Plants,
Journal Year:
2022,
Volume and Issue:
11(6), P. 730 - 730
Published: March 9, 2022
European
beech
(Fagus
sylvatica
L.)
forests
provide
multiple
essential
ecosystem
goods
and
services.
The
projected
climatic
conditions
for
the
current
century
will
significantly
affect
vitality
of
beech.
expected
impact
climate
change
on
forest
ecosystems
be
potentially
stronger
in
southeast
Europe
than
rest
continent.
Therefore,
our
aim
was
to
use
long-term
monitoring
data
crown
indicators
Croatia
identify
trends,
investigate
influence
previous
year
available
site
factors
using
defoliation
(DEF)
(ΔDEF)
as
response
variables.
results
reveal
an
increasing
trend
DEF
during
study
period
from
1996
2017.
In
contrast,
no
significant
annual
ΔDEF
observed.
applied
linear
mixed
effects
models
indicate
a
very
strong
drought
ΔDEF,
while
have
weak
or
insignificant
effect
DEF.
suggest
that
explain
25
30%
variance,
similar
values
conditional
marginal
R2
show
uniform
ΔDEF.
These
represents
accumulated
location-specific
stressful
environmental
tree
vitality,
reflects
intense
stress
recent
status
could
more
appropriate
analysing
trees.
Progress in Physical Geography Earth and Environment,
Journal Year:
2024,
Volume and Issue:
48(3), P. 454 - 489
Published: Feb. 16, 2024
Recent
developments
in
tree-ring
research
offer
great
potential
for
reconstructing
past
climate
changes;
determining
the
frequencies
of
natural
hazards;
and
assessing
availability
freshwater
resources
over
timescales
that
extend
well
into
pre-instrumental
period.
Here,
we
review
state
dendrochronological
Himalaya
outline
future
directions
tree-ring-based
hydrological
reconstructions
a
region
has
pressing
societal
need
to
understand
causes
consequences
past,
present
changes
cycle.
We
used
‘tree
ring’
‘Himalaya’
as
keywords
identify
scholarly
articles
from
Web
Science
were
published
between
1994
2022.
The
resulting
173
publications
separated
by
their
spatial
coverage
western,
central
eastern
Himalaya,
scientific
purpose
(e.g.
growth-climate
relationships,
temperature,
precipitation,
streamflow,
floods,
droughts,
etc.).
Our
analysis
shows
primarily
focused
on
understanding
relationships
using
annual
widths
measurements
obtained
coniferous
species,
application
reconstructions.
Reconstructions
processes
such
streamflows,
extremes
glacial
landslide
lake
outburst
have
received
less
attention.
advances
dendrochronology,
including
blue
intensity
(BI),
quantitative
wood
anatomy
(QWA),
stable
isotopes
(TRSI)
should
be
combined
improve
resolution
accuracy
all
parts
Himalaya.
Such
studies
may
allow
us
better
effects
change
Himalayan
water
its
lowland
surroundings.
They
also
facilitate
decision-making
mitigating
impacts
hazards,
managing
region.
Forests,
Journal Year:
2024,
Volume and Issue:
15(8), P. 1357 - 1357
Published: Aug. 3, 2024
Land
degradation,
desertification
and
tree
mortality
related
to
global
climate
change
have
been
in
the
spotlight
of
remote
sensing
research
recent
decades
since
extreme
climatic
events
could
affect
composition,
structure,
biogeography
forests.
However,
complexity
processes
requires
a
holistic
approach.
Herein,
we
present
first
assessment
historical
perspective
forest
by
reviewing
both
meteorological
ground-based
studies.
We
compiled
254
papers
on
that
make
use
remotely
sensed
products,
monitoring,
drivers,
focusing
their
spatial
temporal
patterns
methods
applied
while
highlighting
gaps.
Our
core
results
indicate
international
publications
are
increase,
with
main
hotspots
being
North
America
(39%)
Europe
(26%).
Wetness
indicators
appear
as
barometer
explaining
at
local
scale,
vegetation
derived
from
multispectral
optical
sensors
promising
for
large-scale
assessments.
observed
almost
all
studies
reviewed
were
based
less
than
25
years
data
scale.
Longer
timeframes
regional
scale
investigations
will
include
multiple
species
analysis
significant
impact
future
research.
Ecological Processes,
Journal Year:
2024,
Volume and Issue:
13(1)
Published: Feb. 9, 2024
Abstract
Background
Treeline
ecotones
of
Mediterranean
ecoregions
have
been
affected
by
the
increasing
intensity
and
severity
droughts.
Even
though
effect
droughts
on
forest
dynamics
has
widely
documented,
knowledge
is
relatively
scarce
how
extreme
climate
episodes
affect
hydraulic
structure
and,
therefore,
physiology
woody
plants.
The
Andes
experienced
an
uninterrupted
period
drought
since
2010,
including
extremely
dry
year
in
2019
with
approximately
80%
rainfall
deficit.
Here,
we
investigated
shifts
wood
anatomical
physiological
traits
Kageneckia
angustifolia
,
endemic
treeline
species,
response
to
this
period.
Methods
We
evaluated
xylem
plasticity
three
K.
populations
across
their
natural
distribution
(31–35°
SL)
based
(vessel
distribution)
(intrinsic
water-use
efficiency)
variables
tree
rings.
focused
2000–2020
that
corresponds
before
megadrought
(2000–2007),
(ii)
(2008–2018)
(iii)
hyperdrought
(2019–2020).
were
annualized
analyzed
linear
mixed-effects
models.
Results
Our
results
provide
insights
mechanisms
underlying
resilience
forests
persistent
central
Chile.
found
2019–2020
triggered
vessel
size
frequency
increased
safety.
These
significant
occurred
parallel
a
decrease
pit
aperture
area
increase
efficiency,
further
stress.
Conclusions
revealed
coordinated
efficiency
megadrought,
thereby
reducing
vulnerability
failure.
apparent
suggests
adaptation
stress
may
its
ability
tolerate
novel
climatic
conditions
environments
Andes,
although
it
not
clear
whether
these
adaptations
will
be
sufficient
persist
scenarios
predict
intensification
Finally,
our
empirical
evidence
integrating
facilitates
understanding
develop
face
Frontiers in Earth Science,
Journal Year:
2024,
Volume and Issue:
12
Published: Dec. 16, 2024
Introduction
The
Global
Meteoric
Water
Line
(GMWL)
describes
the
linear
relationship
between
stable
hydrogen
(
δ
2
H)
and
oxygen
18
O)
isotopes
in
precipitation
over
large
spatial
scales
therefore
represents
a
unique
reference
for
water
isotopic
values.
Although
trees
have
potential
to
capture
composition
of
precipitation,
it
remains
unclear
if
GMWL
can
be
reconstructed
from
tree-ring
isotopes,
since
O
H
undergo
vivo
physiological
fractionation.
Methods
We
analyze
tree
rings
values
six
regions
along
latitudinal
gradient
Spain
Greenland.
Results
data
show
that
covariance
closely
follows
GMWL,
which
reflects
signature
large-scale
patterns.
changes
regional
wide
ranges
are
influenced
by
with
temperature
latitude
being
most
significant
drivers
variation
across
studied
regions.
In
contrast,
local
mainly
controlled
plant
fractionation
processes
mask
precipitation.
Conclusion
conclude
at
larger
scales,
but
not
when
evaluating
them
individual
sites.
