Abstract:
Monitoring of Black-browed Albatrosses (Thalassarche melanophris) and Grey-headed Albatrosses (Thalassarche chrysostoma) in various colonies on Bird Island began in 1976. Data are available for the number of nests for each colony per year. More detailed information is available for selected colonies including the number of eggs laid and chicks hatched and fledged from 1989 onwards. An estimation of the total number of pairs on the island each year using a correction factor, and annual breeding success is also available.
Keywords:
Black-browed albatross , Grey-headed albatross , Thalassarche chrysostoma, Thalassarche melanophris, breeding success
| Use Constraints: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ This data should be cited as follows: Population monitoring of Grey-headed and Black-browed Albatross on Bird Island, South Georgia, from 1976 onwards (https://data.bas.ac.uk/metadata.php?id=GB/NERC/BAS/PDC/01200), accessed by contacting UK Polar Data Centre at polardatacentre@bas.ac.uk, [date in here dd/mm/yyyy] We would strongly encourage contacting Richard Philips (raphil@bas.ac.uk) for more information regarding this dataset, including guidance on its reuse. |
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| Creation Date: | 2019-07-26 |
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| Dataset Progress: | In Work |
| Dataset Language: | English |
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| Parameters: |
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| Personnel: | |
| Name | UK Polar Data Centre |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Reference: | Crossin G, Phillips RA, Trathan PN, Fox DS, Dawson A, Wynne-Edwards KE, Williams TD (2012) Migratory carryover effects and endocrinological correlates of reproductive decisions and reproductive success in female albatrosses. General and Comparative Endocrinology 176 Crossin GT, Phillips RA, Lattin CR, Romero LM, Bordeleau X, Harris CM, Love OP, Williams TD (2017) Costs of reproduction and carry-over effects in breeding albatrosses. Antarctic Science 29: 155-164 Forster IP, Phillips RA. (2009) Influence of nest location, density and topography on breeding success in the black-browed albatross Thalassarche melanophris. Marine Ornithology 37: 213-217 Ryan G, Phillips RA, Ne, DC, Wood AJ (2007) Breeding frequency in Grey-headed Albatrosses Thalassarche chrysostoma. Ibis 149: 45-52 Poncet S, Wolfaardt AC, Black A, Browning S, Lawton K, Lee J, Passfield K, Strange G, Phillips RA. Recent trends in numbers of wandering (Diomedea exulans), black-browed (Thalassarche melanophris) and grey-headed (T. chrysostoma) albatrosses breeding at South Georgia. Polar Biology, July 2017, 40 1347-1358. Poncet, S.; Robertson, G.; Phillips, R. A.; Lawton, K.; Phalan, B.; Trathan, P. N.; Croxall, J. P. 2006. Status and distribution of Wandering, Black-browed and Grey-headed Albatrosses breeding at South Georgia. Polar Biology 29: 772-781 |
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| Lineage: | Whole island colony counts The number of nests and chicks in each colony is counted twice annually. The nest count is carried out in November, the chick count in April. The Grey Headed albatross data are the sum of the corrected counts in colonies A, A1, B, C, D, E, K, L, M1, M2 and M3. The count for 1996-1997 is too low as the numbers in colony K were not counted. The Black Browed albatross data are the sums of the corrected counts in colonies H, I, J, N and O. There are no counts for 1991-1992 as only H and J were counted, or for 1994-1995, as the correction factor was unrealistic, so corrected counts could not be calculated. The percentage chick survival is calculated from 2002-2003 onwards when a count of the number of chicks was started in all the above colonies except K. Study colony counts Colonies H, J and N1 (Black Browed Albatross) and colonies B and E (Grey Headed Albatross) are designated study colonies and as such are surveyed more frequently throughout the season. This allows calculations of fledging, hatching and breeding success to be made. All data were collected under permit from the Government of South Georgia and the South Sandwich Islands. All sampling procedures used were regulated by the British Antarctic Survey Ethical Review Committee in collaboration with Cambridge University and the UK Home Office. |
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| Ownership: | ||
| Temporal Coverage: | |
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| Start Date | 1976-01-01 |
| End Date | N/A |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -54.02103 |
| Northernmost | -53.99857 |
| Longitude | |
| Westernmost | -38.08057 |
| Easternmost | -38.01125 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | South Georgia Island |
| Detailed Location | Bird Island |
| Data Storage: | The data are stored in an Oracle database managed by the Scientific Data Manager (Biological Focus), UK PDC |
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