Critical Reviews in Environmental Science and Technology,
Год журнала:
2011,
Номер
41(sup1), С. 382 - 394
Опубликована: Фев. 17, 2011
Three
hurricanes
(Frances
and
Jeanne
in
2004
Wilma
2005)
passed
over
Lake
Okeechobee
causing
a
number
of
changes
its
sediment
environment.
The
unconsolidated
atop
the
mud
sediments
central
region
lake
became
thicker
due
to
settling
deposition
resuspended
after
passed.
increased
layer
was
more
easily
resuspended,
resulted
sustained
higher
solids
nutrient
concentrations
lower
light
transparency
water
column
for
than
4
years
Hurricanes
Frances
disturbed
consolidated
depth
7–15
cm
from
surface
while
Hurricane
extended
disturbance
25
cm.
Concentrations
total
suspended
(TSS)
four
sixfold
hurricanes.
high
concentration
TSS
continuous
maintained
2–4
times
normal
situation
until
present.
contributed
decrease
submerged
aquatic
vegetation
(SAV)
density
4–34
g
dw/m2
0.1–4
primarily
through
scouring.
SAV
recovery
very
slow
increasing
turbidity
reduced
transparency.
Journal of Geophysical Research Earth Surface,
Год журнала:
2020,
Номер
125(8)
Опубликована: Июль 22, 2020
Abstract
Salt
marshes
are
dynamic
systems
able
to
laterally
expand,
contract,
and
vertically
accrete
in
response
sea
level
rise.
Here,
we
present
the
grand
challenges
that
need
be
addressed
fully
characterize
marsh
morphodynamics.
The
review
focuses
on
physical
processes
quantitative
models.
Without
predictive
models,
it
is
impossible
determine
future
evolution
under
accelerated
In
these
one
of
resolve
both
horizontal
vertical
dynamics
within
same
framework.
Vertically,
has
accumulate
enough
material
contrast
rising
water
levels.
Horizontally,
erosion
at
ocean
side
must
compensated
by
landward
expansion
forests,
lawns,
agricultural
fields.
marsh‐upland
boundary
still
not
understood
will
require
more
research
upcoming
years.
complexity
vegetation
seldom
captured
models
evolution.
More
needed
understand
effects
each
species
or
assemblages
hydrodynamics
sediment
transport.
further
advocate
a
budget
resolving
all
fluxes
complex
most
important
metric
resilience.
Characterization
enable
connect
salt
other
landforms
unravel
feedbacks
controlling
entire
coastal
system.
Current
rely
sparse
data
sets
collected
few
locations.
Novel
remote
sensing
techniques
provide
high‐resolution
spatial
inform
new
generation
computer
Water,
Год журнала:
2016,
Номер
8(6), С. 243 - 243
Опубликована: Июнь 7, 2016
This
paper
reviews
aspects
of
the
performance
large
(>40
ha)
constructed
treatment
wetlands
intended
for
phosphorus
control.
Thirty-seven
such
have
been
built
and
good
data
records,
with
a
median
size
754
ha.
All
are
successfully
removing
from
variety
waters.
Period
record
concentration
reductions
were
71%,
load
0.77
gP·m−2·year−1,
rate
coefficients
12.5
m·year−1.
Large
narrower
spectrum
than
larger
group
all
sizes.
Some
systems
display
startup
trends,
ranging
to
several
years,
likely
resulting
antecedent
soil
vegetation
conditions.
There
internal
longitudinal
gradients
in
concentration,
which
vary
lateral
position
flow
Accretion
inlet
zones
may
require
attention.
Concentrations
reduced
plateau
values,
range
about
10–50
mgP·m−3.
Vegetation
type
has
an
effect
upon
measures,
its
presence
facilitates
performance.
Trends
measures
over
history
individual
only
small
changes,
both
increases
decreases
occurring.
Such
trends
remove
little
variance
behavior.
Seasonality
is
typically
weak
steady
systems,
most
variability
appears
be
stochastic.
Stormwater
differences
between
wet
dry
season
behavior,
appear
flow-driven.
Several
models
system
developed,
dynamic.
Ecological Indicators,
Год журнала:
2021,
Номер
130, С. 108082 - 108082
Опубликована: Авг. 14, 2021
The
over-proliferation
of
phytoplankton
has
been
a
public
concern
for
the
last
several
decades.
To
evaluate
importance
different
environmental
factors
on
biomass
variations
with
their
complex
response
relationships
in
large
eutrophic
Lake
Okeechobee,
nonlinear
methods
including
Generalized
Additive
Model
(GAM)
and
Random
Forest
(RF)
algorithm
were
employed.
A
long-term
monitoring
dataset
8
sampling
sites
ranging
from
January
1996
to
December
2010
was
applied
explore
driven
scales
Okeechobee.
Results
showed
spatially
heterogeneous
distribution
there,
western
southern
littoral
zones
occurred
heavier
algal
blooms
than
central
pelagic
zones.
Spearman's
correlation
results
denoted
Chlorophyll
(Chla)
negatively
correlated
phosphorus
scales.
In
aspect
temporal
variations,
appeared
three-peak-two-valley
variation
trend
which
peaked
1997,
2003,
2010,
respectively.
On
lake-wide
scale,
RF
model
indicated
that
inorganic
nutrients
primary
predictors
biomass,
while
underwater
light
availability
followed
play
essential
roles
prediction.
local
total
nitrogen
(TN)
top
predictor
near-shore
zone,
other
nitrate
nitrite
(NO23)
or
phosphate
(PO4).
GAM
suggested
had
positive
TN
increase
both
However,
its
water
temperature
(WT)
spatial
heterogeneity.
This
study
provided
new
perspective
scale
shallow
lake,
taking
heterogeneity
into
account
lake
quality
management
stressed.
Journal of Hydrology Regional Studies,
Год журнала:
2023,
Номер
47, С. 101441 - 101441
Опубликована: Июнь 1, 2023
Algal
blooms
(ABs),
often
exacerbated
by
excess
nutrients
from
anthropogenic
activities,
can
pose
serious
risks
to
public
health,
fisheries,
and
ecosystem
structure
functions.
Lake
Okeechobee
is
located
in
southcentral
Florida
(USA),
with
a
surface
area
of
1730
km2,
it
the
largest
subtropical
lake
United
States.
This
shallow,
nutrient-rich,
subject
frequent
intense
cyanobacteria,
some
which
are
toxic.
In
this
study,
three-dimensional
(3D)
model
was
developed,
coupling
long-term
monitoring
data
complex
physical,
chemical,
ecological
processes
at
fine
spatial
(15–1000
m
horizontal
mesh
size)
temporal
(1
h)
resolution.
We
used
understand
influence
environmental
factors
nutrient
management
on
ABs
dynamics
Okeechobee.
The
showed
that
mostly
developed
shallow
nearshore
regions
near
canal
outlets,
then
spread
over
as
result
prevailing
winds
currents.
Hypothetical
scenario
modeling
reducing
both
nitrogen
phosphorus
inputs
50%–75%
would
be
more
effective
than
targeting
single
nutrient.
could
tool
assess
effectiveness
different
strategies
its
watershed,
while
framework
adopted
other
large
water
bodies
facing
similar
issues.
