial forms, highlighting a dynamic system that is sensitive to changes in land use and land cover.
A fenomenologia em Gaston Bachelard como poética da paisagem
(2025) Silva, Valéria Cristina Pereira da
In Gaston Bachelard's philosophy, material elements transform into landscape poetry through two fundamental keys: the sociocultural imaginary and the lived space. Reverie is the path to discovering new images that align with memory and archetypal images, creating a dynamic of resonance and impact. Phenomenology, meanwhile, serves as the pathway to understanding landscape poetry in depth, where the landscape and the image converge in meaning through the creator's imagination. Perception and memory subordinate themselves as substances of reverie, granting the landscape the status of an entity. This entity is, above all, a manifestation of an extraordinary being. By exploring the poetics of water, earth, air, fire, and the home, Bachelard reveals the imaginary, the symbolism, and his own lived space. In this way, I aim to demonstrate how these elements transcend and redefine the meaning of landscape.
Classificação de terras no sistema de capacidade de uso, na sub-bacia Coimbra, Reserva Privada de Desenvolvimento Sustentável Legado Verdes do Cerrado, Goiás
(Universidade Federal de Goiás, 2025-12-20) Momoli, Renata Santos; Araujo, Victor Marcel Rodrigues
Sustainable land use minimizes agricultural impacts on the environment and its adoption is based on integrated analysis of morphological, physical, chemical, relief and water flow attributes. This study sought to group areas of the same level of potential and fragility in the Legacy Verdes do Cerrado, Goiás, using the System of Land Use Capacity Classes, which classifies the lands in increasing order of limitations and fragilities, from I to VIII. 13 points were evaluated for depth, texture, fertility, slope, vegetation and erosion in Oxisols, Inceptisols, Plinthic Oxisols and Lithic Entisols. Among the identified classes II, III, IV, V, VI and VIII, predominated classes III (36.6% - annual cultivation only associated with complex management practices) and VIII (32.9% - unsuitable for agriculture). The fragilities and use restrictions were related to erosive processes due to slope and soil texture, requiring medium complexity measures for prevention and mitigation.
Produção de comida: a CSA artigo quinto enquanto movimento de (Re)existência ao agrohidronegócio
(Universidade Federal de Goiás, 2025-04-20) Mendonça, Marcelo Rodrigues; Soares, Bárbara Victória da Silva
El artículo presenta la Comunidade que Sustenta a Agricultura (CSA) Artigo Quinto en Palmeiras de Goiás/GO como un movimiento de (Re)Existencia, concebido a partir de las actividades productivas y de comercialización que garantizan la producción de alimentos por campesinos asentados por la reforma agraria. La producción de alimentos de la CSA Artigo Quinto es relevante para la soberanía alimentaria e incorpora habilidades y conocimientos, prácticas socioculturales que espacializan nuevas territorialidades contrahegemónicas, en territorios hegemonizados por el agrohidronegocio. A través de una investigación cualitativa y cuantitativa, se realizaron búsquedas bibliográficas, trabajo de campo, observaciones y anotaciones sobre las acciones construidas por los pobladores en el CSA. En las últimas décadas, la modernización territorial hizo que las prácticas tradicionales se perdieran en medio del avance de las corporaciones capitalistas, bajo la mirada complaciente del Estado y, muchas veces, con abundantes recursos públicos. Finalmente, se observaron las prácticas entendidas como movimiento de (Re)Existencia que posibilitan la preservación ambiental, la nutrición alimentaria, la producción y comercialización de alimentos en circuitos cortos, asegurando trabajo, renta y la reproducción de la vida campesina.
Variabilidade, tendências e eventos extremos de precipitação em Goiânia - GO
(Universidade Federal de Goiás, 2025-04-20) Nascimento, Diego Tarley Ferreira; Oliveira, Hernane Fernandes Sousa de
Although Goiânia is a relatively young and medium-sized city, it has faced recurring problems caused by both excess and scarcity of rainfall. Considering the widespread, accelerated, and historically unprecedented climate change, this study analyzed the variability, trends, and occurrence of extreme rainfall events in Goiânia between 1961 and 2023. By using daily and monthly data compiled from the National Meteorological Institute’s conventional station, this study investigated the behavior of annual, seasonal, and monthly rainfall variability and evaluated trends and the occurrence of extreme events based on statistical indices. The data points to a usual concentration of rainfall in seven months and an inherent annual and seasonal variability in rainfall, which is altered from time to time in exceptionally dry or rainy years. There is also the possibility of a greater occurrence of extreme daily events and an increase in the period of drought, leading to recurring problems for the population.
Desafios e possibilidades de aplicação da cartografia social enquanto linguagem nos cursos de geografia
(Universidade Federal de Goiás, 2025-12-09) Souza, Lorena Francisco de; Freitas, Winicius Alves de
Este artículo tiene como objetivo discutir el uso de la Cartografía Social en los planes de enseñanza de Cartografía en los cursos de licenciatura en Geografía en las instituciones de educación superior brasileñas. A partir de los datos producidos por la investigación colectiva del Grupo de Estudios e Investigaciones de Cartografía para Escolares (GECE), mediante entrevistas con docentes, observamos pocas inclusiones de la Cartografía Social. En este sentido, buscamos comprender las principales dificultadespara el debate sobre la cartografía social como lenguaje en la formación inicial de profesores en las instituciones de educación superior de Brasil. Las preguntas dirigidas a los docentes versaron sobre la percepción de las perspectivas cartográficas no euclidianas en la formación del profesor de Geografía y en qué contexto se evidencian en sus clases.
A disciplina cartografia escolar nos cursos de formação de professores em geografia no Brasil: contexto, desafios e perspectivas
(Universidade Federal de Goiás, 2025-12-08) Richter, Denis; Moraes, Loçandra Borges de; Bueno, Míriam Aparecida
The article presents the results of a collective research project developed by the Grupo de Estudos e Pesquisas em Cartografia Escolar (GECE), entitled “The School Cartography Course in Geography Programs in Brazil and Chile: An Analysis of Teacher Education.” The aim of this text is to understand how School Cartography has been organized and developed, specifically within Geography teacher education programs in Brazil. The investigation adopts a qualitative approach, grounded in collaborative research, and uses as data production instruments the analysis of course syllabi, interviews with instructors, and the implementation of an extension course structured in three thematic modules: Social Cartography, Inclusive Cartography, and Geotechnologies applied to the teaching of Geography. The results highlight the growing presence of the discipline in curricula, although marked by regional and theoretical–methodological asymmetries, as well as the need to strengthen the integration between theory, practice, and formative experiences. The interviews show that instructors recognize School Cartography as an essential component for the development of spatial and geographical thinking, while also pointing to the persistence of structural and pedagogical challenges. The activities carried out in the extension course demonstrated the potential of contextualized and collaborative learning as a strategy for didactic experimentation. It is concluded that School Cartography is consolidating itself as a strategic formative field in Geography teacher education, whose expansion depends on consistent curricular guidelines and on the articulation between teaching, research, and extension.
Ecoturismo e agropecuária no cerrado goiano: potencialidades, desafios e contradições no município de Caiapônia (GO)
(Universidade Federal de Goiás, 2025-08-20) Barros, Juliana Ramalho; Sales, Ana Luisa Lopes; Aguiar Junior, Paulo Roberto Ferreira de
This article analyzes the interactions between ecotourism and agriculture in the municipality of Caiapônia (GO), located in the Cerrado biome, with a focus on the tensions between environmental conservation and the economic use of the territory. Based on a qualitative approach and a case study methodology, the research combines bibliographic review, document analysis, cartographic production, and field observations. The study addresses the challenges of transforming natural potential into a sustainable tourism product, highlighting the lack of planning, the informality of tourism practices, and the expansion of agribusiness as limiting factors. The analysis reveals contradictions between the discourse of sustainability and practical reality, emphasizing the importance of public policies, community participation, and adequate infrastructure for strengthening ecotourism as an alternative for territorial development.
Fronteira Brasil-Guiana Francesa: interações espaciais, cidades gêmeas e exploração petrolífera
(Universidade Federal de Goiás, 2025-10-11) Carneiro Filho, Camilo Pereira; Leal, Laura Beatriz Silva
Between moments of approximation and separation, over time, the Brazil-French Guiana border and its security and defense functions began to coexist with others such as integration and cooperation. However, the period of the COVID-19 pandemic (March 11, 2020 to May 5, 2023) highlighted several obstacles in the relationship between Brasília and Paris, which involve the completion of the BR-156 highway, the regularization of traffic across the Franco-Brazilian Binational Bridge, among other points. Thus, the present articlepresents an analysis of the spatial interactions on the border between Brazil (Amapá) and France (French Guiana), contemplating the consolidation of the border, the dynamics of the twin cities and the expectation ofoil exploration on the north coast of Oiapoque. In terms of methodology, this paper constitutes a qualitative research, based on bibliographic analysis, from the perspective of Geopolitics and Political Geography, enriched with fieldwork and thematic cartography.
Global 30-m annual median vegetation height maps (2000–2022) based on ICESat-2 data and Machine Learning
(2025) Hunter, Maria O'Healy; Parente, Leandro Leal; Yu-feng, Ho; Bonannella, Carmelo; Ferreira Junior, Laerte Guimarães; Morton, Douglas Christopher; Consoli, Davide; Sloat, Lindsey
Accounting for alternation in temporal quality analysis in MapBiomas Brazil
(2025) Silva, Ana Paula Matos e; Hunter, Maria O'Healy; Pontius Jr., Robert Gilmore; Baumann, Luis Rodrigo Fernandes; Parente, Leandro Leal; Ferreira Junior, Laerte Guimarães
Land use and land cover maps are an important resource for understanding interactions between humans and their environment across space and time with current mapping efforts often spanning upwards of 20 years. We present here a new method for a robust assessment of land cover transitions over time and apply this methodology to the yearly MapBiomas land use land cover maps of Brazil spanning 1985–2022. Based on a reference sample of 85,152 points, we find MapBiomas to have limited accuracy as an indicator of yearly land use change, but consistent over the full mapping period. Alternation, a newly defined error component, captures the number of land use transitions a location experiences throughout time. It is the primary reason for differences in estimates of annual change and is 4.6 times more frequent in the MapBiomas product than reference data. Differences in alternations are particularly prevalent in transitions from pasture to savanna and forest classes. The total land use changes detected over the 37 year study period are consistent between the reference data and the MapBiomas classification with 232 million hectares and 252 million hectares, or 27% and 29% of the Brazilian territory respectively.
Light use efficiency (LUE) based bimonthly gross primary productivity (GPP) for global grasslands at 30 m spatial resolution (2000–2022)
(2025) Isik, Mustafa Serkan; Parente, Leandro Leal; Consoli, Davide; Sloat, Lindsey; Mesquita, Vinicius Vieira; Ferreira Junior, Laerte Guimarães; Sabbatini, Simone; Stanimirova, Radost; Teles, Nathália Monteiro; Robinson, Nathaniel; Costa Junior, Ciniro; Hengl, Tomislav
The article describes production of a high spatial resolution (30 m) bimonthly light use efficiency (LUE) based gross primary productivity (GPP) data set representing grasslands for the period 2000 to 2022. The data set is based on using reconstructed global complete consistent bimonthly Landsat archive (400TB of data), combined with 1 km MOD11A1 temperature data and 1 CERES Photosynthetically Active Radiation (PAR). First, the LUE model was implemented by taking the biome-specific productivity factor (maximum LUE parameter) as a global constant, producing a global bimonthly (uncalibrated) productivity data for the complete land mask. Second, the GPP 30 m bimonthly maps were derived for the global grassland annual predictions and calibrating the values based on the maximum LUE factor of 0.86 gCm−2d−1MJ−1. The results of validation of the produced GPP estimates based on 527 eddy covariance flux towers show an R-square between 0.48–0.71 and root mean square error (RMSE) below ~2.3 gCm−2d−1 for all land cover classes. Using a total of 92 flux towers located in grasslands, the validation of the GPP product calibrated for the grassland biome revealed an R-square between 0.51–0.70 and an RMSE smaller than ~2 gCm−2d−1. The final time-series of maps (uncalibrated and grassland GPP) are available as bimonthly (daily estimates in units of gCm−2d−1) and annual (daily average accumulated by 365 days in units of gCm−2yr−1) in Cloud-Optimized GeoTIFF (~23TB in size) as open data (CC-BY license). The recommended uses of data include: trend analysis e.g., to determine where are the largest losses in GPP and which could be an indicator of potential land degradation, crop yield mapping and for modeling GHG fluxes at finer spatial resolution. Produced maps are available via SpatioTemporal Asset Catalog (http://stac. openlandmap.org) and Google Earth Engine.
Seismic facies analysis using chirp sub-bottom profile data from large sandy-bed rivers, lower São Francisco River, Northeast Brazil
(2025) Santos, Landerlei Almeida; Latrubesse, Edgardo Manuel; Feng, Zhou
A chirp sub-bottom profiler (SBP) system (shallow high-resolution seismic) was used to characterize the internal architecture of submerged bedforms and fluvial bars of the lower São Francisco River, Northeast Brazil. From upstream to downstream, the area was subdivided into two geomorphic channel reaches: anabranching-braided; and anabranching-stable. The uppermost sedimentary layers of the riverbed were analysed. A processing flow (bandpass filtering, automatic gain control, time-varying gain and stacking) to attenuate the effect of noise, equalize the gain and highlight the internal structures that were not clear in the primary recorded SBP section (envelope mode) was applied. Detailed seismic analysis and description of the SBP seismic profiles allow the interpretation of seven seismic facies. An idealized stage of development for each channel landform is based on the seismic characteristics of the sandy sets of the anabranching-braided reach. In the anabranching-stable islands reach, the bedforms have a low degree of preservation. Our result demonstrates that the SBP chirp data is a potential tool that allows the identification and definition of sedimentary facies in large sandy-bed rivers.
Jovens escolares e suas práticas espaciais em cidades pequenas: potencialidades para ensinar e aprender geografia
(2025) Ferreira, Afonso Vieira; Cavalcanti, Lana de Souza
Comprender el mundo de relaciones que los jóvenes escolares establecen con sus iguales y con los espacios cotidianos donde desarrollan sus más diversas prácticas espaciales urbanas es una tarea compleja que implica múltiples aspectos. La complejidad de este proceso se intensifica al examinar la relación entre las espacialidades juveniles en las pequeñas ciudades de Brasil y la enseñanza de la geografía. Desde esta perspectiva, este trabajo pretende presentar aspectos teóricos, conceptuales y empíricos de la relación entre la enseñanza de la geografía y las prácticas espaciales de los jóvenes escolares de pequeñas ciudades. La metodología adoptada para producir datos empíricos se basa en la investigación cualitativa, mediante cuestionarios aplicados a alumnos de primer año de enseñanza media de escuelas públicas de pequeñas ciudades del estado de Tocantins. Los resultados indican que las prácticas espaciales urbanas en este contexto son limitadas, lo que requiere esfuerzos específicos para aprovechar el potencial de la enseñanza de la geografía para la educación ciudadana.
Optimizing nitrogen estimates in common bean canopies throughout key growth stages via spectral and textural data from unmanned aerial vehicle multispectral imagery
(2025) Silva, Diogo Castilho; Madari, Beata Emoke; Carvalho, Maria da Conceição Santana; Ferreira, Manuel Eduardo
Leaf nitrogen assessment is crucial for optimizing crop management, driving remote sensing use. This study demonstrates the effectiveness of unmanned aerial vehicles (UAVs) multispectral imagery for enhancing leaf nitrogen content estimation in common bean (Phaseolus vulgaris L.) through the integration of vegetation indices (VIs) and texture features. Research conducted over two years (2021–2022) evaluated various nitrogen rates across critical growth stages (V4, R5, and R7). Machine learning models combining spectral and textural information significantly outperformed single-index approaches, achieving root mean square error (RMSE) values of 1.80 g kg−1 (relative root mean square error – RRMSE = 2.93 %) at V4 stage using support vector machine with VIs, and 2.79 g kg−1 (RRMSE = 5.20 %) at R5 stage using random forest with VIs. For later growth stages (R7) and across the entire season (all growth stages), the combination of VIs and texture metrics proved most effective, with random forest achieving RMSE values of 3.42 and 3.96 g kg−1 (RRMSE = 7.40 and 7.32 %), respectively. Texture analysis in across-row directions (90° and 135°) provided superior performance compared to traditional diagonal approaches for row-planted crops. Linear regression analysis showed that normalized difference texture indices incorporating correlation and homogeneity explained up to 71 % of leaf nitrogen content variability at R7 stage. The optimal nitrogen rate of 91 kg ha−1, validated through both yield response and leaf nitrogen measurements, provides a robust benchmark for nitrogen management in common bean production. This methodology offers a practical framework for real-time, site-specific nitrogen management that improves upon current recommendation systems.
Compreender as juventudes: tarefa importante e necessária para realizar o ensino de Geografia com sucesso
(2025) Cavalcanti, Lana de Souza
The text brings together fundamental aspects for understanding young students in different current contexts, with the aim of contributing to the daily practice of Geography teachers. In the initial part, the text addresses the concept of youth, using previously systematized references as support. Next, a conception of Geography teaching is presented with a view to developing geographic thinking, from a critical perspective. The text continues with elements of the methodological orientation in this perspective, as well as the expectations of young people with school and Geography classes, evidenced in research with schoolchildren, and which influence learning practices. Finally, an understanding of the relationship between youth, geographic learning and daily life is summarized.
Contributions of water resources charges on the Paranaíba river
(2025) Pasqualetto, Antonio; Faria, Karla Maria Silva de; Muro Júnior , Aldo; Mendes, Thiago Augusto
Population growth and demand for water require managers to ensure its availability and quality. Among the instruments defined by law no. 9,433/1997, the charge for water stands out. Thus, the objective was to evaluate the evolution of charges for the use of water resources in Brazil, with emphasis on the Paranaíba river basin. The methodology was based on two phases, one of reviewing articles available in Capes journals and the other of consulting spreadsheets from the Araguari River Basin Agency on charging for the use of water under the Union's jurisdiction in the Paranaíba river basin. The results showed that charging for the use of water resources constitutes a relevant instrument for disciplining and attracting financial resources that will allow improvements in the planning and management of water use. It is noteworthy that irrigation appears as the main user of the flow captured in the Paranaíba river. However, the main source of resources for collection comes from public supply. Among the Federation Units, the Federal District proved to be the largest contributor in the Paranaíba river basin.

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