Sedimentary ancient DNA reveals the impact of anthropogenic land use disturbance and ecological shifts on fish community structure in small lowland lake
The Science of The Total Environment,
Год журнала:
2024,
Номер
922, С. 171266 - 171266
Опубликована: Фев. 28, 2024
Язык: Английский
The effect of seismic air gun shots on physiology and behaviour of fish lake communities
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Апрель 26, 2025
Alterations
in
the
acoustic
environment
owing
to
anthropogenic
sound
are
recognised
as
global
pollution
and
strengthening
studies
freshwater.
This
study
focuses
on
impact
of
lake
seismic
surveys
fish.
First,
we
measured
individual
stress
responses,
i.e.
cortisol
levels
oxidative
stress,
morphological
parameters,
stomach
contents
juvenile
roaches
(Rutilus
rutilus)
captured
by
trawling
prior
during
survey.
Second,
using
hydroacoustics,
analysed
fish
school
behaviour
before,
during,
after
shots.
We
collected
environmental
DNA
(eDNA)
concentrations
three
species
assess
their
littoral
refuge.
Finally,
assessed
pelagic
density
demonstrated
that
shots
noticeably
impacted
roaches,
from
molecular
cellular
level
characteristics.
During
shots,
changes
characteristics
were
observed.
At
onset
survey,
a
sharp
decrease
(>
30%)
was
observed,
no
increase
area
noted
for
species.
These
responses
suggest
disturbances
due
air
gun
affect
multiple
ways
(physiology,
morphology,
behaviour,
habitat
use)
across
biological
scales.
Язык: Английский
Reconstructing historical fish occurrence and documenting human-mediated introductions in lakes using sedimentary DNA
Global Ecology and Conservation,
Год журнала:
2024,
Номер
54, С. e03040 - e03040
Опубликована: Июнь 21, 2024
The
recovery
of
DNA
preserved
in
the
sediment
aquatic
systems
(sedDNA)
has
provided
short-term
and
long-term
data
on
biological
groups
(e.g.,
bacteria,
phytoplankton,
zooplankton,
fishes)
advanced
our
understanding
how
environmental
changes
have
affected
communities.
Here,
we
demonstrate
use
fish
sedDNA
from
lake
cores
reconstructing
history
occurrences
four
lakes
within
Oil
Sands
region
Alberta,
Canada.
A
general
eight
targeted
qPCR-based
eDNA
assays
for
freshwater
species
(cisco,
whitefish,
northern
pike,
chain
pickerel,
burbot,
rainbow
trout,
walleye)
were
rigorously
designed
validated.
Utilizing
these
assays,
detected
several
spanning
over
a
century,
which
aligned
with
conventional
surveys
historical
records
human-mediated
introductions.
greater
temporal
resolution
into
faunal
records,
bridging
knowledge
gap
that
spanned
100-
to
150-year-old
data.
present
study
also
allowed
documentation
introductions
populations
examined
lakes.
These
findings
can
be
used
refine
native
ranges
clarify
influence
diversity
lakes,
providing
essential
baseline
conservation
management
impact
assessments.
Язык: Английский
Socioecological Resilience: Quantitative Assessment of the Impact of an Invasive Species Assemblage on a Lake Ecosystem
Resources,
Год журнала:
2024,
Номер
13(10), С. 132 - 132
Опубликована: Сен. 25, 2024
An
invasive
assemblage
refers
to
a
group
of
species
that
coexist
and
interact
within
an
ecosystem,
significantly
altering
its
dynamics,
biodiversity,
functions,
ecosystem
services.
Their
presence
in
lakes
can
severely
affect
these
ecosystems.
The
objective
this
article
is
present
assessment
using
indexes
socioecological
resilience
the
impact
two
(P.
clarkii
E.
crassipes)
lake
Fúquene
Lagoon
Colombia.
Socioecological
(rating
scale:
0.0–100%)
are
developed
based
on
community
perception
area
influence
under
study.
Indexes
for
each
dimension
analysis
(ecological,
social,
economic)
include
global
index.
Community
obtained
through
survey
according
dimensions
analysis.
results
comprehensive
suggest
significant
vulnerability
ecological
(index
=
37.7%)
social
40.9%)
assemblage.
low-risk
limited
implementation
preventive
measures
accentuate
fragility.
Although
economic
shows
greater
robustness
56.9%),
it
imperative
strengthen
adaptive
capacity
system
mitigate
adverse
impacts
biological
invasions
ensure
sustainability
(global
index
45%).
Assessing
ecosystems’
recovery
from
requires
multidimensional
approach,
focusing
ecological,
economic,
factors
develop
integrated
management
strategies
sustainability.
Язык: Английский