Journal of Geophysical Research Biogeosciences,
Год журнала:
2023,
Номер
128(2)
Опубликована: Фев. 1, 2023
Abstract
Net
ecosystem
production
(NEP)
by
submerged
aquatic
vegetation
plays
a
substantial
role
in
capturing
atmospheric
carbon
dioxide
into
ecosystems.
In
lakes
and
estuaries,
the
net
uptake
of
is
mediated
stratification
water
column
which
suppresses
vertical
flux
between
upper
lower
layers.
The
presence
can
also
affect
strength
such
that
interactions
vegetation,
stratification,
NEP
moderate
emissions.
Since
occur
there
need
for
new
numerical
approach
able
to
consider
effect
on
NEP,
dioxide.
This
study
aims
develop
model
investigate
how
density
flexibility,
affects
partial
pressure
(
p
CO
2
)
dissolved
inorganic
(DIC).
After
initial
parameterization
coefficients
based
experimental
work,
horizontal
variations
DIC
were
successfully
modeled
spatially
(horizontally)
integrated
(SiDIC)
model,
was
validated
with
field
observations
from
an
estuarine
freshwater
lake
case
study.
SiDIC
reproduce
changes
daytime
nighttime
throughout
column.
Sensitivity
tests
showed
fluctuation
controlled
suppression
due
vegetation.
results
highlight
importance
resolving
vegetation‐induced
when
modeling
budget
within
coastal
environments.
Limnology and Oceanography Methods,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 21, 2025
Abstract
Water
clarity
regulates
irradiance
penetration
in
aquatic
environments,
influencing
physical
and
biological
dynamics:
affects
heat
transfer
the
water
column
provides
energy
through
photosynthetically
active
radiation
(PAR)
euphotic
zone,
which
is
vital
for
light‐dependent
organisms.
The
ability
to
accurately
assess
therefore
important
several
science
contexts,
from
data
analysis
process
interpretation
modeling.
Common
metrics
used
quantify
include
vertical
attenuation
coefficient
,
a
measure
of
penetration,
Secchi
disk
depth
(),
visibility.
enduring
simplicity
low
cost
has
made
it
global
standard
measuring
almost
two
centuries.
In
contrast,
typically
determined
using
expensive
instruments
that
underwater
profiles.
This
highlights
need
innovative,
cost‐effective
methods
integrate
both
types
measurements.
Here
we
present
DISCO,
low‐cost,
easy‐to‐build
instrument
retains
traditional
appearance
disk,
equipped
with
photoresistors
(also
known
as
resistors,
LDRs)
looking
upwards
downwards
planar
DISCO
also
low‐cost
temperature
pressure
sensors,
all
connected
an
ArduinoUNO
board.
was
tested
mountain
lakes
together
high
resolution
PAR,
sensors
calibrate
LDRs
validate
its
performance.
results
show
proposed
able
coefficients
error
less
than
10
compared
reference
PAR
sensor.
The Science of The Total Environment,
Год журнала:
2021,
Номер
803, С. 150044 - 150044
Опубликована: Сен. 3, 2021
A
typhoon
is
extreme
weather
that
flushes
terrestrial
carbon
(C)
loads
and
temporally
mixes
the
entire
water
columns
of
lakes
in
subtropical
regions.
C
flux
varies
based
on
trophic
level
associated
with
ecological
cycle
related
to
hydraulic
retention
time
(residence
time).
Herein,
we
sought
clarify
how
disturbance
from
a
affect
regimes
two
mountain
humid
region
Taiwan
different
levels—oligotrophic
mesotrophic.
We
investigated
meteorological
data
vertical
profiles
temperature,
dissolved
inorganic
(DIC),
organic
(DOC),
chlorophyll
(Chl.
a)
during
pre-typhoon
period
(April–July),
(August–November),
post-typhoon
(December–March)
for
five
years
(2009–2010
2015–2017).
applied
three-dimensional
environmental
model
(Fantom)
investigate
effect
net
ecosystem
production
(NEP)
using
residence
stratified
lakes.
The
results
demonstrate
typhoon-induced
mixing
plays
one
critical
roles
controlling
NEP
shallow
Heliyon,
Год журнала:
2023,
Номер
9(10), С. e20322 - e20322
Опубликована: Сен. 20, 2023
Carbon
capture
and
storage
due
to
photosynthesis
activities
has
been
proposed
as
a
carbon
sink
mitigate
climate
change.
To
enhance
such
mitigation,
previous
studies
have
shown
that
freshwater
lakes
should
be
included
in
the
sink,
since
they
may
much
coastal
areas.
In
eutrophic
lakes,
there
is
uncertainty
about
whether
equilibrium
equation
can
estimate
partial
pressure
of
dioxide
(pCO2),
owing
presence
phytoplankton,
pH
measurement
error
fluid.
Thus,
this
study
investigated
applicability
revealed
need
modify
it.
The
modified
was
successfully
applied
reproduce
pCO2
based
on
total
alkalinity
through
field
observations.
addition,
at
water
surface
lower
than
atmospheric
by
phytoplankton
during
strong
stratification.
stratification
effect
low
verified
using
Net
Ecosystem
Production
(NEP)
model,
submerged
plants
Potamogeton
malaianus
were
found
high
potential
for
dissolved
inorganic
(DIC)
sequestration
lake.
These
results
provide
starting
point
toward
more
sophisticated
methods
investigate
DIC
uptake
stratified
lakes.
Frontiers in Marine Science,
Год журнала:
2023,
Номер
9
Опубликована: Янв. 9, 2023
Research
and
social
implementation
related
to
carbon
in
marine
freshwater
ecosystems
are
increasingly
gaining
emphasis
the
global
quest
achieve
neutrality.
It
is
important
not
only
advance
academic
research,
but
also
solve
practical
problems
for
improved
understanding,
maintenance,
dissemination
of
information
on
or
areas.
In
this
study,
we
conducted
a
questionnaire
survey
participants
activities
areas
Japan
clarify
which
issues
were
considered
their
understanding
degree
had
been
achieved.
Based
responses
all
questions,
77.9%
respondents,
average,
among
practitioners
recognized
importance
program
strongly,
while
46.5%
that
achievement
was
insufficient.
This
tendency
more
pronounced
than
areas(72.2%
48.6%,
respectively).
The
results,
grouped
by
respondent
attributes,
revealed
perception
level
varied
depending
organization
activity,
age,
years
knowledge
and/or
Practitioners
with
greater
experience
those
working
specific
implementations
perceived
implementation-related
aspects
as
less
accomplished
ones.
study
provides
valuable
insights
into
research
