Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Oct. 18, 2023
Abstract
Beta
diversity
has
been
widely
used
in
studies
to
understand
the
spatial
distribution
patterns
of
species
and
assess
effects
anthropic
impacts
on
aquatic
environments.
Dissimilarity
indices,
such
as
Sorensen
Jaccard,
are
calculate
beta
diversity,
show
differences
their
way
evaluating
valuing
biodiversity
components,
which
result
different
patterns.
Despite
this
variation,
efficiency
performance
measure
environmental
communities
remains
unexplored.
In
study,
we
evaluate
changes
composition
Odonata
adult
Amazonian
streams
using
indices.
The
were
sampling
98
small
two
regions
eastern
Amazon.
We
compared
preserved
altered
each
region
Jaccard
Our
results
that
all
methods
effective
detecting
when
comparing
stream
communities.
However,
index
was
more
able
reflect
these
changes,
possibly
due
its
lower
sensitivity
rare
index.
Even
with
a
subtle
difference
detection
power,
should
consider
it,
especially
less
pronounced,
greater
accuracy
increases
probability
human
actions
natural
Hydrobiologia,
Journal Year:
2023,
Volume and Issue:
unknown
Published: Sept. 21, 2023
Abstract
Ephemeroptera,
Plecoptera
and
Trichoptera
are
three
orders
of
freshwater
macroinvertebrates
with
a
short
terrestrial
adult
life-stage
that
they
use
to
disperse
by
flying
upstream.
This
aerial
dispersal
can
be
assisted
native
riparian
forest,
but
regional
variation
has
not
yet
been
empirically
tested.
In
this
study
we
compared
the
EPT
community
153
sampling
sites
located
in
streams
four
European
regions
(Central
Plains,
Central
Highlands,
Alps,
Iberia).
each
site,
assessed
ability
using
Species
Flying
Propensity
index.
We
also
calculated
deciduous
forest
cover
buffer
several
environmental
stressors
such
as
saprobic
pollution
or
catchment
anthropization.
Finally,
tested
which
these
parameters
have
significant
effect
on
community.
Highlands
Iberia,
share
weak
dispersers
increased
cover,
indicating
positive
EPTs.
Plains
no
was
found.
conclude
depends
landscape
characteristics
species
pool,
considering
communities
is
needed
create
effective
river
management
policies.
Insect Conservation and Diversity,
Journal Year:
2024,
Volume and Issue:
17(6), P. 988 - 1000
Published: June 28, 2024
Abstract
Niche
and
dispersal‐based
processes
govern
freshwater
communities,
such
as
aquatic
insects,
shaping
their
distribution
establishment
in
the
environment.
So,
we
aimed
to
address
relative
influence
of
niche
on
Odonata
diversity
Amazonian
systems,
species
dispersal
functional
traits
longitudinal
latitudinal
ranges.
We
used
Dispersal‐Niche
Continuum
Index
(DNCI)
test
(i)
regions
more
distant
would
present
a
prevalence
processes,
(ii)
different
patterns
come
from
two
suborders;
by
applying
generalised
linear
models,
tested
(iii)
dispersal‐related
suborders
midpoints
species.
found
that
had
lower
values
pairwise
Dispersal–Niche
Continuum,
mainly
for
Zygoptera,
corroborating
our
first
hypothesis.
Moreover,
Zygoptera
also
presented
lowest
absolute
Anisoptera
joint
agreeing
with
second
Only
significant
association
between
midpoints,
third
Our
results
indicated
which
can
be
explained
massive
geographical
barriers,
rivers,
narrow
physiological
ecological
tolerance.
demonstrated
scenario
presence
rivers
may
explain.
A
better
understanding
prevalent
predictors
how
ability
governs
has
conservational
implications.
Water Biology and Security,
Journal Year:
2022,
Volume and Issue:
2(2), P. 100132 - 100132
Published: Dec. 24, 2022
The
advance
of
agricultural
frontiers
and
industrialization
in
Amazonia
has
increased
natural
resource
deterioration,
resulting
degraded
physical
habitat
structure
reduced
local
aquatic
biodiversity.
We
evaluated
the
relative
sensitivities
Biological
Monitoring
Working
Party
(BMWP)
Average
Score
Per
Taxon
(ASPT)
biotic
indexes
based
on
EPT
(Ephemeroptera,
Plecoptera,
Trichoptera)
versus
taxa
richness,
abundance,
Shannon-Wiener
diversity
for
evaluating
anthropogenic
impacts
Amazonian
streams.
expected
that
EPT-BMWP
EPT-ASPT
would
be
more
sensitive
detecting
environmental
changes
stream
biota
than
other
measures.
sampled
32
sites
eastern
distributed
along
an
gradient
from
different
land
use
intensities.
All
biological
metrics
except
were
significantly
responsive
to
pressures;
however,
richness
was
slightly
responsive.
Ambiente e Agua - An Interdisciplinary Journal of Applied Science,
Journal Year:
2024,
Volume and Issue:
19, P. 1 - 14
Published: March 12, 2024
The
Amazon
Rainforest
is
renowned
for
its
extraordinary
biodiversity
and
the
ravages
of
pervasive
deforestation.
removal
natural
vegetation
significantly
affects
Amazonian
streams,
leading
to
alterations
in
their
environmental
conditions.
In
United
States,
Environmental
Protection
Agency
has
devised
a
comprehensive
protocol
monitor
changes
quality
streams.
Since
2011,
Sustainable
Network
implemented
this
Our
systematic
review
aimed
address
following
questions:
i)
How
widely
been
employed
streams?;
ii)
Is
utilization
well-distributed
across
Basin?;
iii)
Which
types
land
use
have
assessed
using
protocol?;
iv)
components
aquatic
biota
studied
conjunction
with
and,
v)
metrics
are
most
crucial
elucidating
distribution?
We
conducted
searches
Web
Science
Google
Scholar
databases,
identifying
34
studies
that
directly
aligned
our
objectives.
It
was
observed
Eastern
had
highest
number
streams
evaluated.
Additionally,
insects
emerged
as
an
effective
tool
when
utilized
alongside
evaluating
impacts
use.
Ultimately,
important
assessing
on
were
shelter
availability
channels,
preservation
status
riparian
forests,
water
quality.
recommend
developing
simplified
version
facilitate
application
research
teams
limited
personnel
financial
resources
available
fieldwork.
Keywords:
conservation,
biomonitoring,
change,
sampling
efficiency,
stream
ecology.
