Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(36), P. 13588 - 13600
Published: Aug. 30, 2023
Although
our
understanding
of
the
effects
microplastics
on
dynamics
soil
organic
matter
(SOM)
has
considerably
advanced
in
recent
years,
fundamental
mechanisms
remain
unclear.
In
this
study,
we
examine
polyethylene
and
poly(lactic
acid)
SOM
processes
via
mineralization
incubation.
Accordingly,
evaluated
changes
carbon
dioxide
(CO2)
methane
(CH4)
production.
An
O2
planar
optical
sensor
was
used
to
detect
temporal
behavior
dissolved
during
incubation
determine
microscale
oxygen
heterogeneity
caused
by
microplastics.
Additionally,
(DOM)
were
using
a
combination
spectroscopic
approaches
ultrahigh-resolution
mass
spectrometry.
Microplastics
increased
cumulative
CO2
emissions
160–613%,
whereas
CH4
dropped
45–503%,
which
may
be
attributed
oxygenated
porous
habitats
surrounding
Conventional
biodegradable
changed
quantities
carbon.
microplastic
treatments,
DOM
with
more
polar
groups
detected,
suggesting
higher
level
electron
transport.
addition,
there
positive
correlation
between
concentration,
electron-donating
ability,
emission.
These
findings
suggest
that
facilitate
modifying
microenvironments,
transport
capability.
study
provides
new
insights
into
impact
dynamics.
Environmental Microbiology,
Journal Year:
2022,
Volume and Issue:
24(4), P. 2157 - 2169
Published: March 1, 2022
Summary
Microplastics
have
been
proposed
as
emerging
threats
for
terrestrial
systems
they
may
potentially
alter
the
physicochemical/biophysical
soil
environments.
Due
to
variety
of
properties
microplastics
and
soils,
microplastic‐induced
effects
in
ecosystems
are
greatly
manifold.
Here,
we
studied
three
polymer
(polyamide‐6,
polyethylene,
polyethylene
terephthalate)
on
with
four
different
types.
The
success
patterns,
interaction
relationships,
assembly
processes
bacterial
communities
were
also
studied.
potential
promote
CO
2
emissions
enhance
humification.
Even
though
did
not
significantly
diversity
composition
microbial
community,
application
decreased
network
complexity
stability,
including
size,
connectivity,
number
module
keystone
species.
community
was
governed
by
deterministic
selection
(77.3%–90.9%)
all
treatments,
while
increased
contribution
stochastic
from
9.1%
control
13.6%–22.7%.
neutral
model
results
indicated
most
taxa
present
predicted
region
(approximately
98%),
suggesting
importance
processes.
These
findings
provided
a
fundamental
insight
understanding
ecosystems.
Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
57(1), P. 5 - 24
Published: Dec. 19, 2022
Plastic
debris
is
an
established
environmental
menace
affecting
aquatic
systems
globally.
Recently,
microplastics
(MP)
and
plastic
leachates
(PL)
have
been
detected
in
vital
human
organs,
the
vascular
system,
vitro
animal
studies
positing
severe
health
hazards.
MP
PL
found
every
conceivable
ecosystem─from
open
oceans
deep
sea
floors
to
supposedly
pristine
glacier
lakes
snow
covered
mountain
catchment
sites.
Many
documented
impacts
on
a
variety
of
organisms,
whereby
some
exclusively
focus
microorganisms.
Yet,
specific
primary
producers
not
systematically
analyzed.
Therefore,
this
review
focuses
threats
posed
by
MP,
PL,
associated
chemicals
phytoplankton,
their
comprehensive
at
organismal,
community,
ecosystem
scales,
endogenous
amelioration.
Studies
MP-
PL-impacted
individual
phytoplankton
species
reveal
production
reactive
oxygen
species,
lipid
peroxidation,
physical
damage
thylakoids,
other
physiological
metabolic
changes,
followed
homo-
heteroaggregations,
ultimately
eventuating
decreased
photosynthesis
productivity.
Likewise,
analyses
microbial
community
plastisphere
show
radically
different
profile
compared
surrounding
planktonic
diversity.
The
also
enriches
multidrug-resistant
bacteria,
cyanotoxins,
pollutants,
accelerating
succession,
changing
microbiome,
thus,
diversity
evolution.
These
cellular
scales
manifest
changed
dynamics
with
widespread
bottom-up
top-down
effects
biodiversity
food
web
interactions.
adverse
effects─through
altered
nutrient
cycling─have
"knock-on"
biogeochemical
cycles
greenhouse
gases.
Consequently,
these
affect
provisioning
regulating
services.
Our
citation
network
(CNA)
further
demonstrate
dire
all
trophic
levels,
thereby
unsettling
stability
CNA
points
several
emerging
nodes
indicating
combined
toxicity
hazards
phytoplankton.
Taken
together,
our
study
shows
that
ecotoxicity
particles
placed
ecosystems
peril.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(36), P. 13588 - 13600
Published: Aug. 30, 2023
Although
our
understanding
of
the
effects
microplastics
on
dynamics
soil
organic
matter
(SOM)
has
considerably
advanced
in
recent
years,
fundamental
mechanisms
remain
unclear.
In
this
study,
we
examine
polyethylene
and
poly(lactic
acid)
SOM
processes
via
mineralization
incubation.
Accordingly,
evaluated
changes
carbon
dioxide
(CO2)
methane
(CH4)
production.
An
O2
planar
optical
sensor
was
used
to
detect
temporal
behavior
dissolved
during
incubation
determine
microscale
oxygen
heterogeneity
caused
by
microplastics.
Additionally,
(DOM)
were
using
a
combination
spectroscopic
approaches
ultrahigh-resolution
mass
spectrometry.
Microplastics
increased
cumulative
CO2
emissions
160–613%,
whereas
CH4
dropped
45–503%,
which
may
be
attributed
oxygenated
porous
habitats
surrounding
Conventional
biodegradable
changed
quantities
carbon.
microplastic
treatments,
DOM
with
more
polar
groups
detected,
suggesting
higher
level
electron
transport.
addition,
there
positive
correlation
between
concentration,
electron-donating
ability,
emission.
These
findings
suggest
that
facilitate
modifying
microenvironments,
transport
capability.
study
provides
new
insights
into
impact
dynamics.
