Results 21 to 30 of about 12,673 (184)

The flowerpiercers interactions with a community of high Andean plants

Avian Research, 2021
Background Flowerpiercers (Diglossa) are traditionally considered as “parasites” of the pollination processes, as they can access the nectar without entering in contact with the reproductive structures of the plants.
Jairo Andrés Cuta-Pineda, Luis Alejandro Arias-Sosa, Roxibell C. Pelayo   +2 more
doaj   +1 more source

Organismos autónomos constitucionales

Derecho Público Iberoamericano, 2023
El presente trabajo tiene por objetivo exponer y analizar algunas mate­rias relativas a los organismos autónomos constitucionales. En concreto, se revisarán las principales definiciones elaboradas por la doctrina y la jurisprudencia constitucional con la finalidad de desentrañar el núcleo esencial de dicha autonomía, los fundamentos argüidos para ...
openaire   +1 more source

Determinación de caudal ambiental para diferentes condiciones: una trayectoria de estudios de caso en Costa Rica

Tecnología en Marcha
La estimación del caudal ambiental en una fuente de agua superficial se puede determinar mediante diferentes metodologías que modifican su nivel de complejidad según las variables involucradas para su cálculo. Desde el Centro de Investigación y Extensión
Laura Chavarría-Pizarro, Isabel Guzmán-Arias, Francisco Quesada-Alvarado, Valeria Serrano-Nuñez, Fernando Watson-Hernández   +4 more
doaj   +1 more source

Isolation of plant nuclei suitable for flow cytometry from species with extremely mucilaginous compounds: an example in the genus Viola L. (Violaceae)

Anales del Jardín Botánico de Madrid, 2011
Flow cytometry analysis has been widely applied in the determination of nuclear DNA content and ploidy level in many organisms. Despite being the most appropriate method for DNA content measurement, flow cytometry also presents some limitations. A fairly
Eduardo Cires, Candela Cuesta, María Ángeles Fernández Casado, Herminio S. Nava, Víctor M. Vázquez, José Antonio Fernández Prieto   +5 more
doaj   +1 more source

Notas sobre el tamaño del genoma en el híbrido Ranunculus x luizetii (Ranunculaceae) y sus progenitores mediante citometría de flujo

Collectanea Botanica, 2011
Notas sobre el tamaño del genoma en el híbrido Ranunculus x luizetii (Ranunculaceae) y sus progenitores mediante citometría de flujo.- Se ha empleado la citometría de flujo para estimar el contenido de ADN nuclear en el híbrido Ranunculus x luizetii y ...
E. Cires, C. Cuesta, J. A. Fernández Prieto   +2 more
doaj   +1 more source

Status clarification and disposal of Carrière’s ivy names

Anales del Jardín Botánico de Madrid, 2016
Carrière in 1890 published 34 names and 33 descriptions of a collection of live ivy plants. In this article we present the analysis of his work from a nomenclatural perspective.
Herminio Severiano Nava, Eduardo Cires, José Antonio Fernández Prieto   +2 more
doaj   +1 more source

Chemical Recruitment for Foraging in Ants (Formicidae) and Termites (Isoptera): A Revealing Comparison

Psyche: A Journal of Entomology, 2012
All termites secrete trail pheromones from their sternal gland, whereas ants use a variety of glands for this purpose. This and the diversity of chemical compounds that serve as trail pheromones among ants, and the uniformity of chemicals among termite ...
Klaus Jaffe, Solange Issa, Cristina Sainz-Borgo   +2 more
doaj   +1 more source

Genetic diversity in peripheral and central populations of the Cantabrian endemism Genista legionensis (Pau) M. Laínz (Fabaceae)

Anales del Jardín Botánico de Madrid, 2013
The impact of habitat fragmentation and isolation on the genetic diversity of populations has attracted much attention in studies of plant conservation.
Eduardo Cires, René Pérez, Álvaro Bueno, José Antonio Fernández Prieto   +3 more
doaj   +1 more source

Multi‐Platform Deployments of Low‐Cost Devices for Cetacean Passive Acoustic Monitoring

Remote Sensing in Ecology and Conservation, EarlyView.
Recent advances in affordable, user‐friendly devices offer new opportunities to overcome cost constraints of underwater passive acoustic monitoring (PAM) and expand acoustic data collection. In this study, we deployed low‐cost acoustic recorders and underwater cameras across a range of platforms in the Western Mediterranean, including fishing gear ...
Greta Jankauskaite, François Poisson, Irati Abascal, Javier Menéndez‐Blázquez, Clara Cánovas Pérez, Sofia Conti, Ricardo Sagarminaga, Juan Antonio Raga, David March   +8 more
wiley   +1 more source

Organismos geneticamente modificados

Archivos de Zootecnia, 2008
Os organismos geneticamente modificados (OGMs) são manipulados de modo a favorecer características desejadas pelo homem, sofrendo alterações no genoma realizadas através da tecnologia do DNA recombinante ou engenharia genética. Estas técnicas, referentes à biotecno-logia, vêm apresentando um desenvolvimento rápido, o que tem contribuído para a obtenção
E. G. Xavier, D. C. N. Lopes, M. D. P. Peters   +2 more
openaire   +2 more sources