Understanding
the
mechanisms
controlling
community
diversity
is
a
central,
topic
in
ecology,
particularly
microbial
ecology.
Although
species
pools
and
local
assembly
processes
are
believed
to
play
non‐negligible
roles
shaping
within‐community
(α)
among‐community
(β)
of
communities,
their
relative
importance
as
succession
progresses
remains
elusive.
Moreover,
both
on
might
be
strikingly
different
depending
whether
saturation
considered
or
not,
yet
this
issue
far
less
appreciated.
To
investigate
underlying
soil
fungal
α
β
during
secondary
succession,
samples
were
collected
from
six
successional
chronosequences
including
293
plots
across
climatic
zones.
We
found
that
all
chronosequences,
increases
tracked
pool
size,
showing
linear
unsaturated
relationship,
despite
not
always
co‐varied
with
size.
After
correcting
for
differences
pools,
environmental
selection
appeared
explain
variation
rather
than
diversity.
Further
piecewise
structural
equation
modeling
demonstrated
was
more
important
change
most
cases,
whereas
heterogeneous
outweighed
Overall,
these
findings
represent
one
first
demonstrate
communities
unsaturated,
where
variations
differs
markedly.
Considering
will
distinctly
under
unsaturation
saturation,
we
set
up
an
extended
conceptual
model
combined
theory
broaden
perspective
comprehensively
understand
causing
biodiversity
unsaturated/saturated
intending
enhance
our
ability
predict
future.
Global Change Biology,
Год журнала:
2023,
Номер
30(1)
Опубликована: Ноя. 13, 2023
Abstract
Microbes
inhabiting
deep
soil
layers
are
known
to
be
different
from
their
counterpart
in
topsoil
yet
remain
under
investigation
terms
of
structure,
function,
and
how
diversity
is
shaped.
The
microbiome
soils
(>1
m)
expected
relatively
stable
highly
independent
climatic
conditions.
Much
less
known,
however,
on
these
microbial
communities
vary
along
climate
gradients.
Here,
we
used
amplicon
sequencing
investigate
bacteria,
archaea,
fungi
fifteen
18‐m
depth
profiles
at
20–50‐cm
intervals
across
contrasting
aridity
conditions
semi‐arid
forest
ecosystems
China's
Loess
Plateau.
Our
results
showed
that
bacterial
fungal
α
archaeal
community
similarity
declined
dramatically
remained
soil.
Nevertheless,
still
the
functional
potential
N
cycling,
plant‐derived
organic
matter
degradation,
resource
exchange,
water
coordination.
had
closer
taxa–taxa
bacteria–fungi
associations
more
influence
dispersal
limitation
than
microbiome.
Geographic
distance
was
influential
bacteria
archaea
topsoil.
We
further
negatively
correlated
with
deep‐soil
richness,
similarity,
relative
abundance
plant
saprotroph,
associations,
but
increased
aerobic
ammonia
oxidation,
manganese
arbuscular
mycorrhizal
soils.
Root
depth,
complexity,
volumetric
moisture,
clay
play
bridging
roles
indirect
effects
microbes
work
indicates
that,
even
nutrient
cycling
susceptible
changes
availability,
consequences
for
understanding
sustainability
dryland
whole‐soil
response
aridification.
Moreover,
propose
neglecting
may
underestimate
role
moisture
future
scenarios.
FEMS Microbiology Ecology,
Год журнала:
2024,
Номер
100(3)
Опубликована: Фев. 14, 2024
Different
types
of
inlet
water
are
expected
to
affect
microbial
communities
lake
ecosystems
due
changing
environmental
conditions
and
the
dispersal
species.
However,
knowledge
effects
changes
in
export
assemblages
on
is
limited,
especially
for
glacier-fed
lakes.
Here,
we
collected
samples
from
surface
a
its
two
fed
streams
Tibetan
Plateau
investigate
importance
glacial
non-glacial
as
sources
diversity
bacterial
communities.
Results
showed
that
stream
was
an
important
source
microorganisms
studied
lake,
contributing
45.53%
total
community
water,
while
only
19.14%
seeded
by
stream.
Bacterial
were
significantly
different
between
streams.
pH,
conductivity,
dissolved
solids,
temperature
nitrogen
had
significant
effect
spatial
turnover,
together
explained
36.2%
variation
distribution
among
habitats.
Moreover,
co-occurrence
associations
tended
be
stronger
than
Collectively,
this
study
may
provide
reference
assessing
contributions
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Авг. 5, 2024
Microorganisms
consume
and
transform
dissolved
organic
matter
(DOM)
into
various
forms.
However,
it
remains
unclear
whether
the
ecological
patterns
drivers
of
DOM
chemodiversity
are
analogous
to
those
microbial
communities.
Here,
a
large-scale
investigation
is
conducted
along
Chinese
coasts
resolve
intrinsic
linkages
among
complex
intertidal
pools,
communities
environmental
heterogeneity.
The
abundance
molecular
formulae
best
fits
log-normal
distribution
follows
Taylor's
Law.
Distance-decay
relationships
observed
for
labile
formulae,
while
latitudinal
diversity
gradients
noted
recalcitrant
formulae.
Latitudinal
also
features.
Negative
cohesion,
bacterial
diversity,
traits
main
chemodiversity.
Stochasticity
analyses
demonstrate
that
determinism
dominantly
shapes
compositional
variations.
This
study
unveils
mechanisms
underlying
from
perspectives,
deepening
our
understanding
microbially
driven
chemical
ecology.
Intertidal
similar
microbes,
suggesting
there
may
exist
universal
models
explaining
both
living
non-living
biological
entities
in
Earth's
biosphere.
