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Title |
Tracking Five Millennia of Horse Management with Extensive Ancient Genome Time Series |
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Journal |
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Year |
2019 |
Publication |
Cell |
Abbreviated Journal |
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Volume |
177 |
Issue |
6 |
Pages |
1419-1435.e31 |
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Keywords |
ancient DNA animal breeding diversity domestication equestrian civilizations extinct lineages horses management mules selection |
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1038 |
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0092-8674, 1097-4172 |
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yes |
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8011 |
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A dedicated robust instrument for water vapor generation at low humidity for use with a laser water isotope analyzer in cold and dry polar regions |
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Journal |
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Year |
2021 |
Publication |
Atmospheric Measurement Techniques |
Abbreviated Journal |
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Volume |
14 |
Issue |
4 |
Pages |
2907-2918 |
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Programme |
1110,1169,1205 |
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Bachelor's thesis |
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ISSN |
1867-1381 |
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yes |
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Serial |
8010 |
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Title |
Diving Behavior of Mirounga leonina: A Functional Data Analysis Approach |
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Journal |
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Year |
2020 |
Publication |
Frontiers in Marine Science |
Abbreviated Journal |
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Volume |
7 |
Issue |
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Pages |
595 |
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Abstract |
The diving behavior of southern elephant seals, Mirounga leonina, is investigated through the analysis of time-depth dive profiles. The originality of this work is to consider dive profiles as continuous curves. For this purpose, a Functional Data Analysis (FDA) approach is proposed for the shape analysis of a collection of dive profiles. Complexity of dive shapes is characterized by a mixture of three main shape variations accounting for about 80% of the entire variability: U or V shape, vertical depth variability during the bottom time, and skewed left or right. Model-based clustering allows the identification of eight dive shape clusters in a quick and automated way. Connection between shape patterns and classical descriptors, as well as the number of prey capture events, is achieved, showing that the clusters are coherent to specific foraging behaviors previously identified in the literature labeled as drift, exploratory and active dives. Finally, FDA is compared to classical methods relying on the computation of discrete dive descriptors. Results show that taking the shape of the dive as a whole is more resilient to corrupted or incomplete sampled data. FDA is, therefore, an efficient tool adapted for processing and comparing dive data with different sampling frequencies and for improving the quality and the accuracy of transmitted data. |
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1201 |
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ISSN |
2296-7745 |
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yes |
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Serial |
8009 |
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Author |
Pauline Goulet, Christophe Guinet, Claudio Campagna, Julieta Campagna, Peter Lloyd Tyack, Mark Johnson |
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Title |
Flash and grab: deep-diving southern elephant seals trigger anti-predator flashes in bioluminescent prey |
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Journal |
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Year |
2020 |
Publication |
Journal of Experimental Biology |
Abbreviated Journal |
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Volume |
223 |
Issue |
10 |
Pages |
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Abstract |
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Programme |
1201 |
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ISSN |
0022-0949 |
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yes |
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Serial |
8008 |
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Author |
Angus F. Henderson, Clive R. McMahon, Rob Harcourt, Christophe Guinet, Baptiste Picard, Simon Wotherspoon, Mark A. Hindell |
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Title |
Inferring Variation in Southern Elephant Seal At-Sea Mortality by Modelling Tag Failure |
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Journal |
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Year |
2020 |
Publication |
Frontiers in Marine Science |
Abbreviated Journal |
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Volume |
7 |
Issue |
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Pages |
796 |
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Abstract |
Identifying factors influencing survivorship is key to understanding population persistence. Although satellite telemetry is a powerful tool for studying remote animal ecology and behaviour it is rarely used for demographic studies because distinguishing the death of the animal (individual mortality) from failure of the tag (mechanical tag failure) has proven difficult. Southern elephant seals present an opportunity to separate tag failure from animal mortality thanks to the availability of large tracking datasets, broad knowledge of demographic rates, and because for these large animals, satellite tags are known not to influence mortality rates. A key rationale for investigating satellite telemetry to estimate mortality as compared to using traditional Capture-Mark-Recapture methods is the potential for obtaining spatially and temporally specific information, particularly while the animals are at sea and largely unobservable. We used satellite tag data from 182 seals from Isles Kerguelen, deployed between 2004 and 2018. Of these, 76 (42%) tags transmitted for the full post-moult foraging trip (max. 265 days for females and max. 305 days for sub-adult males) with the remaining 107 tags (58%) ceasing transmission at sea. We found that contrary to expectations, behavioural choices seem not to influence tag failure rates by mechanical means, rather the signals we detected seemed to align with previously described variation in mortality between groups. There was evidence, albeit limited, for an increase in tag failure for adult females in years with negative Southern Annular Mode (lower Southern Ocean productivity). We speculate that this increase in failure may suggest higher mortality in these years. Also, males using the Kerguelen Plateau had higher tag failure rates than those in the sea-ice zone, perhaps indicative of higher mortality. We suspect that these differences in tag failure rates between groups reflect variation in predator exposure and foraging success. This suggests satellite telemetry could be used to infer mortality events for southern elephant seals while they are at sea. |
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1201 |
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ISSN |
2296-7745 |
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Approved |
yes |
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Call Number |
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Serial |
8007 |
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Author |
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Title |
Decadal changes in blood ?13C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands |
Type |
Journal |
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Year |
2020 |
Publication |
Proceedings of the Royal Society B: Biological Sciences |
Abbreviated Journal |
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Volume |
287 |
Issue |
1933 |
Pages |
20201544 |
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Keywords |
bio-logging decadal change foraging habitat Indian sector of the Southern Ocean population strategies stable isotopes |
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Abstract |
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Programme |
109,1201 |
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Thesis |
Bachelor's thesis |
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Approved |
yes |
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Call Number |
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Serial |
8006 |
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Title |
Is the southern crab Halicarcinus planatus (Fabricius, 1775) the next invader of Antarctica? |
Type |
Journal |
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Year |
2021 |
Publication |
Global Change Biology |
Abbreviated Journal |
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Volume |
27 |
Issue |
15 |
Pages |
3487-3504 |
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Keywords |
climate change establishment niche modelling non-native species reptant crab Southern Ocean survival thermotolerance |
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Abstract |
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Programme |
1044 |
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ISSN |
1365-2486 |
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Approved |
yes |
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Call Number |
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Serial |
8005 |
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Title |
Divergence time and species delimitation of microbivalves in the Southern Ocean: the case of Kidderia species |
Type |
Journal |
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Year |
2021 |
Publication |
Polar Biology |
Abbreviated Journal |
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Volume |
44 |
Issue |
7 |
Pages |
1365-1377 |
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Keywords |
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Abstract |
The systematics of Subantarctic and Antarctic near-shore marine benthic invertebrates requires major revision and highlights the necessity to incorporate additional sources of information in the specimen identification chart in the Southern Ocean (SO). In this study, we aim to improve our understanding of the biodiversity of Kidderia (Dall 1876) through molecular and morphological comparisons of Antarctic and Subantarctic taxa. The microbivalves of the genus Kidderia are small brooding organisms that inhabit intertidal and shallow subtidal rocky ecosystems. This genus represents an interesting model to test the vicariance and dispersal hypothesis in the biogeography of the SO. However, the description of Kidderia species relies on a few morphological characters and biogeographic records that raise questions about the true diversity in the group. Here we will define the specimens collected with genetic tools, delimiting their respective boundaries across provinces of the SO, validating the presence of two species of Kidderia. Through the revision of taxonomic issues and species delimitation, it was possible to report that the Antarctic species is Kidderia subquadrata and the species recorded in the Subantarctic islands Diego Ramirez, South Georgia and the Kerguelen Archipelago is Kidderia minuta. The divergence time estimation suggests the origin and diversification of Kidderia lineages are related to historical vicariant processes probably associated with the separation of the continental landmasses close to the late Eocene. |
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Programme |
1044 |
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Edition |
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ISSN |
1432-2056 |
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Approved |
yes |
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Call Number |
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Serial |
8004 |
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Title |
Recent Climate Variability around the Kerguelen Islands (Southern Ocean) Seen through Weather Regimes |
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Journal |
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Year |
2021 |
Publication |
Journal of Applied Meteorology and Climatology |
Abbreviated Journal |
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Volume |
60 |
Issue |
5 |
Pages |
711-731 |
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Programme |
688,1044,1048 |
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Thesis |
Bachelor's thesis |
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Edition |
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ISSN |
1558-8424 |
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Approved |
yes |
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Call Number |
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Serial |
8003 |
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Title |
Individual-based model of population dynamics in a sea urchin of the Kerguelen Plateau (Southern Ocean), Abatus cordatus, under changing environmental conditions |
Type |
Journal |
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Year |
2021 |
Publication |
Ecological Modelling |
Abbreviated Journal |
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Volume |
440 |
Issue |
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Pages |
109352 |
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Keywords |
Climate change Dynamic energy budget Ecological modelling Endemic echinoderm Individual-based model Kerguelen Model sensitivity |
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Abstract |
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Programme |
1044 |
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ISSN |
0304-3800 |
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yes |
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Call Number |
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Serial |
8002 |
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| Permanent link to this record |
