Forests,
Год журнала:
2023,
Номер
14(5), С. 894 - 894
Опубликована: Апрель 26, 2023
In
this
study,
we
made
use
of
a
regional
oak
tree-ring
network
from
six
stands
that
cover
the
northern
Moldavian
Plateau
(eastern
Europe)
to
analyze
how
different
tree
ring
parameters
(i.e.,
early
wood
width,
late
and
total
width)
Quercus
sp.
are
influenced
by
occurrence
extreme
climatic
events
(e.g.,
long-lasting
drought
events).
order
explore
influence
hydroclimatic
on
have
selected
each
most
positive
negative
years
growth
addressed
seasonal
cycle
in
comparison
with
main
parameters,
then
evaluated
both
current
lagged
consequences
width
capacity
trees
recover.
Our
results
indicate
variability
is
mainly
availability
water
resources,
an
important
limiting
factor
for
events,
e.g.,
at
least
two
row
severe
conditions.
Forest Ecology and Management,
Год журнала:
2024,
Номер
554, С. 121599 - 121599
Опубликована: Янв. 22, 2024
Tree
growth
depends
on
tree-intrinsic
attributes,
synecological
interactions,
atmospheric
conditions
and
soil
properties.
While
the
influence
of
tree
factors
climate
are
analysed
in
detail
many
studies,
effect
properties
is
less
investigated
compensatory
effects
often
not
quantified.
In
this
study,
we
use
a
comprehensive
dataset
1659
increment
cores
from
six
common
Central
European
species
(Abies
alba,
Fagus
sylvatica,
Larix
decidua,
Picea
abies,
Pinus
sylvestris,
Quercus
spp.)
sampled
at
1562
locations
across
large
environmental
gradients
Eastern
Alps.
Soil
data
was
available
an
extensive
survey
including
pits,
laboratory
analysis
application
pedotransfer-functions.
Up
to
three
main
per
site
were
ring
widths
dendrochronologically
measured
synchronized.
Topographic
information
high-resolution
Digital
Terrain
Model,
biometric
measures
each
site.
To
determine
water
storage
capacity
nutrient
status,
used
generalized
additive
models
expand
standard
well-known
drivers
growth,
age,
climatic
balance
temperature.
For
time
span
38
years
1981
until
2018,
found
species-specific
impacts
growth.
Specifically,
acted
as
buffer
overcome
drought
periods,
particular
for
deep
rooting
like
spp.
Abies
alba.
addition,
reactions
status
nutrient-demanding
likes
sylvatica
but
no
demanding
sylvestris.
Our
results
show
magnitude
relation
other
radial
species.
Therefore,
posit
that,
while
age
do
have
stronger
it
important
consider
factor,
particularly
distribution
margins
along
gradients.
Ecological Modelling,
Год журнала:
2024,
Номер
492, С. 110696 - 110696
Опубликована: Апрель 6, 2024
Forests
play
a
crucial
role
in
climate
regulation
and
societal
well-being.
Despite
their
significance,
the
increasing
frequency
of
droughts
poses
severe
threat
to
forest
ecosystems,
impacting
carbon
sequestration
stability.
In
Germany,
unprecedented
2018–2020
drought
resulted
extensive
tree
mortality
damaged
wood
volume,
with
lasting
effects
observed
subsequent
years.
As
models
project
continuation
such
droughts,
understanding
impact
on
forests
becomes
imperative.
However,
it
is
unclear
how
will
evolve
future
if
duration
continues
increase.
This
study
employs
model
analyze
across
various
German
types,
focusing
periods
influence
productivity.
By
utilizing
an
individual-based
growth
national
inventories,
addresses
critical
knowledge
gaps
regarding
multi-year
biomass
productivity
including
monocultures
mixed
forests.
The
simulations
consider
drought-induced
large
increase
caused
by
factors
as
pest
infestations
diseases
Germany.
Our
simulation
results
reveal
declining
aboveground
gross
primary
production
(GPP)
for
all
simulated
scenarios,
three-
six-year
drought.
GPP
reduced
46
%
3-year
scenario
58
6-year
scenario.
Notably,
prolonged
lead
cumulative
losses,
saturation
effect
scenarios
exceeding
eight
Forest
stand
composition
influences
these
impacts,
greater
losses
low-biomass
stands.
Furthermore,
different
types
exhibit
varying
responses.
Monocultures
even-sized
(mostly
planted
managed
forests)
are
more
sensitive
than
uneven-sized
provide
valuable
insights
into
resilience
ecosystem
responses
increasingly
frequent
highlighting
importance
inform
management
strategies.
Modelling
biotic
dynamics
process-based
manner
remains
challenge
that
requires
research.
Journal of Ecology,
Год журнала:
2022,
Номер
110(11), С. 2673 - 2683
Опубликована: Авг. 8, 2022
Abstract
Climate
change
is
increasing
the
severity
and
frequency
of
droughts
around
globe,
leading
to
tree
mortality
that
reduces
production
provision
other
ecosystem
services.
Recent
studies
show
growth
mixed
stands
may
be
more
resilient
drought
than
pure
stands.
The
two
most
economically
important
widely
distributed
species
in
Europe
are
Norway
spruce
(
Picea
abies
(L.)
Karst)
Scots
pine
Pinus
sylvestris
L.),
but
little
known
about
their
susceptibility
when
coexist.
This
paper
analyses
resilience
(resistance,
recovery
rate
time)
at
individual‐tree
level
using
a
network
tree‐ring
collections
from
22
sites
along
climatic
gradient
central
Scandinavia.
We
aimed
identify
differences
following
between
stands,
how
environmental
variables
(climate,
topography
site
location)
characteristics
influence
them.
found
both
timing
duration
drive
different
responses
compositions.
showed
higher
vulnerability
summer
drought,
with
lower
resistance
longer
time
pine.
Mixtures
provided
for
compared
benefit
decreases
drought.
Especially
climate
sensitive
old
trees
climatically
marginal
were
affected
by
stress.
Synthesis
.
Promoting
forests
promising
strategy
adapting
European
change.
However,
if
future
become
longer,
advantage
could
disappear
which
would
especially
negative
spruce.
Biogeosciences,
Год журнала:
2023,
Номер
20(6), С. 1155 - 1180
Опубликована: Март 30, 2023
Abstract.
Forest
dieback
in
Europe
has
recently
intensified
and
become
more
extensive.
This
is
strongly
influenced
by
meteorological
variations
of
temperature,
T2m,
precipitation,
P,
can
be
monitored
with
forest
greenness.
study
quantitatively
investigates
the
3-year
history
preceding
events
reduced
greenness
Europe's
temperate
Mediterranean
biome
a
systematic
approach.
A
specific
focus
lies
timing
unusually
persistent
strong
anomalies
T2m
as
well
their
relation
to
synoptic
weather
systems.
pragmatic
approach
based
on
remote
sensing
observations
normalized
difference
vegetation
index
(NDVI)
serves
identify
low-forest-NDVI
at
50
km
scale
June
August
2002–2022.
We
quantify
impact
hottest
summer
record
2022,
which,
according
our
criteria,
negatively
affected
37
%
regions,
thereby
extensively
than
any
other
The
low-NDVI
occurred
particularly
dry
hot
summers,
but
histories
also
featured
significant
further
past,
clear
differences
between
biome.
key
feature
anomalous
accumulation
periods
(i.e.,
P
deficit)
over
26
34
months
biome,
respectively.
In
only,
was
anomalously
during
almost
same
26-month
period
distinctive
peaks
late
past
three
growing
seasons.
While
hot–dry
conditions
were
characteristic
already
previous
summer,
we
find
hardly
precursor
prior
event
year.
identified
went
along
cyclone
activity
positive
anticyclone
frequency
occurrence
these
two
systems
locally
nuanced,
showing,
e.g.,
consistently
increased
decreased
western
northern
Europe,
respectively,
all
summers.
Finally,
are
useful
test
whether
observed
impacts,
structural
overshoot,
systematically
investigated
events.
summary,
investigations
multi-annual
provided
evidence
how
surface
synoptic-scale
up
3
years
European
observation
record-extensive
2022
underlines
that
understanding
forest–meteorology
interaction
particular
relevance
for
changing
climate.
Global Change Biology,
Год журнала:
2023,
Номер
29(13), С. 3652 - 3666
Опубликована: Апрель 7, 2023
The
resilience
of
forests
to
drought
events
has
become
a
major
natural
resource
sustainability
concern,
especially
in
response
climate
change.
Yet,
little
is
known
about
the
legacy
effects
repeated
droughts,
and
tree
species
ability
respond
across
environmental
gradients.
In
this
study,
we
used
tree-ring
database
(121
sites)
evaluate
overall
last
century.
We
investigated
how
geography
affected
at
level.
evaluated
temporal
trends
using
predictive
mixed
linear
modeling
approach.
found
that
pointer
years
(e.g.,
growth
reduction)
occurred
during
11.3%
20th
century,
with
an
average
decrease
66%
compared
previous
period.
occurrence
was
associated
negative
values
Standardized
Precipitation
Index
(SPI,
81.6%)
Palmer
Drought
Severity
(PDSI,
77.3%).
Tree
differed
their
capacity,
however,
inhabiting
xeric
conditions
were
less
resistant
but
higher
recovery
rates
Abies
concolor,
Pinus
lambertiana,
jeffreyi).
On
average,
needed
2.7
recover
from
events,
extreme
cases
requiring
more
than
decade
reach
pre-drought
rates.
main
abiotic
factor
related
precipitation,
confirming
some
are
better
adapted
resist
droughts.
variation
for
all
indices
(scaled
100),
decreasing
resistance
(-0.56
by
decade)
(-0.22
decade),
(+1.72
relative
rate
(+0.33
decade).
Our
results
emphasize
importance
time
series
forest
resilience,
particularly
distinguishing
species-level
context
which
likely
frequent
intense
under
changing
climate.
The Science of The Total Environment,
Год журнала:
2024,
Номер
941, С. 173665 - 173665
Опубликована: Май 31, 2024
Recent
hot
droughts
have
caused
tree
vitality
decline
and
increased
mortality
in
many
forest
regions
on
earth.
Most
of
Central
Europe's
important
timber
species
suffered
from
the
extreme
2018/2019
drought,
confronting
foresters
with
difficult
questions
about
choice
more
drought-
heat-resistant
species.
We
compared
growth
dynamics
European
beech,
sessile
oak,
Scots
pine
Douglas
fir
a
warmer
cooler
lowland
region
Germany
to
explore
adaptive
potential
four
climate
warming
(24
stands).
The
basal
area
increment
(BAI)
two
conifers
has
declined
since
1990-2010
both
regions,
that
beech
region,
while
oak
showed
positive
BAI
trends.
A
2
°C
difference
mean
temperatures
higher
frequency
days
(temperature
maximum
>30
°C)
resulted
greater
sensitivity
negative
climatic
water
balance
elevated
summer
heat
pine.
This
suggests
include
climate-growth
analyses.
Negative
pointer
years
were
closely
related
dry
years.
Nevertheless,
all
recovery
within
one
three
conclude
are
sensitive
deteriorating
temperatures,
so
far
not
been
able
successfully
acclimate
climate,
especially
but
also
pine,
being
vulnerable
drying
climate.
Plants,
Год журнала:
2025,
Номер
14(1), С. 109 - 109
Опубликована: Янв. 2, 2025
Pedunculate
oak
(Quercus
robur
L.)
is
widely
distributed
across
Europe
and
serves
critical
ecological,
economic,
recreational
functions.
Investigating
its
responses
to
stressors
such
as
drought,
extreme
temperatures,
pests,
pathogens
provides
valuable
insights
into
capacity
adapt
climate
change.
Genetic
dendrochronological
studies
offer
complementary
perspectives
on
this
adaptability.
Tree-ring
analysis
(dendrochronology)
reveals
how
Q.
has
historically
responded
environmental
stressors,
linking
growth
patterns
specific
conditions
drought
or
temperature
extremes.
By
examining
tree-ring
width,
density,
dynamics,
researchers
can
identify
periods
of
suppression
enhancement
predict
forest
future
climatic
events.
further
complement
by
uncovering
adaptive
genetic
diversity
inheritance
patterns.
Identifying
markers
associated
with
stress
tolerance
enables
managers
prioritize
the
conservation
populations
higher
potential.
These
guide
reforestation
efforts
support
development
climate-resilient
populations.
integrating
data,
gain
a
holistic
understanding
robur’s
mechanisms
resilience.
This
knowledge
vital
for
management
sustainable
planning
in
face
challenges,
ultimately
helping
ensure
long-term
viability
their
ecosystems.
The
topics
covered
review
are
very
broad.
We
tried
include
most
relevant,
important,
significant
studies,
but
focused
mainly
relatively
recent
Eastern
European
because
they
species’
area.
However,
although
more
than
270
published
works
have
been
cited
review,
we
have,
course,
missed
some
studies.
apologize
advance
authors
those
relevant
that
not
cited.
Tree
responses
to
drought
are
well
studied,
but
the
interacting
effects
of
timing
on
growth,
water
use,
and
stress
legacy
less
understood.
We
investigated
how
a
widespread
conifer,
Scots
pine,
responded
hot
droughts
early
or
late
in
growing
season,
both.
measured
sap
flux,
stem
needle
elongation,
leaf
potential
(Ψleaf)
assess
impacts
resilience
pine
saplings.
The
summer
had
peak
temperatures
36.5
°C,
while
peaked
at
38.2
°C.
Soil
content
during
both
periods
declined
ca.
50%
control
values.
early-season
caused
growth
cessation
already
Ψleaf
-
1.1
MPa,
visible
as
an
almost
30
days
earlier
end
resulting
needles
2.7
cm
shorter,
average.
This
reduction
area
decreased
productivity,
seasonal
transpiration.
However,
reduced
use
early-stressed
saplings
appeared
enhance
resistance
late-season
drought,
reflected
smaller
decline
lower
tree
deficit
compared
that
did
not
experience
stress.
In
summary,
we
observed
persistant
from
hot-drought
stress,
evident
35%
area,
which
impacted
resistance,
productivity.
These
structural
adjustments
development
bud
mass
could
be
critical
evergreen
conifers,
whose
long-lived
foliage
influences
future
potential.