Biologia Evolutiva, Ecologia i Ciències Ambientals: Enviaments recents
Ara mostrant els elements 281-300 de 1903
Age-related variability in buccal dental microwear in Middle and Upper Pleistocene human populations.
Infants are thought to present a different buccal microwear pattern than adults and these, therefore, are generally analyzed separately. However, El-Zaatari & Hublin [2009] showed that occlusal texture in Neandertal and ...
Contribution of microbial and invertebrate communities to leaf litter colonization in a Mediterranean stream
Leaf litter inputs and retention play an important role in ecosystem functioning in forested streams. We examined colonization of leaves by microbes (bacteria, fungi, and protozoa) and fauna in Fuirosos, an intermittent ...
Dos nuevas especies de Zapatella (Hym., Cynipidae) para Colombia que producen agallas en ramas de Quercus humboldtii (Fagaceae)
Se describen dos nuevas especies del género Zapatella para Colombia: Z. inflata Pujade-Villar & Rodríguez n. sp. y Z. tuberosa Pujade- Villar & Caicedo n. sp. Ambas corresponden a formas agámicas que producen agallas en ...
Reaffirming the Loma Mountains National Park in Sierra Leone as a critical site for the conservation of West African chimpanzee (<em>Pan troglodytes verus</em>)
The population of West African chimpanzees (Pan troglodytes verus) is declining rapidly mostly due to the impact of human activities and habitat loss. Sierra Leone harbors the third largest population of this subspecies, ...
Enjoying the warming Mediterranean: transcriptomic responses to temperature changes of a thermophilous keystone species in benthic communities
Information about the genomic processes underlying responses to temperature changes is still limited in non‐model marine invertebrates. In this sense, transcriptomic analyses can help to identify genes potentially related ...
Aportacio al coneixement dels boscos caducifolis dels Pirineus catalans
Aportación al conocimiento de los bosques caducifolios de los Pirineos catalanes - Se describen y comentan dos nuevas asociaciones del orden Fagetalia sylvaticae reconocidas en los Pirineos catalanes. Se trata en ambos ...
Carbon and nitrogen allocation and partitioning in traditional and modern wheat genotypes under pre-industrial and future CO2 conditions
The results of a simultaneous 13C and 15N labelling experiment with two different durum wheat cultivars, Blanqueta (a traditional wheat) and Sula (modern), are pre- sented. Plants were grown from the seedling stage in three ...
First record of eucalyptus gall wasp Leptocybe invasa (Hymenoptera: Eulophidae) in Mexico
The presence of the invader eucalyptus gall wasp Leptocybe invasa Fischer & La Salle (Hymenoptera: Eulophidae) is recorded for the first time in Mexico. This forest pest has been detected in northern México City, at an ...
When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams
Most fluvial networks worldwide include watercourses that recurrently cease to flow and run dry. The spatial and temporal extent of the dry phase of these temporary watercourses is increasing as a result of global change. ...
Bridging levels of pharmaceuticals in river water with biological community structure in the Llobregat river basin (NE Spain)
A wide range of human pharmaceuticals are present at low concentrations in freshwater systems, particularly in sections of polluted river. These compounds show high biological activity, often associated with a high stability. ...
Semiologia de l'adaptació alimentària en períodes històrics a Catalunya
Stress indicator analysis in historical populations allows us to make an approximation to the like quality conditions of human popultions. Those markers, like caries frequency, presence of hipoplasic defects in dental ...
Presencia de Symbiocladius wygodzinskyi Roback, 1965 (Diptera, Chironomidae) en Perú. Notas taxonómicas.
Se cita la presencia de S. wygodzinskyi Roback, 1965 (Diptera: Chironomidae) en dos áreas diferentes de Perú, mucho más al norte de la distribución original y viviendo sobre ninfas del género Meridialaris sp. (Ephemeroptera: ...
Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus)
Mediterranean monk seals (MMS) are among the most endangered marine mammals on Earth.We screened mitochondrial variability (control region [CR1] and mitogenomes) of the species through a 180‐yr timeframe and extended by ...
Violent aggression predicted by multiple pre-adult environmental hits
Early exposure to negative environmental impact shapes individual behavior and potentially contributes to any mental disease. We reported previously that accumulated environmental risk markedly decreases age at schizophrenia ...
Inter-Individual Variability and Conspecific Densities: Consequences for Population Regulation and Range Expansion
The presence of conspecifics can strongly modulate the quality of a breeding site. Both positive and negative effects of conspecifics can act on the same individuals, with the final balance between its costs and benefits ...
Measuring the dynamic photosynthome.
Background Photosynthesis underpins plant productivity and yet is notoriously sensitive to small changes in environmental conditions, meaning that quantitation in nature across different time scales is not straightforward. ...
Notas floristicas
Las siguientes notas botánicas se refieren exclusivamente al valle de Ribes, zona en la que vengo realizando excursiones desde hace varios años.
NRN1 Gene as a Potential Marker of Early-Onset Schizophrenia: Evidence from Genetic and Neuroimaging Approaches
Included in the neurotrophins family, the Neuritin 1 gene (NRN1) has emerged as an attractive candidate gene for schizophrenia (SZ) since it has been associated with the risk for the disorder and general cognitive performance. ...
How do baleen whales stow their filter? A compoarative bioimechanical analysis of baleen bending
Bowhead and right whale (balaenid) baleen filtering plates, longer in vertical dimension (3-4+ m) than the closed mouth, presumably bend during gape closure. This has not been observed in live whales, even with scrutiny ...
