Wednesday, August 27, 2008

Winter Atlas Coverage


This has been sat in my inbox for a while and has got lost in the crowd. This is the result of coverage in Lancs and Merseyside for the first winter of the Atlas. It represents all the results we have in hand - either from local returns or via the BTO. It is not everything as we believe that some records from the north of the region are still outstanding.
In summary - at least one TTV was done in 341 tetrads (37% of the whole) of which 315 have two visits and 26 only one. The squares equal two TTVs the circles only one.
In addition we probably have enough Roving Recorder returns to produce species lists for another 20 tetrads but this wont, of course, contribute to relative abundance calculations.

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