Buscar
Mostrando ítems 61-70 de 243
Phylogeographic analysis reveals high genetic structure with uniform phenotypes in the paper wasp Protonectarina sylveirae (Hymenoptera: Vespidae)
(Public Library Science, 2018-03-14)
Swarm-founding wasps are endemic and common representatives of neotropical fauna and compose an interesting social tribe of vespids, presenting both complex social characteristics and uncommon traits for a eusocial group, ...
A review of Late Quaternary inland dune systems of South America east of the Andes
(Elsevier, 2014-07)
Inland dune systems of South America occur in a variety of environmental settings under different climatic conditions, from humid–subhumid to semiarid–arid. This contribution provides the state of the art on dune research ...
The archaic ilial morphology of an enigmatic pipid frog from the upper Pleistocene of the South American pampas
(Society of Vertebrate Paleontology, 2012-03)
Pipids are odd-looking frogs with a derived morphology that has been considered to be the result of a successful adaptation to a fully aquatic lifestyle. This monophyletic group comprises 33 extant species arranged in three ...
Evolution of the Eastern flank of the North Patagonian Ice Field: The deactivation of the Deseado River (Argentina) and the activation of the Baker River (Chile)
(E Schweizerbartsche Verlags, 2015-03)
Patagonia had significant morphological changes when moraines at the foot of the Andes caused reversals in the drainage of rivers that crossed flat plateaus. Several examples of such basins are known from evidences of ...
Structural geormophology and paleoseismology in the Altiplano of Peru: First geological evidence of the 1950 earthquake
(8th International Symposium on Andean Geodynamics (ISAG)EC, 2019-09)
The Pachatusan Faults System (SFP) is located 5km NW of the city of Cusco. It presents sub-parallel segments that are distributed along 25 km in a width of 2 km. Deposits and geoforms of fluvial-glacial environment are ...
Morphology and surface sedimentation on the upper and middle continental slope off Uruguay
(Faculdad de la Republic (UDELAR). Faculdad de CienciasPunta del Este, 2013-10)
This paper presents for the first time a morphological and surface sediment characterization of the Uruguayan outer continental shelf and slope. The study is based on a high-resolution coverage using hydrographical, ...