The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
915, P. 170091 - 170091
Published: Jan. 15, 2024
Ecological
thresholds
are
a
useful
indicator
for
implementing
ecological
management.
Many
studies
determine
the
nutrient
loads
in
lakes
based
on
maximum
allowable
concentration
of
chlorophyll
(Chla),
although
this
neglects
overall
performance
ecosystem.
A
PCLake
model
Baiyangdian
(BYD)
Lake
northern
China
was
constructed
with
six
network
analysis
(ENA)
indicators
that
characterized
ecosystem
function,
system
maturity,
and
food
web
structure
to
quantify
status
BYD
To
my
knowledge,
is
first
study
level
responses
phosphorus
load
interference.
Different
scenarios
were
designed
simulate
Lake.
The
simulated
results
employed
calculate
ENA
indicators.
determined
through
driving
response
relationship
between
gradient
show
non-linear
transition
under
gradient.
As
increases,
D/H,
SOI,
FCI
decreases
while
A/DC,
TPP/TR,
TPP/TB
increases.
This
indicates
function
will
deteriorate
if
0.50-1.32
mg
m
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(7), P. e28860 - e28860
Published: March 29, 2024
Protected
areas
are
significant
due
to
the
high
value
of
natural
resources
they
shelter.
This
study's
primary
objective
is
assess
quality
status
water
(13
lakes
and
Tisa
River)
localized
in
protected
area
River
on
territory
Romania.
A
number
13
surface
(Tisa
situated
through
Natura
2000
ecological
network
studied.
The
chemistry
potential
pollution
were
analyzed
by
measuring
analyzing
a
set
twenty
elements
sixteen
physico-chemical
parameters.
impact
anthropogenic
activities
was
settled
applied
analysis
obtained
results.
human
health
risk
noticed.
Results
indicated
that
waters
rich
Ni
Fe
probably
interaction
with
groundwater
Ni.
Waters
characterized
contamination,
which
if
directly
or
food
chain
consumed
could
negatively
influence
health.
Piper
Gibbs
plots
studied
divided
into
three
categories
based
water-rock
interactions:
mixed
Ca2+-Na+-HCO3-,
CaCO3-,
Na+-HCO3-.
Likewise,
indices
(Heavy
metal
Pollution
Index,
HPI
Heavy
Evaluation
HEI)
correlated
As,
amounts.
findings
this
research
imply
influenced
geogenic
origin
emergence
activities.
significance
related
understanding
mechanisms
quality,
improving
conserving
resources,
correspondingly
any
risks
be
identified.
Ecological Indicators,
Journal Year:
2022,
Volume and Issue:
136, P. 108613 - 108613
Published: Feb. 1, 2022
Natural
rivers
have
always
been
invaded
by
multiple
pollutants
discharged
anthropogenic
activities,
inducing
physiochemical
and
biological
changes
to
waterbodies.
However,
the
effects
of
different
types
disturbances
natural
wetlands
on
water
quality
bacterial
communities
in
black-odor
remain
largely
unknown.
In
this
study,
13
parameters
at
48
sampling
sites
along
typical
contaminated
Jishan
River
were
selected
evaluate
through
index
(WQI).
The
analysis
microbial
community
composition
its
correlation
with
(industrial
effluent,
aquacultural
wastewater,
domestic
sewage,
confluences,
dam
wetlands)
further
conducted.
results
revealed
that
had
significant
spatial
heterogeneity
samples
disturbed
sites,
shaped
abundance
distribution
communities.
Among
these
disturbances,
altered
hydrological
hydraulic
conditions
river,
leading
worst
quality,
fermentative
microorganism
Lactococcus
becoming
dominant
genus.
surrounding
terminus
river
recuperative
functions
could
restore
community.
WQI
values
38.08–63.46
rated
as
"low"
or
"moderate"
primarily
affected
excessive
nutrient
contaminates,
such
nitrogen,
phosphorus,
organic
matter.
Random
forest
biomarkers
for
C39,
Trichococcus,
norank_f_norank_o_Chloroplast,
unclassified_f_Enterobacteriaceae.
This
study
not
only
facilitated
a
more
comprehensive
understanding
about
between
ecosystem
but
also
provided
theoretical
support
ecological
restoration
governmental
regulation
ecosystem.
Frontiers in Microbiology,
Journal Year:
2023,
Volume and Issue:
13
Published: Jan. 11, 2023
Introduction
As
the
largest
shallow
freshwater
lake
in
North
China
Plain,
Baiyangdian
is
essential
for
maintaining
ecosystem
functioning
this
highly
populated
region.
Sediments
are
considered
to
record
impacts
of
human
activities.
Methods
The
abundance,
diversity
and
metabolic
pathways
microbial
communities
sediments
were
studied
by
metagenomic
approach
reveal
patterns
mechanism
C,
N,
P
S
cycling
under
threat
eutrophication.
Results
Many
genera,
with
plural
genes
encoding
key
enzymes
involved
genes,
belonging
Proteobacteria
Actinobacteria
which
most
main
phylum
bacterial
community
sediment
S,
processes,
such
as
Nocardioides
(Actinobacteria),
Thiobacillus
,
Nitrosomonas
Rhodoplanes
Sulfuricaulis
(Proteobacteria).For
instance,
abundance
positively
correlated
TN,
EC,
SOC
N/P
ratio
phytase,
regulation
phosphate
starvation,
dissimilatory
sulfate
reduction
oxidation,
assimilatory
reduction,
nitrate
reductive
tricarboxylic
acid
(rTCA)
cycle.
P,
closely
related
citrate
A
complete
while
weaker
sulfur
cycle
between
SO
4
2−
HS
−
might
occur
compared
C
fixation
N
cycling.
In
addition,
ammonia
was
determined
co-occur
denitrification.
Methanogenesis
pathway
methane
metabolism
accounted
highest
proportion
processes.
denitrification
nitrogen
higher
TN
content
than
those
lower
content.
Besides,
nasAB
nirBD
gene
these
pathways.
Discussion
processes
may
have
important
effects
on
transformation.
Hydrology,
Journal Year:
2023,
Volume and Issue:
10(10), P. 196 - 196
Published: Oct. 5, 2023
Research
on
water
quality
is
a
fundamental
step
in
supporting
the
maintenance
of
environmental
and
human
health.
The
elements
involved
analysis
are
multidimensional,
because
numerous
characteristics
can
be
measured
simultaneously.
This
multidimensional
character
encourages
researchers
to
statistically
examine
data
generated
through
multivariate
statistical
(MSA).
objective
this
review
was
explore
research
MSA
between
years
2001
2020,
present
Web
Science
(WoS)
database.
Annual
results,
WoS
subject
categories,
conventional
journals,
most
cited
publications,
keywords,
sample
types
analyzed,
country
or
territory
where
study
conducted
used
analyses
were
topics
covered.
results
demonstrate
considerable
increase
using
studies
last
twenty
years,
especially
developing
countries.
River,
groundwater
lake
studied
types.
In
descending
order,
principal
component
(PCA),
hierarchical
cluster
(HCA),
factor
(FA)
discriminant
(DA)
techniques.
presents
relevant
information
for
choosing
appropriate
methods
analyze
data.
