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  • 1
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    California content of squid (Mollusca: Cephalopoda) (1982)
    British Antarctic Survey
    In:  British Antarctic Survey Butlletin, 55 . pp. 27-31.
    Details
    Publication Date: 2020-06-15
    Description: Published information appears to be lacking on the chemical composition and calorific content of Southern Ocean squid, which are important prey of sperm whales and many seabirds. Data for 17 species of squid (all but one from the Northern Hemisphere) are reviewed. lt is concluded that they have calorific contents distinctly lower than those of Antarctic fish and krill, mainly because of lower Iipid content. Because of the importance of such information to studies of energy transfer between trophic Ievels, it is recommended that data on the chemical composition and calorific content of Antarctic squid should be rapidly obtained.
    Type: Article , PeerReviewed
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  • 2
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    Fish prey of the Antarctic fur seal Arctocephalus gazella at South Georgia (1983)
    British Antarctic Survey
    In:  British Antarctic Survey Butlletin, 61 . pp. 27-37.
    Details
    Publication Date: 2020-06-15
    Description: A small collection of otoliths was obtained from scatsof sub-adult male Antarctic fur seals Arctocephalus gazella at Bird Island, South Georgia. A reference collection of otoliths from South Georgia fish was used to identify the material and to derive relationships between otolith length and fish weight which were then applied to the sample otolith, after correcting for loss of material during digestion. The pelagic icefish Chamsocephalus gunnari was the main prey, in terms of numbers (55%) and weight (76%) of fish consumed. Other species taken include thelantern fish Gymnoscoscopelus nicholsi, the nototheniids Notothenia rossii. Notothenia gibberifrons, and Patagonotothen larseni and Pseudochaenichthys georgianus. The estimated mean weight of the C. gunnari specimens was 160kg (range 45-560g) and most were young adults aged 3-5 years; individuals of other species were mainly much smaller.
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  • 3
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    Birds of South Georgia: New records and re-evaluation of status (1983)
    British Antarctic Survey
    In:  British Antarctic Survey Butlletin, 59 . pp. 15-27.
    Details
    Publication Date: 2020-06-15
    Description: A check list od South Georgia birds in presented, giving details of all new records from 31 January 1977 to 30 April 1982 an summarizingrevised information on the status of many of the breeding species. In this period, 22 visiting or vagrant species have been recorded, seven for the first time at South Georgia, including the first species of Palaecrctic origin, little stint an European house martin, and substantial numbers of cattle egrets. One new breeding species, fairy prion, was discovered. The total avifauna now consists of 30 breeding species an 36 visitors and vagrants.
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  • 4
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    The distribution and abundance of burrowing seabirds (Procellariiformes) at Bird Island, South Georgia: Introduction and methods (1982)
    British Antarctic Survey
    In:  BAS Bulletins , 56 . pp. 49-67.
    Details
    Publication Date: 2020-06-12
    Description: The habitals utilized by burrowing petrels at Bird lsland, South Gcorgia are described and the habitat modifications induced by the activities of fur seals and other seabirds summarised. The field methods for an investigation of the distribution and abundance of the nine species of burrow-dwelling petrels that breed on Bird lsland are described in detail. About 40% of the 200 hectares of ground suitable for burrow excavation was investigated using a system of grid squares each 3600 m² in area. ln each square, two randomly located circular quadrats of area 36 m² were studied. For each quadrat, aspect, slope, vegetation types and their cover, extent of fur seal influence and status of every burrow were recorded. Seven categories of both empty and occupied burrows were recognized and examination techniques (including use of tape-recorded calls to facilitate species identification) are described in detail. Over 5000 burrows were examined, with dove prion the most abundant species.
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  • 5
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    Cephalopod remains in regurgitations of the wandering albatross diomedea exulans L. at south georgia (1981)
    British Antarctic Survey
    In:  British Antarctic Survey Butlletin, 54 . pp. 9-21.
    Details
    Publication Date: 2020-06-15
    Description: Regurgitations of the chicks of wandering albatrosses near their nests included 762 upper beaks (mandibles) and 532 lower beaks of cephalopods. Twenty-five species of cephalopod are present in the diet. Analysis of the complete samples shows the three most important species in the diet to be Kondakovia longimana (40.0% by number), Taonius pavo (16.9%) and Histioteuthis(?) eltaninae (8.7%). While the large Taningia danae only comprises 1.3% by number, it may contribute over 5% by weight. The species and size ranges of beaks are compared with those occurring in the stomachs of sperm whales killed by whalers in the Southern Hemisphere (Clarke, 1980). The ten complete samples contain an average of 44 beaks which probably represents about 200 days' accumulation. Both Antarctic and warm-water cephalopods are present in the diet. These albatrosses possibly scavenge some of thei food from vomit of sperm whales.
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