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26 Titles Match Your Query
Showing 1 through 26 of 26
1. The occurrence of gold in Usnea auratiaco-atra [110-88_03]
In Usnea aurantiaco-atra (Jacq)- Bory, a lichen species collected in the Antarctica, the gold content was determined by the cupellation methods, 317 ppb and 1089 ppb dry weight were found in the lichen ...


2. Weekly censuses of birds and marine mammals, Greenwich Island, Antarctica (En Espanol: Censos semanales de aves y mamiferos marinos, Isla Greenwich, Antartica) [154-93_03]
From January of 1994 and to date, weekly censuses of birds and marine mammals have been taken in the coastal sector of Chile Bay, between the Caleton Iquique and the English Strait located near Greenwich ...


3. Monitoring of beached solid residues on the coast of Cape Shirreff, Livington Island [018-94_01]
This data set contains information related to the collection of waste at the coast of Cape Shirreff, Livingston Island. The material collected corresponds only to the wastes generated off-shore as ...


4. Physical and chemical oceanography of Chile Bay, English Strait [154-93_01]
Temperature, salinity, and penetration of light from 0 -200 meters were measured on a weekly basis, depending on sailing conditions. The measurements were taken using a CTD installed at a station ...


5. Quantitative variations of phenolic compounds related to thallus age in Umbilicaria antarctica in Antarctica [110-88_02]
Densitometric analysis (HPTLC) was used to determine the concentrations of phenolic metabolites in thalli of different ages in Umbilicaria antarctica Frey et Lamb. Usnic acid and atranorin concentrations ...


6. Temporal variation in usnic acid concentration in Usnea aurantiaco-atra in Antarctica [110-88_01]
In Usnea aurantiaco-atra, growing in the Antarctica, a monthly variation in the usnic acid content, in individual thalli, was studied by means of scanning densitometry (HPTLC). The higher accumulation ...


7. UV Radiation at Robert Island, South Shetland, Antarctica [003-94_02]
Solar ultraviolet radiation measurements by means of chemical actinometry and spectroradiometric instrumental were carried out at the Risopatron base at Robert Island, Antarctic, during January 1996. ...


8. Lipid content in leaves of Deschampsia antarctica from maritime Antartica [148-92_02]
Deschampsia antarctica plants were collected in Robert Island, Antarctica, and frozen in liquid nitrogen. Polar lipids and the composition of fatty acids in phospholipids and galactolipids were analysed ...


9. Size structure of tussocks of a population of Deschampsia antarctica Desv. in Robert Island, Maritime Antarctica [148-92_01]
The distribution and size structure of tussocks of the population of Deschampsia antarctica Desv. was studied in the Coppermine Peninsula, Robert Island. Different study sites showed predominance ...


10. Alkali basalt volcanism along a subduction-related magmatic arc: The case of Puyuhuapi Quaternary volcanic line, Southern Andes (44deg20minS) [159-96_03]
In Southern Chile, plate configuration is characterized by ridge-ridge-trench collision in correspondence of Taitao peninsula (Chile triple junction). The different converging rates of Nazca and Antarctic ...


11. Integral study of Late Cenozoic Volcanism in the South Shetland Islands, Antartica (Estudio Integral del Volcanismo Cenozoico Superior de las Islas Shetland del Sur, Antartica) [159-70_02]
In this study, the petrographic characteristics and distribution of volcanic rocks of the superior cenozoic in the South Shetland Islands are discussed. The geology of the Coppermine Peninsula, on ...


12. Antarctic Marine Metabolites: New Polyhydroxylated Steroidal Glycosides from the Starfish Odontaster validus [20-82_02_INACH]
Two new asterosaponins, validosides A and B, were isolated from the butanolic extract of the starfish Odontaster validus and their structures established as (24S)-24-O-[2,4-di-O-methyl-B-xylopyranosyl-(1-2)-a-arabinofuranosyl]-5a-chol-e ...


13. Response of Deschampsia to environmental conditions during the Antarctic summer [012-98_04]
The data is derived from a study of the reaction of Deschampsia to environmental conditions during the Antarctic summer and consists of biochemical analyses of leaves, analyses by HPLC of lipids, ...


14. Stratified and Inter-annual analysis of zooplankton of the English Strait, Chile Bay (En Espanol: Analisis de zooplancton estratificado e inter-anual del Estrecho Ingles, Bahia Chile) [154-93_02]
During summer to the beginning of autumn, samples of zooplankton were gathered between water depths 0 and 200 meters weekly from a fixed station in the English Strait, Chile Bay. Samples were collected ...


15. Santiagoside, the first Asterosaponin from an Antarctic Starfish (Neosmilaster georgianus). [20-82_01]
A new asterosaponin, named santiagoside, has been isolated from the Antarctic starfish Neosmilaster georgianus and, its structure elucidated on the basic of extensive spectroscopic experiments and ...


16. The Bransfield Rift (El Rif del Bransfield) [159-96_01]
The result of observations and the aeromagnetic profiles through the gravimetric river basin, along with the geologic studies throughout the coasts of the South Shetland Islands, as well as registered ...


17. Zonation, size, population density and distribution of sexes in Nacella concinna, Chile Bay (Zonacion, estructura de talla, densidad poblacional y proporcion de sexo de Nacella concinna, en Bahia Chile) [154-93_04]
For this study, determination of stature, distribution of the sexes, zonation and relative abundance of the population were determined for the Antarctic limpet Nacella concinna in the intertidal ...


18. Morphologic variations of Ehrenbergina stack [09-95_01]
The investigation of the benthic Foraminifera of the South Shetland Island, allowed us to detect the presence of abundant units of E. parva in Caleta Balleneros and Puerto Foster stations (Deception ...


19. Spatial distribution of penguin nests in reproductive colonies [040-87_01]
The data set contains information about the ecology of the pygoscelidos penguins (Papua, adelie and antarctic). These data consist of a census of nesting groups, chick weight gain, and chick mortality ...


20. Systematic studies of the Antarctic species of the Phyllophoraceae (Gigartinales, Rhodophyta) based on rbcL sequence analysis [001-93_01]
The taxonomic placement of four antarctic species of the marine red algal family Phyllophoraceae (Gigartinales) is assessed within a preliminary molecular phylogeny of the family based on direct sequence ...


21. Geochemestry of basic magmatism on Byers Peninsula, Antarctica [01-95_02]
In this field campaign 59 samples of volcanic and subvolcanic rocks were collected. Ten of these samples were analyzed via ICP at the Department of Geology, U. de Chile. The samples are subalkaline ...


22. Igneous Petrography of Byers Peninsula, Livingston Island, Antarctica [01-95_01]
During this campaign, 50 volcanic and subvolcanic rock samples were collected, which were described petrographically. In general they are porphyritic rocks composed of phenocrysts of plagioclase, ...


23. Monitoring of environmental parameters [018-93_01]
The data set contains information on the main meteorological and micro-climatic variables of the Cape Shirreff area in Livingston Island. Three stations were installed in Daniel Beach, Paso Ancho ...


24. Measurement of tropospheric aerosols [007-93_01]
The dataset contains twelve samples (of about five days each) of tropospheric aerosol less than < 3 micrometer fractionated into five particle diameter ranges (Dp: 2.84, 2.04, 1.4, 0.8, 0.441 micrometer) ...


25. Population Description of Deschampsia in Robert Island [012-98_02]
Data set consists of a statistical analysis (census count) of Deschampsia antarctica population on Robert Island in the South Shetland Islands.


26. Total censuses of fur seal Arctocephalus gazella, in the SEIC No. 32 [018-82_01]
There are population data of Antarctic fur seal from reproductive season 1982-83 up the present. The first censuses correspond to counts without separation in etarial category, this separation started ...


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