Drivers of recovery and degradation of riverine benthic invertebrate communities: a Germany-wide analysis
Ecological Processes,
Год журнала:
2025,
Номер
14(1)
Опубликована: Март 14, 2025
Abstract
Background
The
global
freshwater
biodiversity
crisis
has
led
to
widespread
implementation
of
measures
counteract
environmental
degradation
and
loss.
While
these
efforts
aim
foster
recovery,
intensifying
stressors
continue
drive
complex
biotic
responses,
the
trajectories
drivers
which
are
insufficiently
understood.
This
study
examines
roles
abiotic
stressors,
interactions
(e.g.,
competition),
land
use
in
shaping
ecological
status
changes
across
Germany,
using
data
from
1599
river
sites
sampled
at
least
twice
between
2004
2022.
Results
Changes
emerged
as
most
consistent
status,
explaining
substantial
variation
(
R
2
=
0.39)
similar
slopes
for
recovery
β
−
0.11)
0.10).
Biotic
interactions,
particularly
interspecific
competition,
also
influenced
0.11),
with
stronger
positive
effects
observed
during
2.99)
compared
1.59).
Land
varied
by
context:
Streams
catchments
higher
cropland
or
urban
areas
showed
greater
likelihood
whereas
streams
forested
were
more
prone
degradation.
These
results
highlight
interplay
factors
driving
processes
Conclusion
findings
emphasize
critical
role
improving
water
quality
enhancing
rivers,
while
demonstrating
importance
context
dynamics.
Integrating
insights
into
management
restoration
can
enhance
ecosystem
resilience
face
escalating
pressures.
Язык: Английский
Longitudinal Distribution of Benthic Macroinvertebrates Related to River Ecological Quality
Limnological Review,
Год журнала:
2025,
Номер
25(1), С. 8 - 8
Опубликована: Март 14, 2025
Macroinvertebrates
of
the
Venta
River
have
been
studied
since
beginning
20th
century.
However,
complex
studies
along
from
Latvian–Lithuanian
border
to
its
mouth
into
Baltic
Sea
irregular
and
fragmentary.
The
aim
this
study
was
assess
ecological
status
analyze
abundance
fauna
composition
macroinvertebrates
entire
length
river
in
territory
Latvia.
This
is
first
kind
for
examining
specialization
sediment
substrates
their
functional
feeding
groups.
Within
framework
study,
importance
assessed
10
sampling
sites
together
with
quality
using
several
indices.
results
show
that
dominated
by
benthic
invertebrate
collectors/gatherers,
active
filterers,
grazers,
scrapers
adapted
particular
type
sediments
formed
silt,
macrophytes,
rocks,
pebbles.
Different
indices
were
calculated
order
River.
According
saprobity
index,
water
corresponds
β-mesosaprobity,
while
mostly
average;
however,
according
multimetric
indices,
varies
poor
high
depending
on
station.
Язык: Английский
Global thermal tolerance of freshwater invertebrates and fish
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 11, 2024
Abstract
Scientists
have
investigated
the
thermal
tolerance
of
organisms
for
centuries,
yet
field
has
not
lost
relevance
as
environmental
threats
pollution
and
global
change
sharpen
need
to
understand
vulnerability
in
landscapes
increasingly
subjected
multiple
stressors.
Freshwater
fish
especially
invertebrates
are
greatly
underrepresented
recent
large-scale
compilations
tolerance,
despite
importance
freshwater
habitats
a
crucial
resource
biodiversity
havens.
This
inspired
us
create
database
these
that
includes
literature
from
1900
until
present
day
sourced
five
languages
counteract
geographic
bias,
395
tests
conducted
with
additional
stressors
present.
The
contains
over
5000
records
800
species,
including
452
invertebrates,
providing
valuable
test
hypotheses
on
risks
future
environments,
how
might
stressor
scenarios.
Язык: Английский
Transferability of stream benthic macroinvertebrate distribution models to drought-related conditions
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 2, 2024
Abstract
Freshwater
ecosystems
increasingly
face
pressures
from
climate
change
induced
extreme
events,
like
droughts,
posing
significant
threats
to
biodiversity.
While
Species
Distribution
Models
(SDMs)
serve
as
vital
tools
for
predicting
species
responses
environmental
shifts,
their
transferability
novel
conditions,
especially
during
and
after
drought
remains
poorly
understood.
In
this
study,
we
delve
into
the
of
SDMs
freshwater
macroinvertebrates
drought-free
drought-influenced
conditions.
We
examine
how
sensitive
is
traits
such
tolerance
scores
according
distribution
along
longitudinal
gradients,
well
used
modelling
method.
constructed
validated
in
a
central
German
catchment
under
conditions
using
four
different
algorithms
(Generalised
linear
models;
GLM,
Spatial
Stream
Networks;
SSN,
Random
Forests;
RF,
Maximum
Entropy;
MaxEnt).
then
projected
these
models
influenced
by
drought,
obtained
computing
difference
accuracy
when
(AUCgap).
Our
findings
reveal
marked
reduction
SDM
illustrating
challenges
accurately
distributions
results
show
slightly
better
SSN
RF.
addition,
observed
that
can
be
tolerance,
with
tolerant
presenting
higher
AUCgap
(i.e.
lower
transferability).
Furthermore,
found
were
modelled
SSNs,
was
reduced.
study
underscores
limitations
capturing
advocates
integrating
ecologically
relevant
predictors
methods
account
stream
connectivity
allow
robust
predictions.
These
considerations
could
enhance
ability
effectively
estimate
impacts
events
on
Язык: Английский