Overlooked eDNA contamination in human-influenced ecosystems: a call to manage large-scale false positives in biodiversity assessments
Water Biology and Security,
Год журнала:
2025,
Номер
unknown, С. 100374 - 100374
Опубликована: Фев. 1, 2025
Язык: Английский
Exploring technical improvements for environmental nucleic acids-based biodiversity assessment and management in coastal ecosystems
Journal of Environmental Management,
Год журнала:
2025,
Номер
377, С. 124724 - 124724
Опубликована: Фев. 27, 2025
Язык: Английский
No attenuation of fish and mammal biodiversity declines in the Guiana Shield
The Science of The Total Environment,
Год журнала:
2025,
Номер
971, С. 179021 - 179021
Опубликована: Март 1, 2025
Real-time
biodiversity
monitoring
should
provide
more
resolved
data
to
quantify
shifts
in
ecological
communities
progressively
altered
by
anthropogenic
disturbances.
Identifying
trends
requires
a
rapid
and
efficient
inventory
method
that
enables
the
collection
delivery
of
high-resolution
within
short
intervals.
Using
aquatic
environmental
DNA
(eDNA),
we
investigated
spatiotemporal
changes
fish
mammal
along
Maroni
River
French
Guiana.
We
compared
spatial
between
two
years,
separated
four-year
interval,
during
which
an
increase
disturbances
was
observed.
To
evaluate
changes,
examined
impact
these
on
both
taxonomic
functional
diversity.
Our
findings
revealed
that,
while
did
not
result
major
decline,
it
continued
drive
alterations
community
richness.
Communities
underwent
their
structure,
with
experiencing
decline
extreme
traits,
lost
redundancy
generalist
functions
experienced
reduction
strategies.
In
context
small-scale
disturbances,
highlight
necessity
long-term,
short-interval
capture
reorganisation
under
stress.
Язык: Английский
Monitoring Atlantic Salmon (Salmo salar) Smolt Migration in a Large River System Using Environmental DNA
Environmental DNA,
Год журнала:
2025,
Номер
7(2)
Опубликована: Март 1, 2025
ABSTRACT
Effective
monitoring
strategies
are
key
for
aquatic
species
conservation,
but
traditional
methods
often
require
significant
resources,
especially
in
large
systems.
The
emergence
of
quantitative
environmental
DNA
(eDNA)
is
a
promising
alternative.
Yet,
few
studies
have
evaluated
the
possibility
quantifying
Atlantic
salmon
abundance
with
eDNA
when
individuals
at
low
and
occur
river
In
this
study,
we
tested
efficacy
to
monitor
quantify
daily
variation
smolt
counts
during
their
downstream
migration
system
smolts.
During
2021
2022
migrations,
trap
nets
were
used
conduct
census
smolts
Romaine
Puyjalon
rivers
(Québec,
Canada)
while
samples
collected
over
transect
perpendicular
riverbank.
Using
real‐time
qPCR,
showed
that
discharge‐corrected
concentrations
positively
correlated
both
years.
addition,
found
controlling
temperature
precipitation
improved
model
transferability
between
years,
showing
importance
considering
correlates
using
quantification.
Finally,
on
same
day,
not
1
or
2
days
prior,
highlighting
capacity
track
fluctuations
abundance.
Our
results
underscore
potential
systems
hydrology
conditions
documented.
Язык: Английский
Parameterizing the particle size distribution of environmental DNA provides insights into its improved availability from the water
Environmental Monitoring and Assessment,
Год журнала:
2025,
Номер
197(5)
Опубликована: Апрель 8, 2025
Язык: Английский
Spatial dispersal of environmental DNA particles in lentic and marine ecosystems: An overview and synthesis
Ecological Indicators,
Год журнала:
2025,
Номер
174, С. 113469 - 113469
Опубликована: Апрель 15, 2025
Язык: Английский
Utilizing aquatic environmental DNA to address global biodiversity targets
Опубликована: Апрель 27, 2025
Язык: Английский
Identifying Key Environmental Drivers of Reach‐Scale Salmonid eDNA Recovery With Random Forest
Environmental DNA,
Год журнала:
2024,
Номер
6(5)
Опубликована: Сен. 1, 2024
ABSTRACT
Environmental
DNA
(eDNA)
sampling
from
rivers
has
emerged
as
a
promising
new
method
for
monitoring
freshwater
organisms
of
management
concern.
However,
eDNA
cannot
yet
offer
reliable
estimates
target
species'
abundance/biomass
or
confident
determinations
absence
river
segment.
To
unlock
these
abilities—and
thereby
greatly
improve
tool
decision‐making—the
influence
local
environmental
factors
on
fate
must
be
better
understood.
At
nine
sites
across
the
central
California
coast,
we
added
known
quantity
novel
(Brook
Trout,
Salvelinus
fontinalis
)
and
collected
at
sequential
downstream
distances
qPCR
analysis.
We
then
used
random
forest
modeling
to
identify
most
important
reach‐scale
(≤
200
m)
outcomes
characterize
salmonid
fate.
Our
final
model
identified
six
outcomes,
including
five
(discharge,
catchment
calcium
oxide
content,
average
depth
cross‐section,
presence
pools,
impervious
cover
watershed)
one
factor
regarding
our
experimental
design
(the
number
technical
replicates).
results
highlight
notable
effects
cross‐sectional
area,
turbulence,
geology
fate,
suggest
discharge
pools
useful
proxies
evaluating
site's
favorability
recovery.
Язык: Английский