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Showing 1 to 14 of 14 for “"Southern South America"”.
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Mineralogical, Chemical, and Isotopic (Sr, Pb) Composition of Atmospheric Mineral Dusts in an Ombrotrophic Peat Bog, Southern South America
… bog records of atmospheric dust depositions in southern South America have been reported. Therefore, the major and trace elements, and mineralogical and radiogenic isotopic compositions of inorganic fraction in a peat bog from southern South America were investigated. The main goal was to …
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Shepherd's Wanted: Wester Ross Pioneers to Patagonia, 1880-1930
… reservation of a dual carriageway into the southernmost Chilean city of Punta Arenas the bronze sculpture of a shepherd gives testimony to the founding wealth of the region. The shepherd, his horse, two collie dogs and a small flock of sheep represent the importance of the sheep industry to …
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Descrição de quatro novas espécies de Belostoma Latreille, 1807 e análise cladística do grupo B. plebejum sensu Nieser, 1975 (Insecta: Heteroptera: Belostomatidae)
… water bugs, currently reported from Honduras to southern South America. The main goals of this thesis were to conduct a cladistic analysis to test the monophyly of B. plebejum species group and to develop a phylogenetic hypothesis for the group. During the study of the specimens, four new species …
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The biogeography of Striated Caracaras Phalcoboenus australis
… of Striated Caracaras, coastal raptors of far southern South America. Like other caracara species, Striated Caracaras are relatively social, nest in dense aggregations where food is abundant, and feed largely by scavenging and opportunism. Unlike other caracaras, however, their distribution and …
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Systematics, Biogeography, and Phylogeography of Thylamys Mouse Opossums, a Recent Radiation of Neotropical Marsupials
… genus of Neotropical marsupials from central and southern South America. Chapter 1 is part of a collaborative work with Robert Voss and Sharon Jansa (Chapter 1). In it, we resolve longstanding issues surrounding <italic>Thylamys</italic> taxonomy and nomenclature using mitochondrial DNA sequences …
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In Support of a Rationally Managed Fishery: Age and Growth in Patagonian Toothfish (<i>Dissostichus eleginoides</i>)
… on the continental shelves and shelf breaks of southern South America and the Southern Ocean. Stock structure, critical to good fisheries management, can be inferred from growth differences between areas, but available growth data are compromised by inconsistencies in age estimation methods, …
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Testing the late-Holocene climate signal from ombrotrophic bogs in southernmost Chile and the Falkland Islands: a multi-proxy, multi-profile and multi-site approach
Peatlands in Southern South America (SSA), in the path of the Southern Westerly Wind belt (SWW), offer the potential of reliable palaeoclimate archives. This investigation aimed to test the late-Holocene climate signal related to variability of the SWW. Three sites were investigated: San Juan and …
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Provenance of Eastern Magallanes Foreland Basin Sediments: Mineralogical and Geochemical Analyses Reveal Paleogene Tectonic Unroofing of the Fuegian andes
<p>Though southern South America and the Antarctic Peninsula were previously connected through a Paleozoic-Mesozoic subduction system on the western margin of Gondwana, this connection was tectonically disrupted in the Cenozoic by forming the Drake Passage in the Scotia Sea. Heavy mineral …
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Observations of Dynamic Topography from South American Atlantic Margin
… dynamic topography and its expressions along the South American Atlantic margin. First, the spatial pattern of dynamic topography is examined through the study of residual depth anomalies on oceanic crust abutting this margin. An extensive seismic reflection and refraction database is compiled, …
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Ecophysiology, Morphology and Phylogeography of Insects in the Scotia Arc
The Scotia Arc, comprising southern South America, South Georgia and the South Orkney Islands and the Antarctic Peninsula, is home to a range of understudied insect species which are constantly exposed to extreme environmental conditions. To help reduce the amount of uncertainty surrounding insect …
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ANTARCTIC GLACIAL CHRONOLOGY REFLECTED IN THE OLIGOCENE THROUGH PLIOCENE SEDIMENTARY SECTION IN THE ROSS SEA
… It also corresponds to climatic changes in southern South America and New Zealand and to changes in oceanic circulation patterns. Development of an ice sheet over West Antarctica in the middle Miocene (14 to 10 myB.P.) requires an earlier data of formation for the East Antarctica ice sheet. …
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Palaeozoic Palaeomagnetism of South-Eastern Australia
… Devonian loop in their APW path passing through southern South America (on a reconstruction of Gondwana), whereas others draw a path directly through Africa during this period. The main controversy stems essentially from whether or not palaeomagnetic data from eastern Australia are incorporated …
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The influence of environmental temperature on the thermal tolerance of Antarctic notothenioid fishes
… fishes in the chronically cold waters of the Southern Ocean has resulted in a remarkably narrow thermal tolerance shared among most extant species. While most of these fishes have the capacity to accommodate the physiological challenges of low temperature, they show a greatly reduced tolerance …
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Evolution of the genus Aristolochia - Systematics, Molecular Evolution and Ecology
… that a group of five species from central and southern South America (including A. lindneri) could be monophyletic and sister to Aristolochia subsection Pentandrae, a monophyletic taxon consisting of about 35 species from southern USA, Mesoamerica, and the West Indies. Colonisation, …