Buscar
Mostrando ítems 51-60 de 661
¿Es la sexta extinción en masa una realidad?
(Universidad EAFITGeologíaEscuela de Ciencias Aplicadas e Ingeniería. Departamento de Ciencias de la TierraMedellín, 2024)
Determining whether we are in the midst of the sixth mass extinction is crucial to recognize the current biodiversity crisis and take urgent measures for species conservation. This research examines the characteristics and ...
On the onset of Central Atlantic Magmatic Province (CAMP) volcanism and environmental and carbon-cycle change at the Triassic–Jurassic transition (Neuquén Basin, Argentina)
(Elsevier Science, 2020-09)
The Triassic–Jurassic transition is characterized by the end-Triassic mass extinction approximately synchronous with the onset of emplacement of the Central Atlantic Magmatic Province (CAMP), and associated with a major ...
Seed Dispersal Anachronisms: Rethinking the Fruits Extinct Megafauna Ate
(Public Library Science, 2008-03-05)
Background: Some neotropical, fleshy-fruited plants have fruits structurally similar to paleotropical fruits dispersed by megafauna (mammals > 10(3) kg), yet these dispersers were extinct in South America 10-15 Kyr BP. ...
Standardization of the face-hand test in a Brazilian multicultural population: Prevalence of sensory extinction and implications for neurological diagnosis
(2016-12-01)
OBJECTIVE: The face-hand test is a simple, practical, and rapid test to detect neurological syndromes. However, it has not previously been assessed in a Brazilian sample; therefore, the objective of the present study was ...
The upper Maastrichtian dinosaur fossil record from the southern Pyrenees and its contribution to the topic of the Cretaceous–Palaeogene mass extinction event
(Academic Press Ltd - Elsevier Science Ltd, 2016-01)
In the present paper, the fossil record of the archosaurs (dinosaurs, crocodylomorphs and pterosaurs) of the southern Pyrenees before the Cretaceous–Palaeogene (K–Pg) transition is revised. On the basis of this fossil ...
Nymphalid butterflies diversify following near demise at the Cretaceous/Tertiary boundary
(Royal SocLondonInglaterra, 2009)
Flavones from Erythrina falcata are modulators of fear memory
(Biomed Central Ltd, 2014-08-05)
Background: Flavonoids, which have been identified in a variety of plants, have been demonstrated to elicit beneficial effects on memory. Some studies have reported that flavonoids derived from Erythrina plants can provide ...
Efeitos dos processos bióticos e abióticos na diversificação dos neoselacchii
(Pós-Graduação em Ecologia e ConservaçãoUFS, 2019)