A
expansão
de
áreas
pastagens
e
cana-de-açúcar
no
Brasil
segue
um
modelo
produção
agrícola
que
tem
uma
forte
dependência
insumos
agroquímicos,
como
fertilizantes
agrotóxicos,
ameaçam
constantemente
a
qualidade
dos
ecossistemas
aquáticos.Nesta
pesquisa,
os
efeitos
do
manejo
solo
em
extensivas
(PE),
intensivas
(PI)
culturas
(C)
foram
avaliados
estudo
campo
escala
realista
partir
monitoramento
treze
mesocosmos
aquáticos
inseridos
nos
tratamentos
PE,
PI
C
durante
392
dias.O
recomendado
para
cada
das
foi
simulado,
preparação
solo,
aplicação
fertilizantes,
agrotóxicos
(2,4-D,
fipronil)
vinhaça,
bem
pastagem
gado.Os
impactos
três
na
água
considerando
dimensões:
1)
disponibilização
nutrientes
metais
ecossistêmicos
aquáticos;
2)
ecotoxicológicos
utilizando
o
cladócero
Ceriophania
silvestrii
bioindicador
aquático,
dicotiledônea
Eruca
sativa
fitotoxicidade
água,
díptero
Chironomus
sancticaroli
sedimento;
3)
Avaliação
risco
ecológico
perda
serviços
associadas
essas
áreas.Os
resultados
obtidos
demonstraram
acarretaram
deterioração
da
com
redução
pH
oxigênio
dissolvido
ao
longo
tempo
aumento
concentrações
fósforo,
nitrogênio,
potássio,
alumínio
manganês,
especialmente
após
vinhaça
cana-deaçúcar.A
presença
2,4-D
(<
97
µg
L
-1
)
fipronil
0,21
capazes
alterar
fecundidade,
sobrevivência
fêmeas
taxa
intrínseca
população
C.
C;
germinação
crescimento
parte
aérea
E.
sativa.Para
sancticarolli,
não
observadas
mudanças
significativas
mortalidade,
comprimento
corpo,
biomassa
fresca
peso
seco
livre
cinzas,
deformidades
mentum.O
maior
PI,
nessa
ordem,
comparação
tratamento
associado
concentração
pelo
agrotóxico
aos
alumínio,
manganês
Esses
potenciais
ecossistêmicos,
biodiversidade.Esperase,
conclusão
desta
auxiliar
identificação
fatores
associados
às
práticas
adotadas
cana-de-
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
289, P. 117633 - 117633
Published: Jan. 1, 2025
The
presence
of
pharmaceuticals
in
the
aquatic
environment
is
increasing
due
to
their
growing
use
for
human
health.
Although
most
studies
are
based
on
short
exposures
these
contaminants,
present
study
has
emerged
from
need
organisms
over
a
long-term
exposure
understand
any
multi-generational
chronic
effects
and
alterations
regarding
habitat
selection.
Therefore,
this
shows:
(1)
ability
Daphnia
magna
colonize
environments
contaminated
with
caffeine,
ibuprofen
fluoxetine,
(2)
effect
reproduction
selection
(under
two
scenarios:
without
food)
after
period
three
generations.
It
was
observed
that
caffeine
shortened
time
between
generations
caused
an
increase
number
neonates
per
female.
opposite
ibuprofen:
reach
third
F3
generation
double
when
compared
those
exposed
caffeine.
Fluoxetine
did
not
alter
reproduction,
nor
repellent/attractive
daphnids.
In
tests,
cultivated
clean
water
preferred
compartment
highlighting
its
attractive
effect.
Caffeine
also
daphnids
colonization
test.
Apart
this,
no
chemical
showed
or
repulsive
absence
food
during
tests.
Our
findings
show
some
could
cause
distribution
patterns,
significant
species.
underlining
importance
studying
contamination
by
exposure.
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
291, P. 117673 - 117673
Published: Feb. 1, 2025
The
continuous
discharge
of
agrochemicals
used
in
intensive
agriculture
contaminates
aquatic
systems,
harming
biota
and
their
processes.
Although
mobile
organisms
can
avoid
exposure
by
moving
to
less-affected
habitats,
capacity
be
altered
pollutant
exposure.
Populations
with
a
previous
disturbance
history,
which
show
lower
ability
respond
subsequent
stressors,
are
defined
as
vulnerable.
Therefore,
this
study
investigated
the
so
far
unknown
escape
vulnerable
zooplankton
population
previously
exposed
contaminated
environment.
To
end,
agrochemically
driven
vulnerability
was
induced
populations
Daphnia
magna
sublethal
concentrations
glyphosate.
Vulnerability
verified
using
starvation
test
significant
differences
were
observed
between
control
history.
Both
Control
Vulnerable
assessed
for
avoidance
exposing
them
glyphosate
gradient
Heterogeneous
Multiple-Habitat
Assay
System
(HeMHAS).
showed
rapid
reaction
from
beginning
assay,
rates
increasing
over
24
h,
while
unable
habitats
up
h.
we
concluded
that
have
habitats.
In
heterogeneously
is
responsible
differential
spatial
distribution
affected
species,
impacts
ecosystem
structure.
Additionally,
its
effect
on
behaviour
may
affect
functioning
through
populations.
Journal of Agricultural and Food Chemistry,
Journal Year:
2024,
Volume and Issue:
72(27), P. 15151 - 15163
Published: June 28, 2024
Flupyradifurone
(FPF)
is
considered
the
latest
generation
of
neonicotinoid
insecticides.
Here,
we
investigated
toxicity
and
ecological
risk
FPF
its
aerobic
transformation
products
(TPs)
to
aquatic
species
using
method
prediction.
We
found
that
exhibited
moderate
or
high
some
species.
The
5%
hazardous
concentration
was
3.84
μg/L
for
organisms.
obtained
91
TPs
FPF,
almost
half
fish
