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  • 1
    Monograph available for loan
    Monograph available for loan
    Coupling processes in the lower and middle atmosphere : [Proceedings of the NATO Advanced Research Workshop on Coupling Processes in the Lower and Middle Atmosphere, Loen, Norway, May 25-30, 1992] (1993)
    Dordrecht [u.a.] : Kluwer
    Associated volumes
    Details Availability
    Call number: AWI A6-93-0262
    In: NATO ASI series
    Type of Medium: Monograph available for loan
    Pages: X, 410 S.
    ISBN: 0792321278
    Series Statement: NATO ASI series : series C: Mathematical and physical sciences 387
    Branch Library: AWI Library
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  • 2
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    Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea (2016)
    PANGAEA
    In:  Supplement to: Gurarie, Eliezer; Bengtson, John L; Bester, Marthán Nieuwoudt; Blix, Arnoldus Schytte; Cameron, Michael; Bornemann, Horst; Nordøy, Erling Sverre; Plötz, Joachim; Steinhage, Daniel; Boveng, Peter (2016): Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea. Polar Biology, 40(5), 1149-1165, https://doi.org/10.1007/s00300-016-2029-4
    Details
    Publication Date: 2023-04-21
    Description: The Antarctic Pack Ice Seal (APIS) Program was initiated in 1994 to estimate the abundance of four species of Antarctic phocids: the crabeater seal Lobodon carcinophaga, Weddell seal Leptonychotes weddellii, Ross seal Ommatophoca rossii and leopard seal Hydrurga leptonyx and to identify ecological relationships and habitat use patterns. The Atlantic sector of the Southern Ocean (the eastern sector of the Weddell Sea) was surveyed by research teams from Germany, Norway and South Africa using a range of aerial methods over five austral summers between 1996-1997 and 2000-2001. We used these observations to model densities of seals in the area, taking into account haul-out probabilities, survey-specific sighting probabilities and covariates derived from satellite-based ice concentrations and bathymetry. These models predicted the total abundance over the area bounded by the surveys (30°W and 10°E). In this sector of the coast, we estimated seal abundances of: 514 (95 % CI 337-886) x 10**3 crabeater seals, 60.0 (43.2-94.4) x 10**3 Weddell seals and 13.2 (5.50-39.7) x 10**3 leopard seals. The crabeater seal densities, approximately 14,000 seals per degree longitude, are similar to estimates obtained by surveys in the Pacific and Indian sectors by other APIS researchers. Very few Ross seals were observed (24 total), leading to a conservative estimate of 830 (119-2894) individuals over the study area. These results provide an important baseline against which to compare future changes in seal distribution and abundance.
    Keywords: Marine Mammal Tracking; MMT
    Type: Dataset
    Format: application/zip, 7 datasets
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  • 3
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    Stable isotopes (δ15N and δ13C) from the baleen of North Atlantic minke whales (Balaenoptera acutorostrata) (2021)
    PANGAEA
    Details
    Publication Date: 2023-03-25
    Description: This data set contains stable isotope values (δ15N and δ13C) from the baleen of fifteen North Atlantic minke whales (Balaenoptera acutorostrata). The whales were taken under scientific permit from the Norwegian Ministry of Fisheries, as part of the Norwegian Scientific Whaling Program (1988-1994), in various locations in Lofoten/Vesterålen (L/V) (67°30”-69°00”N; 12°00”-15°30”°E) and in Svalbard (S) (76°00”-79°30”N; 09°00”-18°00”E), in July and August of 1992. The longest baleen plate from each whale was pre-treated and sampled at one centimeter increments along the labial edge of the plate for the full length of the plate, as per methods used for Pacific minke whales (Mitani et al. 2006). Analysis of these stable isotope values was used to understand feeding and movement patterns of minke whales caught along the coast of Northern Norway and Svalbard.
    Keywords: Balaenoptera acutorostrata, baleen, carbon, total; Balaenoptera acutorostrata, baleen, nitrogen, total; Balaenoptera acutorostrata, baleen, sampling distance; Balaenoptera acutorostrata, baleen, δ13C; Balaenoptera acutorostrata, baleen, δ15N; baleen; Date; Date/Time of event; Element analyser CHN (Costech 4010) coupled in continuous flow to a Thermo Scientific Delta V Advantage isotope ratio mass spectrometer (IRMS); Event label; Group; Harpoon sampler; HASA; Identification; Latitude of event; Location; Lofoten_Vesteralen_1_1992; Lofoten_Vesteralen_10_1992; Lofoten_Vesteralen_12_1992; Lofoten_Vesteralen_15_1992; Lofoten_Vesteralen_2_1992; Lofoten_Vesteralen_5_1992; Lofoten_Vesteralen_7_1992; Lofoten_Vesteralen_8_1992; Lofoten_Vesteralen_9_1992; Lofoten/Vesterålen; Longitude of event; Material; minke whale; Sample mass; Sex; Species; Species, common name; Stable isotopes; Svalbard_1_1992; Svalbard_10_1992; Svalbard_11_1992; Svalbard_4_1992; Svalbard_7_1992; Svalbard_9_1992; Svalbard, Norway; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 4650 data points
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  • 4
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    Ross seal tracking data from expeditions SCALE (MV SA Agulhas II, 2019), PS111 (RV Polarstern, 2018) and S55 (MV SA Agulhas II, 2016) (2021)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Description: Ross seals (Ommatophoca rossii) were instrumented with satellite-linked position-temperature tags. Primary data were collected during spring and summer expeditions carried out by scientists of the Mammal Research Institute (MRI, University of Pretoria), South Africa, the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), Germany, and the UiT - The Arctic University of Norway (UiT). The expeditions were located north of the Lazarev Sea (SA Agulhas II Southern oCean seAsonaL Experiment Spring cruise, 2019) and in the eastern Weddell Sea and King Håkon VII Sea off Queen Maud Land (RV Polarstern PS111 expedition, 2018; SA Agulhas II SANAE 55 expedition, 2016), and combined with published data taken in the aforementioned region during the Norwegian Antarctic Research Expedition (NARE 2000/2001). Processing of the primary data followed an established workflow (2018, 2016) or is described in the source data set (Blix and Nordøy, 2007). The seals were captured along the ships' tracks and instrumented with Argos-linked (CLS, Toulouse, France) position-temperature tags (SPOT300s 2019 (n = 2), 2016 (4); SPLASH10-309A 2018 (2), 2016 (2); SPLASH9 2016 (1); or SDR-T16 (2000 n = 10) Wildlife Computers, Redmond, WA, USA) to investigate their ranging and foraging behaviour in the context of oceanographic features.
    Keywords: Marine Mammal Tracking; MMT; Ross seal (Ommatophoca rossii)
    Type: Dataset
    Format: 20 datasets
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  • 5
    Electronic Resource
    Electronic Resource
    Irregular structures observed below 71 km in the night-time polar D-region (2000)
    Springer
    Annales geophysicae 18 (2000), S. 215-222 
    Details
    ISSN: 0992-7689
    Keywords: Ionosphere (ionospheric irregularities; ionization mechanisms) ; Magnetospheric physics (polar cap phenomena)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A new rocket range, SvalRak, was opened in November 1997 at Ny-Ålesund (79°N) in the Svalbard archipelago. The first instrumented rocket was launched on 20 November, 1997, at 1730 UT during geomagnetically quiet conditions. The payload was instrumented to measure plasma parameters in the mesosphere and lower thermosphere, but the payload only reached an altitude of 71 km. This resulted in a very flat trajectory through the lower D-region. The positive ion concentrations were larger than expected, and some unexpected plasma irregularities were observed below 71 km. The irregularities were typically 100 m in spatial extent, with plasma densities a factor of two to five above the ambient background. In the dark polar night the plasma below 71 km must consist mainly of positive and negative ions and the only conceivable ionising radiation is a flux of energetic particles. Furthermore only relativistic electrons have the large energies and the small gyro radii required in order to explain the observed spatial structure. The source of these electrons is uncertain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-000-0215-7
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  • 6
    Electronic Resource
    Electronic Resource
    DIGESTIBILITY OF CRUSTACEANS and CAPELIN IN HARP SEALS (PHOCA GROENLANDICA) (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Marine mammal science 10 (1994), S. 0 
    Details
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Gross energy intake (GEI), apparent digestible efficiency (%DE), and body-mass change were studied both in recently weaned and in subadult harp seals fed capelin (Mallotus villosus) and crustaceans (Parathemisto libellula and Thysanoessa sp.) ad lib. The median %DE of Parathemisto libellula (with a wet-weight energy density (ED) of 3.9 kJ/g) and Thysanoessa sp. (ED: 2.3 kJ/g) was 81% and 83%, respectively, while the median %DE of capelin (ED: 8.6 kJ/g) was 94% and 93% for subadult harp seals and one harp seal pup, respectively. No correlation between age and %DE was obtained (P 〉 0.05). Despite ad lib. access to the food, the harp seal pups were unable to maintain body mass while on a crustacean diet, and it is therefore suggested that harp seal pups most likely must supplement their crustacean diets with fish to maintain growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1748-7692.1994.tb00486.x
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  • 7
    Electronic Resource
    Electronic Resource
    SEASONAL CHANGES IN FOOD INTAKE OF HARP SEALS (PHOCA GROENLANDICA) AT 69°N (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Marine mammal science 10 (1994), S. 0 
    Details
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Food intake (PI), body mass (BM), and compartmental growth were recorded for 12 mo in four captive 2–4-yr-old male harp seals (Phoca groenlandica), exposed to an artificial light regime that closely resembled natural day length at 69°. In early May before molting, both FZ and BM decreased in all four animals. Total body fat (TBF) declined from 51% of BM in March (n = 4) to 30% in August (n = 2), while total body water (TBW) concomitantly increased from 37% to 51% and total body protein (TBP) from 11% to 17%. In July FI started to increase, while BM started to increase in August. TBF increased while TBW and TBP decreased from August, all three parameters reaching a stable level in October at 47%, 39%, and 12%, respectively. Thereafter, body composition was maintained rather constant until May. Between October and March/April FI fluctuated for all animals, while BM showed a fairly steady increase. Average daily amount of capelin consumed was 2.67 kg·d−1, equivalent to 25,600 kJ·d−1, or 343 kJ·kg−1·d−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1748-7692.1994.tb00487.x
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  • 8
    Electronic Resource
    Electronic Resource
    On testicular cooling in phocid seals (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 1 (1983), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Testicular and body core (intra-thoracic) temperatures were recorded in mature male harp seals (Pagophihis groenlandicus) just prior to the mating season. In phocid seals the testicles are outside the abdomen but protected under 7-8 cm of insulating skin and blubber. The temperature of the testicles was found to be 1–4°C lower than body core temperature. Inspection of the veins of the pelvic and hind-flipper region of a male ribbon seal (Histriophoca faciata) revealed that the testicles of phocid seals are enveloped in venous plexuses communicating with the veins of the hind flippers. It is suggested that cooling of the para-abdominal testicles of phocid seals is attained by passage of cold blood from the hind flippers through the extra-testicular plexuses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1983.tb00738.x
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  • 9
    Electronic Resource
    Electronic Resource
    THE LINKAGE BETWEEN HEXOSAMINE AND AMINO ACIDS IN OVINE SUBMAXILLARY MUCIN (1963)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 106 (1963), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1963.tb16635.x
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  • 10
    Electronic Resource
    Electronic Resource
    Sialic Acids (1955)
    [s.l.] : Nature Publishing Group
    Nature 175 (1955), S. 340-341 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The bovine sialic acid crystallizes in monoclinic rectangular plates, the others in needles or prisms. Although each substance appears microscopically uniform and invariably gives in different preparations the same X-ray diagram, elementary analyses have not given values consistent enough to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/175340a0
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