Applied Sciences,
Год журнала:
2023,
Номер
13(13), С. 7962 - 7962
Опубликована: Июль 7, 2023
Mangroves
in
Zanzibar
have
a
high
value
for
biodiversity
and
scenic
beauty.
However,
mangroves
are
susceptible
to
anthropogenic
natural
environmental
disturbances.
Although
global
mangrove
monitoring
systems
exist,
it
is
the
practitioners
focused
on
small
areas
who
knowledgeable
about
area
which
they
work.
This
study
examined
change
cover
Chwaka
Bay
Menai
Bay,
between
1973
2020,
using
Landsat
satellite
data.
The
transformed
divergence
(TD)
index
Jeffries–Matusita
(J-M)
distance
were
used
calculate
separability
of
land
classes
before
classification.
overall
accuracies
ranged
82.5
92.7%
85.5
94.5%
Bay.
kappa
coefficients
(ĸ)
range
0.72–0.90,
while
producer’s
user’s
72
100%.
Bay’s
annual
decrease
2020
was
48.5
ha,
compared
Menai’s
6.8
ha.
loss
linked
illegal
timber/pole
cutting,
firewood
collection,
charcoal
burning,
unsustainable
aquaculture,
agricultural
urban
development.
Others
changes
conditions
that
suitable
climate
change.
crucial
providing
basis
ecological
restoration
management
Zanzibar’s
ecosystem.
While
much
attention
has
been
paid
to
the
climatic
controls
of
species'
range
limits,
other
factors
such
as
dispersal
limitation
are
also
important.
Temperature
is
an
important
control
distribution
coastal
mangrove
forests,
and
expansion
at
multiple
poleward
limits
linked
increasing
temperatures.
However,
abundances
have
surprisingly
insensitive
climate
change,
indicating
drivers
limitation.
For
example,
along
west
coast
North
America,
found
on
Baja
California
mainland
coasts
Mexico,
between
26°48ʹ
30°18ʹN.
Non‐climatic
may
play
role
in
setting
these
1)
abundance
limit
populations
relatively
variability
2)
introduced
population
mangroves
persisted
hundreds
kilometers
north
natural
limits.
We
combined
a
species
model
with
high‐resolution
oceanographic
transport
identify
roles
controlling
distributions.
identified
estuarine
habitat
that
likely
climatically
suitable
for
current
propagules
from
unlikely
reach
locations
due
prevailing
ocean
currents
geomorphic
create
patchy
large
between‐patch
distances.
Thus,
although
change
driving
shifts
regions
around
world,
currently
limiting
several
including
America.
IOP Conference Series Earth and Environmental Science,
Год журнала:
2024,
Номер
1410(1), С. 012053 - 012053
Опубликована: Ноя. 1, 2024
Abstract
Mangrove
forest
ecosystems
are
important
habitats
for
marine
organisms
and
have
great
economic
potential.
This
study
aimed
to
explain
the
role
of
mangrove
their
potential
using
descriptive
analysis.
Data
obtained
from
related
studies
then
described
further.
is
located
in
Majene
Regency,
West
Sulawesi
Province.
species
were
observed
situ
March
2023
identified
at
Water
Quality
Laboratory,
Faculty
Marine
Sciences
Fisheries,
Hasanuddin
University.
The
results
showed
that
there
14
types
eight
families.
highest
density
vegetation
was
Rhizophora
stylosa
with
a
stand
2169
trees/ha
smallest
Scaevola
taccada
40
trees/ha.
determined
directly
by
utilizing
mangroves
as
food
boards,
while
indirect
value
assessing
function
ecosystem
environment,
supporting
existence
mangroves.
total
IDR
100,489,205,186.-
hope
course,
optimize
carrying
capacity
its
sustainable
use,
challenge
form
efforts
restore
damaged
Recently,
extent
forests
this
area
has
been
decreasing
because
conversion
into
human
settlements,
fish
ponds
uncontrolled
exploitation.
Majene.
PLoS ONE,
Год журнала:
2024,
Номер
19(12), С. e0315181 - e0315181
Опубликована: Дек. 5, 2024
Mangrove
forests
are
commonly
mapped
using
spaceborne
remote
sensing
data
due
to
the
challenges
of
field
endeavors
in
such
harsh
environments.
However,
these
methods
usually
require
a
substantial
level
manual
processing
for
each
image.
Hence,
conservation
practitioners
prioritize
cloud
computing
platforms
obtain
accurate
canopy
classifications
large
extensions
mangrove
forests.
The
objective
this
study
was
analyze
spatial
distribution
and
rate
change
(area
gain
loss)
red
(
Rhizophora
mangle
)
other
dominant
species,
mainly
Avicennia
germinans
Laguncularia
racemosa
,
between
2015
2020
throughout
northwestern
coast
Mexico.
Bimonthly
Combined
Recognition
Index
(CMRI)
from
all
available
Sentinel-2
were
processed
with
Google
Earth
Engine
platform.
results
indicated
an
extension
42865
ha
139602
species
Gulf
California
Pacific
Mexico
2020.
experienced
notable
decline
1817
2020,
largely
attributed
expansion
aquaculture
ponds
destructive
effects
hurricanes.
Considering
two
classes,
overall
classification
accuracies
90%
92%
maps,
respectively.
advantages
method
compared
supervised
traditional
vegetation
indices
discussed,
as
disadvantages
concerning
resolution
minimum
detection
area.
work
is
national
effort
assist
decision-making
resource
allocations
blue
carbon,
rehabilitation,
climate
mitigation
programs.
Sociedade & natureza,
Год журнала:
2023,
Номер
35(1)
Опубликована: Апрель 25, 2023
O
manguezal
é
um
ecossistema
de
transição
entre
os
ambientes
terrestre
e
marinho
representa
importante
indicador
ecológico
pelos
serviços
ecossistêmicos
fornecidos.
No
entanto,
apesar
da
relevância
ecológica,
ainda
sofre
pressões
antrópicas
vem
perdendo
em
extensão
qualidade
ambiental.
Brasil
e,
especificamente,
no
município
Paranaguá,
uma
mescla
uso
antrópico
tem
causado
significativas
sobre
manguezais.
Neste
sentido,
o
objetivo
deste
estudo
avaliar
grau
antropização
dos
manguezais
urbanos
do
Paranaguá
(PR),
através
utilização
imagens
altíssima
resolução
espacial,
obtidas
Aeronave
Remotamente
Pilotada
a
fim
subsidiar
políticas
municipais
ordenamento
territorial.
Do
ponto
vista
metodológico,
partir
campanhas
campo,
foram
produzidos
mapas
com
auxílio
software
QGIS
3.10,
fotointerpretação
ortomosaicos
.
A
legenda
das
classes
abrangeu:
deposição
lixo
domiciliar
(i),
entulhos
(ii),
lançamento
efluentes
domésticos
sem
tratamento
(iii)
manilhas
(iv).
Os
resultados
apontaram
total
475
pontos
pressão
antrópica
as
22
manchas
analisadas.
classe
maior
destaque
foi
domiciliar,
seguida
respectivamente
tratamento,
(material
construção)
por
fim,
manilha.
Como
conclusão,
alta
mostrou
ser
ferramenta
eficaz
na
análise
urbanos,
destacando
assim
,
áreas
contribuindo
para
monitoramento
contínuo.
produtos
desta
pesquisa
podem
auxiliar
elaboração
instrumentos
territorial
município,
necessidade
construção
olhar
holístico
prol
conservação
Applied Sciences,
Год журнала:
2023,
Номер
13(13), С. 7962 - 7962
Опубликована: Июль 7, 2023
Mangroves
in
Zanzibar
have
a
high
value
for
biodiversity
and
scenic
beauty.
However,
mangroves
are
susceptible
to
anthropogenic
natural
environmental
disturbances.
Although
global
mangrove
monitoring
systems
exist,
it
is
the
practitioners
focused
on
small
areas
who
knowledgeable
about
area
which
they
work.
This
study
examined
change
cover
Chwaka
Bay
Menai
Bay,
between
1973
2020,
using
Landsat
satellite
data.
The
transformed
divergence
(TD)
index
Jeffries–Matusita
(J-M)
distance
were
used
calculate
separability
of
land
classes
before
classification.
overall
accuracies
ranged
82.5
92.7%
85.5
94.5%
Bay.
kappa
coefficients
(ĸ)
range
0.72–0.90,
while
producer’s
user’s
72
100%.
Bay’s
annual
decrease
2020
was
48.5
ha,
compared
Menai’s
6.8
ha.
loss
linked
illegal
timber/pole
cutting,
firewood
collection,
charcoal
burning,
unsustainable
aquaculture,
agricultural
urban
development.
Others
changes
conditions
that
suitable
climate
change.
crucial
providing
basis
ecological
restoration
management
Zanzibar’s
ecosystem.
