| Records |
| Author |
Francisco Bravo, Pablo Koch, Sebastian Riquelme, Mauricio Fuentes, Jaime Campos |
| Title |
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Type |
Journal |
| Year |
2019 |
Publication |
Seismological Research Letters |
Abbreviated Journal |
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| Volume |
90 |
Issue |
5 |
Pages |
1792-1800 |
| Keywords |
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| Abstract |
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| Programme |
133 |
| 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 |
0895-0695 |
ISBN  |
0895-0695 |
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 |
7510 |
| Permanent link to this record |
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| |
| Author |
Mathieu Barrere, Florent Domine, Maria Belke-Brea, Denis Sarrazin |
| Title |
|
Type |
Journal |
| Year |
2018 |
Publication |
Journal of Climate |
Abbreviated Journal |
|
| Volume |
31 |
Issue |
23 |
Pages |
9507-9518 |
| Keywords |
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| Abstract |
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| Programme |
1042 |
| 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 |
0894-8755 |
ISBN |
0894-8755 |
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 |
7512 |
| Permanent link to this record |
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| |
| Author |
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| Title |
Hormetic response triggers multifaceted anti-oxidant strategies in immature king penguins (Aptenodytes patagonicus) |
Type |
Journal |
| Year |
2016 |
Publication |
Free Radical Biology and Medicine |
Abbreviated Journal |
|
| Volume |
97 |
Issue |
|
Pages |
577-587 |
| Keywords |
Hormesis Lipid composition Mitochondria Oxidative stress Penguin Redox homeostasis |
| Abstract |
Repeated deep dives are highly pro-oxidative events for air-breathing aquatic foragers such as penguins. At fledging, the transition from a strictly terrestrial to a marine lifestyle may therefore trigger a complex set of anti-oxidant responses to prevent chronic oxidative stress in immature penguins but these processes are still undefined. By combining in vivo and in vitro approaches with transcriptome analysis, we investigated the adaptive responses of sea-acclimatized (SA) immature king penguins (Aptenodytes patagonicus) compared with pre-fledging never-immersed (NI) birds. In vivo, experimental immersion into cold water stimulated a higher thermogenic response in SA penguins than in NI birds, but both groups exhibited hypothermia, a condition favouring oxidative stress. In vitro, the pectoralis muscles of SA birds displayed increased oxidative capacity and mitochondrial protein abundance but unchanged reactive oxygen species (ROS) generation per g tissue because ROS production per mitochondria was reduced. The genes encoding oxidant-generating proteins were down-regulated in SA birds while mRNA abundance and activity of the main antioxidant enzymes were up-regulated. Genes encoding proteins involved in repair mechanisms of oxidized DNA or proteins and in degradation processes were also up-regulated in SA birds. Sea life also increased the degree of fatty acid unsaturation in muscle mitochondrial membranes resulting in higher intrinsic susceptibility to ROS. Oxidative damages to protein or DNA were reduced in SA birds. Repeated experimental immersions of NI penguins in cold-water partially mimicked the effects of acclimatization to marine life, modified the expression of fewer genes related to oxidative stress but in a similar way as in SA birds and increased oxidative damages to DNA. It is concluded that the multifaceted plasticity observed after marine life may be crucial to maintain redox homeostasis in active tissues subjected to high pro-oxidative pressure in diving birds. Initial immersions in cold-water may initiate an hormetic response triggering essential changes in the adaptive antioxidant response to marine life. |
| 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 |
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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 |
0891-5849 |
ISBN |
0891-5849 |
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 |
7221 |
| Permanent link to this record |
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| Author |
Weimerskirch H., Filippi D.P., Collet J., Waugh S.M., Patrick S.C. |
| Title |
Use of radar detectors to track attendance of albatrosses at fishing vessels |
Type |
Journal |
| Year |
2017 |
Publication |
Conservation Biology |
Abbreviated Journal |
|
| Volume |
32 |
Issue |
1 |
Pages |
240-245 |
| Keywords |
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| Abstract |
Abstract Despite international waters covering over 60% of the world's oceans, understanding of how fisheries in these regions shape ecosystem processes is surprisingly poor. Seabirds forage at fishing vessels, which has potentially deleterious effects for their population, but the extent of overlap and behavior in relation to ships is poorly known. Using novel biologging devices, which detect radar emissions and record the position of boats and seabirds, we measured the true extent of the overlap between seabirds and fishing vessels and generated estimates of the intensity of fishing and distribution of vessels in international waters. During breeding, wandering albatrosses (Diomedea exulans) from the Crozet Islands patrolled an area of over 10 million km2 at distances up to 2500 km from the colony. Up to 79.5% of loggers attached to birds detected vessels. The extent of overlap between albatrosses and fisheries has widespread implications for bycatch risk in seabirds and reveals the areas of intense fishing throughout the ocean. We suggest that seabirds equipped with radar detectors are excellent monitors of the presence of vessels in the Southern Ocean and offer a new way to monitor the presence of illegal fisheries and to better understand the impact of fisheries on seabirds. |
| 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 |
0888-8892 |
ISBN |
0888-8892 |
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 |
6667 |
| Permanent link to this record |
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| |
| Author |
Tixier Paul, Gasco Nicolas, Duhamel Guy, Guinet Christophe |
| Title |
Depredation of Patagonian toothfish (Dissostichus eleginoides) by two sympatrically occurring killer whale (Orcinus orca) ecotypes: Insights on the behavior of the rarely observed type D killer whales |
Type |
Journal |
| Year |
2016 |
Publication |
Marine Mammal Science |
Abbreviated Journal |
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| Volume |
32 |
Issue |
3 |
Pages |
983-1003 |
| Keywords |
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| 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 |
0824-0469 |
ISBN |
0824-0469 |
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 |
6629 |
| Permanent link to this record |
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| |
| Author |
Maxence Rojo, Rolanda M. Chondan, Chechek S. Chondan, Alexandra Lavrillier |
| Title |
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Type |
Journal |
| Year |
2016 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
47 |
Pages |
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| Keywords |
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| Abstract |
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| Programme |
1127 |
| 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 |
0766-5075 |
ISBN |
0766-5075 |
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 |
6975 |
| Permanent link to this record |
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| Author |
Alexandra Lavrillier, Semen Gabyshev |
| Title |
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Type |
Journal |
| Year |
2018 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
49 |
Pages |
|
| Keywords |
climate change cognition community-based observatory environmental change hunter predators reindeer herding traditional ecological knowledge transdisciplinarity |
| Abstract |
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| Programme |
1127 |
| 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 |
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ISBN |
0766-5075 |
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 |
7287 |
| Permanent link to this record |
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| Author |
L. Testut, A. S. Unnikrishnan |
| Title |
Improving Modeling of Tides on the Continental Shelf off the West Coast of India |
Type |
Journal |
| Year |
2015 |
Publication |
Journal of Coastal Research (JCR) |
Abbreviated Journal |
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| Volume |
32 |
Issue |
1 |
Pages |
105-115 |
| 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 |
0749-0208, 1551-5036 |
ISBN |
0749-0208, 1551-5036 |
Medium |
|
| 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 |
7068 |
| Permanent link to this record |
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| |
| Author |
L. Testut, A.s. Unnikrishnan |
| Title |
Improving Modeling of Tides on the Continental Shelf off the West Coast of India |
Type |
Journal |
| Year |
2015 |
Publication |
Journal of Coastal Research |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
105-115 |
| 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 |
0749-0208 |
ISBN |
0749-0208 |
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 |
6848 |
| Permanent link to this record |
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| Author |
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| Title |
Measuring the Marine Soundscape of the Indian Ocean with Southern Elephant Seals Used as Acoustic Gliders of Opportunity |
Type |
Journal |
| Year |
2017 |
Publication |
Journal of Atmospheric and Oceanic Technology |
Abbreviated Journal |
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| Volume |
34 |
Issue |
1 |
Pages |
207-223 |
| Keywords |
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| Abstract |
The underwater ambient sound field contains quantifiable information about the physical and biological marine environment. The development of operational systems for monitoring in an autonomous way the underwater acoustic signal is necessary for many applications, such as meteorology and biodiversity protection. This paper develops a proof-of-concept study on performing marine soundscape analysis from acoustic passive recordings of free-ranging biologged southern elephant seals (SES). A multivariate multiple linear regression (MMLR) framework is used to predict the measured ambient noise, modeled as a multivariate acoustic response, from SES (depth, speed, and acceleration) and environmental (wind) variables. Results show that the acoustic contributions of SES variables affect mainly low-frequency sound pressure levels (SPLs), while frequency bands above 3 kHz are less corrupted by SES displacement and allow a good measure of the Indian Ocean soundscape. Also, preliminary results toward the development of a mobile embedded weather sensor are presented. In particular, wind speed estimation can be performed from the passive acoustic recordings with an accuracy of 2 m s?1, using a rather simple multiple linear model. |
| 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 |
0739-0572 |
ISBN |
0739-0572 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
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Serial |
6634 |
| Permanent link to this record |
