| Records |
| Author |
Devillard S, Santin-janin H, Say L, Pontier D, |
| Title |
Linking genetic diversity and temporal fluctuations in population abundance of the introduced feral cat (Felis silvestris catus) on the Kerguelen archipelago
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Type |
Journal Article |
| Year |
2011 |
Publication |
Molecular Ecology |
Abbreviated Journal |
0962-1083 |
| Volume |
20 |
Issue |
24 |
Pages |
5141-5153 |
Keywords  |
Felis silvestris catus, feral cat, genetic diversity, population abundance, temporal variation, |
| Abstract |
Linking temporal variations of genetic diversity, including allelic richness and heterozygosity, and spatio-temporal fluctuations in population abundance has emerged as an important tool for understanding demographic and evolutionary processes in natural populations. This so-called genetic monitoring was conducted across 12 consecutive years (19962007) at three sites for the feral cat, introduced onto the Kerguelen archipelago fifty years ago. Temporal changes in allelic richness and heterozygosity at 18 microsatellite DNA loci were compared with temporal changes in the adult population abundance index, obtained by typical demographic monitoring. No association was found at the island spatial scale, but we observed an association between genetic diversity and adult population indices from year to year within each study site. More particularly, the magnitude of successive increases or decreases in the adult population abundance index appeared to be the major factor linking the trajectories of genetic diversity and adult population abundance indices. Natal dispersal and/or local recruitment, both facilitated by high juvenile survival when the adult population size is small, is proposed as the major demographic processes contributing to such an observed pattern. Finally, we suggested avoiding the use of the harmonic mean as an estimator of long-term population size to study the relationships between demographic fluctuations and heterozygosity in populations characterized by strong multiannual density fluctuations.
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| Programme |
279 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Blackwell Publishing Ltd |
Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1365-294X |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
1116 |
| Permanent link to this record |
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| Author |
David Renault |
| Title |
A Review of the Phenotypic Traits Associated with Insect Dispersal Polymorphism, and Experimental Designs for Sorting out Resident and Disperser Phenotypes |
Type |
Journal |
| Year |
2020 |
Publication |
Insects |
Abbreviated Journal |
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| Volume |
11 |
Issue |
4 |
Pages |
214 |
| Keywords |
fecundity hostile matrix life-history mating morphology movement range expansion reproduction wing-dimorphic wing-monomorphic |
| Abstract |
Dispersal represents a key life-history trait with several implications for the fitness of organisms, population dynamics and resilience, local adaptation, meta-population dynamics, range shifting, and biological invasions. Plastic and evolutionary changes of dispersal traits have been intensively studied over the past decades in entomology, in particular in wing-dimorphic insects for which literature reviews are available. Importantly, dispersal polymorphism also exists in wing-monomorphic and wingless insects, and except for butterflies, fewer syntheses are available. In this perspective, by integrating the very latest research in the fast moving field of insect dispersal ecology, this review article provides an overview of our current knowledge of dispersal polymorphism in insects. In a first part, some of the most often used experimental methodologies for the separation of dispersers and residents in wing-monomorphic and wingless insects are presented. Then, the existing knowledge on the morphological and life-history trait differences between resident and disperser phenotypes is synthetized. In a last part, the effects of range expansion on dispersal traits and performance is examined, in particular for insects from range edges and invasion fronts. Finally, some research perspectives are proposed in the last part of the review. |
| Programme |
136 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Original Title |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7656 |
| Permanent link to this record |
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| Author |
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| Title |
Seasonal variation of mercury contamination in Arctic seabirds: A pan-Arctic assessment |
Type |
Journal |
| Year |
2021 |
Publication |
Science of The Total Environment |
Abbreviated Journal |
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| Volume |
750 |
Issue |
|
Pages |
142201 |
| Keywords |
Feathers Metal Polar Seasonal variation Top predators |
| Abstract |
Mercury (Hg) is a natural trace element found in high concentrations in top predators, including Arctic seabirds. Most current knowledge about Hg concentrations in Arctic seabirds relates to exposure during the summer breeding period when researchers can easily access seabirds at colonies. However, the few studies focused on winter have shown higher Hg concentrations during the non-breeding period than breeding period in several tissues. Hence, improving knowledge about Hg exposure during the non-breeding period is crucial to understanding the threats and risks encountered by these species year-round. We used feathers of nine migratory alcid species occurring at high latitudes to study bird Hg exposure during both the breeding and non-breeding periods. Overall, Hg concentrations during the non-breeding period were ~3 times higher than during the breeding period. In addition, spatial differences were apparent within and between the Atlantic and Pacific regions. While Hg concentrations during the non-breeding period were ~9 times and ~3 times higher than during the breeding period for the West and East Atlantic respectively, Hg concentrations in the Pacific during the non-breeding period were only ~1.7 times higher than during the breeding period. In addition, individual Hg concentrations during the non-breeding period for most of the seabird colonies were above 5 ?g g?1 dry weight (dw), which is considered to be the threshold at which deleterious effects are observed, suggesting that some breeding populations might be vulnerable to non-breeding Hg exposure. Since wintering area locations, and migration routes may influence seasonal Hg concentrations, it is crucial to improve our knowledge about spatial ecotoxicology to fully understand the risks associated with Hg contamination in Arctic seabirds. |
| Programme |
388 |
| Campaign |
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| Address |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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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 |
0048-9697 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8026 |
| Permanent link to this record |
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| Author |
Roquet, F.; Park, Y.-H.; Guinet, C.; Bailleul, Frdric; Charrassin, Jean-Benot |
| Title |
Observations of the Fawn Trough Current over the Kerguelen Plateau from instrumented elephant seals |
Type |
Journal Article |
| Year |
2009 |
Publication |
Journal of Marine Systems |
Abbreviated Journal |
Special Issue on Observational Studies of Oceanic Fronts |
| Volume |
78 |
Issue |
3 |
Pages |
377-393 |
| Keywords |
Fawn Trough Current; Kerguelen Plateau [46-62S, 65-85E ]; Ocean circulation; Oceanic fronts; Southern Ocean; Bio-logging; Elephant seals |
| Abstract |
Due to its great meridional extent and relatively shallow depths, the Kerguelen Plateau constitutes a major barrier to the eastward flowing Antarctic Circumpolar Current in the Indian sector of the Southern Ocean. While most of the Antarctic Circumpolar Current transport is deflected north of the Kerguelen Islands, the remainder (~50Sv, 1Sv=106m3 s-1) must pass south of the islands, most probably through the Fawn and Princess Elizabeth Troughs. However, the paucity of finely resolved quasi-synoptic hydrographic data in this remote and infrequently sampled area has limited the progress in our knowledge of the regional circulation. Since 2004, a new approach using elephant seals from the Kerguelen Islands as autonomous oceanographic profilers has provided new information on the hydrography over the Kerguelen Plateau, covering the entire Antarctic Zone between the Polar Front and Antarctica, with a mean along-track resolution of about 25km. These finely resolved bio-logged data revealed details of a strong northeastward current found across the Fawn Trough (sill depth: 2600m; 56S, 78E). This so-called Fawn Trough Current transports cold Antarctic waters found mostly south of the Elan Bank, between the Ice Limit (58S) and the Antarctic Divergence (64S) in the eastern Enderby Basin, toward the Australian-Antarctic Basin. Our analysis also demonstrates that the Deep Western Boundary Current, which carries cold Antarctic water along the eastern flank of the southern Kerguelen Plateau collides with Fawn Trough Current at the outlet of the Fawn Trough sill. In other words, the Fawn Trough constitutes a veritable bottleneck, channelling the quasi-totality of the Antarctic Circumpolar flow found south of the Polar Front. Thanks to the unprecedented fine resolution of seal-borne data, a branch of flow centered at the Winter Water isotherm of 1C is also revealed along the northern escarpment of the Elan Bank, and then along the southern edge of Heard Island. Further analysis of different supplementary data reveals a complex circulation pattern in the entire Enderby Basin, with several distinctive branches of flow being strongly controlled by prominent topographic features such as the Southwest Indian Ridge, Conrad Rise, Elan Bank, and Kerguelen Plateau. This newly emerged frontal structure refines considerably previous large-scale circulation schematics of the area. |
| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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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 |
0924-7963 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
6059 |
| Permanent link to this record |
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| |
| Author |
Roquet Fabien, Park Young-Hyang, Guinet Christophe, Bailleul Frdric, Charrassin Jean-Benot, |
| Title |
Observations of the Fawn Trough Current over the Kerguelen Plateau from instrumented elephant seals
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Type |
Journal Article |
| Year |
2009 |
Publication |
Journal of Marine Systems |
Abbreviated Journal |
|
| Volume |
78 |
Issue |
3 |
Pages |
377 -393 |
| Keywords |
Fawn Trough Current, Kerguelen Plateau [46-62S, 65-85E ], Ocean circulation, Oceanic fronts, Southern Ocean, Bio-logging, Elephant seals, |
| Abstract |
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| Programme |
452 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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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 |
0924-7963 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
1961 |
| Permanent link to this record |
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| Author |
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| Title |
Inferring stress from faulting: From early concepts to inverse methods
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Type |
Journal Article |
| Year |
2012 |
Publication |
TECTONOPHYSICS |
Abbreviated Journal |
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| Volume |
581 |
Issue |
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Pages |
206-219 |
| Keywords |
Fault and slip, Faulting, Inverse methods, Stress, |
| Abstract |
We review the evolution of concepts on and methods of estimating the state of stress from fault movements. Theories of failure in isotropic materials suggested a simple geometrical construction of optimal principal stress directions from a fault plane and its associated slip. These optimal directions align shear stress and slip directions and maximize the difference between shear stress and frictional resistance on the fault plane. Optimal stress directions for calcite twinning are obtained by a similar construction, with the difference that they maximize shear stress. Force representation of seismic sources independently introduced pressure, P, and tension, T, axes at positions that also maximize shear stress on both nodal planes. |
| Programme |
316 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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Place of Publication |
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Editor |
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Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0040-1951 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
4259 |
| Permanent link to this record |
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| Author |
Giraldo Carolina, Mayzaud Patrick, Tavernier Eric, Boutoute Marc, Penot Florian, Koubbi Philippe, |
| Title |
Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages
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Type |
Journal Article |
| Year |
2015 |
Publication |
Antarctic Science |
Abbreviated Journal |
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| Volume |
27 |
Issue |
05 |
Pages |
429-438 |
| Keywords |
fatty acids, feeding patterns, ontogenetic changes, |
| Abstract |
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| Programme |
1142 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Cambridge University Press |
Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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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 |
0954-1020 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
6230 |
| Permanent link to this record |
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| Author |
Massom Robert A, Giles A Barry, Fricker Helen A, Warner Roland C, Legrsy Benoit, Hyland Glenn, Young Neal, Fraser Alexander D, |
| Title |
Examining the interaction between multi-year landfast sea ice and the Mertz Glacier Tongue, East Antarctica: Another factor in ice sheet stability?
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Type |
Journal Article |
| Year |
2010 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
115 |
Issue |
C12 |
Pages |
C12027 - |
| Keywords |
fast ice, ice sheet, interaction, 0776 Cryosphere: Glaciology, 0750 Cryosphere: Sea ice, 0728 Cryosphere: Ice shelves, 0732 Cryosphere: Icebergs, |
| Abstract |
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| Programme |
1050 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
AGU |
Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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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 |
0148-0227 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
2684 |
| Permanent link to this record |
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| Author |
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| Title |
Does genetic structure reflect differences in non-breeding movements? A case study in small, highly mobile seabirds |
Type |
Journal |
| Year |
2017 |
Publication |
BMC Evolutionary Biology |
Abbreviated Journal |
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| Volume |
17 |
Issue |
1 |
Pages |
160 |
| Keywords |
Falkland / Malvinas Islands Genetic structure Kerguelen Islands Non-breeding distribution Phylogeography Procellariidae South Georgia Spatial distribution |
| Abstract |
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| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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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 |
1471-2148 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8215 |
| Permanent link to this record |
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| Author |
Philip L. Woodworth |
| Title |
Advances in the observation and understanding of changes in sea level and tides |
Type |
Journal |
| Year |
2022 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
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| Volume |
1516 |
Issue |
1 |
Pages |
48-75 |
| Keywords |
extreme sea levels MSL changes ocean circulation variability ocean tides and their changes sea level and geodesy vertical land movements |
| Abstract |
Climate change, of which sea level change is one component, is seldom out of the news. This paper reviews developments in the measurement and understanding of changes in sea level and tides, focusing on the changes during the past century. The main aim has been to demonstrate how sea level and tidal science are now connected intimately with the fields of climate change and geodesy. |
| Programme |
688 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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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 |
1749-6632 |
ISBN |
1749-6632 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8560 |
| Permanent link to this record |
