Ecosystem Health and Sustainability,
Год журнала:
2024,
Номер
10
Опубликована: Янв. 1, 2024
To
investigate
the
structural
characteristics
and
driving
factors
of
metazooplankton
community
in
cascade
reservoirs
Feiyun
River
Basin,
monitoring
surveys
were
conducted
at
18
sampling
sites
across
different
seasons:
September
2021
(autumn),
January
2022
(winter),
May
(spring),
July
(summer).
These
identified
51
species,
with
highest
species
abundance
observed
summer
lowest
winter.
Notably,
densities
biomasses
peaked
spring,
averaging
13.57
ind./l
(where
stands
for
individuals
per
liter)
0.362
mg/l,
respectively,
while
average
(9.20
ind./l)
(0.262
mg/l)
occurred
winter,
respectively.
Seasonal
variation
had
a
notable
influence
on
composition
metazooplankton,
Rotifera
predominating
autumn,
Copepoda
winter
spring.
Cyclops
larva
Nauplius
consistently
dominated
throughout.
Correlation
analyses
revealed
significant
negative
association
between
richness
Pielou
evenness
indices
phosphate
total
phosphorus
concentrations,
Redundancy
chlorophyll
a,
water
temperature,
phosphorus,
conductivity,
pH,
as
key
environmental
influencing
seasonal
distribution
community.
This
study
provides
preliminary
assessment
dynamics
communities
offering
foundational
insights
evaluating
ecological
health
basin
waters.
Acta Limnologica Brasiliensia,
Год журнала:
2023,
Номер
35
Опубликована: Янв. 1, 2023
Abstract:
Aim
Zooplankton
functional
groups
play
an
important
role
in
lake
functioning
and
can
readily
respond
to
environmental
changes
may
be
associated
with
phytoplankton
changes.
In
warmer
regions,
zooplankton
species
have
a
smaller
body
size,
which
decreases
their
grazing
capacity,
attenuating
top-down
control
throughout
phytoplankton.
We
evaluated
density
biomass
of
relationship
algal
horizontal
reservoir
zonation
(pelagic,
sublittoral,
eulittoral
zones)
the
shallow
reservoir.
hypothesize
that
are
fluctuations
zonation.
Methods
Changes
structure
group
controlling
limnological
variables
were
verified
at
three
sampling
stations:
pelagic,
zones
mesotrophic
Results
distributed
seven
groups.
The
not
clearly
variations
However,
zonation,
where
specific
found
zones.
Conclusions
related
but
due
dominance
small
organisms.
Ecosystem Health and Sustainability,
Год журнала:
2024,
Номер
10
Опубликована: Янв. 1, 2024
To
investigate
the
structural
characteristics
and
driving
factors
of
metazooplankton
community
in
cascade
reservoirs
Feiyun
River
Basin,
monitoring
surveys
were
conducted
at
18
sampling
sites
across
different
seasons:
September
2021
(autumn),
January
2022
(winter),
May
(spring),
July
(summer).
These
identified
51
species,
with
highest
species
abundance
observed
summer
lowest
winter.
Notably,
densities
biomasses
peaked
spring,
averaging
13.57
ind./l
(where
stands
for
individuals
per
liter)
0.362
mg/l,
respectively,
while
average
(9.20
ind./l)
(0.262
mg/l)
occurred
winter,
respectively.
Seasonal
variation
had
a
notable
influence
on
composition
metazooplankton,
Rotifera
predominating
autumn,
Copepoda
winter
spring.
Cyclops
larva
Nauplius
consistently
dominated
throughout.
Correlation
analyses
revealed
significant
negative
association
between
richness
Pielou
evenness
indices
phosphate
total
phosphorus
concentrations,
Redundancy
chlorophyll
a,
water
temperature,
phosphorus,
conductivity,
pH,
as
key
environmental
influencing
seasonal
distribution
community.
This
study
provides
preliminary
assessment
dynamics
communities
offering
foundational
insights
evaluating
ecological
health
basin
waters.
