Tidal
flats
are
one
of
the
most
active
areas
geochemical
material
circulation,
which
not
only
regulates
ecological
environment
coastal
zone,
but
also
provides
rich
and
economic
value
for
human
beings.
In
this
study,
tidal
seas
between
estuaries
typical
large
river
basins
taken
as
research
area,
water
status
along
eastern
coast
China
is
studied
through
field
sampling,
numerical
simulation,
high-throughput
sequencing.
The
results
showed
that
due
to
differences
in
quality
total
pollutant
discharge
different
rivers
entering
sea,
study
area
could
be
divided
into
subregions
with
significant
microbial
community
characteristics.
construction
homogenous
selection
dominated,
a
ratio
62%.
general,
process
tends
consistent,
was
determined
by
deterministic
process,
especially
environmental
selectin.
Due
gross
characteristics
pollutants
discharged
sea
from
Huaihe
River
Yangtze
River,
wetland
mainly
affected
River.
zone
nitrogen
denitrification
occurred
zone,indicating
conducive
occurrence
microorganisms
reactions
Wetland
zone.
established
relationship
proposed
new
ideas
watershed
management
flat
protection.
Environment International,
Journal Year:
2025,
Volume and Issue:
195, P. 109280 - 109280
Published: Jan. 1, 2025
Water
diversion
projects
effectively
mitigate
the
uneven
distribution
of
water
resources
but
can
also
influence
aquatic
biodiversity
and
ecosystem
functions.
Despite
their
importance,
impacts
such
on
multi-domain
microbial
community
dynamics
underlying
mechanisms
remain
poorly
understood.
Utilizing
high-throughput
sequencing,
we
investigated
bacterial,
archaeal,
fungal
along
eastern
route
South-to-North
project
during
both
non-water
period
(NWDP)
(WDP).
Our
findings
revealed
competitive
exclusion
effects
among
bacterial
archaeal
communities
WDP,
characterized
by
decreased
species
richness
increased
biomass,
while
biomass
significantly
declined.
Distance-decay
relationships
suggested
homogenization
WDP.
Robustness
analyses
reduced
stability
with
primarily
influencing
stability,
environmental
factors
had
a
greater
impact
communities.
Stochastic
processes,
homogenizing
dispersal
drift,
intensified
for
Notably,
only
functional
diversity
relative
abundance
chemoheterotrophic
organic
compound
catabolic
bacteria
declined
photoautotrophic
bacteria.
PLS-PM
indicated
that
shaped
assembly
processes
guilds,
whereas
This
study
enhances
our
understanding
WDP
underscores
importance
assessing
direct
resulting
fluctuations.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
946, P. 174143 - 174143
Published: June 20, 2024
Antibiotic
resistance
genes
(ARGs)
are
a
growing
problem
that
is
widespread
in
river-lake
ecosystems,
where
they
pose
threat
to
the
aquatic
environment's
health
and
public
safety.
These
systems
serve
as
critical
nodes
water
management,
facilitate
equitable
allocation
of
resources
through
long-term
frequent
diversions.
However,
hydrological
disturbances
associated
with
water-regulation
practices
can
influence
dynamics
their
potential
host
microorganisms
genes.
Consequently,
identifying
key
ARGs
mechanisms
heavily
regulated
waters
vital
for
safeguarding
human
ecosystems.
In
this
study,
we
examined
impact
factors
on
hosts
within
continuum
using
16S
rRNA
metagenomic
sequencing.
We
found
significant
increase
ARG
abundance
during
regulation
periods
(p
<
0.05),
especially
environment.
Key
were
macB,
tetA,
evgS,
novA,
msbA,
increased
efflux
pinpointed
principal
mechanism.
Network
analysis
identified
Flavobacteriales,
Acinetobacter,
Pseudomonas,
Burkholderiaceae,
Erythrobacter
microorganisms,
which
showed
column
0.05).
Flow
velocity
depth
both
drove
ARGs.
Our
findings
underscore
importance
monitoring
mitigating
antibiotic
risk
transfers
systems,
thereby
supporting
informed
management
conservation
strategies.
