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  3. Wader Zonal Map

Wader Zonal Map

Summary

The Wader Zonal Map – a.k.a. Wader Sensitivity Map (WSM) and Breeding Wader Sensitivity Map – was produced by the British Trust for Ornithology (BTO) in partnership with the Forestry Commission and the Cairngorm National Park Authority. This layer shows the predicted relative abundance of ten species of breeding wader for each 1km square of England, Scotland and Wales. Predicted relative abundances are categorised into five strata identified by numbers under the two-letter code in the attribute table. The two-letter codes are: [cu] – Curlew [l] – Lapwing [rk] – Redshank [sn] – Snipe [oc] – Oystercatcher [gp] – Golden Plover [dn] – Dunlin [cs] – Common Sandpiper [rp] – Ringed Plover [gk] – Greenshank. Predictions were derived using statistical models (random forest regression tree) with bird data taken from the BTO/SOC/BWI Bird Atlas (which covered the period 2008 – 11) and a range of environmental data sets, including climate (temperature and precipitation), topography (elevation and slope), habitat, wind farms and roads and predation risk. While overall the predictive models performed well as assessed by correlation with empirical data, it must be emphasised that these are predictions which will not be accurate in all cases. Full details of the models, sources of data and fuller discussion of the predictive capabilities and limitations of the models are found in the associated report, O’Connell et al. 2021. This report (https://www.bto.org/our-science/publications/research-reports/sensitivity-mapping-breeding-waders-britain-towards) should be referred to when using this data. Additional attribute fields: [ONEKMREF] = the OS monad reference. [Cntry] = the GB country into which the 1km grid square falls – where a grid square is cross-border this is coded as such. Coding: 1 – England, 2- Scotland, 3 – Wales, 4 – England and Scotland, 5 – England and Wales.

Categories

Use limitation statement

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Licence

Contains Forestry Commission information licensed under the Open Government Licence v3.0.

Attribution statement

Contains OS data © Crown copyright [and database right] [year].

Technical information

Update frequency

unknown

Lineage

Wader Sensitivity Map (WSM) to be named in the Forestry Commission External Map Browser as “Wader Zonal Map” – produced by the British Trust for Ornithology (BTO) in partnership with the Forestry Commission and the Cairngorm National Park Authority. This layer shows the predicted relative abundance of ten species of breeding wader for each 1-km square of England, Scotland and Wales. Raw data 2008-11, Calibrated 2008-11 and 2016-19, ground truthed and processed 2021.

Spatial information

Geographic extent

  • Latitude from: 49.51848 to 61.031992
  • Longitude from: -8.545898 to 2.879883
Metadata information

Language

English

Metadata identifier

ae6714c3-1e9d-42bd-a8d3-1c9d545d6de5


Published by

Forestry Commission


Dataset reference dates

Creation date

03 November 2021

Revision date

03 November 2021

Publication date

N/A

Period

  • From: 03 November 2021
  • To: 03 November 2021

Search

Data and Supporting Information
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