Living Beyond the Edge: Impacts of Climate Change on Rock Lizards at the Niche Margin
Animal Conservation,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 27, 2025
ABSTRACT
Ectotherms
are
particularly
threatened
by
climate
change
because
they
strictly
reliant
on
environmental
conditions
for
homeostasis.
Increasing
temperatures
may
approach
the
species'
critical
thermal
maximum,
with
deleterious
effects
individual
thermoregulation
capacities.
This
study
tests
hypothesis
developed
in
a
recent
work
that
under
ongoing
global
warming
populations
living
sites
at
warm
edge
of
niche
will
suffer
disruption
process,
detrimental
and
population
level.
We
collected
measurements
temperature
data
Mediterranean
endemic
rock
lizards,
across
entire
distribution
range
species
during
two
different
sampling
periods
~20
years
apart
to
compare
coefficient
(C),
body
condition
index
(BCI)
size
climatic
conditions.
found
C
BCI
vary
space
time
following
linear
pattern
along
gradient
(Niche
Margin
Effect,
NME)
until
threshold
temperature,
beyond
which
NME
is
disrupted.
indicates
niche.
A
slightly
higher
marks
we
observed
significant
declines
over
20‐year
period
warmest
sites.
suggests
lagged
response
trends
warming.
mechanism
homeostatic
processes
when
margin
reached
parameters
such
as
condition,
rather
than
demographic
trends,
key
indicators
an
early
detection
extinction
risk.
The
multipopulation
implemented
our
allows
identify
underlies
vulnerability
warming,
suffering
negative
before
collapse.
might
allow
plan
appropriate
mitigation
measures
management
strategies
avoid
local
extinctions.
Язык: Английский
Latitudinal gradient of thermal safety margin in an Australian damselfly: implications for population vulnerability
Royal Society Open Science,
Год журнала:
2025,
Номер
12(3)
Опубликована: Март 1, 2025
The
thermal
tolerance
of
species
may
be
exceeded
by
the
predicted
temperature
increases
and
thus
contribute
to
extinction.
However,
impact
is
thought
vary
between
climate
regions
across
latitudes.
Here,
we
aim
establish
vulnerability
an
ectothermic
insect
a
warming
estimating
safety
margin
in
Ischnura
heterosticta
damselflies.
We
measured
critical
maximum
(CTmax)
along
latitudinal
gradient
17°
from
21
populations
eastern
coast
Australia.
Our
results
showed
that
damselflies
inhabiting
tropical
had
higher
CTmax
than
temperate
increased
with
increasing
mean
decreasing
latitude.
further
found
positive
correlation
damselfly
parasite
number
temperature.
Body
size,
body
condition
sex
no
on
CTmax.
projections
will
narrower
tropics
compared
under
2.6°C
annual
(future
projected
-
current)
increase
for
years
2061-2080.
Therefore,
are
likely
more
vulnerable
change-driven
extinction
even
though
they
have
relatively
Nevertheless,
behaviour,
adaptation
plasticity
might
mitigate
vulnerability.
Язык: Английский
Evolution and Responses to Climate Change
Elsevier eBooks,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Язык: Английский
Environmental factors influence cross-talk between a heat shock protein and an oxidative stress protein modification in the lizard Gallotia galloti
PLoS ONE,
Год журнала:
2024,
Номер
19(3), С. e0300111 - e0300111
Опубликована: Март 12, 2024
Better
understanding
how
organisms
respond
to
their
abiotic
environment,
especially
at
the
biochemical
level,
is
critical
in
predicting
population
trajectories
under
climate
change.
In
this
study,
we
measured
constitutive
stress
biomarkers
and
protein
post-translational
modifications
associated
with
oxidative
Gallotia
galloti
,
an
insular
lizard
species
inhabiting
highly
heterogeneous
environments
on
Tenerife.
Tenerife
a
small
volcanic
island
relatively
isolated
archipelago
off
West
coast
of
Africa.
We
found
that
expression
GRP94,
molecular
chaperone
protein,
levels
carbonylation,
marker
cellular
stress,
change
across
different
environments,
depending
solar
radiation-related
variables
topology.
Here,
report
wild
animal
population,
cross-talk
between
baseline
heat
shock
protein-like
GRP94
damage
(protein
carbonylation),
which
are
influenced
by
range
available
temperatures,
quantified
through
modelled
operative
temperature.
This
suggests
dynamic
trade-off
homeostasis
lizards
adapted
thermally
topologically
environment.
Язык: Английский
Global thermal tolerance of freshwater invertebrates and fish
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 11, 2024
Abstract
Scientists
have
investigated
the
thermal
tolerance
of
organisms
for
centuries,
yet
field
has
not
lost
relevance
as
environmental
threats
pollution
and
global
change
sharpen
need
to
understand
vulnerability
in
landscapes
increasingly
subjected
multiple
stressors.
Freshwater
fish
especially
invertebrates
are
greatly
underrepresented
recent
large-scale
compilations
tolerance,
despite
importance
freshwater
habitats
a
crucial
resource
biodiversity
havens.
This
inspired
us
create
database
these
that
includes
literature
from
1900
until
present
day
sourced
five
languages
counteract
geographic
bias,
395
tests
conducted
with
additional
stressors
present.
The
contains
over
5000
records
800
species,
including
452
invertebrates,
providing
valuable
test
hypotheses
on
risks
future
environments,
how
might
stressor
scenarios.
Язык: Английский
Physiological thermal niches, elevational ranges and thermal stress in dendrobatid frogs: An integrated approach
Journal of Biogeography,
Год журнала:
2024,
Номер
51(10), С. 1880 - 1893
Опубликована: Май 7, 2024
Abstract
Aim
We
investigated
the
relationship
between
thermal
physiology,
elevational
distribution
and
stress
among
nine
closely
related
dendrobatid
frogs
during
their
aquatic
stage
by
employing
an
integrated
approach,
combining
environmental
temperature
modelling
predictive
assessments
of
current
future
exposure
to
variation.
Location
Ecuador.
Taxon
Amphibians;
Anura,
Dendrobatidae,
Epipedobates,
Hyloxalus.
Methods
determined
performance
curves
(TPCs)
larval
growth
for
each
species
modelled
variation
in
contrasting
environments
both
present
times.
This
allowed
us
estimate
expected
distributions
forecast
periods
stressful
temperatures
that
inhibit
due
elevation
global
warming.
Results
found
significant
correlations
optimum
(Topt),
50%
maximum
(maxB50),
minimum
(minB50)
cold
resistance
(survival
at
9°C)
with
distributions.
However,
physiology
predicted
lower
than
observed
high‐elevation
dendrobatids
higher
elevations
lowland
species.
Nonetheless,
our
models
low
variability
habitats
(i.e.
streams
deep
permanent
ponds)
can
buffer
increase
all
taxa,
even
when
considering
most
extreme
scenario.
In
contrast,
within
high
(open
forest
temporary
are
experience
under
conditions.
Main
Conclusions
The
findings
indicate
may
not
be
a
limiting
factor
frog
species'
ranges
this
equatorial
mountain
gradient.
Highland
need
adapt
suboptimal
performance,
while
some
could
occupy
elevations.
study
emphasizes
importance
habitat
buffering
mitigate
face
climate
change
amphibians
tropical
mountains.
Язык: Английский
Environmental factors affecting phenology and distribution of Tentyria species (Coleoptera: Tenebrionidae) in Doñana National Park (Southern Iberian Peninsula)
Journal of Insect Science,
Год журнала:
2024,
Номер
24(4)
Опубликована: Июль 1, 2024
Abstract
This
research
focuses
on
the
effect
of
environmental
factors
phenology
and
distribution
Tentyria
species
(Coleoptera:
Tenebrionidae)
from
Doñana
National
Park
(SW
Iberian
Peninsula).
Data
are
derived
results
a
project
carried
out
20
years
ago,
aimed
at
inventorying
coleopteran
park.
information
provides
framework
for
comparison
with
current
or
future
states
since
time
elapsed
is
long
enough
to
detect
variations.
As
classification
complex
controversial,
first
aspect
be
addressed
was
taxonomical
verification
species.
Indeed,
they
were
T.
platyceps
Steven.,
subcostata
Solier.,
bifida
Bujalance,
Cárdenas,
Ferrer
Gallardo,
donanensis
Gallardo.
Sampling
consisted
2
monthly
pitfall
trapping,
encompassing
surface
park
adjacent
areas.
adult
seasonal
activity
spatial
obtained
specific
abundance
in
each
sampling
plot.
Phenologically,
4
mainly
summer
species,
unimodal
bimodal
curves
depending
The
quite
uneven:
while
ubiquitous,
restricted
southern
coastal
area
park,
recorded
northern
half,
marshes
inland
forests,
respectively.
Our
also
suggest
that
extreme
temperatures
may
impose
major
constraints
which
could
affect
Doñana’s
biodiversity
scenery
thermal
rise
linked
climate
change.
Язык: Английский
Alpine viper in changing climate: thermal ecology and prospects of a cold-adapted reptile in the warming Mediterranean
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Авг. 16, 2024
Abstract
In
a
rapidly
changing
thermal
environment,
reptiles
are
primarily
dependent
on
in
situ
adaptation
because
of
their
limited
ability
to
disperse
and
the
restricted
opportunity
shift
ranges.
However,
rapid
pace
climate
change
may
surpass
these
capabilities
or
elevate
energy
expenditures.
Therefore,
understanding
variability
traits
at
both
individual
population
scales
is
crucial,
offering
insights
into
reptiles'
vulnerability
change.
We
studied
ecology
endangered
Greek
meadow
viper
(
Vipera
graeca
),
an
endemic
venomous
snake
fragmented
alpine-subalpine
meadows
above
1600
m
Pindos
mountain
range
Greece
Albania,
assess
its
susceptibility
anticipated
changes
alpine
environment.
measured
preferred
body
temperature
artificial
gradient,
field
temperatures
74
individuals
five
populations
encompassing
entire
geographic
species,
collected
data
available
for
thermoregulation.
found
that
T
p
)
differed
only
between
northernmost
southernmost
increased
with
female
size
but
did
not
depend
sex
gravidity
status
females.
latitude
was
unaffected
by
phylogenetic
position
populations.
also
high
accuracy
thermoregulation
V.
variation
quality
habitats
throughout
range.
The
overall
effectiveness
high,
indicating
successfully
achieves
target
exploits
landscape.
Current
climatic
conditions
limit
activity
period
estimated
1278
h
per
year,
which
expected
increase
considerably
under
future
scenarios.
Restricted
time
thermoregulation,
foraging
reproduction
will
represent
serious
threat
fitness
persistence
addition
habitat
loss
due
mining,
tourism
skiing
degradation
overgrazing
shrinking
mountaintop
.
Язык: Английский
Novel method to investigate thermal exchange rates in small, terrestrial ectotherms: A proof-of-concept on the gecko Tarentola mauritanica
PLoS ONE,
Год журнала:
2024,
Номер
19(12), С. e0316283 - e0316283
Опубликована: Дек. 26, 2024
Thermoregulating
ectotherms
may
resort
to
different
external
heat
sources
modulate
their
body
temperature
through
an
array
of
behavioural
and
physiological
adaptations
which
exchange
with
the
environment
its
distribution
across
animal’s
body.
Even
small-bodied
animals
are
capable
fine
control
over
such
rates
subsequent
re-allocation
Such
thermal
exchanges
usually
happen
two
non-mutually
exclusive
modes:
heliothermy
(radiant
gain
from
sun)
or
thigmothermy
(heat
gained
lost
via
conduction).
Classically,
study
these
phenomena
has
relied
on
invasive
methodologies
often
disregard
effect
stress,
behaviour
regional
heterothermy
patterns
animal.
This
proposes
a
novel
experimental
methodology,
capitalising
thermography,
provide
alternative
method
less
invasively
obtain
reliable
temperatures
thermoregulating
ectotherms,
while
allowing
heating
mode
be
considered
when
quantifying
rates.
methodology
was
tested
in
gecko
Tarentola
mauritanica
,
where
twenty
males
were
allowed
up
cool
down
under
set-up
isolates
heliothermic
thigmothermic
processes,
being
recorded
camera.
The
revealed
differences
cooling
several
parts
per
treatment
suggesting
that
complex
even
small
ectotherms.
Ultimately,
described
provides
opportunity
revisit
classical
questions
more
flexible
approach,
enabling
processes
disentangled.
also
better
integrates
physiology
obtaining
higher
temporal
spatial
resolution
ectotherm.
Язык: Английский