Biologia Evolutiva, Ecologia i Ciències Ambientals: Enviaments recents
Ara mostrant els elements 261-280 de 1903
L'aliança Agropyro-Rumicion a la la meitat oriental dels Pirineus Ibèrics
The alliance Agropyro-Rumicion in the eastern half of the Iberian Pyrenees. This alliance, related to eurosiberian landscapes, is represented in the studied area by three associations, all them inhabiting wet and ruderalized ...
Small but powerful: Top predator local extinction affects ecosystem structure and function in an intermittent stream.
Top predator loss is a major global problem, with a current trend in biodiversity loss towards high trophic levels that modifies most ecosystems worldwide. Most research in this area is focused on large-bodied predators, ...
L'ordre Galio-Alliarietalia a Catalunya
Los autores hacen una revision del orden Galio-Alliarietalia en Cataluda en base a los datos reunidos hasta el momento. En principio, se admiten las dos alianzas reconocidas por 10s fitocenologos centroeuropeos (Aegopodion ...
Materiales para una Flora de las algas del NE de España, VI, Desmidiales, Phodophyceae
Como en anteriores trabajos de esta serie, se reunen en el presente cierto número de datos inéditos sobre especies observadas en recolecciones un tanto esporádicas. La representación de las desmidiales y de las rodofíceas ...
A comprehensive spatial analysis of invertebrate diversity within intermittent stream networks: Responses to drying and land use
Freshwater ecosystems are highly vulnerable to the impacts of climate change, which affect both diversity and ecosystem functioning. Furthermore, these ecosystems face additional threats from human activities, such as ...
Nesticus baeticus sp. n., a new troglobitic spider species from south-west Europe (Araneae, Nesticidae)
A new troglobitic species, Nesticus baeticus sp. n. (♂♀), inhabiting the karst landscapes of the high part of the Cazorla, Segura and Las Villas Natural Park (NE Jaén, Spain) where it has been found in 8 caves is diagnosed ...
Nurse species could facilitate the recruitment of mangrove seedlings after hydrological rehabilitation
Changes in hydrology are one of the main causes of mangrove degradation; however, the reforestation of mangrove has been the main restoration activity and very little information on how pioneer species can facilitate the ...
Bryozoans of Banyoles lake
Data for bryozoan species from Banyoles lake (NE Spain) are presented. Three species have been recorded: Fredericella sultana, Lophopus crystallinus and Plurnatella repens, the first two for the first time in the Iberian ...
Buccal dental-microwear and dietary ecology in a free-ranging population of mandrills (Mandrillus sphinx) from southern Gabon.
Analyses of dental micro- and macro-wear offer valuable information about dietary adaptations. The buccal surface of the teeth does not undergo attrition, indicating that dental microwear may directly inform about food ...
Indicateurs espèces thermophobes: État des populations de la gorgone blanche Eunicella singularis dans le Parc national de Port-Cros.
Étude réalisée par l’Universitat de Barcelona, dans le cadre d’un Partenariat Scientifique avec le Parc National de Port-Cros Contrat n° : 13-030 - 83400 PC
Development of the femur - Implications for age and sex determination.
Growth of four variables of the femur (diapyseal length, diaphyseal length plus distal epiphysis, maximum length and vertical diameter of the head) was analyzed by polynomial regression for the purpose of evaluating its ...
Sea surface temperature, rather than land mass or geographic distance, may drive genetic differentiation in a species complex of highly dispersive seabirds
Seabirds, particularly Procellariiformes, are highly mobile organisms with a great capacity for long dispersal, though simultaneously showing high philopatry, two conflicting life-history traits that may lead to contrasted ...
Trophic structure in a seabird host-parasite food web: insights from stable isotope analyses
Ecological studies on food webs rarely include parasites, partly due to the complexity and dimensionality of host-parasite interaction networks. Multiple co-occurring parasites can show different feeding strategies and ...
Catalogue of lichens (and some related fungi) of Navarino Island, Cape Horn Biosphere Reserve, Chile
The Cape Horn Biosphere Reserve, Chile, has been identified as a hotspot of bryophyte diversity and it has been suggested to be the same for lichens. However, in contrast to the extensive bryophyte studies, only preliminary ...
Poblacions, diversitat i història: Memòries de bioantropologia
En aquest informe es descriuen les poblacions investigades des de l'Antropologia biològica i els resultats obtinguts durant quaranta anys de recerca. Es relaciona la diversitat biològica amb la història de les poblacions ...
The role of schizotypal traits and the OXTR gene in theory of mind in schizophrenia: A family-based study
Background. There is consistent evidence that theory of mind (ToM) is impaired in schizophrenia (SZ); however, it remains unclear whether such deficits are trait- or state-dependent. We evaluated ToM in patients with ...
Large differences in the proportion of people with reduced MTHFR Enzymatic activity in Eurasia: allele and haplotype distribution of MTHFR-C677T and MTHFR-A1298C polymorphisms in Spain and Siberia
Adequate levels of folate are crucial for human development. MTHFR (Methylene tetrahydrofolate reductase) is involved in the metabolism of folic acid and other B vitamins. The aim of this work is to examine the allele ...
Historical processes constrain metacommunity structure by shaping different pools of invertebrate taxa within the Orinoco basin
Aim To identify and characterize the distribution of invertebrate taxa in the Orinoco basin and how their distribution affects the metacommunity structure along the river network. Location Meta and Guaviare sub‐basins, ...
Comparative performance of ground vs. aerially assessed RGB and multispectral indices for early-growth evaluation of maize performance under phosphorus fertilization
Low soil fertility is one of the factors most limiting agricultural production, with phosphorus deficiency being among the main factors, particularly in developing countries. To deal with such environmental constraints, ...
L'Estanyo, un estany interessant a la Vall d'Aran
En un petit estany de la Vall d'Aran, a 1640 m. d¿altitud s'ha trobat Luronium natans ( L.) Rafin., planta aquàtica d'àrea atlántica, nova per a la flora deis Països Catalans. També creixen a les vores de l'estany altres ...
