Anthropogenic and environmental factors determine occupancy and rarity of large carnivores in the Omo Valley, southwest Ethiopia
Ecological Solutions and Evidence,
Год журнала:
2025,
Номер
6(2)
Опубликована: Апрель 1, 2025
Abstract
Large
carnivores
in
Ethiopia
are
declining
numbers
and
range
due
to
human
population
pressure,
habitat
fragmentation
loss,
compounded
by
low
political
interest
for
conservation.
To
conserve
large
carnivores,
it
is
important
study
the
impact
of
these
factors
on
their
occupancy.
For
this
purpose,
un‐baited
camera
traps
were
deployed
Chebera
Churchura,
Maze
Omo
National
Parks
Tama
Community
Conservation
Area
using
a
25
km
2
grid
2‐month
periods
each
Protected
from
2020
2022.
We
tested
effects
environmental
anthropogenic
covariates
carnivore
occupancy
while
accounting
imperfect
detection
multispecies
model.
recorded
all
six
Valley.
However,
number
level
vary
across
sites;
Park
only
where
species
recorded.
had
highest
lion
detections
lowest
leopard
spotted
hyaena
detections,
but
its
small
size
led
inconclusive
results
any
further
analysis.
Due
densities,
insufficient
analyse
lion,
cheetah,
striped
African
wild
dog
Churchura
Tama.
The
mean
marginal
probability
was
Omo,
reverse
hyaena.
determined
prey
elevation
Parks.
Furthermore,
both
visit
areas
with
settlement
Practical
implication
:
explore
strategies
improve
conservation
area.
highlight
limitations
trapping
importance
conserving
larger
landscape
Язык: Английский
Mammalian Community Structure Varies With Distance Between Protected Areas in the Omo Valley, Southwest Ethiopia
Ecology and Evolution,
Год журнала:
2025,
Номер
15(4)
Опубликована: Апрель 1, 2025
ABSTRACT
Rapid
human
population
growth
in
Ethiopia
has
resulted
the
degradation
of
vast
areas
wildlife
habitats
due
to
agricultural
expansion,
infrastructure
development,
and
urbanization.
The
Omo
Valley
southwestern
part
been
particularly
affected
by
land
use
changes,
but
despite
its
ecological
importance,
few
relevant
studies
have
conducted
there
last
two
decades.
Our
aim
is
provide
updated
scientifically
verifiable
information
for
medium
large
terrestrial
mammal
species
richness
community
structure
four
Protected
Areas
Valley.
We
used
bycatch
camera
trap
data
from
a
carnivore
survey
nonparametric
incidence‐based
estimators
analysis.
A
total
52
mammals
nine
orders
eighteen
families
were
recorded,
which
approximately
29.4%
are
listed
as
globally
threatened
one
an
endemic
subspecies.
present
current
lists
compare
them
with
historical
records
observed
highest
number
National
Park,
even
though
no
longer
recorded
there.
applied
Morisita‐Horn
similarity
index
reveal
high
degree
overlap
mammalian
among
adjacent
Areas,
less
between
far
each
other,
indicating
distance
decay
similarity.
distribution
feeding
guilds
was
significantly
different
across
detection
frequency
relatively
low
Tama
Community
Conservation
Area
compared
our
other
study
sites.
This
confirmed
conservation
importance
area
terms
diversity,
albeit
levels,
especially
carnivores,
underscoring
promoting
landscape
connectivity
maintain
viability
From
experience,
proved
be
effective
surveying
large‐
medium‐sized
species,
so
capturing
rarer
area.
Язык: Английский
Spotted! Remote camera traps used in a novel design reveal a perilous situation for the Critically Endangered Northwest African cheetah (Acinonyx jubatus hecki) in a conflict‐affected protected area in Benin
Ecological Solutions and Evidence,
Год журнала:
2025,
Номер
6(2)
Опубликована: Апрель 1, 2025
Abstract
Large
mammals
play
critical
roles
in
ecosystems,
yet
60%
are
threatened
with
extinction
and
populations
continue
to
decrease.
Declines
particularly
precipitous
conflict‐affected
areas,
disrupting
ecosystems
reducing
chances
of
post‐conflict
recovery.
carnivores
disproportionately
impacted
by
armed
conflict,
information
on
population
status
is
lacking
areas
affected
insecurity
because
the
intense
survey
effort
required
poses
risks
human
safety.
The
globally
important
W‐Arly‐Pendjari
(WAP)
ecosystem
increasingly
conflict
supports
one
four
known
remaining
Critically
Endangered,
poorly
documented,
Northwest
African
cheetah
(
Acinonyx
jubatus
hecki
).
We
used
camera
traps
a
novel
dual
placement
design
over
three
biennial
surveys
generate
reliable
repeatable
estimates
for
Pendjari
National
Park
its
surrounding
hunting
zones.
Our
ensured
detection
sufficient
individuals
recaptures
allow
density
estimation
could
be
adapted
other
rare,
low‐density
species.
two
best
multi‐session
hybrid
mixture
spatially‐explicit
capture
recapture
(SECR)
models
estimated
0.26
±
0.10
SE
individual/100
km
2
across
4839
area,
or
0.51
0.16
zero
adjacent
sex
ratio
was
female‐biased,
females
moved
more
than
twice
area
males,
agreement
studies
elsewhere.
Cheetahs
showed
strong
crepuscular
activity
patterns,
but
males
were
also
active
before
sunrise
after
sunset.
Practical
implication
:
results
indicate
that
likely
core
this
may
an
source
WAP
Complex;
however,
worryingly
small.
Violent
extremism
widespread
distribution
A.
j.
hence,
we
recommend
our
approach,
which
minimises
on‐the‐ground
fieldwork,
provide
vital
data
prioritise
assess
conservation
interventions.
targeted
protection
financial
support
bolster
key
their
prey.
highlight
urgent
need
effective
coordinated
action
prevent
loss
iconic
subspecies.
Язык: Английский