Redshank nesting on saltmarshes in Britain

Quality Control

These data have been gathered by trained field-workers and the data are of a high quality

These data have been mapped and checked for sensitivities and typographical/geographical errors

Method steps

1. In this survey a total of 63 saltmarsh sites in Britain were surveyed for breeding redshsank. Survey sites were selected to include a range of saltmarsh habitats and also to reflect the regional distribution of saltmarshes around the coast of Britain. Numbers of redshank breeding at each site was measured using standard methods developed by Green et al. (1984) and Green (1986). The mean number of redshank counted on survey visits up to 31 May was used as an estimate of the peak number of pairs with nests. The abundance of other species such as wildfowl and other waders were also captured as part of this survey, these data do not occur as part of this dataset.
   
   RSPB scientific staff and volunteers collected and analysed these data.

Sixty-three saltmarsh sites were surveyed, representing around 5% of the total area of saltmarsh in Britain. Sites were selected to include a range of saltmarsh habitats evenly distributed around Britain. No formal random sampling protocol was used to select sites. The entire dataset is presented at 100m resolution.

Data points for this dataset represent the central point of the site surveyed.