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increased O
by O
140 O
mm O
. O
However O
, O
no O
significant O
trend O
of O
annual B-climate-properties
runoff I-climate-properties
during O
the O
last O
20 O
years O
could O
be O
found O
. O
Air B-climate-properties
temperature I-climate-properties
and O
precipitation B-climate-properties
changes I-climate-properties
were O
significant O
during O
winter O
and O
spring O
but O
very O
small O
in O
summer O
. O
Coniferous B-climate-nature
and O
mixed B-climate-nature
coniferous I-climate-nature
- I-climate-nature
broadleaf I-climate-nature
forests I-climate-nature
cover O
at O
present O
about O
72 O
% O
of O
the O
catchment B-climate-nature
area I-climate-nature
. O
Transpiration O
of O
the O
boreal B-climate-nature
forest I-climate-nature
ecosystem O
measured O
using O
a O
sap O
flow O
method O
during O
the O
dry O
summer O
1999 O
was O
limited O
by O
very O
dry O
soil B-climate-nature
water I-climate-nature
conditions O
, O
especially O
for O
spruce B-climate-organisms
trees I-climate-organisms
, O
and O
during O
the O
rainy O
summer O
2000 O
probably O
by O