Biologia Evolutiva, Ecologia i Ciències Ambientals: Enviaments recents
Ara mostrant els elements 321-340 de 1903
Seguiment del medi marí al Parc Natural del Cap de Creus i al Parc Natural del Montgrí, les Illes Medes i el Baix Ter. Memòria 2016
Aquesta memòria recull els resultats del grup de treball del Departament d’Ecologia de la Universitat de Barcelona relatiu al seguiment del medi marí al Parc Natural del Cap de Creus i al Parc Natural del Montgrí, les ...
Telomere shortening rate predicts species life span
Telomere shortening to a critical length can trigger aging and shorter life spans in mice and humans by a mechanism that involves induction of a persistent DNA damage response at chromosome ends and loss of cellular ...
Variation in scale cortisol concentrations of a wild freshwater fish: habitat quality or seasonal influences?
A signifcant body of literature suggests that aquatic pollutants can interfere with the physiological function of the fsh hypothalamic-pituitary-interrenal (HPI) axis, and eventually impair the ability to cope with subsequent ...
Dendroecologia de Pinus sylvestris en Catalunya
En el presente trabajo se ha llevado a cabo un estudio de las limitaciones climaticas del crecimiento secundario de Pinus sylvestris L. en tres zonas de Catalunya. Para ello se han establecido 10 cronologias en otras tantas ...
Conservation and management of isolated pools in temporary rivers
Temporary rivers are characterized by shifting habitats between flowing, isolated pools, and dry phases. Despite the fact that temporary rivers are currently receiving increasing attention by researchers and managers, the ...
Elevational and local climate variability predicts thermal breadth of mountain tropical tadpoles
The climate variability hypothesis posits that increased environmental thermal variation should select for thermal generalists, while stable environments should favor thermal specialists. This hypothesis has been tested ...
Longer and less overlapping food webs in anthropogenically disturbed marine ecosystems: confirmations from the past
The human exploitation of marine resources is characterised by the preferential removal of the largest species. Although this is expected to modify the structure of food webs, we have a relatively poor understanding of the ...
Noves associacions rupicoles dels Pirineus catalans
La vegetado ruplcola dels Pirineus inclou, com ja se sap, una gran proporció d'espécies particulars, tant per la seva forta adequació a 1'ambient rupestre com pel seu acusat grau d'endemisme; aixó fa que les comunitats ...
Révision et analyse des Cynipoidea (Hymenoptera) de la collection Gerhardy-Fabianus
The Cynipoidea of the Gerhardy-Fabianus collection, deposited in the entomological conservatory of Gembloux Agro-Bio Tech (Liège University), is reviewed and a critical analysis is proposed. From 169 examined specimens ...
Incongruent latitudinal patterns of taxonomic, phylogenetic and functional diversity reveal different drivers of caddisfly community assembly across spatial scales
Aim: Community assembly processes are difficult to observe in nature but can be inferred from species diversity patterns. However, taxonomic patterns may be consistent with multiple explanations, such as habitat filtering ...
Pubic growth study: applicability in sexual and age diagnostic.
The growth of five variables of the ischiopubic area was analyzed from bone material from birth to old age. The main purpose was to evaluate its significance and capacity for age and sex determination during and after ...
Distribution of Heavy Metals in the Commune of Coronel, Chile
Anthropogenic activities often produce different emanations, some of them excessive, producing contamination of the soil, water, and/or air. This article analyzes soil conditions in Coronel, Chile, a commune with a large ...
Maintenance of C sinks sustains enhanced C assimilation during long-term exposure to elevated [CO 2 ] in Mojave Desert shrubs
During the first few years of elevated atmospheric [CO(2)] treatment at the Nevada Desert FACE Facility, photosynthetic downregulation was observed in desert shrubs grown under elevated [CO(2)], especially under relatively ...
Birth weight and adult IQ, but not anxious-depressive psychopathology, are associated with cortical surface area: a study in twins.
Background Previous research suggests that low birth weight (BW) induces reduced brain cortical sur- face area (SA) which would persist until at least early adulthood. Moreover, low BW has been linked to psychiatric disorders ...
Interactions Between sucrose and jasmonate signalling in the response to cold stress
Background: Jasmonates play an important role in plant stress and defence responses and are also involved in the regulation of anthocyanin synthesis in response to sucrose availability. Here we explore the signalling ...
Contribución al conocimiento del género Platymonas (Volvocales)
En el curso de mis investigaciones sobre la microflora acuática he sido favorecido con el hallazgo de dos nuevas especies de volvocales clamidomonadáceas, pertenecientes a un grupo interesante por muchos conceptos, seguramente ...
Andricus mukaigawae and A. kashiwaphilus from China with remarks of morphological differences and inquilines (Hymenoptera: Cynipidae)
Andricus mukaigawae (Mukaigawa, 1913) and A. kashiwaphilus Abe, 1998 are reported for the second time from China on plant hosts Quercus mongolica Fisch. ex Ledeb. and Q. dentata Thunb., respectively. The morphological ...
Obtenir sòl per a poder restaurar els espais miners..., tot un repte
Getting soil in order to restore mining areas..., a challenge. - Mining severely impacts on the environment. Once the extraction of a given mineral resources has concluded, the affected area should be integrated into the ...
Self-filling enclosures to experimentally assess plankton response to pulse nutrient enrichments
Experimental nutrient additions are a fundamental approach to investigating plankton ecology. Possibilities range from whole-lake fertilization to flask assays encompassing a trade-off between closeness to the "real world" ...
Advances in the systematics of the spider genus Troglohyphantes (Araneae, Linyphiidae)
With 128 described species and five subspecies, the spider genus Troglohyphantes (Araneae, Linyphiidae) is a remarkable example of species diversification in the subterranean environment. In this paper, we conducted a ...
