The ISME Journal,
Journal Year:
2024,
Volume and Issue:
18(1)
Published: Jan. 1, 2024
Abstract
Prediction
of
the
complex
cyanobacteria-environment
interactions
is
vital
for
understanding
harmful
bloom
formation.
Most
previous
studies
on
these
considered
specific
properties
cyanobacterial
cells
as
representative
entire
population
(e.g.
growth
rate,
mortality,
and
photosynthetic
capacity
(Pmax)),
assumed
that
they
remained
spatiotemporally
unchanged.
Although,
at
level,
alteration
such
traits
can
be
driven
by
intraspecific
competition,
little
known
about
how
their
plasticity
change
in
response
to
environmental
conditions
affect
Here
we
test
hypothesis
variations
Pmax
cyanobacteria
(Microcystis
spp.)
play
an
important
role
its
dynamics.
We
coupled
a
one-dimensional
hydrodynamic
model
with
trait-based
phytoplankton
simulate
effects
physical
drivers
(turbulence
turbidity)
Microcystis
populations
range
dynamic
typical
shallow
eutrophic
lakes.
Our
results
revealed
turbulence
acts
directional
selective
driver
changes
Pmax.
Depending
intensity
daily-periodic
turbulence,
representing
wind-driven
mixing,
shift
population-averaged
phenotypes
occurred
toward
either
low
Pmax,
allowing
capture
additional
light
upper
layers,
or
high
enhancing
efficiency
utilization.
Moreover,
observed
diversity
accelerated
formation
surface
scum
up
more
than
four
times
compared
lower
diversity.
This
study
offers
insights
into
mechanisms
which
respond
underscores
significance
Highlights
