Abstract.
Potentially
acting
as
a
source
or
sink
for
plastic
pollution
to
the
open
ocean,
nearshore
waters
remain
challenging
context
predicting
transport
and
deposition
of
debris.
In
this
study,
we
present
an
advanced
modelling
approach
based
on
SWASH
wave
model
TrackMPD
(v3.0)
particle
investigate
dynamics
floating
sinking
microplastics
in
wave-dominated
environments.
This
introduces
novel
features
such
coupling
with
turbulence
models,
simulating
resuspension
bedload
processes,
implementing
settling
rising
velocity
formulations,
enabling
parallel
computation.
The
laboratory
experiments
conducted
by
Forsberg
et
al.
(2020)
were
simulated
validate
model's
ability
reproduce
diverse
(varying
density,
shape,
size)
along
comprehensive
beach
profile,
capturing
whole
water
column.
Our
results
underscore
robustness
proposed
model,
showing
good
agreement
experimental
data.
High-density
moved
onshore
near
bed
accumulating
proximity
wave-breaking
zone,
while
distribution
low-density
particles
varied
coastal
profile
depending
properties.
study
also
sheds
light
primary
mechanisms
driving
microplastic
transport,
Stokes
drift,
asymmetry
settling/rising
velocities.
Sensitivity
analyses
calibration
parameters
further
confirm
influence
these
factors
patterns.
research
establishes
SWASH-TrackMPD
valuable
tool,
opening
avenues
future
studies
contextualize
findings
within
complexities
real-world
environments
refine
our
comprehension
across
different
beaches
wave-climate
conditions.
Geoscientific model development,
Год журнала:
2025,
Номер
18(2), С. 319 - 336
Опубликована: Янв. 22, 2025
Abstract.
Potentially
acting
as
a
source
or
sink
for
plastic
pollution
to
the
open
ocean,
nearshore
waters
remain
challenging
context
predicting
transport
and
deposition
of
debris.
In
this
study,
we
present
an
advanced
modeling
approach
based
on
SWASH
wave
model
TrackMPD
(v3.0)
particle
investigate
dynamics
floating
sinking
microplastics
in
wave-dominated
environments.
This
introduces
novel
features
such
coupling
with
turbulence
models,
simulating
resuspension
bedload
processes,
implementing
settling
rising
velocity
formulations,
enabling
parallel
computation.
The
laboratory
experiments
conducted
by
Forsberg
et
al.
(2020)
were
simulated
validate
model's
ability
reproduce
diverse
(varying
density,
shape,
size)
along
comprehensive
beach
profile,
capturing
whole
water
column.
Our
results
underscore
robustness
proposed
model,
showing
good
agreement
experimental
data.
High-density
moved
onshore
near
bed,
accumulating
proximity
wave-breaking
zone,
while
distribution
low-density
particles
varied
coastal
profile
depending
properties.
study
also
sheds
light
primary
mechanisms
driving
microplastic
transport,
Stokes
drift,
asymmetry,
settling/rising
velocities.
Sensitivity
analyses
calibration
parameters
further
confirm
influence
these
factors
patterns.
research
establishes
SWASH–TrackMPD
valuable
tool,
opening
avenues
future
studies
contextualize
findings
within
complexities
real-world
environments
refine
our
comprehension
across
different
beaches
wave-climate
conditions.
Journal of Hazardous Materials,
Год журнала:
2025,
Номер
489, С. 137609 - 137609
Опубликована: Фев. 12, 2025
Fishing
nets
(FNs)
represent
a
significant
source
of
plastic
waste,
but
their
contribution
to
pollution
by
micro-
and
nanoplastics
(MNPs)
associated
additives
is
poorly
understood.
We
studied
the
degradation
high-performance-polyethylene-polypropylene
(HPPE-PP)
trawl
net
two
trammel
made
polyamide
6
(PA6)
or
biodegradable
polybutylene-succinate-polybutyrate-adipate-terephthalate
(PBS-PBAT).
Accelerated
artificial
ageing
(AA)
was
performed
using
UV
irradiation
under
environmental
extreme
conditions
followed
abrasion
in
water
with
glass
microbeads.
FN
organic
compound
release
were
as
well
toxicity
leachates
on
marine
bacteria
Allivibrio
fischeri
larvae
fish
Oryzias
latipes.
AA
FNs
caused
slight
polymer
did
not
produce
MNPs.
However,
conditions,
PA6
PBS-PBAT
produced
9.1
×
104
MP/mL
2.0
MP/mL,
respectively.
released
total
27
compounds
from
which
7
quantified
at
concentrations
between
0.35
µg/L
(Phthalimide)
200
(Succinic-acid
2-methylallyl-undecyl-ester).
Only
induced
bacteria,
bioluminescence
inhibition
ranging
26
%
56
%.
Exposure
disrupted
behavior.
highest
behavior
stress
indicator
day
12
(8.5),
25
(8)
HPPE-PP
(7).
concluded
that
related
more
than
MPs.
The
bio-based
should
be
further
evaluated
before
wider
implementation
fishing
sector.
Microplastics,
Год журнала:
2025,
Номер
4(1), С. 12 - 12
Опубликована: Март 5, 2025
This
study
focuses
on
the
deposition
of
microplastics
(MPs)
urban
beaches
along
central
São
Paulo
coastline,
utilizing
advanced
methodologies
such
as
remote
sensing,
GNSS
altimetric
surveys,
µ-Raman
spectroscopy,
and
machine
learning
(ML)
models.
MP
concentrations
ranged
from
6
to
35
MPs/m2,
with
highest
densities
observed
near
Port
Santos,
attributed
industrial
port
activities.
The
predominant
types
identified
were
foams
(48.7%),
fragments
(27.7%),
pellets
(23.2%),
while
fibers
rare
(0.4%).
Beach
slope
orientation
found
facilitate
concentration
deposition,
particularly
for
pellets.
study’s
ML
models
showed
high
predictive
accuracy,
Random
Forest
Gradient
Boosting
performing
exceptionally
well
specific
categories
(pellet,
fragment,
fiber,
foam,
film).
Polymer
characterization
revealed
prevalence
polyethylene,
polypropylene,
polystyrene,
reflecting
sources
disposable
packaging
raw
materials.
findings
emphasize
need
improved
waste
management
targeted
beach
cleanups,
which
currently
fail
address
smaller
MPs
effectively.
research
highlights
critical
role
combining
in
situ
data
understand
dynamics
coastal
environments.
It
provides
actionable
insights
mitigation
strategies
contributes
global
efforts
aligned
Sustainable
Development
Goals,
SDG
14,
aimed
at
conserving
marine
ecosystems
reducing
pollution.
Frontiers in Environmental Science,
Год журнала:
2025,
Номер
13
Опубликована: Май 27, 2025
Microplastics
have
become
prominent
environmental
pollutants
in
both
marine
and
freshwater
systems,
which
raises
ecological
health
concerns.
This
study
provides
a
comprehensive
meta-analysis
of
microplastic
concentration
data
from
over
60
studies
across
Europe,
investigating
factors
influencing
distribution.
The
investigated
influences
include
sampling
latitude,
proximity
to
wastewater
treatment
plants,
population
density
the
area,
mesh
size,
distance
coastlines,
seasonal
variations,
wind
speeds.
results
indicate
that
concentrations
correlate
with
size
but
not
environments,
suggesting
predominant
type
fresh
waters
be
primary
microplastics.
Although
it
is
generally
accepted,
waste
water
plants
contribute
pollution,
this
identifies
other
more
significant
factors,
such
as
surface
runoff
atmospheric
deposition.
Population
shows
modest
influence,
while
site
coastlines
is,
contrary
findings
publications,
significantly
related
levels.
Seasonal
speed
effects
are
complex,
varied
impacts
locations
used
correction
critically
reevaluated.
analysis
underscores
need
for
standardized
methodologies
research,
recommends
specific
practices
enhance
comparability
studies,
contributes
accurate
assessment
pollution
aquatic
environments.
Environmental Pollution,
Год журнала:
2024,
Номер
357, С. 124440 - 124440
Опубликована: Июнь 25, 2024
The
characterization
of
microplastic
(MP)
contamination
in
marine
species
is
increasing
as
concerns
about
environmental
and
food
safety
are
more
discussed.
Here,
we
reported
a
quantitative
qualitative
assessment
the
by
anthropogenic
particles
(from
visual
sorting;
AP)
MP
(plastic-made)
whole
soft
body
or
digestive
tract
species.
Four
commercial
were
studied,
namely
Pacific
oyster
(Magallana
gigas),
spiny
spider
crab
(Maja
sp.),
common
sole
(Solea
solea)
seabass
(Dicentrarchus
labrax
punctatus).
AP
uptake
studied
over
three
to
four
seasons
depending
on
After
tissues
digestion,
extracted
under
stereomicroscope
morphometric
characteristics
reported.
Then,
polymers
identified
ATR-FTIR
spectroscopy.
Seasonal
variations
mainly
described
was
lower
autumn
higher
spring.
These
may
be
linked
reproduction
growth
cycles
this
Moreover,
ingestion
compared
winter.
Contamination
crabs
soles
showed
either
weak
no
seasonal
trends,
both
quantitatively
qualitatively.
Overall,
all
ranged
from
1.17
±
1.89
AP.ind
Abstract.
Potentially
acting
as
a
source
or
sink
for
plastic
pollution
to
the
open
ocean,
nearshore
waters
remain
challenging
context
predicting
transport
and
deposition
of
debris.
In
this
study,
we
present
an
advanced
modelling
approach
based
on
SWASH
wave
model
TrackMPD
(v3.0)
particle
investigate
dynamics
floating
sinking
microplastics
in
wave-dominated
environments.
This
introduces
novel
features
such
coupling
with
turbulence
models,
simulating
resuspension
bedload
processes,
implementing
settling
rising
velocity
formulations,
enabling
parallel
computation.
The
laboratory
experiments
conducted
by
Forsberg
et
al.
(2020)
were
simulated
validate
model's
ability
reproduce
diverse
(varying
density,
shape,
size)
along
comprehensive
beach
profile,
capturing
whole
water
column.
Our
results
underscore
robustness
proposed
model,
showing
good
agreement
experimental
data.
High-density
moved
onshore
near
bed
accumulating
proximity
wave-breaking
zone,
while
distribution
low-density
particles
varied
coastal
profile
depending
properties.
study
also
sheds
light
primary
mechanisms
driving
microplastic
transport,
Stokes
drift,
asymmetry
settling/rising
velocities.
Sensitivity
analyses
calibration
parameters
further
confirm
influence
these
factors
patterns.
research
establishes
SWASH-TrackMPD
valuable
tool,
opening
avenues
future
studies
contextualize
findings
within
complexities
real-world
environments
refine
our
comprehension
across
different
beaches
wave-climate
conditions.
