Journal of Phycology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 17, 2024
Abstract
Climate
change
has
profound
effects
on
the
distribution
of
kelp
forests
in
Arctic
and
sub‐Arctic.
However,
studies
responses
kelps
to
climate
change,
particularly
along
sub‐Arctic
regions
Alaska
coast,
are
limited.
Eualaria
fistulosa
is
a
foundational
species
Aleutian
Islands,
with
an
east–west
that
extends
from
Japan
southern
southwest
Alaska.
In
this
study,
we
utilized
model
(SDM)
explore
changes
future
habitat
suitability
E.
under
contrasting
Shared
Socioeconomic
Pathway
(SSP)
scenarios.
Our
exhibited
relatively
high
predictive
performance,
validating
our
SDM
predictions.
Notably,
results
indicate
minimum
sea
surface
temperature,
annual
range
temperatures,
mean
current
velocities
three
most
important
predictor
variables
determining
's
distribution.
Furthermore,
projected
geographic
generally
consistent
its
observed
occurrence
records.
emission
scenarios
(SSP5‐8.5),
predicted
contract
by
9.0%
2100,
widespread
disappearance
southeast
Alaskan
coast
limited
northward
migration
Kamchatka
Krai
Russia
Bristol
Bay
These
findings
contribute
valuable
insights
for
conservation
strategies
via
addressing
climate‐induced
alterations
Marine and Freshwater Research,
Journal Year:
2023,
Volume and Issue:
74(11), P. 928 - 940
Published: June 7, 2023
Context
Range-edge
populations
persist
closer
to
their
physiological
thresholds,
often
limiting
reproductive
output.
Kelps
are
foundation
species
on
temperate
reefs,
but
phenology
at
range
edges
remains
poorly
understood.
Aims
We
assess
the
of
Ecklonia
radiata
its
eastern
Australian
warm
edge
in
relation
local
environmental
conditions
and
make
comparisons
with
throughout
Australia.
Methods
E.
fertility
was
monitored
over
multiple
years
predictors
were
assessed
using
generalised
additive
models.
Fertility
responses
compared
data
from
centre
cold
range-edge
populations.
Key
results
The
proportion
fertile
plants
increased
as
daylength
declined
length
tissue
positively
correlated
temperature.
magnitude
spore
release
variable
responded
episodic
swell
rainfall
events.
This
is
contrary
spore-release
populations,
which
demonstrated
seasonal
patterns
Conclusion
Spore
lower
edge,
yet
year-round
flexibility
response
conditions.
Implications
Flexible
may
be
advantageous
for
sustaining
low
latitudes
under
climate
change.
Journal of Phycology,
Journal Year:
2024,
Volume and Issue:
60(5), P. 1161 - 1172
Published: Aug. 6, 2024
Abstract
Understanding
how
macroalgal
forests
will
respond
to
environmental
change
is
critical
for
predicting
future
impacts
on
coastal
ecosystems.
Although
measures
of
adult
macroalgae
physiological
responses
stress
are
advancing,
early
life‐stage
physiology
rare,
in
part
due
the
methodological
difficulties
associated
with
their
small
size.
Here
we
tested
a
novel,
high‐throughput
method
(rate
oxygen
consumption
and
production;
)
via
sensor
dish
reader
microplate
system
rapidly
measure
rates
life
stages
three
habitat‐forming
macroalgae,
kelp
Ecklonia
radiata
fucoids
Hormosira
banksii
Phyllospora
comosa
.
We
measured
rate
O
2
(respiration)
production
(net
primary
production)
then
calculate
gross
(GPP)
under
temperatures
representing
natural
thermal
range.
The
was
suitable
measuring
over
temperature
gradient
establish
performance
curves
all
species.
proved
efficient
ranging
size
from
approximately
50
μm
up
150
mm.
This
has
potential
across
range
factors,
species,
populations,
developmental
stages,
vastly
increasing
speed,
precision,
efficacy
ocean
scenarios.
Ecology and Evolution,
Journal Year:
2024,
Volume and Issue:
14(8)
Published: Aug. 1, 2024
Abstract
Dispersal
of
reproductive
propagules
determines
recruitment
patterns
and
connectivity
among
populations
can
influence
how
respond
to
major
disturbance
events.
distributions
depend
on
propagule
release
strategies.
For
instance,
the
bull
kelp,
Nereocystis
luetkeana
,
(spores)
from
two
heights
in
water
column
(“bimodal
release”):
at
surface,
directly
tissues
(sori)
kelp's
blades,
near
seafloor
after
sori
abscise
sink
through
column.
N.
is
a
foundation
species
that
occurs
central
California
Alaska
experiencing
unprecedented
levels
population
declines
its
southern
range
limit.
We
know
little
dispersal
distributions,
which
could
recovery
restoration.
Here,
we
quantify
bimodal
spore
affect
outcomes
based
numerical
model
specifically
designed
for
.
The
incorporates
oceanographic
conditions
typical
species'
coastal
kelp
biological
traits.
With
heights,
34%
spores
are
predicted
settle
within
10
m
parental
alga
60%
disperse
beyond
100
m.
As
an
annual
species,
facilitate
local
regeneration
adults
source
forest
while
also
supporting
multiple
forests
broader
metapopulations.
To
leverage
this
pattern
restoration
management,
directing
resources
toward
strategically
located
focal
seed
other
ones
amplify
scale
recovery.
Journal of Phycology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 17, 2024
Abstract
Climate
change
has
profound
effects
on
the
distribution
of
kelp
forests
in
Arctic
and
sub‐Arctic.
However,
studies
responses
kelps
to
climate
change,
particularly
along
sub‐Arctic
regions
Alaska
coast,
are
limited.
Eualaria
fistulosa
is
a
foundational
species
Aleutian
Islands,
with
an
east–west
that
extends
from
Japan
southern
southwest
Alaska.
In
this
study,
we
utilized
model
(SDM)
explore
changes
future
habitat
suitability
E.
under
contrasting
Shared
Socioeconomic
Pathway
(SSP)
scenarios.
Our
exhibited
relatively
high
predictive
performance,
validating
our
SDM
predictions.
Notably,
results
indicate
minimum
sea
surface
temperature,
annual
range
temperatures,
mean
current
velocities
three
most
important
predictor
variables
determining
's
distribution.
Furthermore,
projected
geographic
generally
consistent
its
observed
occurrence
records.
emission
scenarios
(SSP5‐8.5),
predicted
contract
by
9.0%
2100,
widespread
disappearance
southeast
Alaskan
coast
limited
northward
migration
Kamchatka
Krai
Russia
Bristol
Bay
These
findings
contribute
valuable
insights
for
conservation
strategies
via
addressing
climate‐induced
alterations
