Article
Geology
Fabricio A. Caxito, Robert Frei, Alcides N. Sial, Gabriel J. Uhlein, William Alexandre Lima de Moura, Egberto Pereira, Rene Rodrigues
Summary: The Chapada Diamantina region in Brazil is a valuable natural laboratory for studying the fluctuations of Earth's biogeochemical cycles during its mid-age. The sedimentary successions in this region contain both Mesoproterozoic and Neoproterozoic carbonate levels. Analysis of the stromatolites from the Caboclo Formation and the cap carbonates and phosphatic stromatolites from the Salitre Formation reveals distinct redox conditions and suggests a gradual oxygenation of Earth's atmosphere and hydrosphere during the Ediacaran-Cambrian transition.
Article
Geography, Physical
Raphael Parra, Ricardo Galeno Fraga de Araujo Pereira, Carlos Gleidson Campos da Purificacao
Summary: Chapada Diamantina in Brazil is a well-known and popular tourist destination, famous for its karst systems, caves, diverse landscapes, subterranean fauna, and archaeological records. The region boasts several important caves, including some notable tourist attractions and vast cave systems. In addition, there are culturally significant prehistoric cave paintings and religious sites.
REVISTA BRASILEIRA DE GEOMORFOLOGIA
(2023)
Article
Biodiversity Conservation
Patricia Muniz de Medeiros, Karina Ferreira Figueiredo, Paulo Henrique Santos Goncalves, Roberta de Almeida Caetano, Elida Monique da Costa Santos, Gabriela Maria Cota dos Santos, Deborah Monteiro Barbosa, Marcelo de Paula, Ana Maria Mapeli
Summary: This study characterized the traditional use of plants considered as both food and medicine by local specialists in Caete-Acu, Brazil, and identified variables influencing the cultural importance of these species. The most culturally salient species was Anredera cordifolia, with ease of acquisition and perceived nutritional values being key factors.
JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE
(2021)
Article
Energy & Fuels
Pedro A. L. P. Firme, Roberto J. Quevedo, Deane Roehl, Leonardo C. Pereira, Caroline L. Cazarin
Summary: This study analyzes the mechanical behavior of karstified carbonate reservoirs in a synthetic case study based on a Brazilian basin. Results show that the horizontal extension of the cavity and compressibility of the filling material are crucial for reservoir integrity, with qualitative results beneficial for the oil and gas industry. These findings will guide further advanced analyses.
GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT
(2021)
Article
Environmental Sciences
Alexandre Lisboa Lago, Welitom Rodrigues Borges, Jose Sidney Barros, Elizangela de Sousa Amaral
Summary: The town of Teresina in Brazil has a history of land sinking, and the Geological Survey of Brazil/CPRM conducted a Ground Penetrating Radar (GPR) study to identify shallow caves and dissolution structures. The study demonstrated the potential of GPR in characterizing the subsoil of paved streets and identifying various layers.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Plant Sciences
Maria Aparecida Dos Santos, Geraldo Jose Peixoto Ramos, Carlos Wallace Do Nascimento Moura
Summary: In this study, we report the identification and taxonomy of seven periphytic desmid taxa collected in the Chapada Diamantina region of Caatinga domain in northeastern Brazil, including two new species and one variety, along with taxonomic notes and ecological information.
Article
Plant Sciences
Antonio C. B. Dos Santos, Luciano P. De Queiroz, Maria A. P. Da Silva, Antonio P. O. Paula, Lidiane De L. Feitoza, Reginaldo De Carvalho
Summary: Bauhinia orbiculata is a newly discovered species of Leguminosae in northeastern Brazil. It grows in shrubby vegetation called 'carrasco', and has distinctive characteristics such as entire unifoliolate leaves with nine primary veins, rounded to obtuse apex and cordate base, dark ferruginous lower leaf surface, and linear and smooth floral buds. The study provides a detailed description, distribution map, and illustrations, and discusses its relationship with other Brazilian species with entire leaves.
Article
Plant Sciences
Lorena Gali, Ricardo Pacifico, Frank Almeda, Karina Fidanza
Summary: Microlicia is a Neotropical genus with new species reported in this study, providing morphological descriptions and comparisons.
Article
Biodiversity Conservation
Jonas Eduardo Gallao, Deyvison Bonfim Ribeiro, Jessica Scaglione Gallo, Maria Elina Bichuette
Summary: The caves of Igatu in Brazil are a new hotspot for subterranean fauna, with a high diversity of cave species. Some of these species are reported for the first time in Brazil and even worldwide. However, illegal mining and urban expansion pose threats to the caves.
Article
Plant Sciences
Raymond mervyn Harley
Summary: Ongoing fieldwork has uncovered additional unpublished species of Eriope. Following a brief introduction, a new species from Chapada Diamantina is described and illustrated.
Article
Plant Sciences
Luisa Lucresia, Aline Stadnik, Lidia Campos, Nadia Roque
Summary: Myrtaceae, an important plant family in the neotropics, was found to have the largest diversity in the records in Mucug? city, Bahia, with nine genera and 66 species identified. Remote sensing and field expeditions identified four vegetation classes with 12 validated phytophysiognomies.
Article
Geosciences, Multidisciplinary
Carla P. Q. Furtado, Walter E. Medeiros, Sergio V. Borges, Juliana A. G. Lopes, Francisco H. R. Bezerra, Francisco P. Lima-Filho, Rubson P. Maia, Giovanni Bertotti, Augusto S. Auler, Washington L. E. Teixeira
Summary: The present study used a multitool approach to characterize fractures in large fracture corridors, caves, and canyons and investigated their impact on fluid flow in carbonate units. The study revealed that fracture corridors comprise multiple subvertical and conjugate fracture sets, which have a significant influence on fluid flow. The formation of secondary macroporosity provides insights for the study of reservoirs formed in similar structural controls.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Biodiversity Conservation
Monick Lima Carvalho, Claudia Elena Carneiro
Summary: The Sapotaceae family is economically important, providing food, medicinal, and timber resources. Pouteria andarahiensis T.D.Penn., or massaranduba, is an endangered species endemic to Chapada Diamantina, Bahia, Brazil. This study represents the first anatomical investigation of the species, revealing shared characteristics with the Sapotaceae family and unique leaf structural features.
Article
Plant Sciences
Lucas Cardoso Marinho, Karena Mendes Pimenta, Debora Cavalcante De Oliveira, Rodolfo De Franca Alves, Andre Marcio Amorim
Summary: The study of Flaucourtiaceae s.l. in the Flora Neotropica was a significant milestone, leading to the segregation of families such as Lacistemataceae. The newly described species Lacistema ligiae from campos rupestres in Bahia, Brazil, exhibits distinctive leaf and flower characteristics.
Article
Environmental Sciences
L. O. Ohenhen, M. Shirzaei
Summary: This study highlights the role of land subsidence in building collapse in Lagos, Nigeria. Using radar satellite data, we found a correlation between subsidence, foundation damage, and high risk of building failure. This data will aid authorities in formulating building codes, standards, and mitigation strategies.
Review
Environmental Sciences
Thiago Nogueira Lucon, Adivane Terezinha Costa, Paulo Galvao, Mariangela Garcia Praca Leite
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Geosciences, Multidisciplinary
N. Barbosa, A. B. Menezes Leal, D. Debruyne, L. R. Bastos Leal, N. S. Barbos, M. Marinho, L. Merces, J. S. Barbos, L. M. Koproski
PRECAMBRIAN RESEARCH
(2020)
Article
Geosciences, Multidisciplinary
Thiago Nogueira Lucon, Adivane Terezinha Costa, Paulo Galvao, Mariangela Garcia Praca Leite, Thiago Madeira, Leonardo Brandao Nogueira
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Article
Geosciences, Multidisciplinary
Frederico Aragao, Leila Nunes Menegasse Velasquez, Paulo Galvao, Luisa Costa Vieira
Summary: This study establishes Natural Background Levels (NBL) of karst water resources in the Carste Lagoa Santa Protection Unit in the State of Minas Gerais, Brazil, to understand sources of potential hydrogeochemical anomalies and their impacts.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Review
Engineering, Civil
Michele Alves, Paulo Galvao, Paulo Aranha
Summary: This study analyzed the karst hydrogeological controls and anthropic effects in the depletion of a 1 km(2) lake in Sete Lagoas, Minas Gerais, Brazil. Results show that climate variation and urban-industrial expansion increase water demand in the region, impacting local potentiometric surfaces and the lake water level.
JOURNAL OF HYDROLOGY
(2021)
Article
Geosciences, Multidisciplinary
Bruno Conicelli, Ricardo Hirata, Paulo Galvao, Mariana Bernardino, Mateus Simonato, Marcio Costa Abreu, Nataly Aranda, Rafael Terada
Summary: By using GIS technology, the evaluation of groundwater resources in the Sao Paulo metropolitan area revealed a higher hydrological recharge in urban areas compared to rural areas. In the Tiete River basin, the total exploitable groundwater reaches 33 m³/s when considering the need to maintain a minimum historical flow.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Environmental Sciences
Maria da Gloria Garcia, Marcos Antonio Leite do Nascimento, Katia Leite Mansur, Ricardo Galeno Fraga de Araujo Pereira
Summary: Achieving effective management of geodiversity and geoheritage requires integrative, multidisciplinary approaches that include diagnosis, conservation, and promotion. Research findings indicate that while diagnosis and promotion are commonly addressed, conservation represents the main weakness, particularly in terms of legal protection, geosite conservation, and monitoring.
ENVIRONMENTAL SCIENCE & POLICY
(2022)
Article
Water Resources
Lamine Boumaiza, Julien Walter, Romain Chesnaux, Melanie Lambert, Madan Kumar Jha, Heike Wanke, Andrea Brookfield, Okke Batelaan, Paulo Galvao, Nour-Eddine Laftouhi, Christine Stumpp
Summary: Proper knowledge of potential groundwater recharge (PGR) and its spatiotemporal distribution is crucial for sustainable groundwater management. This study developed a GIS-based water budget framework to estimate PGR at a regional scale and map its distribution. The results showed an increasing trend in PGR over the past 100 years, despite the increasing trends in actual evapotranspiration and surface runoff. This finding provides important information for future studies and groundwater management strategies.
HYDROLOGICAL PROCESSES
(2022)
Article
Multidisciplinary Sciences
Fabricio Caxito, Cristiano Lana, Robert Frei, Gabriel J. Uhlein, Alcides N. Sial, Elton L. Dantas, Andre G. Pinto, Filippe C. Campos, Paulo Galvao, Lucas Warren, Juliana Okubo, Carlos E. Ganade
Summary: The study suggests that the closure of key oceans during the integration of mountain-basin evolution led to flourishing of metazoans in balanced redox and nutrient conditions, followed by anoxic incursions due to progressive landlocking of basins, hindering the development of Cambrian ecosystems.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Rafael Terada, Ricardo Hirata, Paulo Galvao, Fernando Saraiva, Norio Tasse, Mariana Luiz, Bruno Conicelli
Summary: This study evaluated the hydraulic interaction between a pond and shallow aquifer in a tropical zone in Brazil. The results showed that eucalyptus trees do not significantly affect the groundwater dynamic and the pond acts as a recharge area rather than a discharge area. This suggests that the eucalyptus root system does not have a significant impact on groundwater levels or flow directions.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Ricardo Galeno Fraga de Araujo Pereira
Summary: The State of Bahia in Brazil has seven geopark proposals, the highest number in the country, with four of them located in the Chapada Diamantina region. These proposals showcase the geological heritage and mining culture of the region. The geoparks can contribute to the sustainable development of the countryside in Bahia, promoting scientific knowledge and the United Nations' Sustainable Development Goals.
Article
Environmental Sciences
Tereza Cristina Ferreira Campos Morato Ilpi, Paulo Henrique Ferreira Galvao, Larissa da Rocha Santos, Camilade Vasconcelos Mueller Athayde, Anelize Bahniuk Rumbelsperger, Leonardo Fadel Cury, Gustavo Barbosa Athayde
Summary: This study analyzed data from a well in a Brazilian karst aquifer to investigate the scale effect and the relationship between fractures/channels flow zones and regional tectonic structures. The result showed a substantial increase in permeability values from micro- to well-scale, indicating the influence of fractures and channels. The groundwater flow was found to be linked to the presence of tectonic structures such as anticlinal folds and diabase dike intrusions.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Engineering, Civil
Pedro Assuncao, Paulo Galvao, Thiago Lucon, Bruno Doi, Peter Marshall Fleming, Tassia Marques, Felipe Costa
Summary: Brazilian Neoproterozoic carbonate rocks, dating from about 740-590 million years ago, contain the oldest karst structured terrains on Earth, resulting in groundwater flow pathways in highly heterogeneous and anisotropic conduit networks. This study investigates the hydrodynamic behavior of these karst systems using dye tracer tests and analysis of breakthrough tracer curves (BTCs) in the Alto Sao Francisco karst region, Brazil. The results show spatial and seasonal variations in water flow and transport parameters, highlighting the dynamic nature of the karst systems. The comparison with other karst systems worldwide reveals the relatively stable hydrodynamic behavior of the Neoproterozoic karst under hydrological conditions.
JOURNAL OF HYDROLOGY
(2023)
Article
Geography
Ricardo Galeno Fraga de Araujo Pereira
Summary: Earth sciences investigations have shown that Earth is 4.6 billion years old, and during this time, numerous processes and the presence of life have greatly shaped the planet. While the initial stages of life were confined to oceans for the first four billion years, the diversity of living organisms expanded in the remaining 500 million years as they occupied land. Human society became a part of the Earth System around 12 thousand years ago, but in comparison to the planet's history of 200 million years, our presence is relatively insignificant. However, the modern lifestyle and activities of human beings have caused significant changes to the Earth System, leading to discussions of human responsibility for global warming and the consideration of a new geological epoch called the Anthropocene.
REVISTA FORMACAO ONLINE
(2023)
Article
Multidisciplinary Sciences
Bruno Conicelli, Ricardo Hirata, Paulo Galvao, Nataly Aranda, Rafael Terada, Oswaldo JosE G. Gutierrez
Summary: The study highlights the prevalence of illegal wells in Brazil, with 88% of them being unauthorized; lack of understanding and engagement from users contributes to unsustainable groundwater exploitation; solutions include social communication programs, user participation, and enhanced government control and inspection mechanisms.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)