International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(7), С. 4104 - 4104
Опубликована: Апрель 7, 2024
Salt
is
frequently
introduced
in
ecosystems,
where
it
acts
as
a
pollutant.
This
study
examined
how
changes
salinity
affect
the
survival
and
development
of
zebrafish
from
two-cell
to
blastocyst
stage
larval
stage.
Control
embryos
were
cultured
E3
medium
containing
5
mM
Sodium
Chloride
(NaCl),
0.17
Potassium
(KCL),
0.33
Calcium
(CaCl2),
Magnesium
Sulfade
(MgSO4).
Experiments
conducted
using
increasing
concentrations
each
individual
salt
at
5×,
10×,
50×,
100×
concentration
found
medium.
KCL,
CaCl2,
MgSO4
did
not
result
lethal
abnormalities
early
embryo
growth
any
tested.
Concentrations
50×
NaCl
caused
embryonic
death
both
stages
development.
5×
10×
resulted
uninflated
swim
bladders
12%
65%
larvae,
compared
4.2%
controls,
1654
2628
genes
be
differentially
expressed
blastocysts,
respectively.
The
ATM
signaling
pathway
was
affected,
Sonic
Hedgehog
Shh
Ptc1
implicated
bladder
downregulated.
Our
findings
suggest
that
increased
may
alter
gene
expression
cause
developmental
animals
affected
ecosystems.
Abstract
Alongside
global
climate
change,
many
freshwater
ecosystems
are
experiencing
substantial
shifts
in
the
concentrations
and
compositions
of
salt
ions
coming
from
both
land
sea.
We
synthesize
a
risk
framework
for
anticipating
how
change
increasing
pollution
saltwater
intrusion
will
trigger
chain
reactions
extending
headwaters
to
tidal
waters.
Salt
‘chain
reactions,’
where
chemical
products
one
biogeochemical
reaction
influence
subsequent
ecosystem
responses.
Different
impact
drinking
water
quality,
ecosystems,
infrastructure,
energy
food
production.
Risk
factors
include
salinity
sources
due
amplification
pulses
interaction
precipitation
variability
human
activities.
Depending
on
other
factors,
retention
can
range
2
90%
across
watersheds
globally.
retained
interacts
with
cycles
along
flowpaths
contributes
‘fast’
‘slow’
associated
temporary
acidification
long-term
alkalinization
freshwaters,
impacts
nutrient
cycling,
CO
,
CH
4
N
O,
greenhouse
gases,
corrosion,
fouling,
scaling
deoxygenation,
contaminant
mobilization
freshwater-marine
continuum.
also
carbon
cycle
quantity
quality
organic
matter
transported
coasts.
identify
double
wide
services.
Our
salinization
is
based
analyses
of:
(1)
temporal
trends
tributaries
freshwaters
Chesapeake
Bay
freshening
mainstem
over
40
years
changes
streamflow,
sea
level
rise,
watershed
pollution;
(2)
loads
major
rivers
Eastern
U.S.
increased
riverine
exports
coastal
waters
sometimes
100-fold
greater
than
forest
reference
conditions;
(3)
varying
ion
concentration-discharge
relationships
at
Geological
Survey
(USGS)
sites
U.S.;
(4)
empirical
between
specific
conductance
Na
+
Cl
−
SO
2−
Ca
2+
Mg
K
USGS
(5)
dissolved
(DOC)
different
(6)
original
experiments
demonstrating
composition,
nutrients
metals,
alkalinization,
oxidation–reduction
potentials,
deoxygenation
non-tidal
The
activities
altering
sources,
transport,
storage,
reactivity
entire
helps
anticipate,
prevent,
manage
growing
water,
health,
aquatic
life,
agriculture,
Applied Sciences,
Год журнала:
2025,
Номер
15(11), С. 6222 - 6222
Опубликована: Май 31, 2025
Sewage
composition
analysis
is
important
for
understanding
environmental
impact
and
ensuring
effective
treatment
processes.
In
this
study,
we
employed
multivariate
techniques
to
delve
into
the
intricate
of
sewage.
Specifically,
utilized
Principal
Component
Analysis
(PCA)
Detrended
Correspondence
(DCA)
uncover
patterns
relationships
among
different
types
sewage
pollutants.
Statistical
revealed
that
stages
did
not
consistently
reduce
all
pollutant
concentrations.
Mechanical
failed
lower
chlorides
sulfates,
but
was
ether
extract
phenols.
Moreover,
total
mechanical–biological
provided
a
significant,
91%
reduction
phenols,
while
only
reducing
by
13%
sulfates
22%.
The
significant
differences
between
raw
mechanically
treated
Totally
stood
out
as
key
factor
influencing
pollutants
studied,
particularly
sulfates.
This
finding
emphasizes
critical
role
comprehensive
processes
in
management.
Among
analysed
substances,
showed
strongest
clustering
potential,
with
an
average
Silhouette
coefficient
0.738,
highest
observed.
Phenols,
on
other
hand,
exhibited
Within-Cluster
Sum
Squares
(WCSS),
suggesting
their
potential
alternative
parameter
evaluation.
Infrastructures,
Год журнала:
2024,
Номер
9(6), С. 95 - 95
Опубликована: Июнь 11, 2024
Permeable-pavement
design
methodologies
can
improve
the
hydrologic
and
therefore
environmental
benefits
of
rural
urban
roadway
systems.
By
contrast,
conventional
impervious
pavements
perturb
cycle,
altering
relationship
between
rainfall
loading
runoff
response.
Impervious
create
a
hydraulically
conductive
interface
for
transport
traffic-generated
chemicals
particulate
matter
(PM),
deleteriously
impacting
their
proximate
environments.
systems
are
countermeasures
to
mitigate
hydrologic,
chemical,
PM
impacts.
However,
permeable
not
always
equally
implementable
due
costs,
loadings,
constraints.
A
potential
solution
facilitate
while
meeting
traffic
load
capacity
is
combination
two
filtration
placed
at
pavement
shoulders
and/or
pedestrian
sidewalks:
bituminous-pavement
open-graded
friction
course
(BPFC)
an
aggregate-filled
infiltration
trench.
This
presented
in
this
manuscript
together
with
methodological
framework
first
results
investigations
into
designing
validating
such
combined
system.
The
research
was
conducted
laboratories
Polytechnic
University
Bari
Florida,
operational
full-scale
physical
model
constructed
Bari,
Italy.
characterize
deposition
on
public
roads
based
granulometry
(particle
size
distributions
(PSDs)
particle
number
densities
(PNDs)).
Samples
(n
=
16)
were
collected
analyzed
eight
different
sites
land
uses,
traffic,
from
cities
(Bari
Taranto,
Italy).
analysis
showed
similar
(PSDs
PNDs),
except
samples.
gravimetric-based
PSDs
had
granulometric
sand-size
range.
In
PNDs,
modeled
by
Power
Law
Model
(PLM)
(R2
≥
0.92),
illustrated
exponentially
increasing
particles
fine
silt
clay-size
range,
representing
less
than
10%
PSD
mass.
Moreover,
indicate
that
sourced
permeable-pavement
has
differing
impacts
service
life.
Frontiers in Environmental Science,
Год журнала:
2023,
Номер
11
Опубликована: Май 26, 2023
In
urbanized
areas,
the
“freshwater
salinization
syndrome”
(FSS),
which
pertains
to
long-term
increases
in
concentrations
of
major
ions
and
metals
fresh
surface
waters,
has
been
attributed
road
salt
application.
addition
FSS,
water
composition
changes
as
an
influx
sodium
(Na
+
)
recharge
may
displace
calcium
(Ca
2+
),
magnesium
(Mg
potassium
(K
trace
by
reverse
cation
exchange.
These
changing
ion
fluxes
can
result
adverse
impacts
on
groundwater
waters
used
for
municipal
supplies.
Few
datasets
exist
quantify
FSS
a
watershed
scale
or
link
its
manifestation
potential
controlling
factors
such
urban
development,
land
use/land
cover
(LULC),
wastewater
treatment
plant
(WWTP)
discharges
upstream
areas.
Here,
we
use
two
decades
(1999–2019)
monthly
streamwater
quality
data
combined
with
daily
streamflow
six
exurban
suburban
watersheds
southeastern
Pennsylvania
examine
relations
among
Ca
,
Mg
K
Na
chloride
(Cl
−
sulfate
(SO
4
2-
alkalinity
(HCO
3
factors.
Flow-normalized
annual
baseflow
(August
̶
November)
Cl
increased
all
over
20-year
study,
providing
evidence
FSS’s
that
sustains
streamflow.
Additionally,
redundancy
analysis
using
2019
flow-normalized
values
identified
following
positive
associations
between
solute
variables:
1)
impervious
(ISC),
2)
SO
ISC
total
WWTP
discharge
volume,
3)
HCO
agriculture
volume.
From
human
health
perspective,
exceeded
U.S.
Environmental
Protection
Agency’s
20
mg
L
-1
threshold
individuals
restricted
low
diet.
Furthermore,
indices
evaluate
corrosivity
source
drinking
infrastructure
inform
practices,
Chloride
Sulfate
Mass
Ratio
Larson
Ratio,
two-
seven-fold
time.
Collectively,
results
elucidate
causal
infrastructure.