Water status dynamics and drought tolerance of juvenile European beech, Douglas fir and Norway spruce trees as dependent on neighborhood and nitrogen supply
Tree Physiology,
Год журнала:
2024,
Номер
44(5)
Опубликована: Апрель 25, 2024
Abstract
To
increase
the
resilience
of
forests
to
drought
and
other
hazards,
foresters
are
increasingly
planting
mixed
stands.
This
requires
knowledge
about
response
tree
species
in
pure
mixed-culture
neighborhoods.
In
addition,
frequently
interacts
with
continued
atmospheric
nitrogen
(N)
deposition.
disentangle
these
factors
for
European
beech,
Norway
spruce
Douglas
fir,
we
conducted
a
replicated
3-factorial
sapling
growth
experiment
three
moisture
levels,
(high,
medium,
low),
two
N
levels
(high
ambient),
We
measured
biomass,
stomatal
conductance
(GS),
shoot
water
potential
(at
predawn:
ΨPD,
midday,
turgor
loss
point:
ΨTLP),
branch
xylem
embolism
resistance
(Ψ50)
minimum
epidermal
(Gmin).
The
differed
most
respect
Gmin
(10-fold
higher
beech
than
conifers),
hydroscape
area
(larger
beech),
time
elapsed
reach
closure
(TΨGS90)
ΨTLP
(TTLP;
shorter
while
Ψ50
were
remarkably
similar.
Neighborhood
(pure
vs
mixed-culture)
influenced
biomass
production,
status
hydraulic
traits,
notably
GS
(higher
but
lower
mixtures
culture),
safety
margin
(smaller
mixtures),
TΨGS90
TTLP
(shorter
mixture).
High
generally
increased
GS,
no
consistent
effects
on
leaf
traits
detected,
suggesting
that
neighbor
identity
had
larger
effect
plant
relations
availability.
conclude
both
neighborhood
availability
modulate
spruce,
fir.
Species
mixing
can
alleviate
stress
some
species,
often
by
disadvantaging
species.
Thus,
our
study
suggests
stabilizing
building
production
against
drier
warmer
climate
may
depend
primarily
right
choice;
support
agenda.
Язык: Английский
Acclimation of mature spruce and beech to five years of repeated summer drought – The role of stomatal conductance and leaf area adjustment for water use
The Science of The Total Environment,
Год журнала:
2024,
Номер
951, С. 175805 - 175805
Опубликована: Авг. 27, 2024
Forests
globally
are
experiencing
severe
droughts,
leading
to
significant
reductions
in
growth,
crown
dieback
and
even
tree
mortality.
The
ability
of
forest
ecosystems
acclimate
prolonged
repeated
droughts
is
critical
for
their
survival
with
ongoing
climate
change.
In
a
five-year
throughfall
exclusion
experiment,
we
investigated
the
long-term
physiological
morphological
acclimation
mature
Norway
spruce
(Picea
abies
[L.]
KARST.)
European
beech
(Fagus
sylvatica
L.)
summer
drought
at
leaf,
shoot
whole
level.
Throughout
period,
reduced
total
water
use
by
70
%
only
4-9
L
per
day
tree,
while
was
less
affected
about
30
reduction
use.
During
first
two
summers,
achieved
this
closing
stomata
up
80
%.
Additionally,
from
second
onwards,
produced
shorter
shoots
needles,
resulting
stepwise
leaf
area
over
50
end
experiment.
Surprisingly,
no
premature
loss
observed.
This
allowed
gradual
increase
stomatal
conductance.
After
consumption
same
as
controls,
still
reduced.
contrast,
showed
whole-tree
area,
but
nevertheless
closure.
If
restriction
transpiration
closure
sufficient
ensure
during
then
slow
steady
will
successful
use,
stress
survival.
Neighboring
appeared
benefit
water-saving
strategy
using
excess
water.
Язык: Английский
Drought resistance and drought adaptation of Douglas-fir (Pseudotsuga menziesii) – a review
Perspectives in Plant Ecology Evolution and Systematics,
Год журнала:
2024,
Номер
65, С. 125829 - 125829
Опубликована: Окт. 23, 2024
Язык: Английский
Water consumption of beech, spruce and Douglas fir in pure and mixed stands in a wet and a dry year – Testing predictions of the iso/anisohydry concept
The Science of The Total Environment,
Год журнала:
2025,
Номер
970, С. 178948 - 178948
Опубликована: Март 1, 2025
Язык: Английский
Stable isotope inferred intrinsic water use efficiency and its relation to N sources in temperate tree regeneration with increasing levels of N deposition, precipitation, and temperature
Environmental and Experimental Botany,
Год журнала:
2025,
Номер
unknown, С. 106125 - 106125
Опубликована: Март 1, 2025
Язык: Английский
The effect of climate at origin on Douglas-fir growth, leaf traits and embolism resistance along a rainfall gradient in Central Europe
Trees,
Год журнала:
2025,
Номер
39(2)
Опубликована: Март 28, 2025
Язык: Английский
Shifts in resource allocation and aggravation of foliage development restrict the growth rate of Picea abies under increasing atmospheric humidity at high latitudes
The Science of The Total Environment,
Год журнала:
2025,
Номер
979, С. 179452 - 179452
Опубликована: Апрель 27, 2025
Язык: Английский
Ecological assessment of forest management approaches to develop resilient forests in the face of global change in Central Europe
Basic and Applied Ecology,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 1, 2025
Язык: Английский
The increasing role of drought as an inciting factor of bark beetle outbreaks can cause large-scale transformation of Central European forests
Landscape Ecology,
Год журнала:
2025,
Номер
40(6)
Опубликована: Май 23, 2025
Abstract
Context
Historically,
large-scale
outbreaks
of
the
European
spruce
bark
beetle
were
initiated
mainly
by
windthrows.
However,
after
2018,
a
severe
drought
triggered
hitherto
largest
outbreak
observed
in
Europe,
signalling
major
shift
disturbance
regime.
Objectives
Develop
and
test
an
approach
that
allows
simulating
this
novel
dynamics
evaluate
landscape-scale
compound
impacts
wind-
drought-initiated
throughout
twenty-first
century.
Methods
We
incorporated
into
forest
landscape
simulation
model
iLand,
using
critical
values
vapour
pressure
deficit
as
trigger.
Forest
management
records
remote
sensing-based
maps
used
to
derive
parameters
simulated
Central
(41,000
hectares).
The
period
1961–2021
was
for
evaluation,
years
until
2100
scenario
analysis.
Results
I
ncorporating
trigger
led
notable
decoupling
wind
disturbances,
which
have
historically
formed
typical
cascade
forests.
While
growing
stock
species
composition
resilient
wind-dominated
regime,
resilience
diminished
under
compounded
impact
drought-triggered
disturbances.
new
regime
caused
persistent
decline
Norway
resulted
overall
decrease
landscape-level
stock.
Conclusions
Our
findings
underscore
urgent
need
approaches
increasingly
complex
suggest
future
beetles
on
landscapes
may
be
greater
than
previously
anticipated.
Язык: Английский
Linking sap flow and tree water deficit in an unmanaged, mixed beech forest during the summer drought 2022
Plant Biology,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 25, 2024
Temperate
mixed
forests
are
currently
experiencing
severe
drought
conditions
and
face
increased
risk
of
degradation.
However,
it
remains
unclear
how
critical
tree
physiological
functions
such
as
sap
flow
density
(SFD)
water
deficit
(TWD,
defined
reversible
stem
shrinkage
when
is
depleted),
respond
to
extreme
environmental
they
interact
under
dry
conditions.
We
monitored
SFD
TWD
three
co-occurring
European
species
(Fagus
sylvatica,
Fraxinus
excelsior
Acer
pseudoplatanus)
in
conditions,
using
high
temporal
resolution
flow,
dendrometer,
measurements.
Species-specific
responses
soil
drying
did
not
differ
significantly,
while
was
significantly
higher
F.
excelsior.
Inter-specific
differences
wood
anatomy
use
strategies
consistently
explain
these
responses.
responded
both
moisture
content
(SWC)
during
wet
(SWC
≥
0.2)
<
phases,
with
responding
more
strongly.
There
a
significant
correlation
for
vapour
pressure
(VPD)
only
the
phase,
VPD
phase.
During
incoming
PPFD
correlated
all
species,
sylvatica
negatively
SFD,
showing
hysteresis
effects
from
which
decreasing
sigmoidal
phase
along
gradient
observed.
The
nonlinear
correlations
between
may
result
time
lag
two
variables,
their
different
sensitivities
SWC
intensities.
conclude
that,
stress,
cannot
be
used
proxy
or
vice
versa.
Язык: Английский