Biologia Evolutiva, Ecologia i Ciències Ambientals: Enviaments recents
Ara mostrant els elements 401-420 de 1906
Flora aloctona de origen americano en los cultivos de CataluÑa
Se comentan las principales características corológicas, históricas y agronómicas de las treinta principales malas hierbas de origen americano que crecen en los cultivos de Cataluña. Las zonas litorales con elevada densidad ...
Green light: gross primary production influences seasonal stream N export by controlling fine-scale N dynamics
Monitoring nutrient concentrations at fine‐scale temporal resolution contributes to a better understanding of nutrient cycling in stream ecosystems. However, the mechanisms underlying fine‐scale nutrient dynamics and its ...
Domicola lithodesi n.gen n.sp. (Amphipoda: Calliopiidae), inhabitant of thepleonal cavity of a South African lithodid crab
Domicola lithodesi, a new genus and species of gammaridean amphipod is described. It is placed in the family Calliopiidae. Two specimens, a male and a preparatory female, were collected in August 1990 from the pleonal ...
Roser Nos. La zoologia al servei de la ciutadania
Roser Nos. Zoology at the service of citizenry. Roser Nos Ronchera (1924-2018) was a good example of a scientist capable of overcoming, with great tenacity, a series of adversities to develop a long and remarkable career. ...
EMS mutagenesis in mature seed-derived rice calli as a new method for rapidly obtaining tilling mutant populations.
Background: TILLING (Targeting Induced Local Lesions IN Genomes) is a reverse genetic method that combines chemical mutagenesis with high-throughput genome-wide screening for point mutation detection in genes of interest. ...
Sobre algunas especies del genero Russula de Catalunya.
Se tratan cuatro especies del género Russula nuevas para la flora micológica de Cataluña. El estudio incluye descripciones de las especies, con iconografía de los aspectos morfológicos más interesantes, fotografías (M. E. ...
A spatiotemporal gradient in the anthropization of Pyrenean landscape. Preliminary report
A preliminary analysis of the timing of landscape anthropization in the southern-central Pyrenees shows the occurrence of an elevational gradient from the Bronze Age (basal belts) to the Middle Ages (alpine belts). This ...
The Phylum Bryozoa as a promising source of anticancer drugs
Recent advances in sampling and novel techniques in drug synthesis and isolation have promoted the discovery of anticancer agents from marine organisms to combat this major threat to public health worldwide. Bryozoans, ...
Bacterioplankton seasonality in deep high-mountain lakes
Due to global warming, shorter ice cover duration might drastically affect the ecology of lakes currently undergoing seasonal surface freezing. Highmountain lakes show snow-rich ice covers that determine contrasting ...
Sobre algunos nombres de táxones atribuidos inapropiadamente a José Planellas Giralt (1820-1888)
El botánico catalán José Planellas Giralt (1820-1888) desarrolló su carrera como profesor de la Universidad de Santiago de Compostela (1847-1868) y luego de la Universidad de Barcelona (1868-1888), donde reemplazó a Antoni ...
Antoni de Bolos i Vayreda
Antoni de Bolòs, un home modest i de bona voluntat, hagué de dur el timó de l'Institut Botànic de Barcelona, la institució cabdal de la Botànica catalana, durant anys molt dificils. Ho feu dignament, evita el col-lapse de ...
Contrasting trait syndromes in angiosperms and conifers are associated with different responses of tree growth to temperature on a large scale
Recent large-scale studies of tree growth in the Iberian Peninsula reported contrasting positive and negative effects of temperature in Mediterranean angiosperms and conifers. Here we review the different hypotheses that ...
Trophic ecology, based on stable isotope values, of long-finned pilot whales Globicephala melas stranded on the Icelandic coast.
In Iceland, occurrences of long-finned pilot whales Globicephala melas and strandings in coastal waters are irregular and thought to be related to prey movements; however, little is known about the population’s trophic ...
Comunitats vegetals higronitròfiles de la Catalunya pirinenca i de les terres properes
Hygronitrophilous plant communities of Pyrenaean Catalonia and its vicinities. The following communities have been recognized: Alliance Bidention tripartitae: Xanthio italici-Polygonetum persicarine O. Bolòs 1957, Bidentetum ...
From local monitoring to a broad‐scale viability assessment: a case study for the Bonelli's Eagle in western Europe
Population viability analysis (PVA) has become a basic tool of current conservation practice. However, if not accounted for properly, the uncertainties inherent to PVA predictions can decrease the reliability of this type ...
La historia de los bosques de Sierra Espuña, Murcia, contada a través de los anillos de sus árboles
Hasta el siglo XIX no comenzaron las repobla-ciones forestales en Espana, de manera siste-matica y con criterios cientffico-tecnicos. Murcia es un caso paradigmatico, ya que a finales de 1888 las denomiriadas 'Comisiones ...
Organochlorine concentrations in aquatic organisms from different trophic levels of the Sundarban mangrove ecosystem and their implications for human consumption
The Sundarbans, a highly biodiverse tropical ecosystem stretching across India and Bangladesh, is also the largest mangrove forest in the world. Organochlorine compounds (OCs) have been extensively used for agriculture and ...
Patterns of variability of retinol levels in a harbour porpoise population from an unpolluted environment
Organochlorine compounds (OC) are known to induce vitamin A (retinoids) deficiency in mammals, which may be associated with impairment of immunocompetence, reproduction and growth. This makes retinoids a potentially useful ...
Rareza en la nora pirenaica. Materiales preliminares para una lista roja
Based on the revision of the online digital Atlas of the Pyrenees Flora, we have selected a preliminary list of the rarest plants of the Pyrenean mountain range. The presence of plants in 1-4 squares, including other taxa, ...
Differences in predator composition alter the direction of structure‐mediated predation risk in macrophyte communities
Structural complexity strongly influences the outcome of predator-prey interactions in benthic marine communities affecting both prey concealment and predator hunting efficacy. How habitat structure interacts with ...
