Home << 1 2 3 4 5 6 7 8 9 10 >> [11–20]
List View
 | 
Citations
 | 
Details
   web
Records
Author
Title Type Master 2
Year 2020 Publication Abbreviated Journal
Volume Issue (up) Pages 48 pp
Keywords
Abstract
Programme 1044
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 8060
Permanent link to this record
 
 
Author Meudec L.
Title Type Master 1
Year 2020 Publication Abbreviated Journal
Volume Issue (up) Pages 13 pp
Keywords
Abstract
Programme 1044
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 8061
Permanent link to this record
 
 
Author Natacha Garcin
Title The effects of stress hormones on king penguin's growth, energetics and ageing rate Type Master 2
Year 2020 Publication Abbreviated Journal
Volume Issue (up) Pages 35
Keywords
Abstract Stress exposure and stress response are likely to vary according to life history strategies and across environmental contexts. If the release of glucocorticoids (e.g. corticosterone, CORT) in response to acute stress enables animals to rightfully cope with the situation, chronic exposure to high CORT levels can lead to deleterious cascading effects on animal’s physiology, behavior and fitness. Some species may be more adapted to cope with stressful events than others and might exhibit natural adaptations to limit the adverse consequences of prolonged high CORT levels. The aim of this study was to investigate the effects of experimentally elevated CORT levels on the growth, energetics and ageing of king penguin chicks (Aptenodytes patagonicus), using sub-cutaneous CORT implants. We investigated the effects of CORT both on the medium (23 days
after implant) and the long-term (fledging: ~ 200 days after the implant) on morphological (i.e. body mass and size), behavioral (i.e. aggressivity, physical activity) and physiological traits (i.e. heart rate, CORT response to acute stress, oxidative stress, mitochondrial density and telomere length). Although CORT-treated chicks were taller, more aggressive and displayed lower CORT response to acute stress on the medium-term, there was no significant impact of CORT on the body mass and whole-body energetics assessed through heart rate and physical activity. Moreover, CORT chicks displayed lower oxidized glutathione on the medium and long-term, thus indirectly preventing
oxidative damage, while telomere length and mitochondrial density were not influenced by CORT implants. Although chronic elevation of glucocorticoid levels is mostly known to result in negative physiological and behavioral outcomes, our results indicating some positive effects of CORT implants are consistent with the hypothesis that species who encounter several noxious stressors in their environment, could be naturally adapted to cope with them. The growth-enhancing effect of CORT might be mediated by a higher efficiency at which food is assimilated and/or used, and CORT chicks might benefit from aggressive behaviors during competitive interactions or predation
encounters. Through the antioxidant glutathione system, CORT treated chicks seem to have developed a resistance to oxidative stress that could last over time (i.e. possibly through a reduction
of ROS production). While CORT implants did not accelerate ageing or bring short and mediumterm costs, possible long lasting programming effects of CORT should be further investigated.
Programme 119
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 8101
Permanent link to this record
 
 
Author
Title The emperor penguin – Vulnerable to projected rates of warming and sea ice loss Type Journal
Year 2020 Publication Biological Conservation Abbreviated Journal
Volume 241 Issue (up) Pages 108216
Keywords Antarctic Climate change Conservation IUCN Red List threat status Protection
Abstract We argue the need to improve climate change forecasting for ecology, and importantly, how to relate long-term projections to conservation. As an example, we discuss the need for effective management of one species, the emperor penguin, Aptenodytes forsteri. This species is unique amongst birds in that its breeding habit is critically dependent upon seasonal fast ice. Here, we review its vulnerability to ongoing and projected climate change, given that sea ice is susceptible to changes in winds and temperatures. We consider published projections of future emperor penguin population status in response to changing environments. Furthermore, we evaluate the current IUCN Red List status for the species, and recommend that its status be changed to Vulnerable, based on different modelling projections of population decrease of ?50% over the current century, and the specific traits of the species. We conclude that current conservation measures are inadequate to protect the species under future projected scenarios. Only a reduction in anthropogenic greenhouse gas emissions will reduce threats to the emperor penguin from altered wind regimes, rising temperatures and melting sea ice; until such time, other conservation actions are necessary, including increased spatial protection at breeding sites and foraging locations. The designation of large-scale marine spatial protection across its range would benefit the species, particularly in areas that have a high probability of becoming future climate change refugia. We also recommend that the emperor penguin is listed by the Antarctic Treaty as an Antarctic Specially Protected Species, with development of a species Action Plan.
Programme 137,394
Campaign
Address
Corporate Author Thesis Bachelor's thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0006-3207 ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7678
Permanent link to this record
 
 
Author Hanane Marif, Jean Lilensten
Title Suprathermal electron moments in the ionosphere Type Journal
Year 2020 Publication Journal of Space Weather and Space Climate Abbreviated Journal
Volume 10 Issue (up) Pages 22
Keywords
Abstract
Programme 1026
Campaign
Address
Corporate Author Thesis Bachelor's thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2115-7251 ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7679
Permanent link to this record
 
 
Author C. Michelot, A. Kato, T. Raclot, K. Shiomi, P. Goulet, P. Bustamante, Y. Ropert-Coudert
Title Type Journal
Year 2020 Publication Marine Ecology Progress Series Abbreviated Journal
Volume 640 Issue (up) Pages 215-230
Keywords Colony Diet GPS Incubation trip Pygoscelis adeliae Sea-ice edge Stable isotopes
Abstract
Programme 1091
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0171-8630, 1616-1599 ISBN 0171-8630, 1616-1599 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7680
Permanent link to this record
 
 
Author Zhiyong Xie, Zhen Wang, Olivier Magand, Alban Thollot, Ralf Ebinghaus, Wenying Mi, Aurelien Dommergue
Title Occurrence of legacy and emerging organic contaminants in snow at Dome C in the Antarctic Type Journal
Year 2020 Publication Science of The Total Environment Abbreviated Journal
Volume 741 Issue (up) Pages 140200
Keywords Antarctic Organophosphate esters PAH PFAS Snow
Abstract
Programme 1028
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0048-9697 ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7685
Permanent link to this record
 
 
Author Stefano Santini, Michele Dragoni
Title Moment rate of the 2018 Gulf of Alaska earthquake Type Journal
Year 2020 Publication Physics of the Earth and Planetary Interiors Abbreviated Journal
Volume 298 Issue (up) Pages 106336
Keywords Asperity models Fault mechanics Nonlinear dynamical systems Seismic moment rates Theoretical seismology
Abstract
Programme 133
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0031-9201 ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7687
Permanent link to this record
 
 
Author
Title Type Journal
Year 2020 Publication Antarctic Science Abbreviated Journal
Volume Issue (up) Pages 1-14
Keywords cosmogenic nuclide dating deglaciation exhumation fission-track dating Late Palaeozoic Ice Age subglacial incision
Abstract
Programme 1003
Campaign
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0954-1020, 1365-2079 ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7692
Permanent link to this record
 
 
Author Valentin Wierner
Title Type Master
Year 2020 Publication Master's report Abbreviated Journal
Volume Issue (up) Pages
Keywords
Abstract
Programme 1013
Campaign
Address
Corporate Author Thesis Bachelor's thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7743
Permanent link to this record