Results 51 to 60 of about 2,541 (209)

A remarkable new species of Cavichiana (Hemiptera: Cicadellidae: Cicadellinae) from southeastern Brazil [PDF]

open access: yesZoologia (Curitiba), 2020
Cavichiana Mejdalani et al., 2014 was a formerly monotypic Cicadellinae genus exclusively found in bromeliads from southeastern Brazil. Here a new species is described, diagnosed, and illustrated from Itatiaia National Park, municipality of Itamonte ...
Victor Quintas   +3 more
doaj   +3 more sources

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

open access: yesGeological Journal, EarlyView.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae   +6 more
wiley   +1 more source

Exploring portable NIR spectroscopy in transmittance and reflectance modes for the authentication of Brazilian coffees with geographical indications

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Geographical indications (GIs) certify the link between coffee origin and quality, enabling premium pricing and protecting producers. However, the high market value of GI coffees increases their vulnerability to fraud, underscoring the need for reliable and practical authentication methods.
Leticia Tessaro   +4 more
wiley   +1 more source

Spatiotemporal changes in land cover land use in protected areas of Serra da Mantiqueira, Southeastern Brazil

open access: yesEnvironmental Challenges, 2021
An assessment of the dynamics of land cover and use in and around a Protected Area (PA) located in the Área de Preservação Ambiental da Serra da Mantiqueira (APASM; Mantiqueira Mountain Range Environmental Protection Area) and Parque Nacional do Itatiaia
Ismael Aparecido da Silva   +4 more
doaj   +1 more source

Tectonic overview of the West Gondwana margin [PDF]

open access: yes, 2008
The oceanic southern margin of Gondwana, from southern South America through South Africa, West Antarctica, New Zealand (in its pre break-up position), and Victoria Land to Eastern Australia is one of the longest and longest-lived active continental ...
Pankhurst, Robert J., Vaughan, Alan P.M.
core   +1 more source

Additions to the Bryophyte Flora of the Neotropics [PDF]

open access: yes, 2004
New and remarkable records of bryophytes from Venezuela, Brazil, Costa Rica and Ecuador are reported. Diphyscium chiapense and Hedwigia ciliata var. leucophaea are new to South America.
Lüth, Michael, Schäfer-Verwimp, Alfons
core  

The tree-shrub vegetation in rocky outcrop cerrado areas in Goiás State, Brazil [PDF]

open access: yes, 2012
We describe the floristic composition of the tree-shrub vegetation in 10 areas of rocky outcrop cerrado in Goiás State, Brazil. Ten 20 × 50 m plots (totaling 1 ha) were established and all of the individuals with diameters at 30 cm above soil level (DB30)
Lenza, Eddie   +3 more
core   +2 more sources

Revealing patterns of endemism in the transatlantic family Chelodesmidae (Polydesmida: Diplopoda)

open access: yesCladistics, EarlyView.
Abstract With fossil records dating back to the Silurian/Late Ordovician, millipedes stand out as one of the earliest terrestrial animal groups. Their limited vagility and high endemism make them valuable tools for formulating and testing biogeographic hypotheses, including those related to macro‐vicariance events.
Rodrigo Salvador Bouzan   +4 more
wiley   +1 more source

Cactaceae na Serra Negra, Minas Gerais, Brasil

open access: yesRodriguésia
Apresenta-se o estudo taxonômico de Cactaceae na Serra Negra, Minas Gerais. A família está representada na área por cinco gêneros e nove espécies, listados a seguir: Arthrocereus melanurus subsp.
Diego Rafael Gonzaga   +3 more
doaj   +1 more source

First assessment of the avifauna of Araucaria forests and other habitats from extreme southern Minas Gerais, Serra da Mantiqueira, Brazil, with notes on biogeography and conservation

open access: yesPapéis Avulsos de Zoologia, 2009
The avifauna of the Araucaria forests in the higher reaches of the Serra da Mantiqueira massif is little known and poorly documented. This region is recognized as an important area of differentiation of birds in southeastern Brazil.
Marcelo Ferreira de Vasconcelos   +1 more
doaj   +1 more source

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