Hydrological Processes,
Journal Year:
2023,
Volume and Issue:
37(9)
Published: Sept. 1, 2023
Abstract
Global
warming
alters
the
inherent
variability
of
climate
variables
and
induces
more
frequent
extremes
hydroclimatic
compound
events
with
substantial
impacts.
The
concurrence
hydrological
drought
saltwater
intrusion
in
estuary
can
have
devastating
effects
on
agricultural
production,
water
security,
ecological
health.
In
this
study,
extreme
indices,
including
Blend
Drought
Saltwater
Index
(BDSI),
Compound
(CDSI)
Standardized
(SDSI),
were
constructed
to
monitor
critical
zone
Pearl
River
Estuary
during
dry
season
from
1999
2016.
results
reveal
that
three
indices
effectively
depict
different
aspects
Estuary.
Among
SDSI
performed
best
depicting
drought‐saltwater
events,
while
BDSI
outperformed
other
high
value
Runoff
(SRI)
(SSI),
CDSI
low
values
SRI
SSI.
Using
those
developed
we
found
frequency
abnormal
moderate
increased
9.26%
12.03%
period
1999–2016,
severe,
exceptional
rare.
Ecological Indicators,
Journal Year:
2022,
Volume and Issue:
146, P. 109820 - 109820
Published: Dec. 21, 2022
In
estuary,
bacteria
are
critically
vital
to
ecosystem
function
and
sustainability.
However,
the
effect
of
geographic
distance
its
related
factors
(i.e.,
salinity
nutrients)
on
bacterial
diversity,
co-occurrence,
as
well
community
assembly
abundant
rare
species
scale
remained
be
discussed.
this
study,
we
deciphered
dynamics
ecological
processes
in
anthropogenic
estuary
Haihe
River,
China.
The
results
revealed
that
was
major
abiotic
factor
shape
composition,
network
complexity,
role
biotic
cytometric
characteristics
considerable
well.
Furthermore,
gradient
tended
select
with
low
nucleic
acid
(LNA)
such
Candidatus
Pelagibacter
Longivirga,
were
more
sensitive
comparison
ones.
similar
keystone
number
topology
values
indicated
both
played
important
functions
degrading
pollutants,
developing
co-occurrence
networks,
maintaining
compositional
stability
complexity.
addition,
drift
dispersion
limitation
dominated
assembly,
suggesting
although
caused
migration
species,
still
weaker
than
stochastic
processes.
Further,
niche
differentiation
contributed
different
components
species.
high-salinity
areas,
small
population
sizes
but
high
diversity
enriched,
which
made
affected
by
drift.
Our
study
illustrated
responses
process
communities
deepening
understanding
their
estuarine
ecosystem.
Frontiers in Marine Science,
Journal Year:
2025,
Volume and Issue:
12
Published: April 7, 2025
Expanded
polystyrene
(EPS)
has
caused
significant
pollution
in
marine
environments,
with
potential
EPS-degrading
bacteria
identified
on
long-term
floating
EPS
biofilms.
However,
studies
bacterial
interactions
and
consortium
reconstruction
based
in-situ
diversity
remain
limited.
Marine
wastes
of
different
sizes
were
collected
from
subtropical
coast
Xiamen
island,
subjected
to
analyses.
Co-occurrence
network
characterization
revealed
that
Rhodobacterales
Rhizobiales
play
important
roles
(PS)
degradation.
Bacterial
isolation
confirmed
Fulvimarina
pelagi
,
Pseudosulfitobacter
pseudonitzschiae
Devosia
nitrariae
Cytobacillus
kochii
oceanisediminis
as
novel
PS-degraders.
Based
their
abundance
situ
PS
degradation
activity,
a
was
constructed,
constituted
F.
P.
halotolerans
.
O.
granulosus
showed
high
capability
weight
loss
by
18.9%
45
days.
These
results
contribute
plastic
remediation
resources
recycling.
