Forests,
Journal Year:
2024,
Volume and Issue:
15(12), P. 2131 - 2131
Published: Dec. 2, 2024
The
interactive
effects
of
environmental
heterogeneity
caused
by
forest
gaps
and
ectomycorrhizae
on
fungal
community
characteristics
remain
insufficiently
explored.
To
address
this
knowledge
gap,
we
established
a
three-year
field
manipulation
experiment
in
Picea
asperata
(Picea
Mast.)
plantation
located
the
subalpine
region
western
Sichuan,
China.
Growth
bags
with
three
mesh
sizes—1000
μm
(allowing
hyphae),
48
(excluding
ectomycorrhizae),
1
both)—were
placed
across
(closed
canopy,
gap
edge,
center)
to
investigate
how
disturbances
influence
soil
communities
via
changes
ectomycorrhizal
hyphal
turnover
alongside
physicochemical
properties.
Soil
α-diversity
was
significantly
lower
under
closed-canopy
conditions
than
at
centers
remained
unaffected
treatments.
Particularly,
species
diversity
increased
9%,
phylogenetic
10%
compared
closed
canopy.
In
contrast,
β-diversity
responded
both
ectomycorrhizal/hyphal
treatments
(R2
=
0.061;
p
0.001)
positions
0.033;
0.003).
Pairwise
comparative
analyses
revealed
significant
distinctions
between
treatments,
concurrently
excluding
versus
other
experimental
as
well
centers.
dominated
four
major
phyla:
Ascomycota
(25.6%–71.0%),
Basidiomycota
(17.7%–43.7%),
Mortierellomycota
(1.4%–24.5%),
Rozellomycota
(0.4%–2.9%),
relative
abundances
which
were
either
or
positions.
biomass
saprotrophic
fungi
showed
no
response
Notably,
exclusion
hyphae
enhanced
correlations
Hierarchical
partitioning
analysis
that
water
content
(SWC)
dissolved
organic
carbon
key
determinants
beneath
conditions.
edges
centers,
predominantly
shaped
SWC
nitrogen
contents.
This
study
highlights
impacts
communities,
offering
valuable
insights
for
sustainable
management
biodiversity
conservation
ecosystems.
The Innovation Geoscience,
Journal Year:
2024,
Volume and Issue:
2(1), P. 100048 - 100048
Published: Jan. 1, 2024
<p>While
ecological
stoichiometry-based
theories
and
methodologies
have
been
successfully
applied
to
identify
nutrient
limitations
in
plankton
plants
(e.g.,
leaf
resorption
ratios),
determining
soil
microorganisms
by
them
has
great
uncertainties.
Establishing
stoichiometric
thresholds
that
define
specific
for
microbial
communities
a
major
challenge.
Here,
we
present
threshold
framework
predicts
the
of
carbon
(C),
nitrogen
(N),
phosphorus
(P)
leveraging
convergence
elemental
stoichiometry
from
soils
microorganisms.
Combined
with
widely
used
model
(i.e.,
ecoenzyme
vector
model),
theoretical
derived
this
are
validated
empirical
identified
through
analysis
comprehensive
global
dataset
(<i>n</i>
=
3277).
Notably,
find
commonly
assumed
45��
overestimates
P
limitation
underestimates
N
limitation.
By
contrast,
length
0.61
(unitless)
an
angle
55��
more
reliable
identifying
C
N/P
limitations,
respectively.
This
framework,
fundamental
understanding
microbially-driven
plant-soil-microbe
systems,
offers
practical
general
avenue
soils.</p>
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 18, 2024
Abstract
Microbial
carbon
(C)
use
efficiency
(CUE)
delineates
the
proportion
of
organic
C
used
by
microorganisms
for
anabolism
and
ultimately
influences
amount
sequestered
in
soils.
However,
key
factors
controlling
CUE
remain
enigmatic,
leading
to
considerable
uncertainty
understanding
soil
retention
predicting
its
responses
global
change
factors.
Here,
we
investigate
patterns
estimate
stoichiometric
modeling
surface
soils
natural
ecosystems,
examine
associations
with
temperature,
precipitation,
plant‐derived
nutrient
availability.
We
found
that
is
determined
most
limiting
resource
among
these
four
basic
environmental
resources
within
specific
climate
zones
(i.e.,
tropical,
temperate,
arid,
cold
zones).
Higher
common
arid
corresponds
limitations
water,
input,
while
lower
observed
tropical
temperate
widespread
limitation
nutrients
(e.g.,
nitrogen
or
phosphorus)
soil.
The
contrasting
led
an
apparent
increase
increasing
latitude.
resource‐specific
dependence
implies
high
latitudes
environments
may
retain
less
future,
as
warming
increased
precipitation
can
reduce
CUE.
In
contrast,
oligotrophic
low
retention,
could
be
concurrent
anthropogenic
inputs.
findings
underscore
importance
suggest
asymmetric
across
Soil Science & Plant Nutrition,
Journal Year:
2024,
Volume and Issue:
70(4), P. 246 - 269
Published: April 16, 2024
The
extent
to
which
soil
enzyme
activity
in
assessing
nutrient
availability
is
useful
has
been
controversial.
In
this
review,
we
discuss
the
utility
of
ecoenzymatic
stoichiometry
(i.e.
ratio
nutrient-
carbon
(C)-acquiring
activities)
on
basis
resource
allocation
model
for
ecoenzyme
synthesis.
Both
selection
appropriate
enzymes
and
balance
between
relative
amounts
substrates
are
decisive
factors
utilizing
stoichiometry.
Ecoenzymatic
can
evaluate
nitrogen
(N),
phosphorus,
sulfur
many
soils
catalytic
reactions
substrate-limited
but
not
enzyme-limited.
However,
approach
does
seem
be
applicable
where
microbes
limited
by
other
than
availability,
such
as
low
temperature,
Certain
enzymes,
N-acetyl-β-glucosaminidase
protease,
appear
insensitive
N
because
they
release
compounds
containing
both
C
serve
sources
C/energy.
We
propose
use
L-asparaginase
urease
N-acquiring
that
a
compound
NH4+)
hydrolysis
product.
considered
an
indicator
long-term
(weeks)
temporally
integrated
rather
instantaneous
plants
well
microbes,
(i)
persistence
extracellular
soils;
(ii)
significant
correlation
measurements
reflecting
quantity
available
nutrients
soil;
(iii)
plant
uptake.
This
review
also
identifies
challenges
microbial
limitation
using
With
comprehensive
understanding
underlying
mechanisms
limitations,
used
biologically
relevant
combination
with
approaches
conventional
chemical
extraction
methods
addition
approach.
Urban Science,
Journal Year:
2025,
Volume and Issue:
9(3), P. 82 - 82
Published: March 13, 2025
Nature-based
solutions
(NbS)
are
multidimensional,
resource-efficient,
and
sustainable
growth
approaches
to
cope
with
current
challenges,
including
biodiversity
carbon
loss,
pollution,
climate
change
land
degradation.
Amongst
NbS,
urban
forestry
is
an
important
tool
enhance
environmental
resilience
sustainability,
providing
useful
ecosystem
services
for
human
well-being.
In
this
context,
using
suitable
soil
plant
indicators
allows
us
evaluate
the
efficiency
of
in
sustaining
functionality.
Effective
should
be
sensitive
changes
representative
ecological
processes.
Many
studies
focus
on
selection
or
indicators.
The
prior
investigations
considered
soil–plant
interaction
related
complex
heterarchical
bidirectional
effects
involving
strategy
biota.
choice
use
system
could
innovative
better
assess
following:
(1)
ability
support
healthy
plants
their
improve
air
quality;
(2)
effect
processes,
particular
nutrient
cycles.
This
review
investigates
suitability
cycles,
e.g.,
stoichiometry,
enzyme
activity
nitrogen
stable
isotopes,
as
valuable
tools
planning
evaluating
effectiveness
interventions.
