Results 31 to 40 of about 941 (175)
Topsoil depth influences the recovery of rupestrian grasslands degraded by mining
Revista Brasileira de Ciência do Solo, 2021 Close association of iron mining and ferruginous rupestrian grassland places this ecosystem in a special condition of vulnerability, with a large number of degraded areas requiring restoration.
Lina Andrade Lobo Rezende +4 more
doaj +1 more source
Two new endemic species of Portulaca (Portulacaceae) from the Brazilian Pampa grasslands
Nordic Journal of Botany, EarlyView.Portulaca L. is a monophyletic, cosmopolitan genus of succulent plants comprising ca 153 species, with particularly high diversity in xerophytic ecosystems in tropical and subtropical regions. Based on morphological evidence, we describe and illustrate two new species from the Brazilian Pampa, Portulaca guaritensis and Portulaca guenoa.
José Roberto Ferraz +3 more
wiley +1 more source
Beyond forests: Harnessing conservation gardening for open biomes in Brazil
PLANTS, PEOPLE, PLANET, EarlyView.Urban gardening offers an innovative conservation strategy by integrating native ornamental species into urban landscapes. We evaluated the ornamental potential of the Brazilian flora by comparing the representation of species from forests versus open biomes (focusing on campo rupestre grasslands) and introduced and validated the Index of Ornamental ...
Flávia Santos Faria +2 more
wiley +1 more source
Rapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.ABSTRACT Rationale Dielectric barrier discharge ionisation (DBDI) in an active‐capillary configuration (including the commercial SICRIT source) is widely used as a soft, ambient‐pressure ionisation method for vapours and gases, yet the role of water vapour in controlling reagent ion chemistry and analytical behaviour has not been mechanistically ...
Miroslav Polášek +2 more
wiley +1 more source
Entomologia Experimentalis et Applicata, Volume 174, Issue 9, Page 1022-1032, September 2026.Targeted Selective Treatment (TST) can reduce the rate of resistance development in livestock gastrointestinal nematodes but can also reduce the effects of anthelmintics on non‐target organisms. Most studies of non‐target anthelmintic effects focus on beneficial species.
Megan J. Lewis +3 more
wiley +1 more source
RodriguésiaRESUMO Os campos rupestres sobre canga são um ambiente peculiar e freqüente na região do Quadrilátrero Ferrífero, Minas Gerais. Sua vegetação, associada a afloramentos hematíticos, apresenta uma série de adaptações morfológicas e fiosiológicas, assim ...
Pedro Lage Viana, Julio Antonio Lombardi
doaj +1 more source
Goethite Reduction by a Neutrophilic Member of the Alphaproteobacterial Genus Telmatospirillum
Frontiers in Microbiology, 2019 In tropical iron ore regions, biologically mediated reduction of crystalline iron oxides drives ongoing iron cycling that contributes to the stability of surface duricrusts.
Emma J. Gagen +3 more
doaj +1 more source
Iron Isotopes Reveal Fe Export Driven by Change of Tropical Weathering Regime
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract Unraveling paleoenvironmental signals recorded in laterites is crucial for quantifying weathering‐driven elemental fluxes at the Earth's surface. New stable iron isotope data (δ56Fe), combined with (U‐Th)/He ages in Fe‐oxides from a ferruginous duricrust from French Guiana, reveal the response of Fe hosted in laterite to past changes in ...
Z. Fekiacova‐Castanet +11 more
wiley +1 more source
New canopy legume species highlight liana gap sampling across Amazonian and Atlantic rain forests
TAXON, Volume 75, Issue 4, August 2026.Abstract Lianas are a key component of the Neotropical flora, accounting for 10% of angiosperm richness and playing important ecological roles. However, the canopy preference of some species often leads to their underrepresentation in herbarium collections, thereby exacerbating Linnaean, Darwinian, and Wallacean shortfalls. The papilionoid legume genus
Andrés Fonseca‐Cortés +4 more
wiley +1 more source
(U–Th)/He geochronology of goethite and the origin and evolution of cangas
Geochimica et Cosmochimica Acta, 2014 (U-Th)/He geochronology of 147 grains of goethite cements extracted from ferruginous duricrusts (cangas) developed on banded iron-formations from the Quadrilátero Ferrífero region, Minas Gerais, Brazil, records a history of protracted mineral dissolution-reprecipitation that started at ca. 48.1. ±. 4.8. Ma and continues intermittently until the Present.
Monteiro,Hevelyn S. +4 more
openaire +4 more sources