We
sampled
Pacific
oysters
(Crassostrea
gigas)
from
22
sites
in
a
temperate
region
and
statistically
tested
the
effects
of
heavy
metal
pollution
environmental
trophic
states
on
accumulation
oysters.
Cu,
Zn,
Pb
contents
were
positively
related
to
their
sediment,
serving
as
proxy
for
local
pollution,
while
As
Cr
not.
Cu
Zn
also
negatively
DIN
concentration.
Additionally,
showed
positive
relationships
with
POC
concentration
particle
δ¹³C,
but
no
relationship
DIN.
These
findings
suggest
that
marine
status
significantly
affects
uptake
by
oysters,
these
are
dependent
species
complex.
Furthermore,
Cr,
oysters'
EPA
condition
index,
suggesting
nutritional
influences
elimination
or
metals.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Jan. 30, 2024
Abstract
In
coastal
seas,
the
role
of
atmospheric
deposition
and
river
runoff
in
dissolved
organic
phosphorus
(DOP)
utilization
is
not
well
understood.
Here,
we
address
this
knowledge
gap
by
combining
microcosm
experiments
with
a
global
approach
considering
relationship
between
activity
alkaline
phosphatases
changes
phytoplankton
biomass
relation
to
concentration
inorganic
(DIP).
Our
results
suggest
that
addition
aerosols
riverine
water
stimulate
biological
DOP
seas
primarily
depleting
DIP
due
increasing
nitrogen
concentrations,
which
enhances
growth.
This
“Anthropogenic
Nitrogen
Pump”
was
therefore
identified
make
an
important
source
for
but
only
when
ratio
chlorophyll
[Log
10
(Chl
/
DIP)]
larger
than
1.20.
study
suggests
anthropogenic
input
might
contribute
cycle
seas.
Processes,
Journal Year:
2024,
Volume and Issue:
12(2), P. 311 - 311
Published: Feb. 1, 2024
Intertidal
sediments
are
rich
in
biological
resources,
which
important
for
material
circulation
and
energy
exchange.
Meanwhile,
these
areas
can
be
treated
as
sinks
well
sources
of
coastal
heavy
metal
pollutants.
Due
to
the
influence
tide,
intertidal
a
state
periodic
flooding
exposure,
environmental
factors
such
dissolved
oxygen,
salinity
overlying
water
pressure
changeable.
Heavy
metals
prone
migration
transformation
with
dynamic
effects
tidal
changes
environment
factors,
increase
bioavailability
metals.
In
this
review,
characteristics
distribution
described;
behavior
its
influencing
under
conditions
analyzed;
mechanisms
metal’s
zone
summarized.
Moreover,
bioaccumulation
by
organisms
remediation
techniques
discussed.
Therefore,
review
systematically
summarizes
states
existence,
transport
mechanisms,
fate
sediment,
fills
research
gap
cycling
zone,
provides
theoretical
basis
control
pollution.
