Agriculture Ecosystems & Environment,
Journal Year:
2023,
Volume and Issue:
356, P. 108632 - 108632
Published: June 16, 2023
Woody
plant
encroachment
threatens
grassland
biomes
at
a
global
scale.
Pyric
herbivory
combines
prescribed
burnings
and
targeted
grazing
to
restore
open
habitats
has
proved
be
successful
in
promoting
landscape
community
diversity.
However,
less
is
known
on
the
effects
of
pyric
practices
belowground
biodiversity.
We
evaluated
midterm
effect
mesofauna,
bacteria
fungi
burns
horse
regimes
implemented
encroached
by
gorse
(Ulex
gallii
Planch.).
hypothesized
that
1)
low-intensity
shrub-to
shrub
had
no
or
transient
low
magnitude
soil
microbial
diversity,
2)
after
burning
increased
mesofauna
diversity
midterm.
established
an
experiment
two
shrub-encroached
grasslands
western
Pyrenees
with
three
treatments
(no
as
control,
but
grazing,
grazing).
measured
properties
(DNA-metabarcoding)
just
fire,
vegetation
structure,
fungi,
periods
(a
year
half
burning).
The
response
differed
among
organisms.
Fungi
were
more
sensitive
than
bacteria,
both
recovered
–fungi
only
presence
grazing–.
Grazing
indexes
(∼20
%
∼5
increase,
respectively)
sites.
A
burning,
burned
ungrazed
areas
30
control
whereas
decreased
one
sites
compared
control.
Since
responses
vary
organisms,
wide
range
management
intensities
across
space
time
are
recommended
for
maximizing
Frontiers in Environmental Science,
Journal Year:
2023,
Volume and Issue:
11
Published: Feb. 21, 2023
Little
is
known
about
the
effects
of
grassland
degradation
on
carbohydrate-active
enzyme
(CAZYme)
genes
responsible
for
C
cycling.
Here
we
used
a
metagenomic
approach
to
reveal
variation
in
abundance
and
composition
CAZyme
experiencing
range
severity
(i.e.,
non-,
light,
moderately,
severely
degraded)
two
soil
layers
(0–10
cm,
10–20
cm)
steppe
northern
China.
We
observed
higher
degraded
compared
with
other
three
severities.
Glycoside
hydrolase
(GH)
glycosyltransferase
(GT)
were
identified
as
most
abundant
gene
families.
The
Mantel
test
partitioning
suggested
an
interactive
effect
depth
respect
composition.
Structural
equation
modeling
indicated
that
total
carbon,
microbial
biomass
carbon
organic
characteristics
important
abundance,
which
suggests
interaction
between
fractions
determining
Both
above-
below-ground
factors
linked
matter
play
central
role
Frontiers in Plant Science,
Journal Year:
2023,
Volume and Issue:
14
Published: Jan. 24, 2023
Ginseng
is
a
profitable
crop
worldwide;
however,
the
ginseng
replanting
problem
(GRP)
major
threat
to
its
production.
Soil
amendment
non-chemical
method
that
gaining
popularity
for
alleviating
continuous
cropping
obstacles,
such
as
GRP.
However,
impact
of
soil
with
either
cow
dung
or
canola
on
GRP
reduction
and
associated
microbiota
remains
unclear.
In
present
study,
we
evaluated
effect
dung,
seed
powder,
without
(control),
survival
seedling
transplants,
bacterial
fungal
communities,
their
metabolic
functions.
The
results
showed
increased
rate
by
100
percent
had
remarkable
positive
plant
growth
compared
control,
whereas
did
not.
Cow
improved
nutritional
status
in
terms
pH,
electrical
conductivity,
NO3-
,
total
carbon,
phosphorus,
available
phosphorus.
amplicon
sequencing
using
Illumina
MiSeq
strongest
negative
reducing
diversity.
On
other
hand,
stimulated
beneficial
microbes,
including
Bacillus,
Rhodanobacter,
Streptomyces,
Chaetomium,
while
suppressing
Acidobacteriota.
Community-level
physiological
profiling
analysis
Biolog
Ecoplates
containing
31
different
carbon
sources
activity
higher
utilization
rates
carbohydrates
polymer
sources,
mainly
Tween
40
beta-methyl-d-glucoside.
These
were
most
highly
Bacillota.
Furthermore,
predicted
ecological
function
analyses
communities
fermentation
fewer
functions
related
pathogens
parasites,
signifying
potential
enhance
suppressiveness.
Co-occurrence
network
based
random
matrix
theory
(RMT)
revealed
transformed
microbial
into
connected
complex
network.
This
study
first
report
alleviation
amendment,
contributes
significantly
our
understanding
how
alterations
via
can
aid
alleviation.
Land Degradation and Development,
Journal Year:
2022,
Volume and Issue:
33(15), P. 2699 - 2712
Published: April 14, 2022
Abstract
Grassland
degradation
has
become
a
serious
environmental
problem
worldwide.
However,
the
link
between
grassland
and
soil
functional
microorganisms
remains
unclear.
Here,
we
investigated
effects
of
subalpine
meadow
on
taxonomic
communities
microbiome
Mount
Wutai
eastern
margin
Loess
Plateau,
China,
using
shotgun
metagenomic
sequencing.
The
results
showed
that
vegetation
decreased
most
nutrients
(e.g.,
organic
carbon
[SOC,
−48.9%],
total
nitrogen
[TN,
−15.2%]
[TC,
−38.3%]),
leading
to
significant
changes
in
(
r
=
0.892,
p
<
0.001)
compositions
0.972,
microbial
(explaining
66.6%
64.5%
variance,
respectively).
structural
equation
model
(SEM)
variations
nutrient
status
plant
parameters
caused
by
resulted
community
structure
function.
during
altered
(C)
(N)
cycling
separately
or
interactively.
Among
C
degradation‐related
genes,
relative
abundances
cellulose
degradation,
sugar
utilization
chitin
genes
moderately
degraded
(MD)
heavily
(HD)
meadows
were
significantly
higher
than
those
nondegraded
(ND)
0.05).
abundance
denitrification
nirK
,
nirS
norB
norC
)
nitrification
pmoA
/
amoA
pmoB
amoB
pmoC
amoC
hao
was
all
meadows,
which
increased
risk
N
loss.
Our
findings
revealed
negative
feedback
microbes
due
metabolically
active
tended
accelerate
Agriculture Ecosystems & Environment,
Journal Year:
2023,
Volume and Issue:
356, P. 108632 - 108632
Published: June 16, 2023
Woody
plant
encroachment
threatens
grassland
biomes
at
a
global
scale.
Pyric
herbivory
combines
prescribed
burnings
and
targeted
grazing
to
restore
open
habitats
has
proved
be
successful
in
promoting
landscape
community
diversity.
However,
less
is
known
on
the
effects
of
pyric
practices
belowground
biodiversity.
We
evaluated
midterm
effect
mesofauna,
bacteria
fungi
burns
horse
regimes
implemented
encroached
by
gorse
(Ulex
gallii
Planch.).
hypothesized
that
1)
low-intensity
shrub-to
shrub
had
no
or
transient
low
magnitude
soil
microbial
diversity,
2)
after
burning
increased
mesofauna
diversity
midterm.
established
an
experiment
two
shrub-encroached
grasslands
western
Pyrenees
with
three
treatments
(no
as
control,
but
grazing,
grazing).
measured
properties
(DNA-metabarcoding)
just
fire,
vegetation
structure,
fungi,
periods
(a
year
half
burning).
The
response
differed
among
organisms.
Fungi
were
more
sensitive
than
bacteria,
both
recovered
–fungi
only
presence
grazing–.
Grazing
indexes
(∼20
%
∼5
increase,
respectively)
sites.
A
burning,
burned
ungrazed
areas
30
control
whereas
decreased
one
sites
compared
control.
Since
responses
vary
organisms,
wide
range
management
intensities
across
space
time
are
recommended
for
maximizing
