BGS Hosted Metadata
Population size and breeding success of gentoo penguins on Signy Island from 1978 to 2020.
This dataset pertains to gentoo penguin breeding success at selected colonies on Signy island from 1978 to 2020. It comprises annual ground counts of occupied and incubating nests, eggs (proxy for breeding pairs), chicks hatched, and chicks expected to fledge. The GPS locations for surveyed sites are also included. From the 1996-1997 season onwards, this dataset conforms to CCAMLR data collection standards and contributes to the CCAMLR Ecosystem Monitoring Program (CEMP).
Ecosystems component of BAS Polar Science for Planet Earth Programme, funded by NERC.
Simple
- Date (Creation)
- 2021-08-04
- Date (Revision)
- 2021-08-04
- Date (Publication)
- 2021-08-04
- Date (released)
- 2021-08-04
- Edition
-
1.0
- Unique resource identifier
- https://doi.org/10.5285/883c6b40-024e-41e8-9c3e-2668a44b5751
- Codespace
-
doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01540
- Codespace
- Other citation details
-
Please cite this item as: Dunn, M., Adlard, S., Lynnes, A., Briggs, D., Fox, D., & Morley, T. (2021). Population size and breeding success of gentoo penguins on Signy Island from 1978 to 2020. (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/883c6b40-024e-41e8-9c3e-2668a44b5751
- Credit
-
No credit.
- Status
- Completed
- Point of contact
-
Organisation name Individual name Electronic mail address Role British Antarctic Survey Dunn, Michael Author British Antarctic Survey Adlard, Stacey
Author International Association of Antarctic Tour Operators
Lynnes, Amanda Author British Antarctic Survey Briggs, Dirk
Author Royal Society for the Protection of Birds Fox, Derren
Author University of Aberdeen Morley, Tim
Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
-
-
Breeding success
-
Gentoo penguin
-
Population size
-
Signy Island
-
- Place
-
-
Signy Island South Orkney Islands
-
-
GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
-
This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/
- Use constraints
- Other restrictions
- Other constraints
-
This data is governed by the NERC data policy and supplied under Open Government Licence v.3
- Use constraints
- Other restrictions
- Other constraints
-
There are no access constraints.
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Larger work citation
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Larger work citation
- Unique resource identifier
- url
- Codespace
-
url
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
-
- Biota
)
- Begin date
- 1978-11-26
- End date
- 2021-01-16
- Supplemental Information
-
It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.
- Title
-
European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
- Date (Publication)
- 2008-11-12
- Cited responsible party
-
Organisation name Individual name Electronic mail address Role European Petroleum Survey Group
Publisher
- Unique resource identifier
- urn:ogc:def:crs:EPSG::3031
- Version
-
6.18.3
Distributor
- Distributor contact
-
Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Distributor format
-
Name Version text/csv
- Units of distribution
-
bytes
- Transfer size
- 5888
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=883c6b40-024e-41e8-9c3e-2668a44b5751 Get Data
- Hierarchy level
- Dataset
- Statement
-
Methodology:
Gentoo penguin colonies, predetermined as distinct groups of breeding pairs, were selected and surveyed using ground counts starting in the 1978-1979 season. In total, ten Gentoo colonies were surveyed annually, and in this dataset those colonies are combined for total counts per season. Optimal count dates were determined by observed phenology each season.
Monitoring comprised of counts of occupied nests and incubating nests for gentoo penguins. Nests were categorised as "incubating" (at least one egg present) and "occupied" (no eggs observed) either through manual nest marking, or observations from the colony edge using a tally counter. This was carried out one week after peak egg-laying (CEMP Standard Method A3A). Subsequently, fledgling counts were completed when all chicks had entered creche (CEMP Standard Method A6C). Counts were always individually repeated three times on the same day, until within 10 percent of each other. From the 2006/2007 season onwards, hand-held GPS devices were also used to provide specific coordinates of each surveyed colony.
An annual index of breeding population size was then calculated by determining the means of the number of occupied nests and incubating nests for several aggregated colonies. Breeding success was calculated by taking the annual number of creched chicks prior to fledging, divided by the total number of breeding pairs
Data quality:
Standard CCAMLR (CEMP) monitoring methods were implemented in 1996. Prior to this date, counting methods and timing of counts may have varied, which should be considered when comparing counts and calculating inter-annual trends from previous seasons.
For some seasons, only information on specific parameters was possible to obtain (when the base would open late/shut early). In some years, certain data pertaining to chick counts was not possible to obtain. For NA values in the column titled 'Total number of nests without eggs", which is carried out mid-season, some, if not all failed nests are abandoned by the time of the survey. Their stones are then stolen by other nesting birds, and the nests are no longer visible to field assistants. Abnormalities or the lack of data collected for other reasons is explained in the comments alongside that season's data.
More details on the counts can be provided upon request to the Polar Data Centre.
For this publication on annual gentoo penguin population monitoring, individual colony counts across the island were combined into totals per season. For additional details as to colony counts within Signy Island, please contact the Polar Data Centre.
Metadata
- File identifier
- 883c6b40-024e-41e8-9c3e-2668a44b5751 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2021-08-04
- Metadata standard name
-
ISO 19115 Geographic Information - Metadata
- Metadata standard version
-
ISO 19115:2003(E)
- Metadata author
-
Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Point of contact
))
