Fecal DNA Identifies a Disjunct Population of an Endemic Deer (Mazama jucunda) From the Atlantic Forest, Brazil. [PDF]
Anim GenetABSTRACT Limited knowledge of brocket deer distribution persists due to their elusive behavior and the morphological similarities among species. A population of red brocket deer (genus Mazama) was recently discovered in the Rio Doce State Park (PERD), a protected area within the Brazilian Atlantic Forest; however, species‐level identification was ...
Freitas JLS +4 more
europepmc +2 more sources
Metabarcoding Reveals Fungal Diversity in the Root and Rhizosphere of <i>Isoëtes cangae</i>: An Endemic and Endangered Amazonian Species. [PDF]
Int J MicrobiolThe roots of most plants worldwide are associated with diverse fungal communities present in the soil. This study provides a descriptive assessment of the fungal diversity associated with the roots and rhizosphere of Isoëtes cangae, an endangered species endemic to the Amazon. Two sampling campaigns were conducted during the rainy and dry seasons, with
Araujo AK +6 more
europepmc +2 more sources
Microclimate drives demographic compensation in a narrow endemic tropical species. [PDF]
New PhytolSummary Demographic compensation occurs when reductions in some vital rates are offset by increases in others, allowing populations to maintain similar performance across varying environments. This mechanism may help explain species' ecological distributions and range limits, yet its role at microenvironmental scales remains poorly understood.
Zupo T +10 more
europepmc +2 more sources
Assessing Connectivity Thresholds Under Habitat Loss Scenarios for Threatened Amphibians and Squamate Reptiles in the Eastern Brazilian Amazon. [PDF]
Ecol EvolWe assessed which habitat extinction threshold in a landscape is a good predictor of functional connectivity for 14 species of terrestrial herpetofauna in the eastern Brazilian Amazon. We concluded that forest species should maintain a threshold of approximately 30% of habitat to avoid a significant abrupt decline in overall connectivity.
Teixeira C +4 more
europepmc +2 more sources
Microbial Chemical Diversity and Cytotoxic Potential From Brazilian Ferruginous Caves: A Pioneering Metabolomic Survey. [PDF]
Chem BiodiversABSTRACT Cave microbiomes represent a rich yet understudied source of chemical diversity with biotechnological properties. Microorganisms in these environments thrive under extreme conditions such as darkness, oligotrophy, and high concentrations of inorganic matter like iron ore.
Kato NN +5 more
europepmc +2 more sources
Floral Integration and Phenotypic Selection on Floral Traits of <i>Ipomoea cavalcantei</i> (Convolvulaceae), a Rare, Endemic, and Endangered Species to the Amazon Ironstone Outcrops. [PDF]
Ecol EvolThis paper analyzed the evolutionary potential of Ipomoea cavalcantei (an endemic species from the Amazon) by using floral integration and phenotypic selection analysis. The analyzed population presented floral integration in style length, probably due to selective pressures from pollinators on floral traits related to pollen deposition.
Valentin-Silva A +6 more
europepmc +2 more sources
Cave Geomechanical Index (CGI). Classification and Contribution to the Conservation of Natural Caves in the Iron Mines [PDF]
Geoconservation Research, 2020 Cave geotechnical studies have been the key to meeting the requirements of Brazilian environmental legislation for the conservation of speleological heritage in mining areas. This paper presents a methodology that classifies iron caves according to their
Iuri Brandi +6 more
doaj +1 more source
Geophysical Monograph Series, Page 1-26., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst +8 more
wiley +1 more source
Three new troglobitic Coarazuphium (Coleoptera, Carabidae, Zuphiini) species from a Brazilian hotspot of cave beetles: exploring how the environmental attributes of caves drive ground-beetle niches [PDF]
Subterranean Biology, 2022 Three new species of troglobitic beetles of the genus Coarazuphium are described from specimens collected in iron ore caves in the Flona de Carajás in Brazil, doubling the number of known species for the Carajás region.
Thais Giovannini Pellegrini +3 more
doaj +3 more sources
APPLICATION OF SIMPLIFIED METHOD FOR DETERMINING THE WI TO PREDICT THE PERFORMANCE OF BALLS MILLS IN SOSSEGO PLANT [PDF]
Tecnologia em Metalurgia, Materiais e Mineração, 2013 Over the years Vale S.A. has developed a methodology for scaling industrial comminution circuit that is being constantly improved and implemented in developing new routes and process optimization of circuits in operation.
Vladmir Kronemberger Alves +6 more
doaj +1 more source