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  1. Book ; Online: Immobilisation data of juvenile and adult male and female Weddell seals at Drescher Inlet from expeditions DRE1990 and DRE1992, supplementary data to: Bornemann, Horst; Pl?tz, Joachim (1993): A field method for immobilizing Weddell seals. Wildlife Society Bulletin, 21(4), 437-441

    Bornemann, Horst / Pl?tz, Joachim

    2007  

    Abstract: Fourten Weddell seals (Leptonychotes weddellii) and two crabeater seals (Lobodon carcinophaga) were immobilised at Drescher Inlet (Riiser Larsen Ice Shelf), eastern Weddell Sea coast, between January and February 1990 using a combination of ketamine, ... ...

    Abstract Fourten Weddell seals (Leptonychotes weddellii) and two crabeater seals (Lobodon carcinophaga) were immobilised at Drescher Inlet (Riiser Larsen Ice Shelf), eastern Weddell Sea coast, between January and February 1990 using a combination of ketamine, xylazine, and diazepam. Eleven Weddell seals were drugged once, and two and one were drugged two and three times each, coming to a total of 18 immobilisation procedures. Another 16 seals were immobilised between January and February 1992. Ten seals were drugged once, and three and two were drugged two and three times each, coming to a total of 25 immobilisation procedures. Narcoses were terminated with yohimbine. Data as given by doi:10.1594/PANGAEA.438920 were selected for publication. Data sets doi:10.1594/PANGAEA.438921 and doi:10.1594/PANGAEA.438926 followed the same methods and dose regimes.
    Language English
    Dates of publication 2007-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is supplement to hdl:10013/epic.10997.d001
    DOI 10.1594/PANGAEA.603346
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  2. Book ; Online: Luminous intensity and dive depth profile data of emperor penguins from Pointe G?ologie, Ad?lie Land, Antarctica, from expedition DDU 2005, supplementary data to: Zimmer, Ilka; Wilson, Rory P; Beaulieu, Micha?l; Ancel, Andr?; Pl?tz, Joachim (2008): Seeing the light: depth and time restrictions in the foraging capacity of emperor penguins at Pointe G?ologie, Antarctica. Aquatic Biology, 3(3), 217-226

    Zimmer, Ilka / Ancel, Andr? / Beaulieu, Micha?l / Pl?tz, Joachim / Wilson, Rory P

    2008  

    Abstract: The foraging ability of visual hunters depends critically on light conditions. Emperor penguins Aptenodytes forsteri are reported to be visual hunters, but breed and forage at high latitudes and are thus exposed to extreme changes in light conditions in ... ...

    Abstract The foraging ability of visual hunters depends critically on light conditions. Emperor penguins Aptenodytes forsteri are reported to be visual hunters, but breed and forage at high latitudes and are thus exposed to extreme changes in light conditions in the course of the year. We examined how light influenced the foraging ability of breeding emperor penguins using loggers in winter (n = 5) and spring (n = 4) 2005 (see doi:10.1594/PANGAEA.633713) at Pointe G?ologie (66? 40' S, 140? 01' E), Antarctica, as well as by using models of light availability over the year and as a function of depth. The model showed that daylight was continuous between days of the year 350 and 363 and that the sun did not rise between days of the year 166 and 180. Logger-measured light intensity decreased with water depth, and depth-specific values were higher at greater sun elevation angles. Depth-time use (given by the maximum depth reached multiplied by the number of hours at which this depth could be achieved over 24 h) of spring-foraging penguins was 8394.5 m x h, which was more than twice that of winter-foraging birds at 3845.4 m x h, showing the severe constraints imposed by winter conditions. Average catch-per-unit effort was related to mean maximum diving depth and was highest around mid-day in winter and highest during dawn and dusk in spring. This reflects availability of prey to foraging emperor penguins.
    Language English
    Dates of publication 2008-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is supplement to doi:10.3354/ab00082
    DOI 10.1594/PANGAEA.701333
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  3. Book ; Online: Dive depth profile and at surface behaviour data of emperor penguins from Pointe G?ologie, Ad?lie Land, Antarctica, from expedition DDU 2005, supplementary data to: Zimmer, Ilka; Wilson, Rory P; Beaulieu, Micha?l; Ropert-Coudert, Yan; Kato, Akiko; Ancel, Andr?; Pl?tz, Joachim (2010): Dive efficiency versus depth in foraging emperor penguins. Aquatic Biology, 8, 269-277

    Zimmer, Ilka / Ancel, Andr? / Beaulieu, Micha?l / Bornemann, Horst / Pl?tz, Joachim / Wilson, Rory P

    2010  

    Abstract: Adult male and female emperor penguins (Aptenodytes forsteri) were fitted with satellite transmitters at Pointe-G?ologie (Ad?lie Land), Dumont d'Urville Sea coast, in November 2005. Nine of 30 data sets were selected for analyses to investigate the ... ...

    Abstract Adult male and female emperor penguins (Aptenodytes forsteri) were fitted with satellite transmitters at Pointe-G?ologie (Ad?lie Land), Dumont d'Urville Sea coast, in November 2005. Nine of 30 data sets were selected for analyses to investigate the penguins' diving behaviour at high resolution (doi:10.1594/PANGAEA.633708, doi:10.1594/PANGAEA.633709, doi:10.1594/PANGAEA.633710, doi:10.1594/PANGAEA.633711). The profiles are in synchrony with foraging trips of the birds during austral spring (doi:10.1594/PANGAEA.472171, doi:10.1594/PANGAEA.472173, doi:10.1594/PANGAEA.472164, doi:10.1594/PANGAEA.472160, doi:10.1594/PANGAEA.472161). Corresponding high resolution winter data (n = 5; archived elsewhere) were provided by A. Ancel, Centre d'Ecologie et Physiologie Energ?tiques, CNRS, Strasbourg, France. Air-breathing divers tend to increase their overall dive duration with increasing dive depth. In most penguin species, this occurs due to increasing transit (descent and ascent) durations but also because the duration of the bottom phase of the dive increases with increasing depth. We interpreted the efficiency with which emperor penguins can exploit different diving depths by analysing dive depth profile data of nine birds studied during the early and late chick-rearing period in Ad?lie Land, Antarctica. Another eight datasets of dive depth and duration frequency recordings (doi:10.1594/PANGAEA.472150, doi:10.1594/PANGAEA.472152, doi:10.1594/PANGAEA.472154, doi:10.1594/PANGAEA.472155, doi:10.1594/PANGAEA.472142, doi:10.1594/PANGAEA.472144, doi:10.1594/PANGAEA.472146, doi:10.1594/PANGAEA.472147), which backup the analysed high resolution depth profile data, and dive depth and duration frequency recordings of another bird (doi:10.1594/PANGAEA.472156, doi:10.1594/PANGAEA.472148) did not match the requirement of high resolution for analyses. Eleven additional data sets provide information on the overall foraging distribution of emperor penguins during the period analysed (doi:10.1594/PANGAEA.472157, doi:10.1594/PANGAEA.472158, doi:10.1594/PANGAEA.472162, doi:10.1594/PANGAEA.472163, doi:10.1594/PANGAEA.472166, doi:10.1594/PANGAEA.472167, doi:10.1594/PANGAEA.472168, doi:10.1594/PANGAEA.472170, doi:10.1594/PANGAEA.472172, doi:10.1594/PANGAEA.472174, doi:10.1594/PANGAEA.472175).
    Language English
    Dates of publication 2010-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is supplement to doi:10.3354/ab00213
    DOI 10.1594/PANGAEA.633713
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  4. Book ; Online: At surface behaviour of emperor penguins from Pointe G?ologie, Ad?lie Land, Antarctica, from expedition DDU 2005, supplementary data to: Zimmer, Ilka; Wilson, Rory P; Gilbert, Caroline; Beaulieu, Micha?l; Ancel, Andr?; Pl?tz, Joachim (2008): Foraging movements of emperor penguins at Pointe G?ologie, Antarctica. Polar Biology, 31(2), 229-243

    Zimmer, Ilka / Ancel, Andr? / Beaulieu, Micha?l / Bornemann, Horst / Gilbert, Caroline / Pl?tz, Joachim / Wilson, Rory P

    2008  

    Abstract: The foraging distributions of 20 breeding emperor penguins were investigated at Pointe G?ologie, Terre Ad?lie, Antarctica by using satellite telemetry in 2005 and 2006 during early and late winter, as well as during late spring and summer, corresponding ... ...

    Abstract The foraging distributions of 20 breeding emperor penguins were investigated at Pointe G?ologie, Terre Ad?lie, Antarctica by using satellite telemetry in 2005 and 2006 during early and late winter, as well as during late spring and summer, corresponding to incubation, early chick-brooding, late chick-rearing and the adult pre-moult period, respectively. Dive depth records of three post-egg-laying females, two post-incubating males and four late chick-rearing adults were examined, as well as the horizontal space use by these birds. Foraging ranges of chick-provisioning penguins extended over the Antarctic shelf and were constricted by winter pack-ice. During spring ice break-up, the foraging ranges rarely exceeded the shelf slope, although seawater access was apparently almost unlimited. Winter females appeared constrained in their access to open water but used fissures in the sea ice and expanded their prey search effort by expanding the horizontal search component underwater. Birds in spring however, showed higher area-restricted-search than did birds in winter. Despite different seasonal foraging strategies, chick-rearing penguins exploited similar areas as indicated by both a high 'Area-Restricted-Search Index' and high 'Catch Per Unit Effort'. During pre-moult trips, emperor penguins ranged much farther offshore than breeding birds, which argues for particularly profitable oceanic feeding areas which can be exploited when the time constraints imposed by having to return to a central place to provision the chick no longer apply.
    Language English
    Dates of publication 2008-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is supplement to doi:10.1007/s00300-007-0352-5
    DOI 10.1594/PANGAEA.633712
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  5. Book ; Online: Dive track profile, intermandibular angel sensor profile and immobilisation data of adult female Weddell seals at Drescher Inlet from expedition DRE2003, supplementary data to: Liebsch, Nikolai S; Wilson, Rory P; Bornemann, Horst; Adelung, Dieter; Pl?tz, Joachim (2007): Mouthing off about fish capture: Jaw movement in pinnipeds reveal the real secrets of ingestion. Deep Sea Research Part II: Topical Studies in Oceanography, 54(3-4), 256-269

    Liebsch, Nikolai S / Adelung, Dieter / Bornemann, Horst / Pl?tz, Joachim / Watanabe, Yuuki / Wilson, Rory P

    2007  

    Abstract: Determination of when and where animals feed and how much they consume is fundamental to understand their ecology and role in ecosystems. However, the lack of reliable data on feeding habits of wild animals, and particularly in marine endotherms, attests ...

    Abstract Determination of when and where animals feed and how much they consume is fundamental to understand their ecology and role in ecosystems. However, the lack of reliable data on feeding habits of wild animals, and particularly in marine endotherms, attests to the difficulty in doing this. A promising recent development proposes using a Hall sensor-magnet System - the inter-mandibular angle sensor (IMASEN) attached to animals' jaws to elucidate feeding events. We conducted trials on captive pinnipeds by feeding IMASEN-equipped animals with prey to examine the utility of this system. Most feeding events were clearly distinguishable from other jaw movements; only small prey items might not be resolved adequately. Based on the results of this study we examined feeding events from free-ranging Weddell seals fitted with IMASENs and dead-reckoners during December 2003 at Drescher Inlet (Riiser Larsen Ice Shelf, eastern Weddell Sea coast), and present data on prey capture and ingestion in relation to the three-dimensionalmovement patterns of the seals. A total of 19 Weddell seals were immobilised by using a combination of ketamine, xylazine, and diazepam. Eight seals were drugged once, six two times, and two and three were drugged three and four times each, coming to a total of 38 immobilisation procedures. Narcoses were terminated with yohimbine (doi:10.1594/PANGAEA.438931).

    REFERENCE:
    Pl?tz, Joachim; Bornemann, Horst; Liebsch, Nikolai S; Watanabe, Yuuki (2005): Foraging ecology of Weddell seals. In: Arntz, WE & Brey, T (2005): The Expedition ANTARKTIS XXI/2 (Bendex) of RV Polarstern in 2003/2004, Reports on Polar and Marine Research, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, 503, 63-67
    Liebsch, Nikolai S (2006): Hankering back to ancestral pasts: constraints on two pinnipeds, Phoca vitulina & Leptonychotes weddellii foraging from a central place. PhD Thesis, Mathematisch-Naturwissenschaftliche Fakult?t der Christian-Albrechts-Universit?t zu Kiel, 161 pp
    Language English
    Dates of publication 2007-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is cited by hdl:10013/epic.22773.d001 ; This dataset is cited by urn:urn:nbn:de:gbv:8-diss-18606 ; This dataset is supplement to doi:10.1016/j.dsr2.2006.11.014
    DOI 10.1594/PANGAEA.603115
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  6. Book ; Online: Dive depth profile, stomach temperature profile and immobilisation data of adult male and female Weddell seals at Drescher Inlet from expedition DRE1995, supplementary data to: Bornemann, Horst; Mohr, Elmar; Pl?tz, Joachim; Krause, Gunther (1998): The tide as zeitgeber for Weddell seals. Polar Biology, 20(6), 396-403

    Bornemann, Horst / Krause, Gunther / Mohr, Elmar / Pl?tz, Joachim

    1998  

    Abstract: Adult male and female Weddell seals (Leptonychotes weddellii) were fitted with Time-depth (TDR) and Stomach temperature recorders (STR) at Drescher Inlet (Riiser Larsen Ice Shelf), eastern Weddell Sea coast, between January and March 1995. Ten of 15 data ...

    Abstract Adult male and female Weddell seals (Leptonychotes weddellii) were fitted with Time-depth (TDR) and Stomach temperature recorders (STR) at Drescher Inlet (Riiser Larsen Ice Shelf), eastern Weddell Sea coast, between January and March 1995. Ten of 15 data sets were selected for analyses to investigate the seals' haul-out and underwater activity patterns in relation to the tide (doi:10.1594/PANGAEA.511417, doi:10.1594/PANGAEA.511426, doi:10.1594/PANGAEA.511428, doi:10.1594/PANGAEA.511430, doi:10.1594/PANGAEA.511432, doi:10.1594/PANGAEA.511441, doi:10.1594/PANGAEA.511444, doi:10.1594/PANGAEA.511450, doi:10.1594/PANGAEA.511452, doi:10.1594/PANGAEA.511472). These data sets provided simultaneous dive depth and stomach temperature records of five seals. Diving and temperature data were analysed with the help of time series analyses tools. We identified a half-day (semicircadian) rhythm in underwater activity and body temperature. A close correlation was found between the rhythmicity of the tide and the timing of the seals' underwater activity and oscillations of their body temperature. We propose that the tide is the principal zeitgeber for the Weddell seals' ultradian cycle of behaviour during the austral summer. Another seven data sets did not match with the requirement of synchronous dive depth and stomach temperature recordings (doi:10.1594/PANGAEA.511451, doi:10.1594/PANGAEA.511429, doi:10.1594/PANGAEA.511446, doi:10.1594/PANGAEA.511447, doi:10.1594/PANGAEA.511448). A total of 13 Weddell seals were immobilised during the study period using a combination of ketamine, xylazine, and diazepam. Eleven seals were drugged once, and two were drugged two times, coming to a total of 15 immobilisation procedures. Narcoses were terminated with yohimbine (doi:10.1594/PANGAEA.438927).
    Language English
    Dates of publication 1998-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is supplement to doi:10.1007/s003000050320
    DOI 10.1594/PANGAEA.603345
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  7. Book ; Online: At surface behaviour of juvenile and female southern elephant seals from King George Island from expeditions JUB1996 and JUB1997, supplementary data to: Bornemann, Horst; Kreyscher, Martin; Ramdohr, Sven; Martin, Thomas; Carlini, Alejandro R; Sellmann, Lutz; Pl?tz, Joachim (2000): Southern elephant seal movements and Antarctic sea ice. Antarctic Science, 12(1), 3-15

    Bornemann, Horst / Carlini, Alejandro R / Kreyscher, Martin / Martin, Thomas / Pl?tz, Joachim / Ramdohr, Sven / Sellmann, Lutz

    2000  

    Abstract: Between December 1996 and February 1997, weaned pups and postmoult female southern elephant seals (Mirounga leonina) were fitted with satellite transmitters at King George Island (South Shetlands). Of the nine adult females tracked for more than two ... ...

    Abstract Between December 1996 and February 1997, weaned pups and postmoult female southern elephant seals (Mirounga leonina) were fitted with satellite transmitters at King George Island (South Shetlands). Of the nine adult females tracked for more than two months, three stayed in a localized area between the South Shetlands and the South Orkneys. The other six females travelled southwest along the coast of the Antarctic Peninsula up to the Bellingshausen Sea. Two of them then moved far northeast and hauled out on South Georgia in October. One female was last located north of the South Shetlands in March 1998. In total, eight females were again sighted on King George Island and six of the transmitters removed. The tracks of the weaners contrasted with those of the adults. In January, five juveniles left King George Island for the Pacific sector ranging about four weeks in the open sea west of the De Gerlache Seamounts. Three of them returned to the tip of the Antarctic Peninsula in June, of which one was last located on the Patagonian Shelf in November 1997. A computer animation was developed to visualize the animal movements in relation to the extent and concentration of sea ice. The juveniles avoided sea ice while the adults did not. The latter displayed behavioural differences in using the pack ice habitat during winter. Some females adjusted their movement patterns to the pulsating sea ice fringe in far-distant foraging areas while others ranged in closed pack ice of up to 100 %. The feeding grounds of adult female elephant seals are more closely associated with the pack ice zone than previously assumed.
    Language English
    Dates of publication 2000-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is supplement to doi:10.1017/S095410200000002X
    DOI 10.1594/PANGAEA.586824
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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