| Records |
| Author |
Bart Van De Vijver, Steven Dessein |
| Title |
Cyclotella deceusteriana , a new centric diatom species (Bacillariophyta) from the sub-Antarctic Region |
Type |
Journal |
| Year |
2018 |
Publication |
Phytotaxa |
Abbreviated Journal |
|
| Volume |
333 |
Issue |
1 |
Pages |
108-116 |
| Keywords |
Algae centric diatoms Cyclotella morphology new species Sub-Antarctica |
| Abstract |
During a survey of the freshwater diatom flora of the sub-Antarctic region (Iles Kerguelen and Iles Crozet) in the southern Indian Ocean, an unknown Cyclotella taxon was observed that was formerly identified as the presumed cosmopolitan C. meneghinana. Detailed morphological analysis based on light and scanning electron microscopical observations and comparison with several similar Cyclotella taxa worldwide justified the description of this unknown taxon as a new species: Cyclotella deceusteriana sp. nov. The new taxon is characterized by the presence of marginal fultoportulae on every costa, hyaline furrows between the raised marginal parts on which the striae are located, 2, occasionally 1, 3 or 4 central fultoportulae and an entirely flat, smooth, relatively small central area. The new species is described and compared with other Cyclotella taxa. Notes on its distribution and ecology are added. |
| Programme |
136 |
| 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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| 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 |
1179-3163 |
ISBN  |
1179-3163 |
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 |
7469 |
| Permanent link to this record |
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| |
| Author |
Tshoanelo Miya, Ofer Gon, Monica Mwale, Elie Poulin |
| Title |
Molecular systematics and taxonomic status of three latitudinally widespread nototheniid (Perciformes: Notothenioidei) fishes from the Southern Ocean |
Type |
Journal |
| Year |
2016 |
Publication |
Zootaxa |
Abbreviated Journal |
|
| Volume |
4061 |
Issue |
4 |
Pages |
381-396 |
| Keywords |
Atlantic Ocean sector Gobionotothen Indian Ocean sector Lepidonotothen mitochondrial DNA nuclear gene Pisces sequence divergence |
| Abstract |
The taxonomic status of the three nototheniids, Lepidonotothen squamifrons, L. larseni and Gobionotothen marionensis from different localities in the Southern Ocean is re-evaluated at the DNA level. DNA sequence divergences and phylogenetic relationship were estimated using a combined mitochondrial (mtDNA, ND2 and COI) dataset and data for one nuclear gene (S7 intron 1). Phylogenies of both datasets had Lepidonotothen kempi nested within L. squamifrons lineage, with low sequence divergences (0% to 0.4%) between the two nominal species suggesting that they are populations of one species. Therefore, these results do not support the previous splitting of L. squamifrons into different species. Similarly, the L. larseni specimens also represented a single genetic unit (0.3% to 0.6%) with low geographic variation between Atlantic and Indian Ocean specimens, which does not support the splitting of this species into geographically restricted species. The mtDNA phylogeny clearly separated individuals of G. acuta from Kerguelen, Heard and MacDonald Islands from G. marionensis individuals into different clades, with sequence divergence of 2.9% between these clades supporting they are different species. |
| Programme |
1044 |
| 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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| 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 |
1175-5334 |
ISBN |
1175-5334 |
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 |
6701 |
| Permanent link to this record |
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| |
| Author |
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| Title |
Shoreline changes in a rising sea level context: The example of Grande Glorieuse, Scattered Islands, Western Indian Ocean |
Type |
Journal |
| Year |
2015 |
Publication |
Acta Oecologica |
Abbreviated Journal |
|
| Volume |
72 |
Issue |
|
Pages |
110-119 |
| Keywords |
Climate change French overseas territories Indian Ocean Observatory Reef islands Scattered Islands Sea level rise Shoreline changes Vertical land movement |
| Abstract |
This paper provides baseline data on absolute and relative sea level variations and shoreline changes in the Scattered Islands region of the Indian Ocean, based on aerial image analysis, satellite altimetry and field observations and in situ measurements from the 2009 and 2011 TAAF scientific expeditions. The analysis shows the importance of regular observations and monitoring of these islands to better understand reef island responses to climate stressors. We show that Grande Glorieuse Island has increased in area by 7.5 ha between 1989 and 2003, predominantly as a result of shoreline accretion: accretion occurred over 47% of shoreline length, whereas 26% was stable and 28% was eroded. Topographic transects and field observations show that the accretion is due to sediment transfer from the reef outer slopes to the reef flat and then to the beach. This accretion occurred in a context of sea level rise: sea level has risen by about 6 cm in the last twenty years and the island height is probably stable or very slowly subsiding. This island expansion during a period of rising sea level demonstrates that sea level rise is not the primary factor controlling the shoreline changes. This paper highlights the key role of non-climate factors in changes in island area, especially sediment availability and transport. We also evidence rotation of the island, underscoring the highly dynamic nature of reef islands. |
| Programme |
688 |
| Campaign |
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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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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 |
1146-609X |
ISBN |
1146-609X |
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 |
7067 |
| Permanent link to this record |
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| |
| Author |
Eric Bernard, Jean Michel Friedt, Sophie Schiavone, Florian Tolle, Madeleine Griselin |
| Title |
Assessment of periglacial response to increased runoff: An Arctic hydrosystem bears witness |
Type |
Journal |
| Year |
2018 |
Publication |
Land Degradation & Development |
Abbreviated Journal |
|
| Volume |
29 |
Issue |
10 |
Pages |
3709-3720 |
| Keywords |
climate shift geomorphology moraine periglacial processes photogrammetry |
| Abstract |
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| Programme |
1108 |
| 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 |
1099-145X |
ISBN |
1099-145X |
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 |
7248 |
| Permanent link to this record |
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| Author |
Krystyna M. Saunders, Dominic A. Hodgson, Shelley Mcmurtrie, Martin Grosjean |
| Title |
|
Type |
Journal |
| Year |
2015 |
Publication |
Journal of Quaternary Science |
Abbreviated Journal |
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| Volume |
30 |
Issue |
5 |
Pages |
464-477 |
| Keywords |
Campbell Island diatom transfer function Southern Hemisphere sub-Antarctic westerly winds |
| Abstract |
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| Programme |
1133 |
| 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 |
|
Edition |
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| ISSN |
1099-1417 |
ISBN |
1099-1417 |
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7214 |
| Permanent link to this record |
| |
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| |
| Author |
|
| Title |
Water cycle and salinity dynamics in the mangrove forests of Europa and Juan de Nova Islands, southwest Indian Ocean |
Type |
Journal |
| Year |
2016 |
Publication |
Rapid Communications in Mass Spectrometry |
Abbreviated Journal |
|
| Volume |
30 |
Issue |
2 |
Pages |
311-320 |
| Keywords |
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| Abstract |
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| 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 |
1097-0231 |
ISBN |
1097-0231 |
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 |
7056 |
| Permanent link to this record |
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| Author |
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| Title |
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Type |
Journal |
| Year |
2019 |
Publication |
International Journal of Climatology |
Abbreviated Journal |
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| Volume |
39 |
Issue |
8 |
Pages |
3619-3638 |
| Keywords |
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| Abstract |
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| Programme |
1108 |
| 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 |
1097-0088 |
ISBN |
1097-0088 |
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7461 |
| Permanent link to this record |
| |
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| |
| Author |
|
| Title |
New genetic evidence of affinities and discontinuities between bronze age Siberian populations |
Type |
Journal |
| Year |
2018 |
Publication |
American Journal of Physical Anthropology |
Abbreviated Journal |
|
| Volume |
167 |
Issue |
1 |
Pages |
97-107 |
| Keywords |
Afanasievo ancient DNA Okunevo R1b Tarim Basin |
| Abstract |
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| Programme |
1038 |
| 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 |
|
Summary Language |
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Original Title |
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| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
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| Series Volume |
|
Series Issue |
|
Edition |
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| ISSN |
1096-8644 |
ISBN |
1096-8644 |
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7397 |
| Permanent link to this record |
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| |
| Author |
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| Title |
Metabolic response to lipid infusion in fasting winter-acclimatized king penguin chicks (Aptenodytes patagonicus) |
Type |
Journal |
| Year |
2013 |
Publication |
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
Abbreviated Journal |
|
| Volume |
165 |
Issue |
1 |
Pages |
1-6 |
| Keywords |
Birds Mitochondria Skeletal muscle Triglyceride |
| Abstract |
During the cold austral winter, king penguin chicks are infrequently fed by their parents and thus experience severe nutritional deprivation under harsh environmental conditions. These energetic constraints lead to a range of energy sparing mechanisms balanced by the maintenance of efficient thermogenic processes. The present work investigated whether the high thermogenic capacities exhibited by winter-acclimatized king penguin chicks could be related to an increase in lipid substrate supply and oxidation in skeletal muscle, the main site of thermogenesis in birds. To test this hypothesis, we examined i) the effect of an experimental rise in plasma triglyceride on the whole metabolic rate in winter-acclimatized (WA) and de-acclimatized king penguin chicks kept at thermoneutrality (TN), and ii) investigated the fuel preference of muscle mitochondria. In vivo, a perfusion of a lipid emulsion induced a small 10% increase of metabolic rate in WA chicks but not in TN group. In vitro, the oxidation rate of muscle mitochondria respiring on lipid-derived substrate was +40% higher in WA chicks than in TN, while no differences were found between groups when mitochondria oxidized carbohydrate-derived substrate or succinate. Despite an enhanced fuel selection towards lipid oxidation in skeletal muscle, a rise of circulating lipids per se was not sufficient to fully unravel the thermogenic capacity of winter-acclimatized king penguin chicks. |
| Programme |
131 |
| 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 |
|
Summary Language |
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Original Title |
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| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
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| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1095-6433 |
ISBN |
1095-6433 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7216 |
| Permanent link to this record |
| |
|
| |
| Author |
Benjamin Rey, Claude Duchamp, Damien Roussel |
| Title |
Uncoupling effect of palmitate is exacerbated in skeletal muscle mitochondria of sea-acclimatized king penguins (Aptenodytes patagonicus) |
Type |
Journal |
| Year |
2017 |
Publication |
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
Abbreviated Journal |
|
| Volume |
211 |
Issue |
|
Pages |
56-60 |
| Keywords |
Bioenergetics Birds Free fatty acids Mitochondria Muscle |
| Abstract |
In king penguin juveniles, the environmental transition from a terrestrial to a marine habitat, occurring at fledging, drastically stimulates lipid catabolism and the remodelling of muscle mitochondria to sustain extensive swimming activity and thermoregulation in the cold circumpolar oceans. However, the exact nature of these mechanisms remains only partially resolved. Here we investigated, in vitro, the uncoupling effect of increasing doses of fatty acids in pectoralis muscle intermyofibrillar mitochondria isolated, either from terrestrial never-immersed or experimentally cold water immersed pre-fledging king penguins or from sea-acclimatized fledged penguins. Mitochondria exhibited much greater palmitate-induced uncoupling respiration and higher maximal oxidative capacity after acclimatization to marine life. Such effects were not reproduced experimentally after repeated immersions in cold water, suggesting that the plasticity of mitochondrial characteristics may not be primarily driven by cold exposure per se but by other aspects of sea acclimatization. |
| Programme |
131 |
| 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 |
|
Summary Language |
|
Original Title |
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| Series Editor |
|
Series Title |
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Abbreviated Series Title |
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| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1095-6433 |
ISBN |
1095-6433 |
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7225 |
| Permanent link to this record |
