Acta Limnologica Brasiliensia,
Год журнала:
2024,
Номер
36
Опубликована: Янв. 1, 2024
Abstract:
Aim
We
investigated
the
hypothesis
that
flood
decreases
taxonomic
and
functional
beta
diversity
of
Chironomidae
(Diptera)
larvae
among
floodplain
lakes,
causing
biotic
homogenization.
Methods
collected
benthic
samples
using
a
modified
Petersen
grab
in
18
lakes
period
(March
2011)
drought
(September
Upper
Paraná
River
floodplain.
compared
periods
multivariate
dispersion
analysis
(PERMDISP).
Results
found
similar
between
hydrological
periods.
Conclusions
did
not
find
evidence
homogenization
due
to
pulse.
Our
findings
suggest
other
mechanisms
besides
increasing
connectivity
environmental
similarity
pulse
may
structure
community,
such
as
variation
identity
flood-tolerant
morphospecies
across
lakes.
Desalination and Water Treatment,
Год журнала:
2024,
Номер
317, С. 100013 - 100013
Опубликована: Янв. 1, 2024
The
resource
utilization
of
sheep
dung
from
farming
waste
was
evaluated
in
adsorption
total
phosphorus
(TP).
Four
types
modified
activated
carbon
(SDAC)
were
prepared:
SDAC
without
metal
(SDAC-N),
with
lanthanum
(SDAC-La),
magnesium
(SDAC-Mg),
and
La
Mg
(SDAC-La-Mg).
various
SDACs
prepared
tested
the
TP
wastewater.
main
components
SDAC-La-Mg
surface
MgO
La2O3.
rich
functional
groups
such
as
CC
CO
acquired
a
negative
charge.
At
25
°C
pH
4,
capacity
1.94
mg/g.
Among
four
adsorbents,
exhibited
highest
capacity.
by
followed
secondary
kinetic
Langmuir
isothermal
models,
primarily
through
chemisorption
mechanisms
ion
exchange,
chemical
precipitation,
covalent
bonding.
regenerated,
removal
rate
remained
at
65%
after
three
regeneration
cycles.
ions
combine
carboxylate
to
form
ligand
compounds,
enabling
displacing
-OH
group
on
an
inner
complex.
Thus,
can
be
used
effective
adsorbent
for
wastewater
treatment.
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
33, С. 103465 - 103465
Опубликована: Дек. 3, 2023
The
great
application
potential
of
hydrogel
adsorbent
in
water
treatment
has
been
widely
reported
recent
years.
However,
practical
is
severely
restricted
due
to
the
tedious
preparation
procedures,
high
energy
consumption,
and
environmental
threat
spent
after
adsorption.
To
address
these
challenges,
a
new
method
was
proposed
this
study
prepare
granular
composites
through
one-step
polymerization
induced
phase
separation
(PIPS),
initiated
via
redox
reaction
consisting
with
calcined
oil
shale
semi-coke
(COSSC)
active
ingredients
green
tea
(GT)
at
40
oC.
Then
applied
remove
NH4-N
wastewater,
adsorbing
used
as
medium
for
plant
growth.
exhibited
favorable
swelling
capacity
205
g/g
excellent
adsorption
40.2
mg/g
NH4-N.
Remarkably,
process
achieved
equilibrium
only
within
30
min.
avoid
influence
soil
other
factors,
we
conducted
soilless
cultivation
experiment,
results
showed
that
total
seed
biomass
mung
bean
increased
by
33.69%
adding
1%
hydrogels
into
culture
medium.
Based
on
above
performance,
presented
feasible
idea
offered
promising
strategy
sustainable
utilization
adsorbent.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 26, 2024
Research
programs
on
Biodiversity-Ecosystem
Functioning
(BEF)
and
Food
Web
Structure
(FWS)
have
contributed
to
understanding
the
impact
of
biodiversity
functioning
architecture
ecosystems,
but
interconnectedness
between
these
components
was
seldom
attended
until
recently.
Several
theoretical
hypotheses
predict
an
interconnection
BEF
FWS
were
poorly
independently
evaluated.
We
estimated
63
sink
food
webs
predatory
fish
in
Parana
River,
covering
a
large
gradient
community
richness.
evaluated
available
their
interrelationship
through
path
analyses.
A
well-supported
causal
structure
identified,
supporting
that
species
richness
directly
increased
standing
biomass,
modularity,
intermodular
connection,
whereas
decreased
interaction
strength,
connectance,
nestedness.
direct
positive
effect
modularity
connectance
biomass
indicates
can
determine
BEF.
Richness
promotes
increase
also
decrease
due
decay
with
similar
negative
effects
biomass.
In
this
sense,
relationship
diversity
ecosystem
cannot
be
blind
FWS.
Environmental
homogenization
reduction
functional
may
undermine
conditions
for
modular
webs,
switching
ones
potential
cascading
whole
ecosystem.
Diversity and Distributions,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 1, 2024
Abstract
Aim
The
assembly
of
real‐world
ecological
communities
in
human‐modified
landscapes
is
influenced
by
a
complex
interplay
spatial,
temporal,
environmental
and
invasion
gradients.
However,
understanding
the
relative
importance
these
drivers
their
interactions
shaping
functional
remains
elusive.
Our
study
aimed
to
investigate
influence
on
stream
fish
metacommunity.
Location
Streams
Lake
Balaton
catchment,
Hungary.
Methods
We
analysed
long‐term
(18‐year)
dataset
metacommunity,
focusing
changes
diversity
(Q),
redundancy
(R)
species
dominance
(D).
Ternary
diagrams
were
utilized
decompose
into
Q,
R
D
components
visualize
patterns.
Linear
mixed‐effect
regression
separate
structural
equation
models
employed
identify
significant
D.
Results
Native
exhibited
low
(Q)
but
high
(D),
indicating
convergence
dominance.
Stream
habitat
size,
network
position
associated
physical
chemical
gradients
emerged
as
consistently
R.
Changes
Q
additionally
linked
non‐native
community
properties
subtle
shifts
land
use
within‐stream
characteristics.
Main
Conclusions
findings
suggest
that
both
filtering
interspecies
interactions,
particularly
trait
similarity
between
invaders
natives
shape
metacommunities.
Despite
minimal
temporal
directional
changes,
predominantly
patterns
native
communities,
overshadowing
effects.
underscore
considering
mechanisms
assembly.
Additionally,
joint
application
decomposition
frameworks
with
predictive
modelling
provides
comprehensive
insight
across
communities.
