Limnology and Oceanography,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 14, 2025
Abstract
Periphyton
plays
an
important
functional
role
in
shallow
lakes
and
is
sensitive
to
variation
nutrient
availability
global
warming.
Understanding
the
responses
of
periphyton
changes
contrasting
warming
scenarios
can
contribute
development
more
efficient
techniques
for
restoration
a
future
warmer
world.
We
analyzed
response
early
eutrophication
oligotrophication
under
three
different
explored
associated
environmental
drivers
24
lake
mesocosms.
These
were
initially
set
up
2003
with
two
treatments
(with
or
without
addition)
temperatures
(ambient,
A2
IPCC
scenario
increased
by
50%)
following
full
factorial
design.
In
2023,
treatment
was
inverted,
starting
addition
low
mesocosms
(nutrient
increase)
stopping
decrease)
remaining.
Artificial
plants
placed
each
mesocosm
allow
develop
21
d,
both
before
after
inversion
treatments.
found
marked
biomass
composition
inversion,
but
no
Nutrient
decrease
induced
lower
compositional
at
species
group
levels.
increase
had
effect
on
accrual
altered
composition.
Our
results
suggest
that
nitrate
crucial
factor
driving
cessation
addition,
while
combination
variables
explained
treatment.
Abstract
Nutrient
enrichment
and
climate
warming
threaten
freshwater
systems.
Metabolic
theory
the
paradox
of
predict
that
both
stressors
independently
can
lead
to
simpler
food‐webs
having
fewer
nodes,
shorter
food‐chains
lower
connectance,
but
cancel
each
other's
effects
when
simultaneously
present.
Yet,
these
theoretical
predictions
remain
untested
in
complex
natural
We
inferred
food‐web
structure
256
lakes
373
streams
from
standardized
fish
community
samplings
France.
Contrary
predictions,
we
found
shortens
food‐chain
length
this
effect
was
magnified
enriched
lakes.
Additionally,
experiencing
exhibit
connectance
their
food‐webs.
Our
study
suggests
interact
magnify
simplification
nature,
raising
further
concerns
about
fate
systems
as
change
will
dramatically
increase
coming
decades.
Freshwater Biology,
Год журнала:
2025,
Номер
70(2)
Опубликована: Фев. 1, 2025
ABSTRACT
Many
organisms
respond
to
environmental
changes
through
plastic
modifications
of
their
phenotypes.
While
phenotypic
plasticity
has
been
extensively
studied
in
response
single
factors
laboratory
settings,
nature
face
the
combined
effects
diverse
biotic
and
abiotic
stressors.
These
multistressor
complicate
predictions
about
impact
on
population
dynamics.
One
approach
improving
predictive
accuracy
is
identify
common
mechanistic
links
variations
life‐history
traits.
In
this
study,
we
examined
how
stressors
influence
variation,
using
based
differing
thermal
sensitivities
differentiation
growth
rates
aquatic
amphibian
larvae
subsequent
behaviour
terrestrial
juveniles.
Using
a
mesocosm
experiment,
exposed
two
sympatric
newt
species,
Ichthyosaura
alpestris
Lissotriton
vulgaris
,
combinations
factor
(the
presence
heterospecifics)
an
(simulated
drying).
Our
results
revealed
that
simulated
drying
increased
availability
high
water
temperatures,
thereby
shortening
larval
period
as
predicted
by
sensitivity
rates.
The
heterospecifics,
not
regime,
size
at
emergence
larger
I.
consistent
with
relatively
low
carried
over
juveniles,
affecting
covered
distance
both
taxa,
while
heterospecifics
influenced
maximum
voluntary
speed
during
exploratory
This
suggests
additive
subsets
behavioural
traits
combine
individual
level,
depending
species
identity.
Future
research
should
focus
interplay
between
ecologically‐realistic
conditions
interactions
within
pond
assemblages
understand
Limnology and Oceanography,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 14, 2025
Abstract
Periphyton
plays
an
important
functional
role
in
shallow
lakes
and
is
sensitive
to
variation
nutrient
availability
global
warming.
Understanding
the
responses
of
periphyton
changes
contrasting
warming
scenarios
can
contribute
development
more
efficient
techniques
for
restoration
a
future
warmer
world.
We
analyzed
response
early
eutrophication
oligotrophication
under
three
different
explored
associated
environmental
drivers
24
lake
mesocosms.
These
were
initially
set
up
2003
with
two
treatments
(with
or
without
addition)
temperatures
(ambient,
A2
IPCC
scenario
increased
by
50%)
following
full
factorial
design.
In
2023,
treatment
was
inverted,
starting
addition
low
mesocosms
(nutrient
increase)
stopping
decrease)
remaining.
Artificial
plants
placed
each
mesocosm
allow
develop
21
d,
both
before
after
inversion
treatments.
found
marked
biomass
composition
inversion,
but
no
Nutrient
decrease
induced
lower
compositional
at
species
group
levels.
increase
had
effect
on
accrual
altered
composition.
Our
results
suggest
that
nitrate
crucial
factor
driving
cessation
addition,
while
combination
variables
explained
treatment.
