We
examined
the
distribution
patterns
of
Ephemeroptera,
Plecoptera,
and
Trichoptera
functional
feeding
groups
(EPT
FFGs)
in
five
streams
that
drain
semi-urban
landscapes
Tsitsa
River
catchment,
Eastern
Cape
Province
South
Africa.We
undertook
macroinvertebrate
physicochemical
analysis
over
four
seasons
between
2016
2017
at
eight
sites
three
land-use
categories
(Sites
1,
2
3),
representing
an
increasing
gradient
pollution.Five
EPT
FFGs
(shredders,
grazers/scrapers,
predators,
collector-gatherers
collector-filterers)
were
fuzzy
coded
analyzed
using
RLQ
-R
(environmental
characteristics
samples),
L
(taxa
across
samples)
Q
(species
traits)
fourth-corner
analyses.Physicochemical
variables,
including
phosphate-phosphorus,
total
inorganic
nitrogen
temperature,
most
influential
variables
significantly
influenced
River.RLQ
model
revealed
varying
responses
to
pollution.Of
FFGs,
collectors
abundant
study
area,
exhibiting
disparate
disturbances,
with
associated
impacted
phosphate-phosphorus.
On
other
hand,
collector-filterers
decreased
disturbance
exhibited
a
significant
negative
association
temperature.Overall,
this
provides
further
insights
into
environmental
factors
influence
Afrotropical
potential
use
as
indicators
anthropogenic
pollution
tropical
rivers.
Ecologies,
Journal Year:
2024,
Volume and Issue:
5(1), P. 132 - 154
Published: Feb. 28, 2024
This
study
aimed
to
determine
the
impact
of
various
pressures
on
functional
composition
OCH
(Odonata,
Coleoptera,
and
Heteroptera)
in
streams
within
northwest
Rif
region
Morocco.
We
examined
how
traits
respond
human-induced
selected
stream
sites
Morocco’s
northwestern
region.
specimens
were
collected
from
36
using
a
Surber
sampler
with
dimension
20
×
cm
mesh
size
500
µm
over
course
two
years,
2021
2023.
measured
physico-chemical
hydraulic
parameters
such
as
temperature,
pH,
DO,
NO-3.
Sixty-seven
trait
attributes
11
classes
assigned
taxa
at
family
level.
Following
delineation
along
gradient
impacts
area,
we
categorized
7
slightly
impacted
(SISs),
19
moderately
(MISs),
10
heavily
(HISs).
successfully
identified
either
vulnerable
or
tolerant
based
RLQ
models.
Traits
reproductive
cycles
per
year
tegument
respiration,
which
positively
correlated
SISs
model
also
depth
chlorine,
traits.
Crawling
locomotion
full
water
swimming
The
distribution
patterns
revealed
robust
correlation
between
sampling
sites.
Notably,
Nepidae,
Naucoridae,
Corixidae
exhibited
widespread
strong
association
SISs.
On
other
hand,
related
living
macroinvertebrate
food
sources
reproduction
vegetation,
specifically
clutches,
negative
total
dissolved
solids.
Incorporating
into
biomonitoring
programs
allows
for
more
comprehensive
assessment
river
ecosystems.
approach
provides
nuanced
understanding
different
stressors
community
overall
ecological
health.
Diversity and Distributions,
Journal Year:
2025,
Volume and Issue:
31(5)
Published: May 1, 2025
ABSTRACT
Aim
Anthropogenic
effects,
for
example,
urbanisation,
induce
environmental
stressors
that
often
result
in
biodiversity
loss,
with
significant
implications
ecosystem
services.
In
particular,
the
decline
insect
can
reduce
essential
services
such
as
pest
suppression
or
food
web
disruption
urban
areas.
Potentially,
impact
of
urbanisation
may
differ
between
above‐
and
belowground
communities.
This
is
because
two
groups
be
influenced
by
different
abiotic
biotic
factors.
However,
this
remains
unclear
to
date.
Location
Korea.
Methods
We
investigated
consequences
landscape
changes
factors,
increased
temperature,
impervious
surfaces,
building
density,
vegetation
cover,
on
diversity
functional
group
aboveground
insects.
used
sweeping
methods
sample
insects,
while
insects
were
collected
using
sifting
method
Berlese
funnel.
also
data
from
areas
varying
population
densities
analysed
correlational
patterns
degree
richness
abundance.
Results
Despite
levels,
overall
species
abundance
remained
relatively
stable
across
studied
landscapes.
Aboveground
showed
no
relationship
communities
exhibited
declining
Notably,
generalist
specialist
opposite
patterns.
Belowground
predator
suffered
most
herbivorous
increased.
Main
Conclusion
study
highlights
disproportionate
compared
These
findings
inform
development
targeted
conservation
strategies
safeguard
during
planning
initiatives,
promoting
healthy
resilient
ecosystems.
Frontiers in Ecology and Evolution,
Journal Year:
2023,
Volume and Issue:
11
Published: Oct. 16, 2023
Africa
harbours
about
a
third
of
the
world’s
largest
natural
resource
reserves
mineral
such
as
gold
and
diamonds.
These
vast
in
are
essential
to
continent's
development
modern
industrial
society.
However,
these
minerals,
including
gold,
often
illegally
mined
by
locals
which
leads
biodiversity
loss
groundwater
surface
water
contamination.
In
present
study,
we
assess
impact
illegal
mining
(i.e.,
panning)
other
anthropogenic
activities
on
distribution
patterns
macroinvertebrate
traits
River
Chanchaga,
North
central
Nigeria.
Anthropogenic
urban
development,
agricultural
activities,
household
impacting
Chanchaga
stream
sites
samples
We
selected
four
sampling
stations
reaches),
denoting
increasing
disturbance
order;
Station
1
<
2
4
3.
Four
traits,
body
size,
mode
respiration,
locomotion,
shape,
were
categorized
into
19
attributes.
The
trait
attributes
assigned
taxa
using
fuzzy
coding
method.
relative
abundance
study
river
showed
that
very
large
size
(>40–80
mm)
macroinvertebrates
dominated
Stations
while
(>20–40mm)
possessing
an
integument
for
oxygen
diffusion
4.
RLQ
model
medium
(>10–20
mm),
gills
streamlined
spherical
shapes
positively
associated
with
2.
Conversely,
small
(>5–10
sizes,
spiracle:
vegetative
respiration
plant
stems,
climbing
sprawling
locomotion
3
fourth-corner
test
revealed
(<5mm)
sizes
spiracles
at
least
one
following
physico-chemical
variables:
1)
electrical
conductivity
[EC
(μS
cm
−1
)],
2)
biological
demand
[BOD
5
(mg
l
3)
sulphate
),
4)
nitrate
)
5)
phosphate
).
classified
resilient
pollution
our
study.
On
hand,
possess
can
swim
actively
dissolved
deemed
vulnerable
pollution.
Based
findings,
concluded
especially
mining,
alter
and,
turn,
ecological
balance
ecosystem.
To
forestall
further
damage
health
government
should
regulate
miners.
Insects,
Journal Year:
2024,
Volume and Issue:
15(3), P. 166 - 166
Published: Feb. 29, 2024
(1)
Background:
Understanding
the
relationship
between
community
assembly
and
species
coexistence
is
key
to
understanding
ecosystem
diversity.
Despite
importance
of
wood-boring
longhorn
beetles
(Cerambycidae)
in
forests,
factors
affecting
their
population
dynamics,
richness,
ecological
interactions
remain
underexplored.
(2)
Methods:
We
surveyed
cerambycid
plants
within
five
plots
each
across
three
transects
tropical
rainforests
temperate
forests
Yunnan,
China,
known
for
its
rich
biodiversity
varied
elevation
gradients.
explored
a
range
analytical
tools,
including
α-diversity
comparisons,
distance-decay
relationships,
redundancy
analysis,
β-dissimilarity
metrics,
various
neutral
model
analyses.
(3)
Results:
The
results
revealed
stark
contrast
two
forest
types:
hosted
212
Cerambycidae
135
tree
species,
whereas
had
only
16
18
species.
This
disparity
was
attributed
differences
environmental
heterogeneity
dispersal
limitations.
In
pronounced
variability
leads
steeper
relationships
reduced
Cerambycidae,
implying
stronger
constraints
weaker
plant–beetle
associations.
Conversely,
more
homogenous
exhibited
stochastic
processes
that
enhanced
diversity
interactions.
(4)
Conclusions:
Our
findings
underscore
heterogeneity,
limitations,
host-specificity
are
pivotal
shaping
patterns
with
significant
variations
climatic
zones.
Diversity,
Journal Year:
2024,
Volume and Issue:
16(9), P. 513 - 513
Published: Aug. 26, 2024
Recent
anthropogenic
activities
have
escalated
human
exploitation
of
riparian
zones
river
ecosystems,
consequently
diminishing
aquatic
biodiversity.
This
intensification
land
use
is
also
causing
water
quality
degradation
and
changes
in
environmental
factors,
evidenced
by
increased
nutrient
levels
adversely
impacting
the
community
structure
diversity
organisms.
Notably,
Weihe
River
Basin,
largest
tributary
Yellow
River,
has
demonstrated
signs
significant
pressure.
Despite
this,
comprehensive
investigations
examining
effects
land-use
intensity
on
organism
this
watershed
remain
limited.
In
study,
impacts
macroinvertebrate
under
high-intensity
low-intensity
scenarios
within
Basin
were
investigated
through
field
surveys
conducted
during
spring
autumn
seasons.
Our
results
that
areas
exhibited
elevated
concentrations
(e.g.,
total
nitrogen)
compared
to
those
use.
These
significantly
influenced
structure,
reducing
functional
phylogenetic
diversities
watersheds.
Hydrological
factors
(water
depth,
width,
discharge)
a
impact
taxonomic
diversity.
Thus,
understanding
biodiversity
essential
for
ecological
assessments
impacted
watersheds
developing
management
strategies
sustainable
planning
lands
Basin.
