Functional Ecology,
Journal Year:
2023,
Volume and Issue:
37(10), P. 2634 - 2651
Published: Aug. 24, 2023
Abstract
Coastal
blue
carbon
(C)
ecosystems
are
recognized
as
efficient
natural
C
sinks
and
play
key
roles
in
mitigating
global
climate
change.
Microbially
driven
C,
nitrogen
(N)
sulphur
(S)
cycles
crucial
for
ecosystem
functioning,
but
how
microorganisms
drive
sink
formation
sequestration
coastal
sediments
remains
unclear.
In
this
study,
we
conducted
a
comprehensive
analysis
of
amino
sugars,
N
S
cycling
genes/pathways
their
associated
taxa
native
(
Cyperus
malaccensis
Kandelia
obovata
)
alien
Spartina
alterniflora
Sonneratia
apetala
vegetation.
Compared
to
the
alien‐vegetated
sediment,
native‐vegetated
sediment
had
significantly
p
<
0.05)
higher
microbial
necromass
functional
potentials
chemoautotrophic
fixation,
degradation,
methane
cycling,
2
oxidation
sulphate
reduction.
Also,
our
microbiomes
showed
that
could
be
coupled
with
fixation
and/or
nitrate/nitrite
oxidation,
degradation
were
found
pathways
predicting
C.
Additionally,
sulphur‐oxidizing
Burkholderiales
metagenome‐assembled
genomes
(MAGs)
group
dominated
sediments.
These
results
suggested
oxidizers,
particular
novel
lineage,
might
dominates
through
anabolism
(C
fixation);the
coupling
microbially
processes;
deposition
derived
This
study
provides
insights
into
importance
oxidizers
shed
new
light
on
mechanism
ecosystems,
which
also
has
important
implications
enhancing
wetlands.
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free
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Summary
article
Journal
blog.
Environmental Microbiome,
Journal Year:
2025,
Volume and Issue:
20(1)
Published: March 25, 2025
Abstract
Background
Microbial
communities
in
mangrove
sediments
play
vital
ecological
roles
that
underpin
the
functioning
of
overall
ecosystem.
Fungal
communities,
particular,
are
known
to
crucial
across
sediment
systems,
yet
their
sediments,
especially
deeper
layers,
remain
poorly
understood
without
a
comprehensive
inter-domain
characterization.
To
better
understand
fungal
horizons,
10
cores
extending
down
depth
1
m
were
taken
three
sites
characterise
archaeal,
bacterial,
and
at
cm
intervals.
Results
We
demonstrate
has
distinct
effects
on
microbial
communities.
While
community
compositions
similar
depths,
bacterial
archaeal
stratified
into
surface
(10–30
cm),
subsurface
(40–60
deep
(70–100
cm).
Co-occurrence
networks
then
constructed
investigate
fungi
these
where
consistently
identified
as
keystone
taxa
maintaining
network
topology,
with
co-domain
interactions
constituting
more
than
half
all
interactions.
Even
deepest
layer,
nodes
still
retained
high
betweenness
centralities,
acting
hubs
potentially
augment
for
Conclusions
Overall,
our
results
emphasise
important
role
mediating
depths
even
deep,
anoxic
highlight
importance
cross-domain
integral
holistic
understanding
microbiome.
