Drought-related root morphological traits and non-structural carbohydrates in the seedlings of the alien Quercus rubra and the native Quercus robur: possible implication for invasiveness
Frontiers in Forests and Global Change,
Год журнала:
2024,
Номер
7
Опубликована: Янв. 31, 2024
Quercus
rubra
L.
is
a
moderately
shade-tolerant
tree
species
native
to
eastern
North
America,
readily
regenerating
since
its
introduction
in
the
Central
and
Southern
European
forests
displace
pedunculate
oak
(
robur
).
Under
scenario
of
increasing
drought,
understanding
seedling
responses
these
two
water
limitation
critical
for
forest
conservation
management.
To
this
aim,
morphological,
physiological
non-structural
carbohydrates
analyzes
were
performed
on
very-fine
fine
roots
Q.
seedlings
grown
under
controlled
conditions
exposed
levels
drought
before
allowing
them
recover.
Results
show
significant
differences
between
all
investigated
traits.
The
alien
showed
lower
shoot
root
biomasses
than
,
particularly
thicker
1–2
mm
diameter
class.
However,
both
equally
invested
more
biomass
system
(R:S
ratio
<1).
A
response
was
observed
0.5–1
class,
with
moderate
severe
droughted
showing
slightly
higher
control,
.
overall
growth
reduction
suggests
that
costs
associated
construction
maintenance
outweigh
inputs
from
aboveground,
as
supported
by
values
photochemical
efficiency
(F
v
/F
m
),
quantum
yield
(ΦPSII)
PSII
stomatal
conductance.
In
particular,
reduced
conductance
assured
high
midday
leaf
potential
(i.e.,
tissue
hydration
levels)
at
expense
growth.
low
starch
concentration
’s
correlated
positively
conditions,
probably
due
photosynthate
aboveground.
contrast
anisohydric
behavior
reported,
outcomes
highlight
rather
isohydric
least
stage
adopted
experimental
making
highly
competitive
drier
condition
canopy
openings
during
summer
period.
Язык: Английский
Verified hypotheses on the “nurse” and “burial” effects on introduced Quercus rubra regeneration in a mesic Scots pine forest
Ecology and Evolution,
Год журнала:
2024,
Номер
14(4)
Опубликована: Апрель 1, 2024
Abstract
A
previous
study
on
the
encroachment
of
North
American
northern
red
oak
Quercus
rubra
L.
into
mesic
Scots
pine
forest
(in
central
Poland)
revealed
high
abundances
seedlings
and
saplings
under
shrubs,
with
lower
in
open
areas
or
clumps
bilberry
Vaccinium
myrtillus
It
was
unclear
whether
regeneration
success
Q.
is
enhanced
by
presence
shrubs
due
to
their
“nurse
effect”,
how
burying
acorns
different
sizes
soil
moss
affects
survival
seeds
(a
“burial
effect”).
Results
a
observational
were
verified
an
experimental
study:
pool
900
large‐,
medium‐,
small‐sized
sown
cover
within
2018
monitored
for
3
years
natural
conditions.
The
majority
lost,
mainly
acorn
pilferage,
lack
germination
death
sprouting
acorns.
However,
seedling
depended
significantly
size
differed
among
microsites
studied.
Viable
twice
as
likely
develop
from
large‐
medium‐sized
acorns,
they
grew
cover,
confirming
positive
effect.”
Seedling
three
times
higher
areas,
than
shrubs;
however,
“nursed”
less
threatened
large
ungulates.
Only
small
part
contributes
reproductive
forest.
Microsites
characteristic
this
type
are
suitable
regeneration;
favors
early
growth,
germination,
while
protect
surviving
herbivory.
Язык: Английский
Sugar maple (Acer saccharum) age structure reveals limited establishment and development of age cohorts in response to selection management in northern hardwood forests
Forest Ecology and Management,
Год журнала:
2023,
Номер
546, С. 121356 - 121356
Опубликована: Авг. 31, 2023
Язык: Английский
Site conditions alter spatial influence of overstory on shade-tolerant Abies alba Mill. seedlings
Forest Ecology and Management,
Год журнала:
2024,
Номер
563, С. 121974 - 121974
Опубликована: Май 18, 2024
Язык: Английский
Decoupling seedling establishment in a shade-intolerant species of a Mediterranean climate: Soil moisture determines survival but growth is promoted by irradiance
Forest Ecology and Management,
Год журнала:
2024,
Номер
569, С. 122190 - 122190
Опубликована: Авг. 1, 2024
Язык: Английский
The role of the water regime in a reclaimed limestone quarry
Journal of Forest Science,
Год журнала:
2024,
Номер
70(8), С. 391 - 406
Опубликована: Авг. 23, 2024
This
study
focused
on
the
hydrophysical
characteristics
of
an
abandoned
limestone
quarry
in
Czechia.
Six
sites
were
examined;
two
undergoing
natural
succession
(the
Quarry
Wall
and
Reed
Canary
Grass
plots,
which
had
undeveloped
arboreal
layers)
four
managed
forest
reclamation.
Of
reclamation
sites,
three
classified
as
prospering
Prospering
Lime,
Maple
Lime
+
Oatgrass
plots)
one
was
decline
Declining
Larch
plot).
The
layer
included
small-leaved
lime
(Tilia
cordata
Mill.),
sycamore
maple
(Acer
pseudoplatanus
L.),
European
larch
(Larix
decidua
Mill.).
Our
results
showed
that
plot
retained
more
water
than
other
plots.
Field
soil
moisture
measurements
indicated
throughout
1096-day
monitoring
period,
only
soils
at
successional
reached
wilting
point
(Quarry
plot:
159
days;
43
days).
Soil
heterogeneity
reclaimed
areas
due
to
variation
profile
depth,
disturbance
from
mining
activities,
efforts,
availability
quality
material.
conditions
dynamics
created
less
ideal
for
tree
regeneration.
primarily
relates
limiting
significantly
heterogeneous
Язык: Английский
Tree species and drought: Two mysterious long‐standing counterparts
Physiologia Plantarum,
Год журнала:
2024,
Номер
176(6)
Опубликована: Окт. 28, 2024
Abstract
Around
252
million
years
ago
(Late
Permian),
Earth
experienced
one
of
its
most
significant
drought
periods,
coinciding
with
a
global
climate
crisis,
resulting
in
devastating
loss
forest
trees
no
hope
recovery.
In
the
current
epoch
(Anthropocene),
worsening
stress
is
expected
to
significantly
affect
communities.
Despite
extensive
efforts,
there
less
research
at
molecular
level
on
than
annual
crop
species.
Would
it
not
be
wise
allocate
equal
efforts
woody
species,
regardless
their
importance
providing
essential
furniture
and
sustaining
terrestrial
ecosystems?
For
instance,
poplar
genome
roughly
quadruple
size
Arabidopsi
s
has
1.6
times
number
genes.
Thus,
massive
effort
genomic
studies
focusing
become
inevitable
understand
adaptation
harsh
conditions.
Nevertheless,
emerging
role
development
high‐throughput
DNA
sequencing
systems,
growing
body
literature
about
responses
under
eco‐physiological
levels.
Therefore,
synthesizing
these
findings
through
contextualizing
history
concepts
understanding
how
species
adapt
water‐limited
Comprehensive
critical
for
preserving
biodiversity
ecosystem
function.
Integrating
insights
analysis
will
enhance
management
change.
Язык: Английский