Hormones and Behavior,
Journal Year:
2025,
Volume and Issue:
170, P. 105724 - 105724
Published: March 18, 2025
Urban
wildlife
must
cope
with
diverse
challenges
and
stressors,
including
human
presence.
However,
in
addition
to
being
a
disturbance,
humans
can
provide
energy-rich
food
protection
from
predators.
We
evaluated
the
impact
of
presence
on
red-winged
starlings
(Onychognathus
morio)
highly
urbanised
environment
using
faecal
glucocorticoid
metabolite
(fGCM)
concentrations
as
stress-related
biomarker.
performed
an
adrenocorticotropic
hormone
(ACTH)
challenge
validate
non-invasive
method
for
quantifying
glucocorticoids
starlings.
Using
this
method,
we
quantified
fGCMs
excreta
collected
free-living
during
weekdays
(high
presence)
weekends
(low
determine
birds'
responses
fluctuating
numbers.
Following
ACTH
challenge,
starlings'
circulating
(GC)
increased
by
127
%
within
30
min
corresponding
fGCM
1
h
injection.
Of
four
enzyme
immunoassays
(EIA)
tested,
11-oxoaetiocholanolone
EIA,
best,
detecting
310
increase
post-ACTH
suggested
1-h
lag
between
injection
peak
excretion
species.
Human
foot-traffic
was
significantly
higher
compared
weekends,
yet
showed
overall
30.4
lower
weekends.
Red-winged
consume
proportion
anthropogenic
than
cannot
rule
out
possibility
that
diet-related
alteration
gut
passage
time
affect
concentrations.
correlation
foot
traffic
may
also
suggest
urban
benefit
Our
results
raise
that,
under
certain
conditions,
benefits
associated
outweigh
potential
negative
effects
activity,
at
least
non-breeding
season.
Ecological Entomology,
Journal Year:
2021,
Volume and Issue:
46(4), P. 757 - 771
Published: April 30, 2021
1.
Urbanisation
is
one
of
the
main
land‐use
changes
behind
global
insect
collapse.
Despite
that
previous
studies
have
described
negative
effects
urbanisation
on
communities,
so
far
there
no
synthesis
considers
multiple
urban
drivers,
their
combined
effects,
and
role
species
traits
altogether.
2.
Here
we
developed
an
integrative
framework
underlying
mechanisms
terrestrial
loss
in
cities
by
exploring
five
leading
drivers:
impervious
surfaces,
habitat
fragmentation,
heat
island,
pollution,
exotic
plants.
For
each
driver,
identified
direct
indirect
(mediated
through
interactions
or
resources)
populations
emphasising
as
moderators
such
effects.
3.
Body
size,
mobility,
oviposition/nesting
requirements
were
frequently
defined
vulnerability
to
drivers.
Urban
island
pollution
deserve
further
research
from
a
community‐level
approach.
Direct
drivers
dominated
literature,
while
most
paths
mediated
resources
rather
than
interactions.
4.
In
conclusion,
our
review
showed
challenges
recognising
particular
for
driver
By
doing
so,
intended
encourage
researchers
address
some
gaps
noticed
order
fully
understand
how
affecting
communities.
Finally,
outlined
recent
planning
strategies
future
successfully
conserve
biodiversity.
Land,
Journal Year:
2021,
Volume and Issue:
10(2), P. 92 - 92
Published: Jan. 20, 2021
Urbanization
poses
a
major
threat
to
biodiversity
worldwide.
We
focused
on
birds
as
well-studied
taxon
of
interest,
in
order
review
literature
traits
that
influence
responses
urbanization.
226
papers
were
published
between
1979
and
2020,
aggregate
information
five
groups
have
been
widely
studied:
ecological
traits,
life
history,
physiology,
behavior
genetic
traits.
Some
robust
findings
trait
changes
individual
species
well
bird
communities
emerge.
A
lack
specific
food
shelter
resources
has
led
the
urban
community
being
dominated
by
generalist
species,
while
specialist
show
decline.
Urbanized
differ
behavioral
showing
an
increase
song
frequency
amplitude,
bolder
behavior,
compared
rural
populations
same
species.
Differential
predatory
pressure
results
history
including
prolonged
breeding
duration,
increases
clutch
brood
size
compensate
for
lower
survival.
Other
species-specific
include
hormonal
state,
body
differences
from
populations.
identify
gaps
research,
with
paucity
studies
tropical
cities
need
greater
examination
persistence
success
native
vs.
introduced
Frontiers in Ecology and Evolution,
Journal Year:
2024,
Volume and Issue:
12
Published: March 14, 2024
The
significance
of
urban
landscapes
in
safeguarding
biodiversity
is
often
disregarded,
even
though
a
considerable
amount
conservation
focus
directed
toward
hotspots
where
land
conversion
happening
at
the
fastest
pace.
Maintaining
areas
not
only
benefits
environment,
but
along
with
social,
economic,
and
technological
factors
can
increase
stability
systems
to
disturbance,
concept
known
as
“urban
resilience”.
In
this
synthesis
paper,
we
explore
ecological
dimension
resilience
specifically
on
avian
because
birds
are
easy
observe,
relatively
abundant,
serve
an
indicator
overall
health
environments.
We
first
examine
discuss
role
environmental
stressors
associated
urbanization
ongoing
crisis.
then
provide
overview
characteristics
environment
that
may
promote
birds,
associations
between
social
economic
resilience.
Finally,
recommendations
future
research
regarding
strategies
improve
thus,
whole,
intersections
ecology,
ecosystem
justice,
planning.
Since
68%
world’s
population
projected
live
by
2050,
it
imperative
scientists,
planners,
civil
engineers,
architects,
others
consider
both
cities
natural
anthropogenic
stressors.
PLoS Biology,
Journal Year:
2020,
Volume and Issue:
18(9), P. e3000818 - e3000818
Published: Sept. 22, 2020
Humans
profoundly
impact
landscapes,
ecosystems,
and
animal
behavior.
In
many
cases,
animals
living
near
humans
become
tolerant
of
them
reduce
antipredator
responses.
Yet,
we
still
lack
an
understanding
the
underlying
evolutionary
dynamics
behind
these
shifts
in
traits
that
affect
survival.
Here,
used
a
phylogenetic
meta-analysis
to
determine
how
mean
variability
responses
change
as
function
number
generations
spent
contact
with
under
3
different
contexts:
urbanization,
captivity,
domestication.
We
found
any
leads
rapid
reduction
expected.
Notably,
variance
among
individuals
over
time
observed
short-term
increase
followed
by
gradual
decrease,
significant
for
domesticated
animals.
This
implies
intense
human
immediately
releases
from
predation
pressure
then
imposes
strong
anthropogenic
selection
on
traits.
addition,
our
results
reveal
loss
due
urbanization
is
similar
domestication
but
occurs
times
more
slowly.
Furthermore,
disappearance
was
associated
2
main
life-history
traits:
foraging
guild
whether
species
solitary
or
gregarious
(i.e.,
group-living).
For
animals,
this
decrease
behavior
stronger
herbivores
than
omnivores
carnivores
species.
By
contrast,
gregarious,
urbanized
species,
although
result
based
mostly
birds.
Our
study
offers
major
insights
evolution
Anthropocene:
(1)
changes
occur
rapidly
even
unintentional
"interventions"
urbanization)
(2)
there
are
similarities
between
pressures
exerted
urbanization.
all,
such
could
survival
predator-rich
world,
through
dynamics,
can
better
predict
when
exposure
modify
fitness-related
Frontiers in Ecology and Evolution,
Journal Year:
2020,
Volume and Issue:
8
Published: Nov. 27, 2020
Urban
environments
pose
different
selective
pressures
than
natural
ones,
leading
to
changes
in
animal
behavior,
physiology,
and
morphology.
Understanding
how
animals
respond
urbanization
could
inform
the
management
of
urban
habitats.
Non-avian
reptiles
have
important
roles
ecosystems
worldwide,
yet
their
responses
not
been
as
comprehensively
studied
those
mammals
birds.
However,
unlike
birds,
most
cannot
easily
move
away
from
disturbances,
making
pressure
adapt
especially
strong.
In
recent
years,
there
has
a
surge
research
on
lizards
urbanization,
no
formal
synthesis
determined
what
makes
an
lizard,
other
words,
which
phenotypic
traits
are
likely
change
with
direction?
Here,
we
present
qualitative
literature
quantitative
phylogenetic
meta-analysis
comparing
between
non-urban
lizard
populations.
The
robust
finding
our
analysis
is
that
larger
counterparts.
This
result
remained
consistent
sexes
taxonomic
groups.
Hence,
pass
through
filter
access
better
resources,
more
time
for
foraging,
and/or
selection
attaining
body
size.
Other
results
included
increase
diameters
perches
used
longer
limb
digit
lengths,
although
this
may
be
increased
were
bolder,
active
or
exploratory,
did
differ
immune
Overall,
studies
biased
few
geographic
regions
taxa.
More
70%
all
data
came
three
species
anoles
family
Dactyloidae
,
it
difficult
generalize
patterns
clades.
Thus,
needed
across
multiple
taxa
habitats
produce
meaningful
predictions
help
conservation
ecological
communities.
Scientific Reports,
Journal Year:
2021,
Volume and Issue:
11(1)
Published: Feb. 4, 2021
Abstract
Studying
animals
in
urban
environments
is
especially
challenging
because
much
of
the
area
private
property
not
easily
accessible
to
professional
scientists.
In
addition,
collecting
data
on
that
are
cryptic,
secretive,
or
rare
also
due
time
and
resources
needed
amass
an
adequate
dataset.
Here,
we
show
community
science
can
be
a
powerful
tool
overcome
these
challenges.
We
used
observations
submitted
platform
iNaturalist
assess
predation
parasitism
across
urbanization
gradients
‘hard-to-study’
species,
Southern
Alligator
Lizard
(
Elgaria
multicarinata
).
From
photographs,
quantified
risk
by
assessing
tail
injuries
counting
tick
loads
lizards.
found
increased
with
age
urbanization,
suggesting
areas
risky
habitats.
Conversely,
decreased
likely
loss
hosts
anti-tick
medications
human
companion
animals.
This
approach
generated
large
dataset
secretive
species
rapidly
at
immense
spatial
scale
facilitated
quantitative
measures
(e.g.
percent
impervious
surface
cover)
as
opposed
qualitative
vs.
rural).
therefore
demonstrate
help
resolve
ecological
questions
otherwise
would
difficult
address.
Scientific Reports,
Journal Year:
2020,
Volume and Issue:
10(1)
Published: Sept. 29, 2020
Abstract
The
urbanization
process
systematically
leads
to
the
loss
of
biodiversity.
Only
certain
arthropods
are
resilient
and
can
thrive
in
novel
conditions
urbanized
landscapes.
However,
degree
which
arthropod
communities
survive
urban
habitats
depends
on
landscape
local
effects
biological
interactions
(e.g.,
trophic
interactions).
In
present
study,
we
examined
relative
importance
various
factors
at
(isolation,
edge
density
area
surrounding
greenery)
(size
park,
canopy
cover,
understory
vegetation
defoliation
depth,
weight
dried
leaves,
soil
temperature,
moisture,
pH)
spatial
scales
diversity
ants,
beetles
spiders
parks.
Our
results
indicated
that
park
was
negatively
correlated
with
metrics
beetles,
parks
proximity
peri-urban
forest.
other
words,
located
adjacent
forest
may
not
necessarily
have
high
suggested
man-made
structures
been
effective
dispersal
barriers
limit
spillover
ants
but
comparatively
strong
fliers,
such
as
beetles.
greenery
facilitated
colonization
forest-dependent
taxa
distant
Large
reduced
supported
a
higher
because
minimal
effect
increased
habitat
heterogeneity.
Vegetation
structure
consistently
explained
variability
spiders,
indicating
plant
litter
is
crucial
for
providing
shelters
hibernation,
oviposition,
foraging
sites
major
Therefore,
efforts
should
focus
management
ground
features
maximize
conservation
control