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Journal Article |
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Year |
2011 |
Publication |
Polar Science |
Abbreviated Journal |
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Volume |
5 |
Issue |
2 |
Pages |
298-312 |
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Keywords |
Barcode, Cytochrome oxidase 1, CEAMARC, Taxonomy, Systematics, |
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Abstract |
The Dumont dUrville Sea (East Antarctic region) has been less investigated for DNA barcoding and molecular taxonomy than other parts of the Southern Ocean, such as the Ross Sea and the Antarctic Peninsula. The Collaborative East Antarctic MARine Census (CEAMARC) took place in this area during the austral summer of 20072008. The Australian vessel RSV Aurora Australis collected very diverse samples of demersal and benthic organisms. The specimens were sorted centrally, and then distributed to taxonomic experts for molecular and morphological taxonomy and identification, especially barcoding. The COI sequences generated from CEAMARC material provide a sizeable proportion of the Census of Antarctic Marine Life barcodes although the studies are still ongoing, and represent the only source of sequences for a number of species. Barcoding appears to be a valuable method for identification within most groups, despite low divergences and haplotype sharing in a few species, and it is also useful as a preliminary taxonomic exploration method. Several new species are being described. CEAMARC samples have already provided new material for phylogeographic and phylogenetic studies in cephalopods, pycnogonids, teleost fish, crinoids and sea urchins, helping these studies to provide a better insight in the patterns of evolution in the Southern Ocean. |
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1124 |
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ISSN  |
1873-9652 |
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Approved |
yes |
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Call Number |
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Serial |
3714 |
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Author |
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Title |
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Type |
Journal Article |
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Year |
2011 |
Publication |
Polar Science |
Abbreviated Journal |
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Volume |
5 |
Issue |
2 |
Pages |
298-312 |
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Keywords |
Barcode, Cytochrome oxidase 1, CEAMARC, Taxonomy, Systematics, |
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Abstract |
The Dumont dUrville Sea (East Antarctic region) has been less investigated for DNA barcoding and molecular taxonomy than other parts of the Southern Ocean, such as the Ross Sea and the Antarctic Peninsula. The Collaborative East Antarctic MARine Census (CEAMARC) took place in this area during the austral summer of 20072008. The Australian vessel RSV Aurora Australis collected very diverse samples of demersal and benthic organisms. The specimens were sorted centrally, and then distributed to taxonomic experts for molecular and morphological taxonomy and identification, especially barcoding. The COI sequences generated from CEAMARC material provide a sizeable proportion of the Census of Antarctic Marine Life barcodes although the studies are still ongoing, and represent the only source of sequences for a number of species. Barcoding appears to be a valuable method for identification within most groups, despite low divergences and haplotype sharing in a few species, and it is also useful as a preliminary taxonomic exploration method. Several new species are being described. CEAMARC samples have already provided new material for phylogeographic and phylogenetic studies in cephalopods, pycnogonids, teleost fish, crinoids and sea urchins, helping these studies to provide a better insight in the patterns of evolution in the Southern Ocean. |
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Programme |
1044 |
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Thesis |
Bachelor's thesis |
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ISSN |
1873-9652 |
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yes |
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Call Number |
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Serial |
1647 |
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Author |
David C, Haefele A, Keckhut P, Marchand M, Jumelet J, Leblanc T, Cenac C, Laqui C, Porteneuve J, Haeffelin M, Courcoux Y, Snels M, Viterbini M, Quatrevalet M, |
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Title |
Evaluation of stratospheric ozone, temperature, and aerosol profiles from the LOANA lidar in Antarctica
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Type |
Journal Article |
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Year |
2012 |
Publication |
Polar Science |
Abbreviated Journal |
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Volume |
6 |
Issue |
34 |
Pages |
209-225 |
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Keywords |
Polar ozone, Polar stratospheric clouds, Lidar, Stratosphere, |
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Abstract |
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Programme |
209 |
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ISSN |
1873-9652 |
ISBN |
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Conference |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
4164 |
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Title |
Growth of an Inshore Antarctic fish, Trematomus newnesi (Nototheniidae), off Adelie Land |
Type |
Journal |
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Year |
2016 |
Publication |
Polar Science |
Abbreviated Journal |
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Volume |
10 |
Issue |
2 |
Pages |
167-172 |
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Keywords |
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Abstract |
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Programme |
1142 |
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ISSN |
1873-9652 |
ISBN |
1873-9652 |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
6733 |
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Author |
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Title |
Echo occurrence in the southern polar ionosphere for the SuperDARN Dome C East and Dome C North radars |
Type |
Journal |
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Year |
2021 |
Publication |
Polar Science |
Abbreviated Journal |
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Volume |
28 |
Issue |
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Pages |
100684 |
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Keywords |
Echo occurrence IRI model Polar cap radars Ray-tracing |
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Abstract |
In this paper, echo occurrence rates for the Dome C East (DCE) and the new Dome C North (DCN) radars are studied. We report the ionospheric and ground scatter echo occurrence rates for selected periods around equinoxes and solstices in the final part of the solar cycle XXIV. The occurrence maps built in Altitude Adjusted Corrected Geomagnetic latitude and Magnetic Local Time coordinates show peculiar patterns highly variable with season. The comparisons of the radar observations with the International Reference Ionosphere model electron density and with ray tracing simulations allow us to explain the major features of observed patterns in terms of electron density variations. The study shows the great potential of the DCE and DCN radar combination to the Super Dual Auroral Radar Network (SuperDARN) convection mapping in terms of monitoring key regions of the high-latitude ionosphere critical for understanding of the magnetospheric dynamics. |
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Programme |
312 |
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Campaign |
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ISSN |
1873-9652 |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
8020 |
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Author |
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Title |
Comparison of interferometer calibration techniques for improved SuperDARN elevation angles |
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Journal |
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Year |
2021 |
Publication |
Polar Science |
Abbreviated Journal |
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Volume |
28 |
Issue |
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Pages |
100638 |
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Keywords |
Geolocation HF radar Interferometer calibration Ionosphere SuperDARN |
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Abstract |
The high frequency radars in the Super Dual Auroral Radar Network (SuperDARN) estimate the elevation angles of returned backscatter using interferometric techniques. These elevation angles allow the ground range to the scattering point to be estimated, which is crucial for the accurate geolocation of ionospheric measurements. For elevation angles to be accurately estimated, it is important to calibrate the interferometer measurements by determining the difference in the signal time delays caused by the difference in the electrical path lengths from the main array and the interferometer array to the point at which the signals are correlated. This time delay is known as tdiff. Several methods have been proposed to estimate tdiff using historical observations; these methods are summarised in this paper. Comparisons of the tdiff estimates from the different calibration methods are presented and sources of uncertainty discussed. The effect of errors in the estimated tdiff value on the accuracy of geolocation is evaluated and discussed. The paper concludes with a series of recommendations for both scientific SuperDARN data users and SuperDARN radar operators. |
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Programme |
312 |
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ISSN |
1873-9652 |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
8088 |
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Author |
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Title |
Spatio-temporal patterns in arctic fox (Vulpes alopex) diets revealed by molecular analysis of scats from Northeast Greenland |
Type |
Journal |
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Year |
2022 |
Publication |
Polar Science |
Abbreviated Journal |
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Volume |
32 |
Issue |
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Pages |
100838 |
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Keywords |
Greenland Metabarcoding Predation Trophic interactions Tundra |
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Abstract |
The arctic fox (Vulpes lagopus) is endemic to the Arctic where it holds a central position in the trophic interactions. The diet of the species has previously been described as being highly flexible, but whether this flexibility is a constant trait through time, or merely reflects fast temporal changes in abundance among prey taxa, has so far been poorly resolved. Using molecular analyses of arctic fox scats from Northeast Greenland, we first examined the temporal dynamics of arctic fox diets during the short snow-free season, and then examined whether local food availability at different sites affected arctic fox dependence on lemmings. Arctic fox diets included most terrestrial vertebrate species found in the region, and exhibited substantial temporal changes, generally reflecting the dynamic changes in prey availability from late winter through autumn. This dietary flexibility was also reflected geographically, with arctic foxes consuming a variety of local prey (mainly waterfowl and lemmings) in summer. Moreover, the dietary response of arctic foxes to changes in lemming abundance depended on access to non-lemming prey. Based on these findings, we discuss whether varying degrees of lemming-dependency, combined with geographical differences in winter food availability, may explain previously published differences in arctic fox breeding patterns in high arctic Greenland. |
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Programme |
1036 |
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ISSN |
1873-9652 |
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Approved |
yes |
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Call Number |
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Serial |
8406 |
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Author |
A. Saintenoy, J.-M. Friedt, A. D. Booth, F. Tolle, E. Bernard, D. Laffly, C. Marlin, M. Griselin |
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Title |
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Type |
Journal |
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Year |
2012 |
Publication |
Near Surface Geophysics |
Abbreviated Journal |
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Volume |
11 |
Issue |
2 |
Pages |
253-261 |
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Keywords |
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Abstract |
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Programme |
1108 |
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ISSN |
1873-0604 |
ISBN |
1873-0604 |
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Approved |
yes |
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Call Number |
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Serial |
6966 |
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Author |
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Title |
Population genetics of 17 Y-chromosomal STR loci in Yakutia
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Type |
Journal Article |
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Year |
2010 |
Publication |
Forensic Science International: Genetics |
Abbreviated Journal |
Forensic Sci Int Genet |
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Volume |
4 |
Issue |
5 |
Pages |
e129 -e130 |
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Keywords |
Y-Chromosomal STR, Haplotype, AmpFlSTR Yfiler, Yakut population, |
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Abstract |
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Programme |
1038 |
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ISSN |
1872-4973 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
2689 |
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Title |
Strong genetic admixture in the Altai at the Middle Bronze Age revealed by uniparental and ancestry informative markers
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Type |
Journal Article |
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Year |
2014 |
Publication |
Forensic Science International: Genetics |
Abbreviated Journal |
Forensic Sci Int Genet |
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Volume |
12 |
Issue |
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Pages |
199-207 |
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Keywords |
Ancient DNA, Admixture, Bronze Age, Altai Mountains, |
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Abstract |
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Programme |
1038 |
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Series Editor |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1872-4973 |
ISBN |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
4902 |
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