Survey of marine birds and mammals of the South Sandwich Islands
During January and February 1997, two separate surveys of the birds and seals of the South Sandwich Islands archipelago were made, with further data obtained from the northern islands during February 1998. Together, these surveys provide the most recent and accurate estimates of breeding populations...
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Cambridge University Press
1999
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Online Access: | http://nora.nerc.ac.uk/id/eprint/503131/ https://doi.org/10.1017/S0032247400026450 |
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ftnerc:oai:nora.nerc.ac.uk:503131 2023-05-15T13:48:07+02:00 Survey of marine birds and mammals of the South Sandwich Islands Convey, P. Morton, A. Poncet, J. 1999 http://nora.nerc.ac.uk/id/eprint/503131/ https://doi.org/10.1017/S0032247400026450 unknown Cambridge University Press Convey, P. orcid:0000-0001-8497-9903 Morton, A.; Poncet, J. 1999 Survey of marine birds and mammals of the South Sandwich Islands. Polar Record, 35 (193). 107-124. https://doi.org/10.1017/S0032247400026450 <https://doi.org/10.1017/S0032247400026450> Publication - Article PeerReviewed 1999 ftnerc https://doi.org/10.1017/S0032247400026450 2023-02-04T19:37:42Z During January and February 1997, two separate surveys of the birds and seals of the South Sandwich Islands archipelago were made, with further data obtained from the northern islands during February 1998. Together, these surveys provide the most recent and accurate estimates of breeding populations of most species, their distributions, and their habitat. Observations were made (1) from a small vessel operating close inshore, which surveyed approximately 92% of the archipelago's coastline, in addition to making shore counts at selected locations; (2) during a six-week shorebased field camp on Candlemas Island; and (3) opportunistically during helicopter-supported landings and airborne operations over all islands in the archipelago. The surveys recorded 16 species of breeding birds, including the first confirmation of breeding by black-bellied storm petrels (Fregetta tropica) and Antarctic terns (Sterna vittata), the second record of incubating king penguins (Aptenodytes patagonicus), and the location of many previously unrecorded seabird breeding sites. The population of chinstrap penguins (Pygoscelis antarctica), at approximately 1.5 x 10 pairs is considerably less than the estimate of 5 x 10 pairs currently in use, and represents about 30% of the world population. Populations of chinstrap penguins, Antarctic fulmars (Fulmarus glacialoides), cape petrels (Daption capense), and snow petrels (Pagodroma nivea) in the South Sandwich Islands are of global significance. Five species of seals were recorded. At the time of the surveys, only Antarctic fur seals (Arctocephalus gazella) were confirmed to be breeding, and several new breeding sites were located. Pup numbers showed a small increase compared with the few earlier records, but the population has not undergone the large increases seen on South Georgia and at sites in the maritime Antarctic. The other four species recorded are considered highly likely to breed either within the archipelago or amongst pack ice that seasonally surrounds the islands. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seals Antarctica Arctocephalus gazella Candlemas Island Cape Petrels Daption capense King Penguins Polar Record Pygoscelis antarctica Snow Petrels South Sandwich Islands Sterna vittata Natural Environment Research Council: NERC Open Research Archive Antarctic Sandwich Islands South Sandwich Islands South Georgia ENVELOPE(-33.000,-33.000,-56.000,-56.000) Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) Candlemas Island ENVELOPE(-26.673,-26.673,-57.082,-57.082) Polar Record 35 193 107 124 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
During January and February 1997, two separate surveys of the birds and seals of the South Sandwich Islands archipelago were made, with further data obtained from the northern islands during February 1998. Together, these surveys provide the most recent and accurate estimates of breeding populations of most species, their distributions, and their habitat. Observations were made (1) from a small vessel operating close inshore, which surveyed approximately 92% of the archipelago's coastline, in addition to making shore counts at selected locations; (2) during a six-week shorebased field camp on Candlemas Island; and (3) opportunistically during helicopter-supported landings and airborne operations over all islands in the archipelago. The surveys recorded 16 species of breeding birds, including the first confirmation of breeding by black-bellied storm petrels (Fregetta tropica) and Antarctic terns (Sterna vittata), the second record of incubating king penguins (Aptenodytes patagonicus), and the location of many previously unrecorded seabird breeding sites. The population of chinstrap penguins (Pygoscelis antarctica), at approximately 1.5 x 10 pairs is considerably less than the estimate of 5 x 10 pairs currently in use, and represents about 30% of the world population. Populations of chinstrap penguins, Antarctic fulmars (Fulmarus glacialoides), cape petrels (Daption capense), and snow petrels (Pagodroma nivea) in the South Sandwich Islands are of global significance. Five species of seals were recorded. At the time of the surveys, only Antarctic fur seals (Arctocephalus gazella) were confirmed to be breeding, and several new breeding sites were located. Pup numbers showed a small increase compared with the few earlier records, but the population has not undergone the large increases seen on South Georgia and at sites in the maritime Antarctic. The other four species recorded are considered highly likely to breed either within the archipelago or amongst pack ice that seasonally surrounds the islands. |
format |
Article in Journal/Newspaper |
author |
Convey, P. Morton, A. Poncet, J. |
spellingShingle |
Convey, P. Morton, A. Poncet, J. Survey of marine birds and mammals of the South Sandwich Islands |
author_facet |
Convey, P. Morton, A. Poncet, J. |
author_sort |
Convey, P. |
title |
Survey of marine birds and mammals of the South Sandwich Islands |
title_short |
Survey of marine birds and mammals of the South Sandwich Islands |
title_full |
Survey of marine birds and mammals of the South Sandwich Islands |
title_fullStr |
Survey of marine birds and mammals of the South Sandwich Islands |
title_full_unstemmed |
Survey of marine birds and mammals of the South Sandwich Islands |
title_sort |
survey of marine birds and mammals of the south sandwich islands |
publisher |
Cambridge University Press |
publishDate |
1999 |
url |
http://nora.nerc.ac.uk/id/eprint/503131/ https://doi.org/10.1017/S0032247400026450 |
long_lat |
ENVELOPE(-33.000,-33.000,-56.000,-56.000) ENVELOPE(-45.479,-45.479,-60.580,-60.580) ENVELOPE(-26.673,-26.673,-57.082,-57.082) |
geographic |
Antarctic Sandwich Islands South Sandwich Islands South Georgia Nivea Candlemas Island |
geographic_facet |
Antarctic Sandwich Islands South Sandwich Islands South Georgia Nivea Candlemas Island |
genre |
Antarc* Antarctic Antarctic Fur Seals Antarctica Arctocephalus gazella Candlemas Island Cape Petrels Daption capense King Penguins Polar Record Pygoscelis antarctica Snow Petrels South Sandwich Islands Sterna vittata |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Antarctica Arctocephalus gazella Candlemas Island Cape Petrels Daption capense King Penguins Polar Record Pygoscelis antarctica Snow Petrels South Sandwich Islands Sterna vittata |
op_relation |
Convey, P. orcid:0000-0001-8497-9903 Morton, A.; Poncet, J. 1999 Survey of marine birds and mammals of the South Sandwich Islands. Polar Record, 35 (193). 107-124. https://doi.org/10.1017/S0032247400026450 <https://doi.org/10.1017/S0032247400026450> |
op_doi |
https://doi.org/10.1017/S0032247400026450 |
container_title |
Polar Record |
container_volume |
35 |
container_issue |
193 |
container_start_page |
107 |
op_container_end_page |
124 |
_version_ |
1766248679202619392 |