Chronobiology International,
Journal Year:
2023,
Volume and Issue:
40(5), P. 635 - 643
Published: March 30, 2023
Changes
in
day-length
entrain
the
endogenous
clock
of
organisms
leading
to
complex
responses
photoperiod.
In
long-lived
experiencing
several
seasons
this
response
photoperiod
is
phenotypically
plastic.
However,
short-lived
often
experience
a
single
season
without
pronounced
changes
day-length.
For
those,
plastic
different
would
not
necessarily
be
adaptive.
aquatic
ecosystems,
zooplankton
species
like
Daphnia
live
only
for
some
weeks,
i.e.
one
week
up
ca.
two
months.
they
show
succession
clones
that
are
seasonally
adapted
environmental
changes.
Here,
we
found
16
per
each
three
(
=
48
clones)
from
same
pond
and
year
differed
gene
expression
with
homogenous
pattern
ephippia-hatched
spring
bimodal
summer
autumn
populations
indicating
an
ongoing
adaptation
process.
We
clearly
demonstrate
were
short,
long
Furthermore,
melatonin-synthesis
enzyme
AANAT
was
always
lowest
clones.
Anthropocene,
Daphnia's
might
disturbed
by
light-pollution
global
warming.
Since
key-organism
trophic
carbon
transfer,
disruption
its
rhythm
devastating
stability
freshwater
ecosystems.
Our
results
important
step
understanding
Frontiers in Physiology,
Journal Year:
2021,
Volume and Issue:
12
Published: June 21, 2021
Artificial
Light
at
Night,
ALAN,
is
a
major
emerging
issue
in
biodiversity
conservation,
which
can
negatively
impact
both
terrestrial
and
marine
environments.
Therefore,
it
should
be
taken
into
serious
consideration
strategic
planning
for
urban
development.
While
the
lion’s
share
of
research
has
dealt
with
organisms,
only
handful
studies
have
focused
on
milieu.
To
determine
if
ALAN
impacts
coral
reef
symbiotic
algae,
that
are
fundamental
sustainable
reefs,
we
conducted
short
experiment
over
period
one-month
by
illuminating
isolated
Symbiodiniaceae
cell
cultures
from
genera
Cladocopium
(formerly
Clade
C)
Durusdinium
D)
LED
light.
Cell
were
exposed
nightly
to
levels
0.15
μmol
quanta
m
–2
s
–1
(∼4–5
lux)
three
light
spectra:
blue,
yellow
white.
Our
findings
showed
even
very
low
night,
photo-physiology
algae’s
Electron
Transport
Rate
(ETR),
Non-Photochemical
Quenching,
(NPQ),
total
chlorophyll,
meiotic
index
presented
significantly
lower
values
under
primarily,
but
not
exclusively,
cultures.
The
also
diverse
types
different
photosynthesis
performances
ALAN.
We
believe
our
results
sound
an
alarm
probable
detrimental
effects
increasing
sensory
pollutant,
eco-physiology
corals.
this
study
point
potential
other
organisms
ecosystem
such
as
fish,
zooplankton,
phytoplankton
their
biorhythms
entrained
natural
dark
cycles.
Marine Pollution Bulletin,
Journal Year:
2023,
Volume and Issue:
194, P. 115365 - 115365
Published: Aug. 11, 2023
Increasing
levels
of
Artificial
Light
At
Night
(ALAN)
alter
the
natural
diel
cycles
organisms
at
global
scale.
ALAN
constitutes
a
potential
threat
to
light-dependent
functioning
symbiotic
scleractinian
corals,
habit-founders
warm,
shallow
water
reefs.
Here,
we
show
that
disrupts
tentacle
expansion
and
contraction
behaviour,
key
mechanism
for
prey
capture
nutrient
acquisition
in
corals.
We
exposed
four
coral
species
different
treatments
(0.4-2.5
μmol
quanta
m-2
s-1).
Exposure
1.2
s-1
above
altered
normal
response
diurnal
(Stylophora
pistillata
Duncanopsammia
axifuga).
The
pattern
nocturnal
(Montastraea
cavernosa
Lobophyllia
hemprichii)
was
less
affected,
which
may
indicate
greater
capacity
tolerate
exposure.
results
this
work
suggest
has
affect
mechanisms
corals
turn
result
changes
community
structure
reefs
ALAN-exposed
areas.
Proceedings of the Royal Society B Biological Sciences,
Journal Year:
2023,
Volume and Issue:
290(2000)
Published: June 14, 2023
Encroachment
of
artificial
light
at
night
(ALAN)
into
natural
habitats
is
increasingly
recognized
as
a
major
source
anthropogenic
disturbance.
Research
focussed
on
variation
in
the
intensity
and
spectrum
ALAN
emissions
has
established
physiological,
behavioural
population-level
effects
across
plants
animals.
However,
little
attention
been
paid
to
structural
aspect
this
light,
nor
how
combined
morphological
anti-predator
adaptations
are
affected.
We
investigated
lighting
structure,
background
reflectance
three-dimensional
properties
environment
affect
defences
marine
isopod
Ligia
oceanica.
Experimental
trials
monitored
responses
including
movement
choice,
also
colour
change,
widespread
mechanism
considered
relation
exposure.
found
that
isopods
were
consistent
with
classic
risk-aversion
strategies,
being
particularly
exaggerated
under
diffuse
lighting.
behaviour
was
disconnected
from
optimal
caused
become
lighter
coloured
while
seeking
out
darker
backgrounds.
Our
work
highlights
potential
for
structure
play
key
role
processes
likely
adaptations,
survival,
ultimately
wider
ecological
effects.
Freshwater Biology,
Journal Year:
2021,
Volume and Issue:
66(12), P. 2264 - 2271
Published: Oct. 12, 2021
Abstract
The
increasing
use
of
artificial
light
at
night
has
led
to
ecosystem
exposure
pollution
worldwide.
Aquatic
ecosystems
are
particularly
exposed,
since
lit
road
networks,
urban
development
and
industrial
infrastructure
frequently
located
along
river,
lake,
sea
shores.
Although
the
negative
effects
night‐time
lighting
on
physiology,
behaviour,
life‐history
traits
animals
have
been
largely
documented,
there
is
a
large
knowledge
gap
about
responses
plants,
especially
regarding
leaf
functioning
resource‐management
strategies.
Some
authors
proposed
contrasting
hypotheses
mechanistic
dim
in
but
empirical
results
still
lacking.
Based
field
measurements
nocturnal
irradiance
freshwater
peri‐urban
areas,
we
performed
mesocosm
experiment
using
three
species
submerged
aquatic
plants.
After
5
months
realistic
night,
four
functional
related
resource
management
level
were
measured.
Artificial
had
significant
physiology
or
chemistry,
affecting
their
acquisition
rate,
with
different
response
intensities
depending
species.
No
effect
was
found
morphological
biomechanical
for
any
studied
These
support
hypothesis
that
plants
could
interpret
as
shaded
environment
respond
accordingly.
We
demonstrated
may
underestimated
previous
work.
By
modifying
biotic
interactions
(e.g.,
competition
herbivory),
these
can
profound
community
structure
functioning.
Journal of Marine Science and Engineering,
Journal Year:
2022,
Volume and Issue:
10(3), P. 354 - 354
Published: March 2, 2022
Marine
energy
is
poised
to
become
an
important
renewable
contributor
for
the
U.S.,
but
widespread
deployment
of
technology
hinges
on
its
benefits
outweighing
potential
ecological
impacts.
One
stressor
marine
installations
introduce
light,
which
known
cause
varying
responses
among
wildlife
and
has
not
yet
been
addressed
as
environmental
concern.
This
review
discusses
requirements
regulations
similar
structures
how
lighting
design
choices
can
be
made
meet
these
while
minimizing
consequences.
More
practical
guidance
implementing
needed,
well
updated
guidelines
reflect
technological
research
advances.
Known
light
are
introduced
in
addition
individuals
may
lead
ecosystem-level
changes.
The
impact
associated
with
reduced
by
following
basic
provided
herein,
such
removing
excess
lighting,
using
lights
high
directionality,
employing
controls
reduce
levels.
Continued
animal
findings
minimum
levels
responses,
alongside
development
highly-sensitivity
spectral
characterization
capabilities
further
inform
deploying
future
open
ocean
devices.
