How Extreme Droughts Change the Impact of Eutrophic Reservoir on Its Outflow, with Special References to Planktonic Cyanobacteria and Their Secondary Metabolites?
Water,
Journal Year:
2025,
Volume and Issue:
17(1), P. 86 - 86
Published: Jan. 1, 2025
Increasingly
frequent
weather
extremes
induce
changes
in
the
quantity
and
quality
of
surface
waters,
complicating
their
use
resource
management.
These
challenges
are
particularly
relevant
to
dam
reservoirs,
designed
provide
high-quality
water
for
various
recipients.
The
impact
extreme
drought
on
lowland
eutrophic
reservoir–river
systems
remains
poorly
understood.
Our
research
showed
that
effects
droughts,
resulting
a
decrease
level
reservoir
its
outflow,
more
severe
than
those
floods.
During
pressure
increases
because
large
load
cyanobacteria
released
from
reservoir,
conditions
low
river
discharge,
is
not
diluted.
unlike
during
increase
total
biomass
potamoplankton
and,
especially,
responsible
production
toxic
microcystins
was
positively
correlated
with
outflow.
Additionally,
shift
dominant
species
observed,
Planktothrix
agardhii
Microcystis
spp.,
leading
oligopeptide
profile,
including
microcystins.
Language: Английский
Recent Issues and Challenges in the Study of Inland Waters
Water,
Journal Year:
2024,
Volume and Issue:
16(9), P. 1216 - 1216
Published: April 24, 2024
This
paper
addresses
several
important
problems
and
methods
related
to
studies
of
inland
waters
based
on
the
existing
scientific
literature.
The
use
UAVs
in
freshwater
monitoring
is
described,
including
recent
contact
non-contact
solutions.
Due
a
decline
biological
diversity
many
parts
globe,
main
threats
are
described
together
with
modern
method
for
algae
cyanobacteria
utilizing
chlorophyll
fluorescence.
Observed
disturbances
functioning
river
biocenoses
mine
waters’
discharge,
causing
changes
physico-chemical
parameters
sediments,
give
rise
need
develop
more
accurate
assessment
this
phenomenon.
Important
occurring
context
microplastic
detection,
lack
unification,
standardization
repeatability
used,
were
described.
In
conclusion,
results
water
quality
can
be
achieved
by
combining
using
Language: Английский
Aquatic heatwaves increase surface chlorophyll concentrations in experimental and reference lakes
Limnology and Oceanography Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 1, 2025
Abstract
Aquatic
heatwaves
are
increasing
in
frequency,
intensity,
and
duration
worldwide.
While
increases
mean
water
temperatures
linked
to
enhanced
phytoplankton
biomass,
it
is
unclear
how
alter
dynamics
lakes
at
an
ecosystem
scale.
We
investigated
changes
surface
chlorophyll
during
29
summer
between
2008
2019
3
north
temperate
lakes.
These
vary
staining
were
either
references
or
manipulated
with
nutrients
top
predator
additions.
The
manipulations
provided
a
variety
of
nutrient,
grazing,
light
conditions
heatwave
non‐heatwave
conditions.
Surface
concentrations
increased
24
out
heatwaves.
In
the
low‐nutrient
reference
lake
increase
was
57%
while
two
experimental
127%
183%.
Overall,
effects
whole‐lake
experiments
variable
but
still
context
for
possible
patterns
amid
diverse
set
food
web
nutrient
Language: Английский
Anthropogenic impact of lake surface water temperature of lakes: A case study of eleven lakes on the yunnan-guizhou plateau
Haimei Duan,
No information about this author
Kun Yang,
No information about this author
Chunxue Shang
No information about this author
et al.
Ecological Indicators,
Journal Year:
2024,
Volume and Issue:
165, P. 112165 - 112165
Published: May 25, 2024
In
the
past
40
years,
surface
water
temperature
of
lakes
worldwide
has
generally
shown
an
upward
trend,
with
a
significant
spatial
heterogeneity.
Previous
studies
attributed
change
in
lake
to
direct
impact
climate
change.
However,
few
have
explored
potential
additional
anthropogenic
factors,
resulting
incomplete
understanding
influence
on
temperatures.
We
thus
propose
new
method
quantify
lakes.
selected
11
characterized
by
variations
intensity
watershed
urbanization
development
Yunnan-Guizhou
Plateau
China
for
empirical
study,
and
discussed
trend
LSWT
(lake
temperature)
changes
under
impact,
as
well
link
between
these
human
social
policies.
The
research
results
show
that
(1)
mean
annual
rate
due
fluctuates
0.06℃
per
year.
(2)
is
sensitive
activities;
1℃
increase
factors
typically
variation
0.24℃.
(3)
During
three
years
COVID-19
pandemic,
was
significantly
affected
activities.
Language: Английский