Results 31 to 40 of about 4,000 (155)

Frost Decreases Fruit Production in a Neotropical Savanna: Implications for Frugivorous Bird Abundances

open access: yesBiotropica, Volume 58, Issue 3, May 2026.
Severe frost events seem to be happening on average every 5 years, rather than 7 years, as previously reported in the southern limit of the Cerrado, a Neotropical savanna. We conducted this study in the Cerrado, where severe frost events allowed us to compare fruit production and frugivorous bird abundance before and after the disturbance.
Mariana Campagnoli   +2 more
wiley   +1 more source

Biocatalytic Reduction of α,β-Unsaturated Double Bonds of Curcuminoid Derivatives by Exserohilum rostratum

open access: yesChemistry
Turmeric is a spice that has gained significant popularity in global cuisine. Beyond its culinary applications, it possesses significant medicinal properties, including antioxidant, anti-inflammatory, and antibacterial properties, which are attributed to
Jânison Nazareno Pastana   +8 more
doaj   +1 more source

Anatomia foliar de espécies de Myrtaceae: contribuições à taxonomia e filogenia Leaf anatomy of Myrtaceae species: contributions to the taxonomy and phylogeny

open access: yesActa Botânica Brasílica, 2009
Trabalhos taxonômicos e filogenéticos têm utilizado informações anatômicas e para contribuir com estes estudos examinaram-se cortes paradérmicos e transversais da porção mediana foliar de Campomanesia adamantium (Camb.) O. Berg, Myrcia cordiifolia DC., M.
Sueli Maria Gomes   +5 more
doaj   +1 more source

European Union Normative Positions, Resilience and Contestation: A Perceptual Approach

open access: yesJCMS: Journal of Common Market Studies, Volume 64, Issue 3, Page 1238-1255, May 2026.
Abstract Positioned within a perceptual approach to European Union (EU) foreign policy, this article explores tensions relating to the resilience of the EU's normative identity, focusing on factors and explanations external to the EU. We engage with EU perceptions amongst external partners theorized as active agents/potential contributors to ...
Natalia Chaban, Ole Elgström
wiley   +1 more source

Anatomia foliar de Polygonaceae (Angiospermae) da planície de inundação do alto rio Paraná

open access: yesActa Scientiarum: Biological Sciences, 2008
A anatomia foliar de Polygonum acuminatum, P. ferrugineum, P. hydropiperoides, P. meisnerianum, P. punctatum, P. stelligerum, Ruprechtia laxiflora e Triplaris americana foi realizada com o objetivo de fornecer subsídios para a identificação destas ...
Melissa Graciotto Silva-Brambilha   +1 more
doaj   +1 more source

The Key Architects of Brazil's Foreign Policy and the Quest for Multipolarity Under Lula

open access: yesBulletin of Latin American Research, Volume 45, Issue 2, April 2026.
ABSTRACT This article analyses the trajectories and worldviews of three central architects of Brazilian foreign policy during Lula's first two terms—Marco Aurélio Garcia, Samuel Pinheiro Guimarães and Celso Amorim. It argues that their progressive and anti‐imperialist orientations, aligned with the Workers' Party's broader project, were decisive in ...
Tiago Soares Nogara
wiley   +1 more source

Desmatamento no Brasil:

open access: yesSustentabilidade em Debate, 2015
O Brasil reduziu muito o desmatamento na Amazônia, mas estancou há alguns anos na marca de 5 mil km²/ano, uma área superior a três cidades de São Paulo, de acordo com o Projeto de Monitoramento do Desmatamento na Amazônia Legal por Satélite (Prodes).
Maria Benevides, Lalo Almeida
doaj  

Anatomia foliar de Corymbia citriodora (Hook.) K.D. Hill & L.A.S. Johnson oriundas da região noroeste do Paraná

open access: yesRevista de Biologia Neotropical, 2015
Tendo em vista a escassez de trabalhos anatômicos utilizados em análises taxonômica e evolutiva da família Myrtaceae, especialmente para os gêneros de Corymbia, este trabalho teve como objetivo descrever a estrutura e ilustrar a anatomia foliar de C ...
Gabriela Silva Moura, Gilmar Franzener
doaj   +1 more source

Chrysoperla externa (Neuroptera: Chrysopidae) as a Potential Biological Control Agent of Raoiella indica (Acari: Tenuipalpidae)

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 4, Page 335-342, April 2026.
First and third instar Chrysoperla externa showed efficient predatory capacity at low R. indica density, but second instar C. externa exhibits a density‐dependent predatory ability. The lacewing C. externa shows promise as a biocontrol agent for R. indica in coconut because it consumed 8362 R. indica females across all its larval instars.
Luis O. Viteri   +6 more
wiley   +1 more source

Capim-braquiária sob lotação contínua e com altura única ou variável durante as estações do ano: morfogênese e dinâmica de tecidos Signalgrass under continuous stocking with fixed or variable height during the seasons: morphogenesis and dynamics of tissues

open access: yesRevista Brasileira de Zootecnia, 2011
Este trabalho foi realizado com o objetivo de identificar estratégias eficazes de manejo do pastejo de Brachiaria decumbens cv. Basilisk, sob lotação contínua, com base em avaliações das suas características morfogênicas e estruturais.
Manoel Eduardo Rozalino Santos   +5 more
doaj   +1 more source

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