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Matthew Oates, National Trust

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Nick Baker, Presenter and Naturalist

From issue:   Issue:   British Wildlife 24.5 June 2013

The grid-mapping of species at sites

By - Des Callaghan

The large-scale distributioin of species is commonly documented by a grid-mapping approach, whereby a grid is placed over a study area and the presence or absence of each species within each grid cell is determined. The Ordnance Survey grid is used as a common standard in Britain, and the resolution used is commonly 2 x 2km (tetrads) for countries and 10 x 10km (hectads) for countries. 

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"British Wildlife is the pulsating heart of the UK nature conservation movement."

Matthew Oates, National Trust

"The most important and informative publication on wildlife of our times"

Michael McCarthy, The Independent

"Packed with readable, thoughtful, up to date articles; written by ecologists and naturalists for ecologists and naturalists"

Nick Baker, Presenter and Naturalist