Results 41 to 50 of about 868 (201)

Digital Rights Activism in Multilevel Governance

open access: yesEuropean Policy Analysis, EarlyView.
ABSTRACT Multilevel governance (MLG) without a clear hierarchical structure can create power imbalances among various actors, particularly in settings with overlapping jurisdictions and policy areas. This dynamic is especially pronounced in Internet governance, which faces a complex interplay of domestic laws, state interdependence, and heightened ...
Alison Harcourt
wiley   +1 more source

Evapotranspiration Profiles and Trends in Seasonally Dry and Seasonally Humid Tropical Forests

open access: yesInternational Journal of Climatology, EarlyView.
Moisture availability and vegetation are decisive factors in ET variations, which are greater in the Atlantic Forest. Precipitation contributes positively to ET variations (r = 0.20–0.67). Significant trends (p < 0.05) in ET were identified, with opposing patterns.
Lucas de Morais Teixeira   +5 more
wiley   +1 more source

Variation in plant defenses of Didymopanax vinosum (Cham. & Schltdl.) Seem. (Apiaceae) across a vegetation gradient in a Brazilian cerrado

open access: yesActa Botânica Brasílica, 2003
Cerrado vegetation is composed of a mosaic of vegetation types, from campo sujo, dominated by herbs; campo cerrado and cerrado sensu stricto, with shrubby vegetation; to cerradão, with trees forming a denser forest. This physiognomic mosaic is related to
Pais Mara Patrícia   +1 more
doaj  

Sunshine Duration in Brazil From Meteosat (1983–2020): Climatology, Variability and Long‐Term Trends

open access: yesInternational Journal of Climatology, EarlyView.
Using nearly four decades of Meteosat satellite data (1983–2020), this study presents a country‐wide climatology of sunshine duration (SDU) in Brazil. The results reveal marked regional contrasts, dominant modes of variability, and significant long‐term trends, providing new information on the most relevant meteorological systems that influence SDU and
Maria Lívia Lins Mattos Gava   +2 more
wiley   +1 more source

Accidental Fire in the Cerrado: Its Impact on Communities of Caterpillars on Two Species of Erythroxylum

open access: yesPsyche: A Journal of Entomology, 2012
Among the mechanisms that influence herbivorous insects, fires, a very frequent historical phenomenon in the cerrado, appear to be an important modifying influence on lepidopteran communities.
Cintia Lepesqueur   +2 more
doaj   +1 more source

Species composition, diversity, and vegetation structure in a gallery forest-cerrado sensu stricto transition zone in eastern Mato Grosso, Brazil

open access: yesActa Botânica Brasílica, 2015
We investigated the existence of an ecotone in the species composition, diversity and vegetation structure in the transition between gallery forest and cerrado sensu strictoin central Brazil.
Eddie Lenza   +2 more
doaj   +1 more source

Boron application increases growth of Brazilian Cerrado grasses

open access: yesEcology and Evolution, 2020
Nutrients are known to limit productivity of plant communities around the world. In the Brazilian Cerrado, indirect evidences point to phosphorus as the main limiting nutrient, but some fertilization experiments suggest that one or more micronutrients ...
Luciola Santos Lannes   +4 more
doaj   +1 more source

In vitro anti-Mycobacterium tuberculosis activity of some Brazilian "Cerrado" plants [PDF]

open access: yesRevista Brasileira de Farmacognosia, 2009
The aim of this work was to carry out a screening of some plants of this Brazilian region with activity against Mycobacterium tuberculosis. Chloroform and methanol extracts of 37 plant species distributed among 17 families from Brazilian "Cerrado" which were tested against M.
Pavan, Fernando R.   +5 more
openaire   +4 more sources

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

Hydrophytic Cyperaceae from the Araguaia river basin, Brazil

open access: yesRodriguésia
Cyperaceae is a cosmopolitan family with over 5,000 species, which are often found in wet habitats. In this study we found 31 hydrophylic species of Cyperaceae, belonging to 10 genera (Ascolepis, Calyptrocarya, Cyperus, Eleocharis, Fimbristylis, Fuirena,
Adriana Luiza Ribeiro de Oliveira   +2 more
doaj   +1 more source

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