Search results for "Rust"

Pleistocene allopatric differentiation followed by recent range expansion explains the distribution and molecular diversity of two congeneric crustac…

2021

AbstractPleistocene glaciations had a tremendous impact on the biota across the Palaearctic, resulting in strong phylogeographic signals of range contraction and rapid postglacial recolonization of the deglaciated areas. Here, we explore the diversity patterns and history of two sibling species of passively dispersing taxa typical of temporary ponds, fairy shrimps (Anostraca). We combine mitochondrial (COI) and nuclear (ITS2 and 18S) markers to conduct a range-wide phylogeographic study including 56 populations of Branchinecta ferox and Branchinecta orientalis in the Palaearctic. Specifically, we investigate whether their largely overlapping ranges in Europe resulted from allopatric differe…

NEW INSIGHTS INTO THE CRUSTAL STRUCTURES OF SOUTH-EASTERN SICILY FROM REPROCESSING OF SEISMIC REFLECTION DATA IN THE FRAME OF THE SIRIPRO PROJECT

2009

Aquatic invertebrate assemblages in ponds from coastal Mediterranean wetlands

2014

Invertebrate aquatic assemblages in ponds from Mediterranean wetlands are composed of organisms belonging to different taxonomic groups, which present a wide range of sizes (from small rotifers to large crustaceans or insects). Although they are often sampled and analyzed separately, the ecological links among these organisms should be considered, especially in very shallow waters. In our study, invertebrate assemblages (including micro-, macrozooplankton and macroinvertebrates) were characterized in eight shal- low lakes from Mediterranean wetlands in Southeastern Spain. A great spatial and temporal variability in the assemblages and in some environmental features was observed. The communi…

Zvaigžņotā Debess: 2006, Rudens

2006

Latvijas Zinātņu akadēmija, Latvijas Universitāte

La reputazione delle istituzioni formative. Una questione di cura e di coerenza

2020

What is the reputation of the school and university in our society? What social credibility do they have? At first glance, it seems necessary to answer that the two main educational institutions do not enjoy a good reputation and this for a series of reasons, two of which have particular pedagogical importance: the typical mistrust of our time towards any form of institutionalization and devaluation care work. Certainly here we can see the signs of the moral fragility of our time, linked to the questioning of all forms of authority. Although it is therefore common today to talk about the importance of educational corresponsibility between school and family, there are numerous gestures that …

Becada, bequeruda grossa, Chocha perdiz (VER0000102)

Altres noms vulgars: Eurasian Woodcock (Anglès), Bécasse des bois (Francès), Waldschnepfe (Alemany) Gabinet de Vertebrats (Departament de Zoologia), Facultat de Ciències Biològiques (Campus de Burjassot), C/ Doctor Moliner, s/n, Bloque B. 5é plant, Burjassot (Valencia). Armari: 10-1 Cartagena Adulto

La geografía escolar: deseos institucionales y vivencias de aula

2018

School geography embodies the attempt of political and academic institutions of systematizing geographical content knowledge: to transform geography in a learning object for the population. The purpose of this article is to highlight the existing differences and similarities in the analysis of school geography. On the one hand, we refer to the curricular framework and to the education system. On the other hand, we deal with the inherent problems of geography teaching in childhood, primary and secondary education. In these contexts, geography contents aim to convey the description of the environment to students that tend to distrust canonical academic discourse, as they consider it to be bey…

Growth pattern of underlithified strata during thrust-related folding

2004

Abstract Asymmetric anticlines with overturned or steeply dipping forelimbs and gently dipping backlimbs are generally interpreted as thrust-related folds. Fold asymmetry occurs as a consequence of forelimb rotation. If deformation takes place in environments dominated by submarine sedimentation, the limbs coincide with the slope (depositional surface) and rotation reflects slope steepening. If folds are nucleated in poorly or unlithified deposits, growth geometry also depends on the properties of the media, such as cohesion and the angle of internal friction. For cohesionless deposits, the tilting of the slope influences the equilibrium of the soft sediments, resulting in gravity-driven fl…

Seismic properties across an amphibolite- to greenschist-facies strain gradient (Neves area, eastern Alps, Italy): New considerations for shear zone …

2021

Abstract Detecting the presence and geometry of crustal shear zones by geophysical methods relies on our understanding of the intrinsic parameters controlling the seismic properties of these deformed rocks, over the range of pressure-temperature conditions expected in the Earth's crust. To this end, we aimed to track changes in P-wave propagation velocity (VP), anisotropy (AVP) and S-wave splitting (AVS) across a natural shear zone using experimental and electron backscatter diffraction methods. Five samples were collected across a meter-scale shear zone developed under amphibolite- to greenschist-facies in the Neves metagranodiorite (Tauern Window, Eastern Alps). With increasing strain, se…

Seismic anisotropy and its impact on imaging the shallow Alpine Fault : an experimental and modeling perspective.

2020

The transpressional Alpine Fault in New Zealand has created a thick shear zone with associated highly anisotropic rocks. Low seismic velocity zones (LVZ) and high seismic reflectivity are recorded in the Alpine Fault Zone, but no study has explored the underlying physical rock parameters of the shallow crust that control these observations. Protomylonites are the volumetrically dominant lithology of the fault zone. Here we combine experimental measurements of P‐wave speeds with numerical models of elastic wave anisotropy of protomylonite samples to explore how the fault zone can be seismically imaged. Numerical models that account for the porosity‐free real samples' fabric elastic tensors f…