Authorea (Authorea),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 29, 2024
Drought
can
profoundly
alter
freshwater
ecosystems.
Although
the
impacts
of
drought
on
fish
have
received
increasing
attention,
our
understanding
response
gut
microbes
to
event
remains
limited.
We
combined
approaches
focusing
community
assembly
processes
and
microbial
core
network
investigate
dynamic
interactions
between
external
environment
during
recovery
periods,
assessed
resistibility
at
different
periods.
found
that
would
decrease
diversity
affect
composition
function
communities
in
gut.
The
exchange
compensated
for
decline
drought.
In
addition,
effects
propagated
through
trophic
cascades.
compensation
mechanism
reflects
adaptability
environments.
Our
study
highlights
environment,
provides
a
new
perspective
extreme
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
291, P. 117819 - 117819
Published: Feb. 1, 2025
Aggregation
and
co-occurrence
patterns
of
microbial
communities
are
the
key
scientific
issues
in
lake
ecology.
To
explore
mechanisms
ecological
assembly
community
succession
this
unique
habitat,
16
samples
were
collected
from
eight
sites
Wuliangsuhai
Lake.
Second-generation
DNA
sequencing
was
applied
to
reveal
spatial
dynamics
bacterial
structure
distribution
across
two
environmental
media
nutrient-rich
shallow
grassland
elucidate
characteristics
network.
This
study
also
examined
effects
filtering
biological
interactions
on
formation
maintenance
composition
diversity.
The
results
highlight
habitat
heterogeneity
composition,
with
no
discernible
latitudinal
diversity
patterns.
causal
analysis
identified
electrical
conductivity,
pH,
total
nitrogen,
phosphorus
as
primary
factors
driving
changes
water
sediment
grass-type
lakes,
TN
being
driver.
CL500-3
a
pollution-tolerant
species
aquatic
environments.
g__norank_f_Verrucomicrobiaceae
exhibited
significant
distance
decay
pattern,
higher
turnover
rate
than
sediment.
Co-occurrence
network
revealed
greater
complexity
stability
communities,
three
potential
keystone
species,
water.
neutral
null
model
indicated
that
more
susceptible
dispersal
limitation,
whereas
complex
increased
role
deterministic
processes
construction.
proposed
division
plant
regions
freshwater
lakes
demonstrated
different
types,
contributing
comprehensive
understanding
shallow-water
structure.
Microorganisms,
Journal Year:
2025,
Volume and Issue:
13(5), P. 1050 - 1050
Published: April 30, 2025
Benthic
microbial
communities
are
a
vital
component
of
coastal
subtidal
zones,
playing
an
essential
role
in
nutrient
cycling
and
energy
flow,
fundamental
to
maintaining
the
stability
functioning
marine
ecosystems.
However,
response
benthic
prokaryotic
eukaryotic
environmental
changes
remains
poorly
understood.
Herein,
we
conducted
nearly
semimonthly
annual
sampling
survey
investigate
temporal
patterns
underlying
mechanisms
sediments
Sanshan
Island,
situated
eastern
Laizhou
Bay
Bohai
Sea,
China.
The
results
showed
that
variations
followed
distinct
seasonal
pattern,
with
turnover
more
dominant
community
succession.
Nonetheless,
contrasting
were
observed
alpha
diversity
communities,
as
well
taxa
across
different
communities.
Water
temperature,
dissolved
oxygen,
electrical
conductivity,
salinity,
total
nitrogen
(TN),
NH4+,
PO43−
identified
predominant
drivers.
assembly
was
driven
by
ecological
processes,
which
stochastic
processes
mainly
shaped
while
deterministic
dominated
Interactions
within
primarily
characterized
mutualistic
or
cooperative
relationships,
but
ability
maintain
under
disturbances
notable
differences.
These
shed
light
on
dynamics
potential
driving
disturbances,
highlighting
roles
zones
providing
valuable
insights
for
management
conservation
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Feb. 26, 2025
Bacteria
and
micro-eukaryotes
play
important
roles
in
river
ecological
systems.
The
processes
that
govern
bacterial
micro-eukaryotic
communities
urban
rivers
are
still
uncertain.
spatiotemporal
characteristics
assembly
of
the
Xiangjianghe
River
were
explored
using
16
S
18
rRNA
gene
amplicon
sequencing
present
study.
results
indicate
community
composition
exhibited
distinct
temporal
spatial
variation.
topological
co-occurrence
networks
demonstrate
coexistence
patterns
vary
significantly
between
four
seasons.
Water
temperature
(WT)
oxidation-reduction
potential
(ORP)
detected
as
most
critical
factors
affecting
structure.
stochastic
process
(dispersal
limitation)
was
dominant
for
bacteria
all
Deterministic
influenced
differently.
Compared
to
bacteria,
values
niche
breadth
relatively
lower,
proportion
deterministic
higher
micro-eukaryotes.
These
expand
our
understanding
patterns,
mechanisms,
influencing
rivers.
Microorganisms,
Journal Year:
2025,
Volume and Issue:
13(4), P. 921 - 921
Published: April 16, 2025
In
this
study,
we
investigated
the
adaptation
of
yellow-sand-substrate
Morchella
cultivation
in
desert
fringe
and
its
effect
on
soil
physicochemical
properties
microbial
communities.
The
qPCR
high-throughput
sequencing
with
null
modeling
analyzed
diversity,
networks,
assembly
under
nutrient
supplementation,
linking
changes
to
dynamics.
results
showed
that
yellow
sand
substrate
can
be
planted
area,
as
bags
resulted
a
yield
691
g/m2
fruit
units.
Cultivation
could
significantly
increase
substrate,
such
organic
matter
(SOM),
total
nitrogen
(TN),
ammonium
(NH4+−N),
amount
carbon
(MBC/MBN).
fungal
community
was
dominated
by
Ascomycota,
Basidiomycota,
Firmicutes,
Bacteroidota,
Actinobacteriota.
RDA
analysis
Ascomycota
Proteobacteria
were
positively
correlated
NH4+−N,
MBN,
SOM,
MBC,
acting
potassium
(AK),
TN,
C/N.
promoted
positive
correlation-dominant
network
pattern
substrate.
bag
treatment
reduced
bacterial
complexity
while
enhancing
complexity,
connectivity
stability,
accompanied
significant
increases
Proteobacteria,
Cladosporium,
Thermomyces
relative
abundances
during
until
original
degradation.
Deterministic
processes
communities,
morel
drove
toward
heterogeneous
selection
processes.
study
revealed
economic
value
application
potential
improving
sandy
soil,
which
is
great
importance
for
practical
mushrooms
desert.
