Biodiversity and Conservation,
Journal Year:
2022,
Volume and Issue:
31(3), P. 989 - 1021
Published: March 1, 2022
Abstract
Invasive
predators,
land
clearing
and
altered
fire
regimes
have
been
implicated
in
species
decline
extinction
worldwide.
Enhanced
knowledge
of
how
these
factors
interact
influence
medium-sized
mammals
is
warranted.
We
tested
three
hypotheses
using
occupancy
data
for
a
diverse
mammal
assemblage
including
threatened
species,
five
common
two
introduced
mesopredators
an
apex
predator
eastern
Australia.
hypothesised
that
within
the
would
be
influenced
by
(i)
physical
environment
(rainfall,
vegetation
type
elevation),
(ii)
habitat
disturbance
(number
fires
fragmentation)
(iii)
mesopredator
release,
whereby
and/or
detection
are
mesopredators,
feral
cat
(
Felis
catus
)
red
fox
Vulpes
vulpes
),
which
predator,
dingo
Canis
familiaris
).
utilised
camera-trapping
from
173
sites
(692
camera
locations)
across
north–south
gradient
spanning
~
1500
km
Although
i
(physical
environment)
ii
(habitat
disturbance)
not
mutually
exclusive,
we
show
variables
considered
each
were
only
weakly
correlated.
conducted
modelling
to
investigate
hypotheses.
co-occurrence
interactions
between
species.
The
hypothesis
best
supported
models
six
species:
red-necked
pademelon
Thylogale
thetis
bandicoots
Isoodon
macrourus
Perameles
nasuta
swamp
wallaby
Wallabia
bicolor
Macropus
rufogriseus
grey
kangaroo
giganteus
cat.
four
long-nosed
potoroo
Potorous
tridactylus
both
mesopredators.
Support
release
was
equivocal.
Large
macropods
showed
site
avoidance
towards
fox.
Four
higher
at
where
detected.
negative
interaction
did
not.
Our
study
highlights
such
as
rainfall,
clearing,
elevation
number
macroecological
scale.
findings
implications
conservation
managed
landscapes
suggestions
further
research
following
recent
2019–2020
wildfires.
Animals,
Journal Year:
2021,
Volume and Issue:
11(2), P. 253 - 253
Published: Jan. 20, 2021
Outdoor
access
for
owned
domestic
cats
(Felis
catus)
is
a
divisive
issue.
Cat
safety,
mental
and
physical
wellbeing,
infectious
diseases,
wildlife
depredation
are
cited
as
factors
influencing
owners;
however,
the
degree
of
consideration
each
factor
receives
has
not
been
quantified.
This
study
(i)
analysed
which
demographic
variables
associated
with
greater
odds
having
indoor
or
outdoor
lifestyles,
(ii)
identified
owners
consider
when
making
choice
on
lifestyle
any
regional
variations,
(iii)
if
different
options
available
recognise
their
benefits.
A
series
online
surveys
were
used
data
collection.
Binary
logistic
regression
models
to
generate
ratios
assessing
significantly
cat
lifestyle.
Quantitative
analysis
considered
deciding
was
accompanied
by
thematic
rich-text
open-ended
responses,
providing
nuanced
insight
into
rationale
elucidating
additional
considered.
Of
tested,
10/12
Variables
higher
indoor-only
lifestyles
being
26–35
years
old,
multi-cat
households,
junior
cats,
pedigree
unknown
status,
health
issues,
living
in
city
centres
urban
areas,
United
States,
Canada,
Australia,
New
Zealand.
indoor-outdoor
46–55
old
56+
households
residents
17
under,
male
mature
senior.
Road
traffic
concerns
most
reason
keeping
across
all
global
regions.
The
second-most
varied
regionally.
For
Europe,
it
protection
from
people.
USA
wildlife,
Australia
Zealand,
prevent
hunting.
Indoor-outdoor
frequently
benefits
cat’s
health.
Over
two-thirds
did
alternative
cat.
These
give
priorities
regards
feline
depredation,
helpful
individuals
organisations
working
human
behaviour
change.
They
provide
evidence
that
numbers
likely
rise
increasing
urbanisation.
Finally,
identify
populations
who
may
be
at
risk
compromised
welfare
due
unsuitable,
under-researched,
lifestyles.
Current Biology,
Journal Year:
2021,
Volume and Issue:
31(5), P. 1107 - 1111.e5
Published: Feb. 11, 2021
Predation
by
domestic
cats
Felis
catus
can
be
a
threat
to
biodiversity
conservation,1-3
but
its
mitigation
is
controversial.4
Confinement
and
collar-mounted
devices
impede
cat
hunting
success
reduce
numbers
of
animals
killed,5
some
owners
do
not
wish
inhibit
what
they
see
as
natural
behavior,
perceive
safety
risks
associated
with
collars,
or
are
concerned
about
device
loss
ineffectiveness.6,7
In
controlled
replicated
trial,
we
tested
novel,
non-invasive
interventions
that
aim
make
positive
contributions
husbandry,
alongside
existing
hunting.
Households
where
high
meat
protein,
grain-free
food
was
provided,
households
5-10
min
daily
object
play
introduced,
recorded
decreases
36%
25%,
respectively,
in
captured
brought
home
cats,
relative
controls
the
pre-treatment
period.
Introduction
puzzle
feeders
increased
33%.
Fitting
Birdsbesafe
collar
covers
reduced
birds
42%
had
no
discernible
effect
on
mammals.
Cat
bells
effect.
Reductions
predation
made
non-invasive,
nutrition
behavior
their
tendency
hunt,
rather
than
These
measures
likely
find
support
among
who
welfare
implications
other
interventions.
Wildlife Research,
Journal Year:
2020,
Volume and Issue:
47(8), P. 523 - 523
Published: Jan. 1, 2020
Research
and
management
attention
on
the
impacts
of
introduced
domestic
cat
(Felis
catus)
Australian
fauna
have
focussed
mainly
feral
population.
Here,
we
summarise
evidence
for
predation
by
pet
cats
wildlife.
We
collate
examples
local
wildlife
population
decline
extirpation
as
a
result,
at
least
in
part,
cats.
assemble
information
across
66
studies
worldwide
(including
24
studies)
to
estimate
toll
Australia,
plus
pressure
per
unit
area
residential
areas.
compared
these
estimates
those
published
Australia.
The
capita
kill
rate
is
25%
that
However,
live
much
higher
densities,
so
pets
square
kilometre
areas
28–52
times
larger
than
rates
natural
environments,
1.3–2.3
greater
km2
living
urban
Pet
species
more
often
do
but,
nonetheless,
native
animals
killed
still
There
no
exert
significant
control
species.
high
areas,
documented
declines
extirpations
populations
caused
cats,
potential
pathways
other,
indirect
effects
(e.g.
from
disease,
landscapes
fear,
ecological
footprints),
context
extraordinary
fauna,
together
support
default
position
are
serious
should
be
reduced.
From
technical
perspective,
can
reduced
effectively
humanely
while
also
enhancing
welfare.
review
options
reducing
discuss
opportunities
challenges
improved
Mammal Review,
Journal Year:
2019,
Volume and Issue:
49(4), P. 354 - 368
Published: Aug. 19, 2019
Abstract
Mammals
comprise
the
bulk
of
diet
free‐ranging
domestic
cats
Felis
catus
(defined
as
including
outdoor
pet
cats,
strays,
and
feral
cats)
in
most
parts
their
global
range.
In
Australia,
predation
by
introduced
has
been
implicated
extinction
many
mammal
species,
ongoing
decline
extant
species.
Here,
we
collate
a
wide
range
records
(including
on
Australian
mammals
model
traits
extant,
terrestrial,
native
species
associated
with
relative
likelihood
cat
predation.
We
explicitly
seek
to
overcome
biases
such
continental‐scale
compilation
excluding
possible
carrion
for
larger
accounting
differences
distribution
abundance
potential
prey
well
study
effort,
throughout
each
species’
For
non‐volant
was
greatest
an
intermediate
weight
(peaking
at
ca.
400
g),
lower
rainfall
areas
not
dwelling
rocky
habitats.
Previous
studies
have
shown
rates
be
these
traits.
As
such,
provide
first
link
between
through
quantitative
analysis.
Our
(151
or
52%
complement)
is
substantially
greater
than
previously
reported
(88
species)
includes
50
listed
threatened
IUCN
under
legislation
(57%
Australia's
87
terrestrial
species).
identify
likely
(mulgaras
Dasycercus
spp.,
kowari
Dasyuroides
byrnei
,
smaller
dasyurids
medium‐sized
large
rodents,
among
others)
hence
benefit
from
enhanced
mitigation
impacts,
translocations
predator‐free
islands,
establishment
predator‐proof
fenced
exclosures,
broad‐scale
poison
baiting.
Global Ecology and Conservation,
Journal Year:
2020,
Volume and Issue:
23, P. e01198 - e01198
Published: July 20, 2020
Domestic
cats
(Felis
catus)
have
contributed
to
the
extinction
of
indigenous
species
worldwide,
but
impacts
in
Africa
are
unstudied.
We
compare
prey
returned
home
from
three
questionnaire
surveys
(2009,
2010
and
2013/14)
Cape
Town,
South
Africa,
with
footage
some
same
wearing
animal-borne
video
cameras
(KittyCams),
assess
differences
actual
predation
vs.
returns.
Town
borders
Table
Mountain
National
Park
(TMNP),
so
may
on
animals
a
protected
area.
Urban
edge
(UE)
deep
urban
(DU)
did
not
differ
rates,
suite
killed
differed
significantly.
KittyCams
revealed
that
most
was
nocturnal,
only
18%
recorded
were
home,
thus
kill
5.56
times
more
(averaged
across
all
taxa)
than
returns
data
suggest.
Reptiles
constituted
50%
prey,
17%
returns;
mammals
24%
54%
Non-native
represented
6%
by
UE
DU
cats,
respectively,
pointing
high
cost
cat
for
native
fauna.
Applying
correction
factor
5.56,
average
domestic
kills
c.
90
(95%
CI
=
59,
123),
animals.year−1.
Thus,
approximately
300
000
27.5
million
animals.year−1,
TMNP
is
likely
lose
203
500
annually
within
its
boundaries.
The
scale
this
necessitates
conservation
options
minimise
wildlife,
particularly
near
areas.
Diversity and Distributions,
Journal Year:
2022,
Volume and Issue:
28(5), P. 976 - 991
Published: March 15, 2022
Abstract
Aim
Introduced
predators
negatively
impact
biodiversity
globally,
with
insular
fauna
often
most
severely
affected.
Here,
we
assess
spatial
variation
in
the
number
of
terrestrial
vertebrates
(excluding
amphibians)
killed
by
two
mammalian
mesopredators
introduced
to
Australia,
red
fox
(
Vulpes
vulpes
)
and
feral
cat
Felis
catus
).
We
aim
identify
prey
groups
that
suffer
especially
high
rates
predation,
regions
where
losses
foxes
and/or
cats
are
substantial.
Location
Australia.
Methods
draw
information
on
tallies
reptiles,
birds
mammals
Australia
from
published
studies.
derive
for
predation
(i)
modelling
continental‐scale
density,
(ii)
frequency
occurrence
diet,
(iii)
analysing
individuals
within
dietary
samples
(iv)
discounting
animals
taken
as
carrion.
point
estimates
numbers
annually
map
these
tallies.
Results
Foxes
kill
more
(peaking
at
1071
km
−2
year
−1
than
(55
across
unmodified
temperate
forested
areas
mainland
reflecting
generally
higher
density
environments.
However,
continent
–
mainly
arid
central
tropical
northern
(and
Australian
islands)
foxes.
estimate
together
697
million
reptiles
510
1435
mammals.
Main
conclusions
This
analysis
demonstrates
species
takes
a
substantial
ongoing
toll
Continuing
population
declines
potential
extinctions
some
threatens
further
compound
Australia's
poor
contemporary
conservation
record.
Global Ecology and Biogeography,
Journal Year:
2022,
Volume and Issue:
31(10), P. 2070 - 2084
Published: April 11, 2022
Abstract
Aim
Megafire
events
generate
immediate
concern
for
wildlife
and
human
well‐being,
but
their
broader
ecological
impacts
likely
extend
beyond
individual
species
single
fire
events.
In
the
first
mechanistic
study
of
effects
focussed
on
ecosystems,
we
aimed
to
assess
sensitivity
exposure
ecosystems
multiple
fire‐related
threats,
placing
in
context
changing
regimes
interactions
with
other
threats.
Location
Southern
eastern
Australia.
Time
period
2019–2020.
Major
studied
Australian
ecosystems.
Methods
We
defined
15
threats
based
mechanisms
associated
with:
(a)
direct
regime
components;
(b)
between
physical
environmental
processes;
(c)
biological
interactions;
(d)
activity.
estimated
a
sample
92
ecosystem
types
each
threat
type
published
relationships
spatial
analysis
2019–2020
fires.
Results
Twenty‐nine
assessed
had
more
than
half
distribution
exposed
one
or
types,
only
three
those
were
listed
as
nationally
threatened.
Three
posed
most
severe
large
numbers
types:
high
frequency
fire;
pre‐fire
drought;
post‐fire
invasive
predator
The
affected
ranged
from
rain
forests
peatlands,
included
some,
such
sclerophyllous
eucalypt
heathlands,
that
are
traditionally
regarded
fire‐prone
fire‐adapted.
Main
conclusions
Most
fires
became
apparent
when
they
placed
whole
its
threatening
processes,
not
consequences
megafire
event
itself.
Our
approach
enables
ecosystem‐specific
management
responses
threatened
be
targeted
at
underlying
causes
degradation
decline.
Biological Conservation,
Journal Year:
2023,
Volume and Issue:
281, P. 110000 - 110000
Published: March 13, 2023
Populations
of
threatened
animals
are
increasingly
preserved
within
predator-free
havens,
where
populations
tend
to
grow
rapidly,
resource
competition
increases,
and
traits
relevant
avoiding
predation
may
be
selected
against.
We
examine
this
phenomenon
using
a
ten-year
longitudinal
dataset
on
Australian
mammal;
the
woylie
(Bettongia
penicillata
ogilbyi).
Behavioural
morphological
data
were
collected
during
routine
monitoring
havened
population
an
adjacent
wild
predators
occur,
from
which
six
relating
predator
escape
extracted.
Paired
comparisons
revealed
that
woylies
less
likely
show
injuries
excessive
agitation
in
traps,
eject
pouch
young,
had
shorter
approach
distances
compared
outside
haven,
suggesting
dampened
antipredator
response.
Further,
body
mass
relative
leg
length
declined
over
time
population,
with
no
change
selection
haven
against
size.
Population
density
affected
size
traps
differently
non-havened
populations,
indicating
interaction
between
relaxed
hastens
loss
anti-predator
traits.
Our
study
offers
mechanistic
understanding
responses
is
essential
for
guiding
how
could
managed
better
realise
their
potential
recovering
fauna.
Diversity and Distributions,
Journal Year:
2020,
Volume and Issue:
27(5), P. 828 - 843
Published: Nov. 11, 2020
Abstract
Aim
Fire
is
particularly
frequent,
complex
and
contentious
in
the
vast
tropical
savannas
of
northern
Australia,
where
declines
many
threatened
species
are
associated
with
fire,
substantial
areas
under
fire
management
for
greenhouse
gas
abatement.
Controlled
field
experiments
crucial
understanding
biodiversity
responses,
here
I
present
key
insights
into
faunal
responses
to
that
have
been
revealed
by
them,
along
their
lessons
management.
Location
Australian
monsoonal
tropics.
Methods
Results
synthesized
from
six
replicated
conducted
include
multispecies
assessments
fauna.
The
synthesis
also
draws
on
other
studies
presented
form
five
responses.
as
follows:
(a)
most
groups
extremely
resilient
highly
contrasting
regimes
often
having
little
or
no
detectable
impact
abundances,
at
least
medium
term;
(b)
important
effects
typically
indirect
through
habitat
modification,
even
when
there
direct
mortality;
(c)
intensity
not
a
factor
widely
thought;
rather,
frequency
important;
(d)
will
always
be
winners
losers
any
fire;
(e)
required
maintenance
diversity.
Main
conclusions
These
implications
conservation
savannas:
needs
focus
fire‐induced
changes
suitability,
consider
outcomes
landscape
scale;
combination
frequently
(every
2–3
years)
less
≥5
burned
may
adequately
conserve
great
majority
animal
without
need
mosaics;
special
attention
frequent‐fire
because
an
low
representation
longer‐unburnt
habitat;
actively
managed
promote
diversity,
excluded.
applicable
grassy
ecosystems
more
generally,
some
appear
universal
fire‐prone
biomes.
Wildlife Research,
Journal Year:
2020,
Volume and Issue:
47(8), P. 731 - 731
Published: Jan. 1, 2020
Abstract
ContextCats
are
the
definitive
or
primary
host
for
pathogens
that
cause
diseases
in
people
and
livestock.
These
cat-dependent
would
not
occur
Australia
if
cats
had
been
introduced,
their
ongoing
persistence
depends
on
contacts
with
cats.
Toxoplasma
gondii
is
a
protozoan
parasite
cycles
between
any
other
warm-blooded
animals.
People
infected
by
T.
may
appear
asymptomatic,
have
mild
illness,
experience
severe,
potentially
lethal
symptoms;
also
affect
behaviour
mental
health.
major
contributor
to
spontaneous
abortion
sheep
goats.
Two
species
of
Sarcocystis,
another
genus
parasite,
cycle
through
sheep,
causing
macroscopic
cysts
form
tissues
reduce
meat
saleability.
Toxocara
cati,
cat
roundworm,
causes
minor
illnesses
humans
livestock,
bacterium
Bartonella
henselae
scratch
disease,
an
infection
can
be
contracted
when
scratched
bitten
carrying
pathogen.
AimsWe
estimated
economic
costs
Australia.
MethodsWe
collated
national
global
data
rates,
health
production
consequences.
Key
resultsWe
two
(toxoplasmosis,
disease)
at
AU$6.06
billion
(plausible
range
AU$2.11–10.7
billion)
annually,
livestock
from
toxoplasmosis
sarcocystosis
AU$11.7
million
AU$7.67–18.3
million).
Most
human
due
associations
higher
rates
traffic
accidents
illness
people.
The
causality
behind
these
remains
uncertain,
so
those
overestimated.
Conversely,
our
estimates
incomplete,
infections
under-reported
misdiagnosed,
understanding
disease
outcomes
still
imperfect,
all
which
make
underestimated.
ConclusionsOur
analysis
suggests
substantial
benefits
public
could
realised
reducing
exposure
breaking
transmission
cycles.
ImplicationsReducing
feral
populations
farming
urban
areas,
pet
population
increasing
containment
help
burden