Frontiers in Toxicology,
Год журнала:
2024,
Номер
6
Опубликована: Ноя. 26, 2024
Micro
and
nanoplastics
(MNPs)
are
ubiquitous
in
the
environment
have
been
detected
most
ecosystems,
including
remote
regions.
The
class
of
contaminants
under
MNP
umbrella
is
quite
broad
encompasses
variable
polymer
types,
shapes,
sizes.
Fibers
frequently
environment,
followed
by
fragments,
but
still
represent
only
a
small
fraction
laboratory
studies.
Many
toxicity
studies
done
using
polystyrene
microbeads
which
neither
nor
shape
present
environment.
Additionally,
these
virgin
particles
when
majority
pollution
from
secondary
microplastics
weathered
broken
down
over
time.
To
address
data
gaps,
we
exposed
model
fish
Inland
Silverside,
Frontiers in Marine Science,
Год журнала:
2023,
Номер
9
Опубликована: Янв. 31, 2023
Increasing
shares
of
microfibers
are
being
detected
in
environmental
samples
and
a
closer
look
to
identify
the
risk
associated
with
them
using
ecologically
relevant
endpoints,
especially
at
sensitive
early
life
stages,
is
needed.
To
assess
exposure
hazards,
we
used
rope
representative
fiber
types
ubiquitous
coastal
systems,
where
often
most
common
debris
type
found
water
column.
compare
responses
natural
vs.
synthetic
microfibers,
rinsed
“natural”
cotton,
polyester,
polypropylene
(80-150
µm
length,
8-20
width)
created
from
rope.
Larval
juvenile
estuarine
indicator
species
Inland
Silverside
(Menidia
beryllina)
mysid
shrimp
(Americamysis
bahia)
,
respectively,
were
exposed
these
three
microfiber
concentrations
(3,
10,
30
particles/ml)
along
5-25
PSU
salinity
gradient
mimic
conditions.
Behavioral
responses,
growth,
ingestion
measured.
The
cotton
not
digestive
tracts
Silversides,
however,
both
polyester
Silversides’
stomach
gut
lining.
None
shrimps.
Mysids
had
fewer
behavioral
effects
compared
who
responded
more
cotton.
Cotton
exerted
no
effect
on
growth
Silversides
but
did
cause
reduced
mysids
two
lower
salinities.
In
contrast,
identified
have
significant
dose
dependent
behavior
as
well
was
affected
least
one
salinities
low
3
particles/ml.
impacted
organism’s
higher
salinities,
whereas
impacts
This
raises
concerns
for
ecosystems
need
policies
limit
production
outfall
into
aquatic
environment.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 29, 2025
Emerging
pollutants
increasingly
threaten
aquatic
ecosystems
and
human
health.
However,
the
risk
assessment
of
these
is
constrained
by
insufficient
toxicity
data
for
species.
In
this
study,
a
predictive
framework
has
been
established
to
predict
potential
across
16
species,
including
marine
freshwater
species
varying
trophic
levels
simulate
their
sensitivity
distributions
(SSDs).
Machine
learning
analysis
indicated
that
per-
polyfluoroalkyl
substances
(PFASs)
organophosphate
esters
(OPEs)
exhibited
higher
in
compared
The
presence
aromatic
rings
chlorine
substituents
was
associated
with
increased
OPEs,
alkyl
OPEs
showed
positive
correlation
side
chain
length.
Key
parameters
affecting
PFAS
included
length,
substituent
type,
number
ether
bonds.
Additionally,
comprehensive
ecological
framework,
integrating
persistence,
bioaccumulation,
toxicity,
concentration,
developed
evaluate
13
PFASs
6
Bohai
Sea.
Notably,
our
identified
several
compounds,
such
as
perfluorododecanoic
acid,
perfluoro(3,5-dioxahexanoic)
tris(1-chloro-2-propyl)
phosphate,
previously
considered
low
or
nonrisk,
posing
significant
risks
region.
Thus,
offers
robust
tool
advancing
emerging
pollutants.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(5), С. 2224 - 2235
Опубликована: Янв. 24, 2024
Estuarine
environments
are
critical
to
fish
species
and
serve
as
nurseries
for
developing
embryos
larvae.
They
also
undergo
daily
fluctuations
in
salinity
act
filters
pollutants.
Additionally,
global
climate
change
(GCC)
is
altering
regimes
within
estuarine
systems
through
changes
precipitation
sea
level
rise.
GCC
likely
lead
an
increased
use
of
insecticides
prevent
pests
from
damaging
agricultural
crops
their
habitats
mating
seasons
temperatures.
This
underscores
the
importance
understanding
how
insecticide
toxicity
under
different
conditions.
In
this
study,
larval
Inland
Silversides
(Menidia
beryllina)
were
exposed
bifenthrin
(1.1
ng/L),
cyfluthrin
(0.9
or
cyhalothrin
(0.7
ng/L)
at
either
6
10
practical
units
(PSU)
96
h
during
hatching,
with
a
subset
assessed
end
points
relevant
neurotoxicity
endocrine
disruption
by
testing
behavior,
gene
expression
select
suite
genes,
reproduction,
growth.
At
both
salinities,
directly
F0
larvae
hypoactive
relative
controls;
however,
indirectly
F1
hyperactive
control.
could
be
evidence
compensatory
response
environmentally
concentrations
pyrethroids
fish.
Effects
on
development,
expression,
growth
observed.
Overall,
exposure
PSU
resulted
fewer
behavioral
disruptive
effects
those
observed
organisms
PSU.
Limnology and Oceanography Letters,
Год журнала:
2023,
Номер
8(1), С. 1 - 7
Опубликована: Янв. 4, 2023
Freshwater
salinization
is
the
process
of
changing
ion
concentrations
(e.g.,
Na+,
Mg2+,
K+,
Cl−,
CO
3
2
−
,
SO
4
)
relative
to
background
levels
due
human
activities
agriculture,
application
road
de-icing
salts,
water
and
resource
extraction,
climate
change,
sea-level
rise;
Williams
2001;
Cañedo-Argüelles
et
al.
2016).
Although
considerably
less
studied
than
other
environmental
issues
(Cañedo-Argüelles
2020),
widely
accepted
as
presenting
major
challenges
freshwater
coastal
biodiversity
(Cunillera-Montcusí
2022).
Existing
data
research
show
a
clear
rise
in
worldwide
(Dugan
2017;
2020;
Jeppesen
Kaushal
2021),
yet
key
knowledge
gaps
management
remain
complexity
(Kaushal
2018)
prevalence
problem
2020).
Current
literature
has
neglected
provide
unbiased
geographic
coverage
2022),
ecosystem-level
responses
functions
services)
are
rarely
assessed
(Herbert
2015).
Compelling
calls
for
agendas
that
address
need
at
multiple
scales
global,
regional,
local)
well
timed
One
identified
gap
points
networks
researchers
working
together
regional
using
experimental
approaches
identify
impacts
on
biodiversity,
community
salinity
thresholds,
landscape-scale
drivers.
Here,
we
document
results
networked
Global
Salt
Initiative
(GSI)
performed
situ
experiments
lakes
look
impacts:
their
findings
suggest
North
American
European
quality
guidelines
salt
far
too
low
prevent
impacts.
The
further
purpose
this
Special
Issue
(SI)
increasing
lake
area
ecosystem
functioning
from
variety
perspectives.
Salinity
an
important
parameter,
like
temperature
light,
directly
affects
organisms
via
osmotic
stress
(Silver
Donini
2021).
Despite
worldwide,
however,
socioeconomic
perspective,
salts
perhaps
still
viewed
natural
component
ecosystems
with
negligible
(Gorostiza
Saurí
2019).
Moreover,
current
solutions
technically
challenging
expensive
making
seemingly
unavoidable
consequence
many
activities.
We
have
witnessed
substantial
increase
including
some
high
profile
papers
reviews
2018;
Hintz
Relyea
2019;
Arnott
Dugan
Thorslund
2021;
Cunillera-Montcusí
2022;
2022a,b),
scientific
van
Vliet
three
SIs
devoted
topic:
(1)
SI
Philosophical
Transactions
B
(2018)
"Salt
freshwaters:
causes,
ecological
consequences
future
prospects"
2019);
(2)
Water
(coming
2022)
focused
"Salinization
resources:
ongoing
trends"
(Colombani
2022);
(3)
Hydrobiologia
2023)
"Effects
induced
changes
inland
ecosystems,"
edited
by
Jeppesen,
Cañedo-Argüelles,
Entrekin,
Padisák,
Sarma.
What
makes
Limnology
Oceanography
Letters
unique
principal
focus
determining
(as
stated
above).
When
faced
trying
understand
what
happens
when
mixture
ions
interacts
anthropogenically
derived
substances
aquatic
ecosystems,
experts
refer
result
"freshwater
syndrome"
(FSS;
2018).
Like
any
syndrome,
combination
complex
factors
(chemical,
biological,
geological,
environmental,
social)
associated
can
extreme
unsafe
drinking
(Ehmar
Khan
2014;
2016);
mobilized
contaminants
2015;
toxicity
bioaccumulation
co-occurring
pollutants
such
pesticides
(Saranjampour
Hutton
Xing
loss
(James
2003;
Castillo
Hébert
FSS
expected
progress
five
distinct
stages
outlined
here
(this
SI)
first
time
As
inadequate
regulations
(Huling
Hollocher
1972;
Jackson
Jobbàgy
2005;
Gorostiza
Schuler
2022b),
continues
impact
function,
services
sector-specific
withdrawals
regions
world
irrigation
agriculture;
water;
2017).
global
scale
irreconcilable
demands
various
anthropogenic
practices
road-de-icing,
mining)
help
explain
recent
area.
International
teams
recently
published
coordinated
mesocosm
across
regions)
most
urgent
(Hintz
All
guest
editors
part
GSI,
which
began
design
Experiment
(GSE)
conceived
GLEON
(Global
Lakes
Ecological
Observatory
Network)
meeting
Mohonk
(New
York)
2017.
Interdisciplinary
led
Drs
Shelley
William
designed
large-scale,
simultaneous
experiment
was
16
within
Canada
(CA),
Europe
(EU),
United
States
(US)
summer
2018.
under
conditions
lack
direct
pristine
zooplankton,
outside
laboratory
tests.
these
(2022b)
series
six
either
combine
evaluate
cross-regional
(Arnott
or
examine
effects
stressors
communities
base
food
chain
(Moffett
Greco
Astorg
GSE
(i)
complemented
14
selected
known
about
zooplankton
worldwide;
(ii)
predict
trends
increases
America
caused
predominantly
salt;
(iii)
urban
wetlands,
streams,
ponds);
(iv)
increased
land-water
usage
patterns
causing
saltwater
intrusion
nutrient
loadings
marine
areas;
(v)
consider
community-level
syndrome.
contributions
depth
scope
support
GSI's
overarching
paper
explains
how
abundances
will
be
lost
2022b).
Currently,
regulated
through
recommendations
(i.e.,
non-legally
enforced
standards)
based
tests,
total
and/or
chloride
chronic
[Cl−]
120
230
mg
L−1,
respectively).
Addressing
require
more
rigorous
capture
different
mixtures
chemical
cocktails
2016;
Recently,
al.'s
created
heightened
appreciation,
over
2300
comments
69,100
upvotes
New
Reddit
Journal
Science
(NRJS
Such
appreciation
included
investigations
into
microbes
use
energy;
products
affect
ecosystems;
safe
roads,
beet
juice,
gravel
(Finland),
sand.
Without
evidence,
legislative
unlikely.
brief
overview
enhance
probability
change.
finding
our
coordinated,
mesocosm,
(on
communities)
precipitous
biomass
50%
reductions)
below
existing
concentration
CA,
US,
EU
Vitally,
(2022)
showed
abundance
accompanied
fewer
species,
reduced
diversity,
consistent
trophic
shift
algal
(dominance)
all
lakes,
demonstrated
chlorophyll
(Chl
a).
were
unable
link
sensitivity
intraspecific
variation
responses)
original
species
pool
local
conditions.
Yet,
had
robust
responses,
possibly
evolutionary
adaptation
Nonetheless,
even
upper
Cl−
leading
proliferation
algae
released
grazing
pressure.
uniquely
investigated
shifts
fungal
eukaryotic
plankton
DNA
metabarcoding
18
S
rRNA.
They
found
massive
compositional
among
diverse
groups
dominants
unicellular
algae.
Eventually,
combined
favor
cyanobacteria
(Porter-Goff
2013),
but
not
universally
case
wherein
absent
phytoplankton
favored
(Astorg
More
needed.
Examining
interactions
between
nutrients,
(2021)
exposed
mesocosms
ambient
(~
3–4×
ambient),
concluding
although
higher
nutrients
availability,
there
no
concomitant
tolerance
salt.
Temperature
another
variable
interact
salinity,
McClymont
responsive
subjected
stressor.
losses
diversity
GSI
experiments,
Wersebe
only
slight
Daphnia
ephippia
response
suburban
170
years
(with
1
150
L−1)
paleolimnological
study
ephippial
densities
sediments.
This
may
explained
possible
attenuating
calcium
hardness
(Elphick
2011).
However,
needed
previous
studies
soft
water,
boreal
shield
lakes.
Dugan's
group
quantifying
modeling
past
50
In
special
issue,
presents
papers:
Rock
model
distinctive
groundwater
fed
seepage
located
next
highway
Northern
Wisconsin.
By
adjusting
outdated
box
(Bowser
1992)
account
reservoirs
soil,
authors
demonstrate
why
previously
predicted
2020
Sparking
Lake
surpassed
50%,
highlighting
soil
long-term
reservoir
second
paper,
they
Michigan
annually
receives
million
metric
tonnes
main
urbanized
rivers
Grand,
St.
Joseph,
Fox,
Kalamazoo,
Milwaukee
Rivers,
If
continue,
could
reach
L−1
2050,
decrease
reproduction
mortality
Canadian
Shield
Ladwig
investigate
understudied
salinities
stratification
north
temperate
delays
spring
turnover,
prolonged
periods,
column
stability
during
spring,
summer,
winter,
critical
anoxic
hypolimnion
summer.
Impacts
dissolved
extend
muddled
deltas
once
persisted
(Richardson
impacted
ponds,
wetlands
covered
Shattuck
(2022);
Bolotin
Kinsman-Costello
(2022).
Decades
stream
surface
waters
seasonal
hydrologic
variability.
used
Hampshire
streams
insights
high-frequency
sensors
(15-min
intervals)
elucidate
influences
sources
flooding
events.
Chloride
threefold
since
1953
site,
often
exceed
relatively
lax
(230
seasons,
surprisingly
flood
event
reset
up
decade.
predictive
classification
drivers
precipitation,
slope,
salinity),
managers
track
basins
central
western
US.
Predictive
characterizing
globe
reference
tools.
review
syndrome
wetlands.
limits
understanding
wetland
biogeochemical
processing
N
&
P
removal)
service
perform.
Most
focuses
2013;
also
face
severe
mainly
withdrawal—for
consumption—and
(Oude
Essink
2010;
Mahmuduzzaman
Dasgupta
Mabrouk
To
problems
facing
sensitive
dependent
Pacific
beyond,
Dulai
Hawaii
discharge
modify
native
macroalgal
growth
rates,
branching
patterns,
ostensibly
weaken
ensuing
competitive
invasive
macroalgae.
Tidal
marsh
significantly
affected
seawater
intrusion.
Mobilian
(2020)
conducted
multiyear,
field
manipulation
microbial
carbon
cycling
activity
press
rise—than
pulses
episodic
intrusion).
Osburn
employed
implications
happen
mouth
estuaries
toxic
cyanobacterial
blooms,
those
occur
upstream
eutrophic
reservoirs,
encounter
flushed
downstream
ocean.
Their
indicate
magnify
harmful
blooms
mix
ocean
water.
Changes
macroalgae
along
continua
lead
predictable
minimum
intermediate
8
g
L−1;
Olli
a)
nitrogen
measured
indicator
efficiency
(RUE),
functional
redundancy
RUE
likely
lower
competition
grazing).
know
interaction
them
modulate
individual
(Baillard
Thompson
Kefford
call
community-based
tests
rather
single
laboratories
standards
protection
developed.
Results
reported
new
(algal,
bacterial,
fungal)
respond
reductions
abundance,
towards
primary
producers
microbiota.
Regional
differences
intra-
inter-specific
expected,
it
difficult
multistressor
environments.
conclude
better
intensify
change
parts
(Jeppesen
2015),
vary
regionally.
For
example,
receiving
large
inputs
melting
glaciers,
(Garcia-Eidell
search
impacts,
effective
adjust
variability
levels,
additional
contaminant
pressures,
precipitation
patterns)
costly
thank
Jim
Cloern,
Gesa
Weyhenmeyer,
Steven
Perez,
Wiley
editorial
team
vital
judicious
assistance.
reviewers
who
graciously
gave
time,
expertise,
advice
helping
improve
issue
manuscripts.
Initiative,
formed
Network
(GLEON)
held
acknowledge
following
funding
supporting
research,
writing,
editing:
Natural
Sciences
Engineering
Research
Council
(NSERC)
Discovery
Grant
program
(DG
03834-2015
SJM
DG
05143-2016
AMD).
MC
supported
Ramón
y
Cajal
contract
funded
Spanish
Ministry
Innovation
(RYC2020-029829-I).
None
declared.
Sustainability,
Год журнала:
2024,
Номер
16(10), С. 4260 - 4260
Опубликована: Май 18, 2024
Bottlenose
dolphins
(Tursiops
truncatus)
inhabit
waters
across
a
broad
natural
salinity
gradient
and
exhibit
changes
in
skin
condition
based
on
the
quality
of
their
environment.
Prolonged
exposure
to
low
salinities
(≤10–20
ppt)
degenerates
epidermal
barrier
causes
cutaneous
lesions
dolphins,
while
role
high
(>35
lesion
development
remains
unknown.
We
assessed
seasonal
prevalence
three
free-ranging
dolphin
stocks
inhabiting
coastal
Gulf
Mexico
(GoM)
different
(0–30
ppt,
22–35
36+
using
images
bodies.
Lesions
were
documented
44%
photographed
(n
=
432),
occurrence
was
significantly
related
cold
seasons
water
temperatures
but
not
salinity.
Cold
may
heighten
susceptibility
infectious
pathogens
disease
compound
effects
anthropogenic
pollutants
GoM.
As
are
bioindicator
species
marine
habitat
welfare,
studies
assessing
reveal
environmental
degradation
with
potential
impacts
ecosystems
human
health.
Toxics,
Год журнала:
2024,
Номер
12(4), С. 267 - 267
Опубликована: Апрель 2, 2024
Perfluorooctane
sulfonate
(PFOS)
is
a
persistent
contaminant
that
has
been
found
globally
within
the
environment.
Key
data
gaps
exist
in
toxicity
of
PFOS
to
marine
organisms,
especially
estuarine
species
are
crucial
food
web:
fish,
shrimp,
and
mollusks.
This
study
developed
thresholds
for
larval
species,
including
grass
shrimp
(Palaemon
pugio),
sheepshead
minnows
(Cyprinodon
variegatus),
mysids
(Americamysis
bahia),
Eastern
mud
snails
(Tritia
obsoleta).
Multiple
abiotic
stressors
(salinity
temperature)
were
included
as
variables
testing
PFOS.
Acute
96
h
under
standard
test
conditions
25
°C
20
ppt
seawater
yielded
LC50
values
0.919
mg/L
C.
variegatus,
1.375
A.
bahia,
1.559
T.
obsoleta,
2.011
P.
pugio.
The
effects
increased
temperature
(32
°C)
decreased
salinity
(10
ppt)
varied
with
species.
but
was
not
altered
by
salinity.
For
snails,
greater
lower
combination
higher
observed
all
These
demonstrate
expanding
include
wider
range
parameters
will
improve
environmental
risk
assessment
chemical
contaminants,
inhabiting
dynamic
ecosystems.