African Journal of Ecology,
Journal Year:
2023,
Volume and Issue:
62(1)
Published: Oct. 17, 2023
Abstract
In
fast‐flowing
streams,
caddisfly
larvae
are
responsible
for
processes
that
collectively
determine
the
efficiency
with
which
detritivore
community
is
able
to
decompose
autochthonous
and
allochthonous
detritus.
This
ecosystem
function
ensures
high
water
quality
represents
a
precious
service
resident
rural
communities.
The
analysis
of
δ
13
C
15
N
in
eight
taxa
from
mid‐mountain
stream
evidenced
remarkable
complementarity
their
feeding
preferences.
An
aquatic
moth
mimicking
caddis
mode
life
was
also
included
survey
its
niche
appeared
be
between
one
taxa.
Moderate
overlap
interpreted
terms
low
functional
redundancy,
implying
case
reduction
diversity,
no
taxon
could
perfect
substitute
another,
loss
efficiency.
Low
redundancy
caused
by
segregation
due
avoidance
competition/interference
broad
range
described
this
study
warns
against
attributing
single
Trichoptera
as
group,
or
even
families.
These
results
contribute
still
poorly
known
distribution
East
African
caddisflies
characterisation
preferences
Afrotropical
trichopteran
larvae.
Chemistry and Ecology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 21
Published: Dec. 1, 2024
This
study
aims
to
assess
the
vulnerability
and
tolerance
levels
of
macroinvertebrate
functional
feeding
groups
(FFGs)
in
forested
streams
draining
urban
areas
Niger
Delta.
It
contributes
our
understanding
how
human
activities
affect
freshwater
ecosystems.
Between
2008
2012,
we
conducted
monthly
measurements
physicochemical
variables
collected
macroinvertebrates.
We
categorised
sampling
sites
into
three
based
on
disturbance
levels:
least
impacted
(LIS),
moderately
(MIS),
heavily
(HIS).
Multivariate
(RLQ)
analysis
was
used
visualise
associations
among
across
sampled
sites,
revealing
distinct
relationships
between
certain
FFGs
different
sites.
The
RLQ
model
constructed
showed
that
grazers
collector-filterers
were
predominantly
observed
LIS,
suggesting
their
environmental
stressors.
Conversely,
predators
shredders
more
prevalent
(MIS
HIS),
indicating
disturbances
such
as
elevated
nitrate
higher
water
temperatures.
fourth
corner
graph
highlighted
differing
responses
variables,
with
showing
positive
correlations
several
factors
but
no
significant
association
phosphate
levels.
Overall,
these
findings
importance
considering
assessing
health
integrity
aquatic
African Journal of Ecology,
Journal Year:
2023,
Volume and Issue:
62(1)
Published: Oct. 17, 2023
Abstract
In
fast‐flowing
streams,
caddisfly
larvae
are
responsible
for
processes
that
collectively
determine
the
efficiency
with
which
detritivore
community
is
able
to
decompose
autochthonous
and
allochthonous
detritus.
This
ecosystem
function
ensures
high
water
quality
represents
a
precious
service
resident
rural
communities.
The
analysis
of
δ
13
C
15
N
in
eight
taxa
from
mid‐mountain
stream
evidenced
remarkable
complementarity
their
feeding
preferences.
An
aquatic
moth
mimicking
caddis
mode
life
was
also
included
survey
its
niche
appeared
be
between
one
taxa.
Moderate
overlap
interpreted
terms
low
functional
redundancy,
implying
case
reduction
diversity,
no
taxon
could
perfect
substitute
another,
loss
efficiency.
Low
redundancy
caused
by
segregation
due
avoidance
competition/interference
broad
range
described
this
study
warns
against
attributing
single
Trichoptera
as
group,
or
even
families.
These
results
contribute
still
poorly
known
distribution
East
African
caddisflies
characterisation
preferences
Afrotropical
trichopteran
larvae.
