Cite this dataset as
Keogan, K., Lewis, S., Howells, R.J., Newell, M.A., Harris, M.P., Burthe, S., Phillips, R.A., Wanless, S., Phillimore, A.B., Daunt, F. (2020). Diet, timing of egg laying and breeding success data for Isle of May European shag population 1985-2015. NERC Environmental Information Data Centre. (Dataset). https://doi.org/10.5285/6231bd5b-ee2d-4cca-a9ef-88006ffa4976
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This dataset is available under the terms of the Open Government Licence 
Diet, timing of egg laying and breeding success data for Isle of May European shag population 1985-2015
Data on timing of breeding, breeding success and diet of the European shag, sampled from the Isle of May population. The data were collected between 1985 and 2015 by visually checking nests and collecting regurgitated diet samples. These data are part of the Isle of May long-term study to assess population trends of seabirds under environmental change (IMLOTS https://www.ceh.ac.uk/our-science/projects/isle-may-long-term-study).
Publication date: 2020-10-14
View record as
Format
Comma-separated values (CSV)
Spatial information
- Study area
-
- Spatial representation type
- Tabular (text)
- Spatial reference system
- WGS 84
Temporal information
- Temporal extent
-
1985-01-01 to 2015-12-31
Provenance & quality
Breeding phenology and success were recorded for a sample of nests every year between 1987 and 2016 (no data available for 1993 and 2003). Nests were monitored in 18 plots spread throughout the colony. Nests were checked every seven days from before laying started until after the last chick had fledged.
Sea surface temperature data were extracted for February and March in each year (from http://www.bsh.de) for an area surrounding the Isle of May that overlapped shag foraging distribution in the breeding season.
Regurgitates (from which the biomass proportions of each prey type can be estimated) were collected during the chick-rearing period (April -July) between 1985 and 2014. Collection dates showed a strong positive correlation with the timing of the shag breeding season.
Sea surface temperature data were extracted for February and March in each year (from http://www.bsh.de) for an area surrounding the Isle of May that overlapped shag foraging distribution in the breeding season.
Regurgitates (from which the biomass proportions of each prey type can be estimated) were collected during the chick-rearing period (April -July) between 1985 and 2014. Collection dates showed a strong positive correlation with the timing of the shag breeding season.
Related
This dataset is included in the following collections
Correspondence/contact details
Dr. Francis Daunt
UK Centre for Ecology & Hydrology
Lancaster Environment Centre, Library Avenue, Bailrigg
Lancaster
Lancashire
LA1 4AP
UNITED KINGDOM
enquiries@ceh.ac.uk
Lancaster
Lancashire
LA1 4AP
UNITED KINGDOM
Authors
Keogan, K.
Marine Scotland Science, University of Edinburgh
Lewis, S.
University of Edinburgh
Howells, R.J.
Marine Scotland Science
https://orcid.org/0000-0002-4723-175X
Phillips, R.A.
British Antarctic Survey
Phillimore, A.B.
University of Edinburgh
Other contacts
- Custodian
-
NERC EDS Environmental Information Data Centreinfo@eidc.ac.uk
- Publisher
-
NERC Environmental Information Data Centreinfo@eidc.ac.uk