Late Quaternary fluctuation in upper range limit of trees shapes endemic flora diversity on the Tibetan Plateau
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 20, 2025
The
influence
of
paleoclimate
in
shaping
current
biodiversity
pattern
is
widely
acknowledged.
However,
it
remains
unclear
how
the
upper
paleo-range
limit
trees,
which
dictated
habitat
endemic
alpine
species,
affects
variability
species
composition
across
space
over
Tibetan
Plateau.
We
integrated
satellite-derived
range
dendrochronological
data,
and
fossil
pollen
records
with
a
dataset
climate-driven
predictive
model
to
reconstruct
spatio-temporal
trees
at
100-year
intervals
since
Last
Glacial
Maximum.
Our
results
show
that
distributed
lowest
elevations
during
Maximum
(~3426
m),
ascended
highest
Holocene
Climatic
Optimum
(~4187
level
~180
m
higher
than
present-day
(~4009
m).
temporal
fluctuations
limits
play
more
important
role
spatial
beta-diversity
flora,
regions
witnessing
having
lower
beta-diversity.
therefore
suggest
anthropogenic-caused
climate
change
on
decadal-to-centennial
timescales
could
lead
orbitally-forced
centennial-to-millennium
timescales,
consequently
cause
homogenization
composition,
threatening
pool.
Language: Английский
Climatic Influence on Growth Performance of Abies spectabilis in the Himalayas
Forests,
Journal Year:
2025,
Volume and Issue:
16(3), P. 473 - 473
Published: March 8, 2025
Climate
change
has
affected
forest
ecosystems
across
the
world
over
past
century.
However,
its
impact
is
particularly
high
in
Himalayas
due
to
increasing
temperatures,
extreme
precipitation
events,
and
regional
droughts.
In
this
context,
a
review
of
current
stage
research
was
deemed
necessary
understand
adaptation
key
conifer
species
climate
variability
Central
Himalayas.
Hence,
we
conducted
systematic
published
peer-reviewed
journal
articles
addressing
growth
performance
Abies
spectabilis
(D.
Don)
Spach
From
review,
three
main
patterns
response
have
emerged:
positive
correlation
radial
tree
with
temperature
previous
growing
seasons,
limitation
by
winter
temperature,
or
moisture
pre-monsoon
season.
Overall,
results
indicate
an
elevation-dependent
sensitivity,
crucial
role
availability,
seasonal
shifts
climate–growth
relationships,
reflecting
species’
adaptability
changing
conditions.
Our
revealed
that
studies
on
wood
anatomical
traits
A.
are
still
rare.
The
tree-ring
shows
complex
variability,
as
well
decreasing
trends
distribution
range.
Language: Английский
Intensifying neighbouring tree competition suppresses tree growth at the eastern Tibetan tree line
Functional Ecology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
Abstract
Although
neighbourhood
interactions
are
important
for
the
establishment
and
survival
of
tree
line
trees,
it
remains
poorly
understood
how
they
affect
growth
rates
under
changing
climatic
conditions.
Here,
we
combine
census
data
dendrochronological
measurements
from
18
plots
between
4300
4520
m
asl
on
eastern
Tibetan
Plateau
to
develop
a
retrospective
Neighbourhood
Index.
We
then
investigate
whether
interaction
is
facilitative
or
competitive
changes
over
time.
Our
results
show
that
competition
water
not
only
dominates
Plateau,
but
also
increased
significantly
1960
2009
(
p
<
0.001).
Contrary
common
belief
at
high
elevation,
demonstrate
among
mature
trees
in
ecotones
likely
increase
projected
global
warming.
Read
free
Plain
Language
Summary
this
article
Journal
blog.
Language: Английский