Processes,
Год журнала:
2023,
Номер
11(9), С. 2656 - 2656
Опубликована: Сен. 5, 2023
The
coal
pillar
dam
of
underground
reservoirs
and
residual
in
goaves
have
a
direct
impact
on
the
quality
mine
water.
In
this
paper,
an
reservoir
goaf
water
Daliuta
are
used
as
research
objects.
adsorption
mechanism
with
respect
to
NO3−
was
analyzed
by
carrying
out
experiments.
composition
variation
organic
matter
at
different
times
were
simulated
using
three-dimensional
fluorescence
spectrum
analysis.
influence
microorganisms
change
contents
explored.
Moreover,
changes
body
clarified.
results
showed
that
concentration
first
decreased
then
increased,
showing
downward
trend
whole.
led
decrease
its
concentration,
which
conformed
pseudo-second-order
kinetic
model
Freundlich
isothermal
model,
indicating
process
is
mainly
carried
via
chemical
multi-layer
adsorption.
increase
caused
hydrolysis
tryptophan
other
protein-like
substances
into
nitrate
under
action
microorganisms.
Journal of Geophysical Research Oceans,
Год журнала:
2025,
Номер
130(3)
Опубликована: Март 1, 2025
Abstract
Hadal
trenches
have
recently
been
recognized
as
hotspots
for
organic
carbon
burial
and
degradation
in
the
deep
sea
owing
to
its
distinctive
“funnel‐shaped”
topography
frequent
tectonic
activity.
In
this
study,
we
analyzed
dissolved
(DOC)
concentration,
optical
properties,
molecular
compositions
of
water‐extractable
matter
(WEOM)
sediment
samples
collected
along
two
transects
spanning
diverse
marine
environments
New
Britain
Trench
(NBT)
area.
A
significant
positive
correlation
between
DOC
concentrations
total
(TOC)
contents
sediments
emphasizes
crucial
role
(OM)
supply
production
hadal
environment.
addition,
parameters
(e.g.,
fluorescence
index,
a
350
/DOC)
suggest
remarkable
influences
terrestrial
OM
on
composition
(DOM)
NBT
sediments.
Indeed,
correlations
stable
isotopes
sedimentary
TOC
(δ
13
C)
related
(SUVA
254
,
/DOC,
S
R
humic‐like)
indicate
that
microbial
has
an
important
impact
DOM.
Moreover,
analysis
DOM
showed
increased
aromaticity
double
bond
equivalents
equivalent
western
landward
core
axis
cores,
also
suggesting
enhanced
OM.
The
input
into
led
aromatic,
refractory,
high
weight
Our
findings
implications
understanding
fate
ocean.
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 21, 2024
Abstract
Appendicularians
are
recognized
as
one
of
the
most
abundant
mesozooplankton
groups
in
numerous
pelagic
environments
and
they
play
a
crucial
role
marine
ecosystems
bridge
gap
between
primary
producers
higher
trophic
levels
food
webs.
Zooplankton
samples
were
collected
during
three
spring
oceanographic
surveys
conducted
2014,
2015,
2016,
coastal
zone
(Staten
Island)
oceanic
(Namuncurá-Banco
Burdwood
Marine
Protected
Area).
Our
study
focuses
on
comparative
analysis
species
composition,
density,
biomass,
maturity
stages
appendicularia
these
regions,
which
marked
by
distinct
physical
biological
attributes.
Two
appendicularians
found
area,
Oikopleura
fusiformisFritillaria
borealis,
former
being
dominant.
Their
distribution
was
different
because
F.
borealis
mainly
concentrated
while
O.
consistently
recorded
both
zones.
Chlorophyll-a
concentrations
to
be
than
zone.
These
accompanied
densities
that
area.
The
surface
current
velocity
seems
reflect
total
phytoplankton
biomass
On
other
hand,
temperature
for
protected
area
lower
could
related
larger
sizes
Baseline
data
areas
surrounding
is
essential
contribute
stakeholders
advise
future
changes
translate
into
regional
global
processes.
