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Author |
Januka Attanayake, Christine Thomas, Vernon F. Cormier, Meghan S. Miller, Keith D. Koper |
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Title |
Irregular Transition Layer Beneath the Earth's Inner Core Boundary From Observations of Antipodal PKIKP and PKIIKP Waves |
Type |
Journal |
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Year |
2018 |
Publication |
Geochemistry, Geophysics, Geosystems |
Abbreviated Journal |
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Volume |
19 |
Issue |
10 |
Pages |
3607-3622 |
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Keywords  |
inner core boundary inner core solidification inner core structure PKIIKP PKIKP transition |
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Programme |
133 |
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Edition |
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ISSN |
1525-2027 |
ISBN |
1525-2027 |
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yes |
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Call Number |
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Serial |
7385 |
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Author |
Udisti R, Dayan U, Becagli S, Busetto M, Frosini D, Legrand M, Lucarelli F, Preunkert S, Severi M, Traversi R, Vitale V, |
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Title |
Sea spray aerosol in central Antarctica. Present atmospheric behaviour and implications for paleoclimatic reconstructions
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Type |
Journal Article |
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Year |
2012 |
Publication |
Atmospheric Environment |
Abbreviated Journal |
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Volume |
52 |
Issue |
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Pages |
109-120 |
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Keywords |
Inland Antarctica aerosol, Sea spray aerosol, Fractionating effects, Size distribution, Transport processes, Source characterization, Snow-aerosol interaction, |
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Programme |
414 |
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Edition |
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ISSN |
1352-2310 |
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yes |
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Serial |
4660 |
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Author |
Bouruet-Aubertot, P.; Mercier, H.; Gaillard, F.; Lherminier, P. |
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Title |
Evidence of strong inertia-gravity wave activity during the POMME experiment |
Type |
Journal Article |
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Year |
2005 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
110 |
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Pages |
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Keywords |
inertia-gravity waves, turbulent mixing; 4544 Oceanography: Physical: Internal and inertial waves; 4568 Oceanography: Physical: Turbulence, diffusion, and mixing processes; 4572 Oceanography: Physical: Upper ocean and mixed layer processes |
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Abstract |
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Programme |
417 |
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Publisher |
American Geophysical Union |
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ISSN |
0148-0227 |
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yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5590 |
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Author |
Mathieu Lucie, Byrne Paul, Guillaume Damien, van Wyk de Vries Benjamin, Moine Bertrand, |
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Title |
The field and remote sensing analysis of the Kerguelen Archipelago structure, Indian Ocean
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Journal Article |
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Year |
2011 |
Publication |
Journal of Volcanology and Geothermal Research |
Abbreviated Journal |
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Volume |
199 |
Issue |
3-4 |
Pages |
206-215 |
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Keywords |
Indian Ocean, field relationship, remote sensing, tectonics, volcanology, |
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Abstract |
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Programme |
1077 |
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Series Volume |
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Edition |
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ISSN |
0377-0273 |
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Approved |
yes |
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Call Number |
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Serial |
4628 |
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Journal Article |
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Year |
2009 |
Publication |
Polar Biology |
Abbreviated Journal |
Polar Biol. |
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Volume |
33 |
Issue |
4 |
Pages |
485 -492 |
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Keywords |
incubation, instrumentation, penguin, |
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Abstract |
The use of data-loggers has permitted to explore the biology of free-ranging animals. However, this method has also been reported to reduce reproductive success while the reasons of this deleterious effect remain poorly documented. In this study, we aimed to identify critical periods of the breeding cycle of Ad,lie penguins (Pygoscelis adeliae) when the reproductive success may decrease because of instrumentation. For this purpose, we monitored 40 pairs, where one parent was instrumented before egg laying and 30 pairs without devices (controls). These pairs were followed at least during the incubation period but the majority was monitored during the entire breeding season. Reproductive success was affected in pairs where males were instrumented. This was not due to extra chick mortality during chick rearing but to a significantly lower hatching success. Moreover, the use of artificial eggs recording incubation temperatures and egg rotation indicated that in instrumented incubating males, eggs spent as much time at optimal incubation temperatures as control eggs but were rotated at a higher frequency. In Ad,lie penguins, males initiate incubation and it has been established that the early stage of incubation is one of the most critical periods for embryonic development. The low hatching rate observed in instrumented males was associated with a higher egg rotation rate, perhaps as a stress response to the presence of the instrument. Even though the causal effects remain unclear, instrumentation severely affected hatching success. For these reasons, we recommend equipping birds after the early incubation.
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Programme |
137 |
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Publisher |
SPRINGER |
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ISSN |
0722-4060 |
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Approved |
yes |
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Serial |
2010 |
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Author |
Hardouin Emilie A, Tautz Diethard, |
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Title |
Increased mitochondrial mutation frequency after an island colonization: positive selection or accumulation of slightly deleterious mutations?
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Type |
Journal Article |
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Year |
2013 |
Publication |
BIOLOGY LETTERS |
Abbreviated Journal |
Biol. Lett. |
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Volume |
9 |
Issue |
2 |
Pages |
20121123 |
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Keywords |
inbred lines, island colonization, mitochondria, Mus musculus domesticus, |
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Abstract |
Island colonizations are excellent models for studying early processes of evolution. We found in a previous study on mice that had colonized the sub-Antarctic Kerguelen Archipelago about 200 years ago that they were derived from a single founder lineage and that this showed an unexpectedly large number of new mutations in the mitochondrial D-loop. To assess whether positive selection has played a role in the emergence of these variants, we have obtained 16 full mitochondrial genome sequences from these mice. For comparison, we have compiled 57 mitochondrial genome sequences from laboratory inbred lines that became established about 100 years ago, also starting from a single founder lineage. We find that the island mice and the laboratory lines show very similar mutation frequencies and patterns. None of the patterns in the Kerguelen mice provides evidence for positive selection. We conclude that nearly neutral evolutionary processes that assume the presence of slightly deleterious variants can fully explain the patterns. This supports the notion of time-dependency of molecular evolution and provides a new calibration point. Based on the observed mutation frequency, we calculate an average evolutionary rate of 0.23 substitutions per site per Myr for the earliest time frame of divergence, which is about six times higher than the long-term rate of 0.037 substitutions per site per Myr. |
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Programme |
136 |
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Thesis |
Bachelor's thesis |
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Series Issue |
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Edition |
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ISSN |
1744-9561 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
4304 |
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Author |
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Title |
Climate change and the ecology and evolution of Arctic vertebrates |
Type |
Book Chapter |
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Year |
2012 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann. N. Y. Acad. Sci. |
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Volume |
1249 |
Issue |
1 |
Pages |
166-190 |
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Keywords |
impacts, phenological changes, plasticity, range shifts, adaptations, threat, trophic interactions, mismatches, sea ice, tundra, parasites, geese, shorebirds, rodents, lemmings, large herbivores, seabirds, marine mammals, polar bear, |
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Abstract |
Climate change is taking place more rapidly and severely in the Arctic than anywhere on the globe, exposing Arctic vertebrates to a host of impacts. Changes in the cryosphere dominate the physical changes that already affect these animals, but increasing air temperatures, changes in precipitation, and ocean acidification will also affect Arctic ecosystems in the future. Adaptation via natural selection is problematic in such a rapidly changing environment. Adjustment via phenotypic plasticity is therefore likely to dominate Arctic vertebrate responses in the short term, and many such adjustments have already been documented. Changes in phenology and range will occur for most species but will only partly mitigate climate change impacts, which are particularly difficult to forecast due to the many interactions within and between trophic levels. Even though Arctic species richness is increasing via immigration from the South, many Arctic vertebrates are expected to become increasingly threatened during this century. |
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Programme |
388,1036 |
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Thesis |
Bachelor's thesis |
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Publisher |
Blackwell Publishing Inc |
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ISSN |
1749-6632 |
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Approved |
yes |
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Call Number |
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Serial |
3962 |
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Author |
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Title |
Evidence of Pathogen-Induced Immunogenetic Selection across the Large Geographic Range of a Wild Seabird |
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Journal |
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Year |
2020 |
Publication |
Molecular Biology and Evolution |
Abbreviated Journal |
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Volume |
37 |
Issue |
6 |
Pages |
1708-1726 |
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Keywords |
immunogenetics, positive selection, Toll-like receptors, pathogen-mediated selection, Antarctica and Southern Ocean, Gentoo penguin |
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Programme |
137,354 |
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Thesis |
Bachelor's thesis |
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ISSN |
0737-4038 |
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yes |
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Call Number |
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Serial |
7663 |
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Title |
First evidence of migration across the South Pacific in endangered Amsterdam albatross and conservation implications |
Type |
Journal |
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Year |
2022 |
Publication |
Marine Policy |
Abbreviated Journal |
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Volume |
136 |
Issue |
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Pages |
104921 |
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Keywords |
Immature at sea distribution International conservation responsibility Juvenile dispersal National Plan of Actions |
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Abstract |
Albatrosses are amongst the most globally-threatened species and fisheries bycatch is one of the major conservation issues worldwide. Among the albatrosses the Amsterdam albatross is listed as one of the most endangered species. Within the current National Plan of Actions framework, the present study outlines the first results of a multi-year survey evaluating juvenile dispersal and immature at sea distribution using geolocation and conservation implications. Here we report the first evidence of an Amsterdam albatross wandering for extensive periods outside the Indian Ocean, in the Pacific Ocean. This unprecedented and novel finding is discussed in terms of overlaps with fisheries and conservations issues. This study brings new insights on movements of vagrant stages of an endangered species, paving the way for refined assessments updates of species vulnerability to ongoing anthropogenic threats while providing basic conservation guidance. This makes it possible to point out the responsibility of the various management bodies both for the high seas regional fisheries management organisations and for exclusive economic zones. |
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Programme |
109 |
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ISSN |
0308-597X |
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yes |
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Serial |
8362 |
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Journal |
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Year |
2022 |
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Volume |
22 |
Issue |
3 |
Pages |
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Abstract |
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136 |
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Edition |
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ISSN |
1492-8442 |
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yes |
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Call Number |
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Serial |
8547 |
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