The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
924, P. 171626 - 171626
Published: March 11, 2024
Las
Tablas
de
Daimiel
National
Park
(TDNP,
Iberian
Peninsula)
is
a
semi-arid
wetland
of
international
significance
for
waterfowl
and
serves
as
migratory
route
various
bird
species.
However,
TDNP
presents
strong
anthropization
fluctuating
water
levels,
making
it
highly
fragile
ecosystem.
Water
physico-chemical
parameters
microbial
diversity
the
three
domains
(Bacteria-Archaea-
Eukarya)
were
analysed
in
Zone
A
B
(a
total
eight
stations)
during
spring
summer,
aiming
to
determine
how
seasonal
changes
influence
quality,
trophic
status
ultimately,
community
composition.
Additionally,
Photosynthetically
Active
Radiation
(PAR)
was
used
instead
transparency
using
Secchi
disk,
setting
threshold
20-40
μmol/sm
Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
57(1), P. 297 - 309
Published: Dec. 28, 2022
To
explore
the
effect
of
different
types
dissolved
organic
matter
(DOM)
decomposition
on
nutrient
cycling
pathways
and
microbial
loop,
four
lakes
with
DOM
sources
were
investigated
monthly.
In
Lake
Tangxun,
Dolichospermum
decay
released
highly
labile
nitrogen
into
water
column.
This
induced
bacterial
decomposition,
as
indicated
by
increased
abundance
gltB,
gltD,
gdh,
glnA
well
aminopeptidase
activity.
Genes
associated
dissimilatory
nitrate
reduction
to
ammonium
further
fueled
accumulation,
driving
Microcystis
blooms
in
summer.
Zhiyin,
fish
bait
deposits
(high
nitrogen,
similar
detritus)
also
caused
blooms.
Detritus
from
then
produced
high
levels
phosphorus,
inducing
phosphatase
activity
increasing
soluble
reactive
phosphorus
concentrations
September
April
Lakes
Tangxun
Zhiyin.
The
refractory
macrophytes
Houguan
led
insufficient
availability,
leading
mutualism
between
algae
bacteria.
carbon
terrestrial
detritus
Yandong
biomass
production,
resulting
low
chlorophyll
content
due
competitive
relationship
algal
requirements.
Therefore,
compositions
induce
unique
connections
among
available
nutrients,
algae,
bacteria
loop.
Ecotoxicology and Environmental Safety,
Journal Year:
2023,
Volume and Issue:
253, P. 114713 - 114713
Published: March 1, 2023
Persistent
Organic
Pollutants
(POPs)
may
exert
adverse
effects
on
human
and
ecosystem
health.
However,
as
an
ecologically
fragile
zone
with
strong
interaction
between
river
groundwater,
the
POPs
pollution
in
riparian
has
received
little
attention.
The
goal
of
this
research
is
to
examine
concentrations,
spatial
distribution,
potential
ecological
risks,
biological
organochlorine
pesticides
(OCPs)
polychlorinated
biphenyls
(PCBs)
groundwater
Beiluo
River,
China.
results
showed
that
level
risk
OCPs
River
were
higher
than
PCBs.
presence
PCBs
(Penta-CBs,
Hexa-CBs)
CHLs,
respectively,
have
reduced
richness
bacteria
(Firmicutes)
fungi
(Ascomycota).
Furthermore,
Shannon's
diversity
index
algae
(Chrysophyceae
Bacillariophyta)
decreased,
which
could
be
linked
(DDTs,
DRINs),
Hepta-CBs),
while
for
metazoans
(Arthropoda)
tendency
was
reversed,
presumably
a
result
SULPHs
pollution.
In
network
analysis,
core
species
belonging
(Proteobacteria),
(Ascomycota),
(Bacillariophyta)
played
essential
roles
maintaining
community
function.
Burkholderiaceae
Bradyrhizobium
can
considered
indicators
River.
Note
network,
playing
fundamental
role
interactions,
are
strongly
affected
by
pollutants.
This
work
provides
insights
into
functions
multitrophic
communities
stability
ecosystems
through
response
contamination.
