The BSBI Distribution Database

The BSBI Distribution Database is a wondrous thing. It has become so good that I am now struggling to think of questions to ask it.

For example, things that take hardly any time:

Taxa per tetrad 2000- present

Taxa per tetrad 2000- present in VC104

Altitude Range for Alchemilla alpina & A, glabra in VC104

Altitude Range for Alchemilla alpina & A. glabra in VC104

A view of how recording for Atlas 2020 is going by hectad (10km square):

Hectad notfound

since2000

refound

since2000

new

since2000

Total % total taxarecorded

since 2000

NG13 43 134 15 192 78%
NG14 125 294 49 468 73%
NG15 79 290 72 441 82%
NG20 167 309 25 501 67%
NG23 82 186 27 295 72%
NG24 178 358 67 603 70%
etc.

A history of hectad records for taxa, here exemplified by some sedges:

Taxon pre-1930 1930-1969 1970-1986 1987-1999 2000-2009 2010- total freq
Carex lasiocarpa 6 8 8 9 7 3 19
Carex lepidocarpa 4 21 17 35 11 8 40
Carex leporina 6 38 18 35 39 29 44
Carex limosa 10 18 13 15 14 11 28
Carex nigra 5 38 27 45 48 39 51
Carex norvegica 1 1 0 0 0 0 1
Carex oederi 14 11 8 8 12 6 33
Carex otrubae 8 17 2 14 21 13 30
Carex pallescens 8 31 16 29 28 20 41
Carex panicea 5 40 19 47 48 40 49
Carex paniculata 1 4 5 5 4 4 14
Carex pauciflora 9 18 12 11 9 4 30

I may never want to go out in the field again…..

Distribution maps of taxa, and read-only access to the ‘message board’ are available to anyone; you do not have to have a login password. The database is here.

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