Biologia Evolutiva, Ecologia i Ciències Ambientals: Envíos recientes
Mostrando ítems 301-320 de 1903
Global CO2 emissions from dry inland waters share common drivers across ecosystems
Many inland waters exhibit complete or partial desiccation, or have vanished due to global change, exposing sediments to the atmosphere. Yet, data on carbon dioxide (CO2) emissions from these sediments are too scarce to ...
Polygenic determinants of white matter volume derived from GWAS lack reproducibility in a replicate sample
A recent publication reported an exciting polygenic effect of schizophrenia (SCZ) risk variants, identified by a large genome-wide association study (GWAS), on total brain and white matter volumes in schizophrenic patients ...
De vegetations notulae, V
Asplenio (onopteridis)-quercetum ilicis
Emilio Huguet del Villar
El día 21 de enero de 1951 falleció en Rabat Huguet del Villar. Había nacido en 1871, en la ciudad vallesana de Granollers. Formado científicamente en los Estados Unidos, residió en Madrid durante gran parte de su vida, y ...
First record and new hosts relationships of Alloxysta brevis (Thomson, 1862) (Hymenoptera: Cynipoidea: Figitidae: Charipinae) from Algeria
En el marc d'un estudi sobre àfids de cítrics al nord-oest d'Algèria, vam determinar els parasitoides primaris i secundaris sobre les principals espècies d'àfids (Aphis spiraecola Patch, 1914 i Aphis gossypii Glover, 1877) ...
Childhood adversity and psychosis: examinig whether the association is due to genetic confounding using a monozygotic twin differences approach
Purpose: To test whether the association between childhood adversity and positive and negative psychotic experiences is due to genetic confounding. Method: Childhood adversity and psychotic experiences were assessed in a ...
Catálogo de los líquenes epífitos de Quercus ilex subsp. rotundifolia de la Vall d'Albaida (Valencia, España)
[spa] Se presenta un catálogo de 55 líquenes epífitos y 2 hongos liquenícolas que crecen en la corteza de Quercus ilex subsp. rotundifolia en uno de los enclaves más orientales del Sistema Bético peninsular en donde el ...
Ultrastructure, molecular phylogenetics and chlorophyll a content of novel cyanobacterial symbionts in temperate sponge hosts
Marine sponges often harbor photosynthetic symbionts that may enhance host metabolism and ecological success, yet little is known about the factors that structure the diversity, specificity, and nature of these relationships. ...
Systematic revision of the speciose sea slug genus Doto (Heterobranchia: Nudibranchia) − from the Mediterranean to South America
The genus Doto Oken, 1815 is, taxonomically, one of the most complex genera of nudibranchs due to the cryptic nature of its species, their small body size, and the homogeneity among their internal and external features. ...
Rolf Singer, 1906-1994; nota sobre la seva vida, amb especial atencio a la seva activitat a Barcelona
El 18 de gener de 1994 finien a Chicago, els 87 anys de vida atzarosa i increïblement productiva de l'insigne micòleg Rolf Singer
Impact of a WWTP effluent overland flow on the properties of a mediterranean riparian soil
In this work we aim to assess the impact of a WWTP effluent overland flow on properties and nutrient con centrations of a riparian soil, in order to explore the potential of this practice as a nature-based treatment. We ...
Bias in diet determination: Incorporating traditional methods in Bayesian mixing models
There are not "universal methods" to determine diet composition of predators. Most traditional methods are biased because of their reliance on differential digestibility and the recovery of hard items. By relying on ...
Trophic ecology of Hyalella sp. (Crustacea: Amphipoda) in a High Andes headwater river with travertine deposits
We studied the diet of 50 individuals of Hyalella sp. collected in the karstic headwaters of a highaltitude Andean river (3817 m a.s.l. Peru) in four different habitats: macrophytes, bryophytes, leaf litter, and layers of ...
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 ...
