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127 results for “Central Argentina”
Data from: First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene–early Pliocene of the southern central Andes, NW Argentina
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Rock glaciers, Central Andes, Argentina, Version 1
Primary rock glaciers are fed by avalanche chutes. At the El Salto rock glacier, surveys have been undertaken in order to determine the creep rate. Between 1981 and 1986 temperatures at elevations between 3500 and 3600 m were measured in the active layer to a depth of 1 m with a multipoint temperature recorder (Grant). On the basis of these measurement Buk (1983) determined that the permafrost table was at a depth of about 3 m and the base of the permafrost at 68 m. Similar conclusions were reached by Barsch and King (1989). As an illustration of the importance of avalanches to these forms, the base camp there was destroyed by an avalanche in November 1983. The surface of the basin of Morenas Coloradas is 54 square km, of which 10.4 square km is seasonally frozen ground. The remaining 60% of the surface is typically periglacial with rock glaciers as the most important forms. In the glacigenic rock glacier, the clean glacier ice ends in detritus-covered or morainic tongues which result in glacigenic ice being incorporated within the substrate. In this way, ice persists at lower altitudes and under very arid conditions (Lliboutry, 1986; Garleff and Stingl, 1986; Schrott, 1992). Interconnected rock glaciers are generated which undergo different phases of activity not always in agreement with those expected as a resulted of their elevations. That is, they continue to show signs of activity not only at the height of the present 0 degrees C air isotherm, but at lower elevations. In the last step downwards towards the valleys these rock glaciers become inactive, and finally morphologically relict or fossil rock glaciers are found. Meteorological, hydrological and geophysical measurements as well as 5 drillings to a depth of 5 m have been carried out in Morenas Coloradas. At an elevation of 3560 m the temperature oscillates around 0 degrees C (with a maximum variation of 0.5 degrees C) at depths between 4 and 5 m. The annual precipitation (1991-93) is 630 mm and the mean annual temperature is 1.6 degrees C. Using a calculated lapse rate of 0.52 degrees C per 100 m, the 0 degrees C isotherm occurs at approximately 3860 m, which represents a considerable rise in comparison with earlier years. It is assumed that this value is strongly influenced by climate warming in the 1980s and 1990s. Temperatures measured at different depths in Morenas Coloradas at 3560 m are positively correlated with the discharge of Rio Vallecitos (correlation coefficients of 0.8-0.9; significance p=0.01). There is no correlation with snowfall data, however, because of the influence of the 'zonda', a very dry and warm wind (up to 100 km/h) which impedes the accumulation of snow. Between 1978 and 1979, the zonda was active for more than 1000 hours. Discharge from the basin is of good quality and averages 505 l/s with a range from 230 l/s (early spring) to >1000 l/s (summer). In comparison, Schrott (1994) calculated the discharge of a rock glacier in the arid region of San Juan, Argentina to be only 5-8 l/s. These data are presented on the CAPS Version 1.0 CD-ROM, June 1998.
FIGURE 3 in New data on morphology and natural history of Deltamys kempi Thomas, 1919 (Cricetidae, Sigmodontinae) from central-eastern Argentina
FIGURE 3. Winter, spring, summer and autumn population structure of Deltamys kempi from central-eastern Argentina, by sex. Age intervals are based on body weights (in g). Grey bars represent the proportion of the population of a given sex at a certain season which fell into that category [m = males; f = females].
Biodiversity map: Reservoirs in central and southern Argentina.
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FIGURE 1 in Ephemeroptera and Plecoptera biodiversity in central Patagonia, Chubut province, Argentina
FIGURE 1. Sampling sites in Chubut province. Code of sampling sites in Table 1. P.N.: Los Alerces National Park.
FIGURE 5 in Taxonomic status of Akodon oenos (Rodentia, Sigmodontinae), an obscure species from West Central Argentina
FIGURE 5. Upper molar left series comparison among Akodon species: a. CNP 1897 (A. oenos; Llancanelo Natural Reserve, Mendoza); b. CNP 2352 (A. oenos, topotype; La Pega, Mendoza); c. CNP 1491 (A. spegazzinii, Carapunco, Tucumán); d. CNP 2384 (A. molinae, Chos Malal, Neuquén); e. CNP 2346 (A. neocenus, topotype; Neuquén, Neuquén). Scale = 1 mm.
FIGURES 11–16 in The species of Grammostola (Araneae: Theraphosidae) from Central Argentina: taxonomy, distribution, and surface ultrastructure of coxal setae
FIGURES 11–16. Grammostola vachoni (11–14, 16), Grammostola burzaquensis (15). 11. Detail of apical zone of long spiniform setae. 12. Short and long spiniform setae. lsp = long spiniform setae, ssp = short spiniform setae. 13. Stridulatory setae on retrolateral face of maxilla. 14. Detail of short barbs with curved tips. 15. Stridulatory setae on retrolateral face of maxilla. 16. Detail of one stridulatory setae.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.