Water,
Journal Year:
2023,
Volume and Issue:
15(22), P. 3871 - 3871
Published: Nov. 7, 2023
The
CPES
(Channel
Payments
for
Ecosystem
Services)
project
developed
PES
schemes
remunerating
farmers
their
activities
in
improving
water
quality
by
reducing
the
emissions
of
nutrients
(both
nitrogen
and
phosphorus)
or
erosion
from
agricultural
activities.
Catchment-wide
approaches
were
tested
six
case
studies,
ecology,
hydrogeology,
agroeconomy,
law,
farming
expertise
was
combined.
Collaborations
established
with
farmers,
associations,
chambers
agriculture,
local
regional
stakeholders.
One
study
concerned
Lac
au
Duc
(Brittany),
a
reservoir
suffering
recurrent
cyanobacterial
blooms.
Curative
actions
to
control
cyanobacteria
had
limited
success.
main
sources
excess
P
entering
lake
origin
but
varied
between
sub-catchments
according
hydrogeological
characteristics
practices.
Long-term
prevention
possibilities
ameliorate
practices
costs
included
permanent
cover
anti-erosive
hedges.
During
project,
PESs
successfully
applied
ground
protection
supply
companies
as
drinking
has
strong
business
preserve
this
ecosystem
service.
For
recreational
multi-purpose
lakes
reservoirs,
it
remains
difficult
find
financing
meet
monetary
requirements
address
farmer’s
transition
land
management.
Harmful Algae,
Journal Year:
2023,
Volume and Issue:
128, P. 102482 - 102482
Published: Aug. 2, 2023
Rising
atmospheric
CO2
can
intensify
harmful
cyanobacterial
blooms
in
eutrophic
lakes.
Worldwide,
these
are
an
increasing
environmental
concern.
Low
concentrations
of
hydrogen
peroxide
(H2O2)
have
been
proposed
as
a
short-term
but
eco-friendly
approach
to
selectively
mitigate
blooms.
However,
sensitivity
cyanobacteria
H2O2
vary
depending
on
the
available
resources.
To
find
out
how
respond
under
elevated
CO2,
Microcystis
aeruginosa
PCC
7806
was
cultured
chemostats
with
nutrient-replete
medium
C-limiting
and
C-replete
conditions
(150
ppm
1500
respectively).
exposed
high
showed
higher
cell
densities,
biovolumes,
microcystin
contents,
lower
photosynthetic
efficiency
pH
compared
cultures
grown
low
CO2.
Subsamples
were
treated
different
(0-10
mg·L-1
H2O2)
batch
two
light
intensities
(15
100
μmol
photons
m-2·s-1)
response
vitality
monitored
during
24
h.
Results
that
more
resistant
at
than
carbon-limited
conditions.
Both
CO2-adapted
cells
sensitive
light.
Microcystins
(MCs)
leaked
2-10
H2O2,
while
sum
intra-
extracellular
MCs
decreased.
Although
both
lakes
many
factors,
results
imply
it
may
become
difficult
suppress
when
continue
rise.
Toxins,
Journal Year:
2024,
Volume and Issue:
16(5), P. 206 - 206
Published: April 26, 2024
Cyanobacterial
harmful
algal
blooms
(cyanoHABs)
occur
in
fresh
water
globally.
These
can
degrade
quality
and
produce
toxins,
resulting
ecological
economic
damages.
Thus,
short-term
management
methods
(i.e.,
algaecides)
are
necessary
to
rapidly
mitigate
the
negative
impacts
of
cyanoHABs.
In
this
study,
we
assess
efficacy
a
hydrogen
peroxide-based
algaecide
(PAK
