Saltmarshes
have
been
valued
for
their
multiple
ecosystem
services,
including
carbon
sequestration
and
long-term
storage.
However,
because
of
the
many
threats
faced,
rising
sea
levels,
limited
sediment
supplies
anthropogenic
impacts,
saltmarshes
require
careful
restoration
protection
management
to
continue
providing
services.
In
this
study,
we
examined
feasibility
land
abandonment,
based
on
differential
gains
in
between
natural
those
manged
agricultural
uses,
suggested
considerations
a
voluntary
market
plan.
The
study's
results
showed
that
proportion
Scottish
used
activities
was
not
very
large
(2.56%,
equivalent
179.73
ha).
average
net
benefit
(i.e.,
after
removing
opportunity
cost
land)
new
use
is
GBP
£
5,378.62/
ha
67-year
post-abandonment
program,
showing
model
economically
viable
implement
mechanism.
A
scheme
may
be
easier
than
compliance
scheme,
although
price
credits
under
high
fully
compensate
costs
all
regions.
effect,
at
break-even
point
(e.g.,
balances
regions
varied
widely
(range
1.06-59.83/ton
C),
which
means
with
higher
there
need
consider
compensating
farmers
through
blended
private-public
Despite
these
difficulties,
implementing
models
initiatives
can
society
broader
sense,
just
mitigate
climate
change.
Ecological Indicators,
Journal Year:
2024,
Volume and Issue:
159, P. 111659 - 111659
Published: Feb. 1, 2024
The
conversion
of
tidal
wetlands
to
open
water
has
become
a
major
concern
for
coastal
managers
worldwide.
Collecting
spatial
information
regarding
the
lost
resulting
from
open-water
and
degraded
that
are
exhibiting
significant
transition
towards
is
prerequisite
employing
conservation
restoration
efforts.
Previous
studies
have
focused
on
former
while
often
neglecting
latter.
This
will
hamper
make
comprehensive
decisions.
In
this
study,
along
mainland
coast
China
taken
as
case.
Using
linear
regression
model,
we
first
verify
time
series
percent
maps
can
capture
changes
in
inundation
at
local
scale,
then
employ
dataset
method
identify
portions
within
current
(2020)
toward
national
scale.
Furthermore,
optimize
1999
2019
based
global
intertidal
change
database.
results
suggest
total
5.3
×
104
ha
were
converted
into
between
2019,
with
over
57%
occurring
Jiangsu
Province
Shandong
Province.
Nearly
12%
China's
wetlands,
equivalent
10.1
ha,
undergoing
water.
area
proportion
these
provinces
north
Shanghai
generally
higher
than
south
Shanghai,
except
Hainan
four-quadrant
model
utilized
provide
recommendations
different
segments
wetlands.
datasets
methods
used
study
novel
insights
determining
Our
findings
potential
assist
optimizing
patterns
projects
China.
Marine Ecology Progress Series,
Journal Year:
2024,
Volume and Issue:
739, P. 49 - 64
Published: May 13, 2024
Salt
marsh
productivity
has
historically
been
viewed
as
being
driven
primarily
by
bottom-up
processes,
but
recent
studies
in
North
America,
Europe,
Asia
and
South
America
have
shown
that
top-down
forces
grazers
also
structure
vegetation.
This
generality
of
grazing
pressure
not
tested
to
date
African
salt
marshes.
Here,
we
investigated
whether
dominant
crabs
Africa’s
estuarine
marshes
consume
live
plants
interaction
direct
effects
on
the
foundational
species
Spartina
maritima
.
We
employed
natural
surveys,
lab
feeding
trials,
diet
analysis
field
experiments.
Although
found
no
significant
relationships
between
plant
gut
contents
stable
isotope
showed
S.
is
present
prominent
their
diet.
All
components
were
consumed.
Manipulation
crab
density
size
(crabs
>5
mm
excluded)
revealed
small
stem
aboveground
biomass
compared
controls.
Combined,
this
research
demonstrates
these
do
indeed
eat
cordgrass,
appear
be
dependent.
Top-down
impacts
detected
correlations,
probably
due
different
scales
at
which
data
collected
These
results
establish
globally
common.
Future
systems
should
manipulate
through
addition
experiments
or
predator
exclusions
understand
impact
high
densities
what
regulate
populations.
Remote Sensing,
Journal Year:
2023,
Volume and Issue:
15(18), P. 4475 - 4475
Published: Sept. 12, 2023
Salt
marshes
are
highly
important
wetlands;
however,
external
pressures
causing
their
widespread
deterioration
and
loss.
Continuous
monitoring
of
extent
is
paramount
for
the
preservation
recovery
deteriorated
threatened
salt
marshes.
In
general,
moderate-resolution
satellite
remote
sensing
data
allow
accurate
detection
marsh
shorelines;
in
narrow
fringing
remains
challenging.
This
study
aims
to
evaluate
ability
Landsat-5
(TM),
Landsat-7
(ETM+),
Sentinel-2
(MSI)
be
used
accurately
determine
shoreline
marshes,
focusing
on
three
regions
Aveiro
lagoon
Mira,
Ílhavo
S.
Jacinto
channels.
Shorelines
were
determined
considering
Normalized
Difference
Vegetation
Index
(NDVI),
accuracy
this
methodology
was
evaluated
against
reference
shorelines
by
computing
Root
Mean
Square
Error
(RMSE).
Once
validated,
method
historical
shorelines,
rates
change
between
1984
2022
quantified
analyzed
locations.
Results
evidence
that
30
m
resolution
Landsat
describe
(RMSE~15
m)
maintained
when
increasing
spatial
through
pan-sharpening
or
using
10
data.
These
also
show
channels
evolved
similarly,
with
stability
before
2000
followed
retreats
after
year.
At
end
four
decades
study,
an
average
retreat
66.23
±
1.03
46.62
0.83
found,
respectively.
contrast
these
expected
evolution,
Mira
Channel
showed
2000,
similar
progressions
year,
resulting
2.33
1.18
advance
until
2022.
The
single-site
travel
cost
model
is
a
method
typically
used
to
estimate
the
recreational
value
of
open-access
natural
areas.
However,
when
utilised
at
sites
where
multiple
ecosystem
types
are
present,
proportion
that
generated
by
each
can
be
unclear.
Natural
capital
frameworks,
such
as
UN's
System
Environmental-Economic
Accounting,
require
values
specific.
Therefore,
from
models
may
difficult
incorporate.
In
this
study,
we
use
protected
coastal
site
using
and
demonstrate
three
approaches
could
employed
assign
total
one
key
ecosystems
site,
saltmarsh.
welfare
for
entire
€4.1
million
per
year.
attributed
saltmarsh
ranges
€280,154
€1.7
million,
depending
on
approach
used.
We
discuss
relevance
these
different
contexts,
including
accounting.
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 10, 2024
Abstract
In
the
Seine
estuary
in
northern
France,
many
artificial
structures
limit
effect
of
tide
on
associated
alluvial
zones.
Consequently,
this
affects
natural
environmental
filtering
mechanisms
linked
to
tidal
regimes
and
water
salinity,
which
directly
influences
structure
organism
assemblies
adjacent
ecosystems.
Here,
we
propose
study
influence
these
filters'
modifications
spiders
plants,
two
compartments
recognized
as
complementary
terms
bioindication.
However,
complementarity
has
only
been
studied
a
limited
extent
rarely
estuarine
environments.
To
highlight
complementarity,
taxonomic
functional
patterns
obtained
across
different
topographical
levels
sites
with
contrasting
level
managements.
Moreover,
particular
attention
was
paid
weight
attributed
rare
species
(Q
order)
shed
light
processes
affecting
dominance
dynamics
between
taxa.
Overall,
spider
communities
appeared
less
influenced
by
than
plants
both
sites,
diversity
demonstrating
low
sensitivity
salinity.
Spider
community
also
demonstrated
compositional
shifts
mainly
driven
changes
abundance
dominance.
contrast,
plant
more
sensitive
constraints
management,
responses
composition
turnover
rather
unbalanced
abundance,
suggesting
at
distinct
spatial
scales
communities.
