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Allocation, coverage, richness and species maps for Shetland |
This page gives results and maps in the Atlas region of Shetland.
The table below summarises the number of 10-km squares in the region and how they have been allocated to observers in each season. |
| Level of allocation |
Number of 10-km squares |
| Winter season |
Breeding season |
| Less than minimum tetrad allocation*1 |
18 |
0 |
| Minimum tetrad allocation achieved |
24 |
42 |
| Additional 10-kms with low-priority tetrads*2: none allocated |
7 |
7 |
| Additional 10-kms with low-priority tetrads: some allocated |
4 |
4 |
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*1 Minimum allocation means 8 or more priority tetrads,
or all of them if fewer than 8 available
*2 Low-priority = tetrads whose centre is not onland |
So far, Timed Tetrad Visits have been made in 214 tetrads in winter ( 196 receiving both early and late visits).
Likewise in the breeding season, 310 tetrads have been surveyed of which 203 have had both early and late visits.
The tables below indicate how TTV coverage is progressing towards out national aim to survey 8 tetrads in every 10-km square. Note that in regions undertaking
a local atlas the aim will be to survey more than 8 tetrads, so in these counties there may still be tetrads to survey. For a full list of counties running
a local atlas, click here. |
| Priority |
No. of
tetrads |
No. needed for
minimum coverage
(min-8-rule) |
Total no. TTVs
(2 visits) |
Total no. TTVs
(only 1 visit) |
No. using
min-8-rule
(1+ visits) |
% of target
(1+ visits) |
| High (tetrads on land) |
376 |
244 |
176 |
15 |
162 |
66% |
| Low (coastal tetrads) |
296 |
. |
20 |
3 |
. |
|
| Priority |
No. of
tetrads |
No. needed for
minimum coverage
(min-8-rule) |
Total no. TTVs
(2 visits) |
Total no. TTVs
(only 1 visit) |
No. using
min-8-rule
(1+ visits) |
% of target
(1+ visits) |
| High (tetrads on land) |
376 |
244 |
183 |
100 |
230 |
94% |
| Low (coastal tetrads) |
296 |
. |
20 |
7 |
. |
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Below you can view maps of tetrads allocated for coverage, various maps of actual coverage, results such as the percentage of
potentially present species recorded so far and example species maps. To view maps, click on the relevant button.
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