Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
284, С. 116903 - 116903
Опубликована: Авг. 27, 2024
Ice,
water,
and
sediment
represent
three
interconnected
habitats
in
lake
ecosystems,
bacteria
are
crucial
for
maintaining
ecosystem
equilibrium
elemental
cycling
across
these
habitats.
However,
the
differential
characteristics
driving
mechanisms
of
bacterial
community
structures
ice,
sediments
seasonally
frozen
lakes
remain
unclear.
In
this
study,
high-throughput
sequencing
technology
was
used
to
analyze
compare
structure,
function,
network
characteristics,
assembly
communities
Wuliangsuhai,
a
typical
cold
region
Inner
Mongolia.
The
results
showed
that
ice
water
phases
had
similar
diversity
composition,
with
Proteobacteria,
Bacteroidota,
Actinobacteria,
Campilobacterota,
Cyanobacteria
as
dominant
phyla.
displayed
significant
differences
from
Chloroflexi,
Firmicutes,
Desulfobacterota,
Acidobacteriota
being
Notably,
exhibited
higher
spatial
variability
their
distribution
than
those
sediment.
This
study
also
revealed
during
period,
species
media
were
dominated
by
cooperative
relationships.
Community
primarily
influenced
stochastic
processes,
dispersal
limitation
drift
identified
two
most
factors
within
process.
heterogeneous
selection
played
role
composition.
Furthermore,
functions
related
nitrogen,
phosphorus,
sulfur,
carbon,
hydrogen
vary
among
These
findings
elucidate
intrinsic
structure
changes
quality
different
(ice,
sediment)
cold-zone
freezing
offering
new
insights
environmental
protection
ecological
restoration
efforts
such
environments.
GCB Bioenergy,
Год журнала:
2023,
Номер
15(10), С. 1255 - 1272
Опубликована: Июль 17, 2023
Abstract
Straw
returning
has
been
demonstrated
as
a
beneficial
approach
for
the
utilization
of
renewable
biomass
source,
which
contributes
to
reducing
environmental
pollution
and
strengthening
sustainability
agriculture.
However,
information
on
how
microorganisms
respond
different
straw
return
modes
(SRMs)
at
varying
nitrogen
fertilizer
levels
(NFLs)
in
black
soil
is
still
limited.
The
community
composition,
network
pattern,
modular
function
bacteria
fungi
are
investigated
under
three
SRMs,
including
removal
(CK),
crushed
incorporation
(SD),
biochar
(BC)
NFLs
(0,
144,
240
kg
N
ha
−1
,
respectively)
mainly
using
Illumina
MiSeq
technique
based
long‐term
maize
field
experiment.
Results
showed
that
bacterial
richness,
diversity,
fungal
richness
decreased
with
NFL
reduction.
these
decreases
can
be
compensated
by
SD
BC,
demonstrating
superiority
BC
reduced
NFLs.
differed
their
effects
abundances
(showing
increments
only
SD)
Shannon
diversity
(remaining
stable
irrespective
NFLs).
Microbial
communities
were
substantially
affected
SRMs
interacted
NFLs,
driven
NH
4
+
‐N,
available
potassium,
total
nitrogen,
pH.
In
addition,
induced
characterized
its
highly
complex
(average
degree
10.259
vs.
3.364)
structure
clustering
coefficient
0.503
0.239),
Ascomycota
predominating
keystone
taxa,
abundant
N‐cycling
related
bacteria,
while
formed
comprising
superior
(modularity
2.599
0.912),
dominant
symbiotic
fungi,
bulk
density
specific
shaping
factor,
indicating
function,
determining
factors
shifted
between
co‐occurrence
networks.
These
results
deepen
insights
into
response
divergence
providing
scientific
basis
selecting
suitable
strategy
sustainable
area.
Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
284, С. 116903 - 116903
Опубликована: Авг. 27, 2024
Ice,
water,
and
sediment
represent
three
interconnected
habitats
in
lake
ecosystems,
bacteria
are
crucial
for
maintaining
ecosystem
equilibrium
elemental
cycling
across
these
habitats.
However,
the
differential
characteristics
driving
mechanisms
of
bacterial
community
structures
ice,
sediments
seasonally
frozen
lakes
remain
unclear.
In
this
study,
high-throughput
sequencing
technology
was
used
to
analyze
compare
structure,
function,
network
characteristics,
assembly
communities
Wuliangsuhai,
a
typical
cold
region
Inner
Mongolia.
The
results
showed
that
ice
water
phases
had
similar
diversity
composition,
with
Proteobacteria,
Bacteroidota,
Actinobacteria,
Campilobacterota,
Cyanobacteria
as
dominant
phyla.
displayed
significant
differences
from
Chloroflexi,
Firmicutes,
Desulfobacterota,
Acidobacteriota
being
Notably,
exhibited
higher
spatial
variability
their
distribution
than
those
sediment.
This
study
also
revealed
during
period,
species
media
were
dominated
by
cooperative
relationships.
Community
primarily
influenced
stochastic
processes,
dispersal
limitation
drift
identified
two
most
factors
within
process.
heterogeneous
selection
played
role
composition.
Furthermore,
functions
related
nitrogen,
phosphorus,
sulfur,
carbon,
hydrogen
vary
among
These
findings
elucidate
intrinsic
structure
changes
quality
different
(ice,
sediment)
cold-zone
freezing
offering
new
insights
environmental
protection
ecological
restoration
efforts
such
environments.
