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of O
elements O
including O
vegetation B-climate-nature
, O
land B-climate-properties
cover I-climate-properties
and O
use O
, O
soils B-climate-nature
, O
freshwaters B-climate-nature
, O
birds B-climate-organisms
and O
insect B-climate-organisms
pollinators I-climate-organisms
from O
up O
to O
300 O
1 O
km O
squares O
throughout O
Wales O
. O
The O
field O
survey O
capitalised O
upon O
the O
UKCEH B-climate-observations
Countryside I-climate-observations
Survey I-climate-observations
of O
Great O
Britain O
, O
which O
has O
provided O
an O
extensive O
set O
of O
repeated O
, O
standardised O
ecological O
measurements O
since O
1978 O
. O
The O
design O
of O
both O
GMEP B-climate-organizations
and O
the O
UKCEH B-climate-observations
Countryside I-climate-observations
Survey I-climate-observations
involved O
stratified O
- O
random O
sampling O
of O
squares O
from O
a O
1 O
km O
grid O
, O
ensuring O
proportional O
representation O
from O
land O
classes O
with O
distinct O
climate O
, O
geology O
and O
physical O
geography O
. O
One O
such O
repeat O