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IM Normae: The Death Spiral of a Cataclysmic Variable?
Patterson, Joseph; Miguel Agustino, Enrique de
; Knigge, Christian (American Astronomical Society, 2022-01)
We present a study of the orbital light curves of the recurrent nova IM Normae since its 2002 outburst. The broad “eclipses” recur with a 2.46 hr period, which increases on a timescale of 1.28(16) × 106 yr. Under the ... -
Marine carotenoids: biological functions and commercial applications
Vílchez Lobato, Carlos; Forján Lozano, Eduardo; Cuaresma Franco, María; Bédmar, Francisco; Garbayo Nores, Inés; Vega, José M. (MDPI, 2011)
Carotenoids are the most common pigments in nature and are synthesised by all photosynthetic organisms and fungi. Carotenoids are considered key molecules for life. Light capture, photosynthesis photoprotection, excess ... -
Assessing freshwater fish sensitivity to different sources of perturbation in a Mediterranean basin
Hermoso López, Virgilio; Blanco Garrido, Francisco; Clavero Pineda, Miguel; Prenda Marín, José (Wiley-Blackwell Publishing, INC, 2009)
The accuracy of bioassessment programs is highly limited by the precision of the systems used to derive sensitivity-tolerance values for the organisms used as indicators. We provide quantitative support to the objective ... -
Addressing longitudinal connectivity in freshwater systematic conservation planning
Hermoso López, Virgilio; Linke, Simon; Prenda Marín, José; Possingham, Hugh (Wiley-Blackwell, 2011)
1. Freshwater conservation has received less attention than its terrestrial or marine counterparts, despite freshwater systems containing a considerable amount of the earth´s biodiversity. Given the accelerated rate of ... -
Assessing the ecological status in species-poor systems: a fish-based index for Mediterranean Rivers (Guadiana River, SW Spain)
Hermoso López, Virgilio; Clavero Pineda, Miguel; Blanco Garrido, Francisco; Prenda Marín, José (Elsevier, 2011-02-15)
The assessment of the ecological status of freshwater ecosystems is a key issue for many international laws as the Water Framework Directive in light of the actual impoverished status of such ecosystems. Different ... -
Enhanced productivity of a lutein-enriched novel acidophile microalgae grown on urea
Casal Bejarano, Carlos; Cuaresma Franco, María; Vílchez Lobato, Carlos; Vega Piqueres, José María (MDPI, 2011)
Coccomyxa acidophila is an extremophile eukaryotic microalga isolated from the Tinto River mining area in Huelva, Spain. C. acidophila accumulates relevant amounts of b- carotene and lutein, well-known carotenoids with ... -
β-Carotene production enhancement by UV-A radiation in Dunaliella bardawil cultivated in laboratory reactors
Vílchez Lobato, Carlos; Mogedas Romero, Benito; Casal Bejarano, Carlos; Forján Lozano, Eduardo (Elsevier SCI LTD, 2009)
β-carotene is an antioxidant molecule of commercial value that can be naturally produced by certain microalgae that mostly belong to the genus Dunaliella. So far, nitrogen starvation has been the most efficient condition ... -
Desenvolvemento sustentable e publicidade
(Xunta de Galicia, 2008) -
Productivity and selective accumulation of carotenoids of the novel extremophile microalga Chlamydomonas acidophila grown with different carbon sources in batch systems
Vílchez Lobato, Carlos; Cuaresma Franco, María; Forján Lozano, Eduardo; Casal Bejarano, Carlos (2010)
Cultivation of extremophile microorganisms has attracted interest due to their ability to accumulate high-value compounds. Chlamydomonas acidophila is an acidophile green microalga isolated by our group from Tinto River, ... -
Distribution and habitat preferences of the introduced mummichog Fundulus heteroclitus (Linneaus) in southwestern Spain
The distribution and apparent habitat preferences of the common mummichog (Fundulus heteroclitus) in southwestern Spain were examined during summer-fall 1996. This introduced species was more or less continuously distributed ... -
Análisis retrospectivo de la ictiología europea de aguas continentales
Prenda Marín, José; Granado Lorencio, Carlos (Colegio de Ingenieros de Montes e Ingenieros Técnicos Forestales, 1992)
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Spatio-temporal distribution and ecological preferences of coexisting hydropsychid species (Trichoptera) in two Mediterranean river basins (S Spain)
The hydropsychids of two Mediterranean river basins in southern Spain (Guadaira and Guadalete) were investigated from January 1988 to January 1989. The distribution of hydropsychids along an environmental gradient related ... -
Distribución espacial de la Nutria (Lutra lutra, L. 1758) en la provincia de Córdoba en el período 1992-96: el uso de hábitat en relación con la disponibilidad de agua
Bravo Romero, R.; Prenda Marín, José; López Nieves, P. (CUZNA: Revista de Investigación y didáctica en Los Pedroches, 1998)
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Sobre la presencia de ginetas Genetta genetta (LINNAEUS, 1758) y letrinas en zonas humanizadas
Sáez Gómez, Pedro; Montiel, Cecilia (Sociedad Española para la Conservación y Estudio de los Mamíferos (SECEM), 2006)
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Habitat use by the fish assemblages of two chalk streams
Patterns of habitat use by fish assemblages in two chalk streams in southern England were examined to identify species preferences with respect to major habitat gradients. Both study sites although differing in some physical ... -
Análisis de la distribución histórica de la trucha común (Salmo trutta, Linnaeus, 1758) en Andalucía
Sáez Gómez, Pedro (Ríos con vida-AEMS, 2010)
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Depredación de Mantis religiosa sobre ranita meridional (Hyla meridionalis) en la reserva biológica de Doñana (Huelva)”
Sáez Gómez, Pedro (Asociación Herpetológica Española, 2007)
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La controversia de los agrocombustibles, una propuesta didática para las ciencias para el mundo contemporáneo
(Asociación de Profesores Amigos de la Ciencia-Eureka, 2009)Presentamos una propuesta didáctica para llevar a cabo en la nueva materia Ciencias para el Mundo Contemporáneo (CMC). Elegimos un tema actual y controvertido, como es el caso de los agrocombustibles (mal llamados ... -
Los peces continentales de la provincia de Cádiz
Prenda Marín, José; Blanco Garrido, Francisco; Clavero Pineda, Miguel (Sociedad Gaditana de Historia Natural, 2003)
La ictiofauna continental de la provincia de Cádiz está constituida por 18 especies, de las que 12 son autóctonas y cinco autóctonas estrictamente de agua dulce. Esto significa que más del 50% de las especies de peces ... -
Limnología e Ictiofauna de la Laguna del Tarelo en un Período de Baja Tensión de Oxígeno
Blanco Garrido, Francisco; Serrano Martín, Laura; Reina Vázquez, Marta María; Prenda Marín, José (Sociedad Gaditana de Historia Natural, 2003)
Se presentan datos relativos a las condiciones limnológicas de la masa de agua y a la comunidad íctica de la laguna del Tarelo durante un periodo de fuerte estratificación química con escasa o nula disponibilidad de ...
