Applied Water Science,
Journal Year:
2024,
Volume and Issue:
14(7)
Published: June 14, 2024
Abstract
Rivers
and
streams
are
dynamic
linear
features
that
undergo
numerous
disturbances
from
nearby
human
activities.
This
is
particularly
evident
in
Iranian
arid
regions,
where
agricultural
activities
concentrated
along
these
water
bodies
to
harness
their
freshwater
resources.
study
utilized
12
stations
the
Maharlu
stream
network
assess
impact
of
on
its
quality
aquatic
fauna.
Results
indicated
severe
nutrient
pollution
attributed
a
high
mean
nitrate
concentration
(67.77
±
79.72
mg/L).
By
employing
PCA
analysis,
three
main
principal
components
were
extracted,
explaining
variance
82.61%.
PC1
exhibited
positive
loadings
for
dissolved
oxygen
(DO),
while
PC2
showed
an
elevated
salt
concentration.
Midges
non-biting
mosquitoes,
predominantly
Chironomidae
family,
emerged
as
dominant
taxon,
contributing
over
98%
total
species
abundance.
Furthermore,
integrated
PCA–CCA
analysis
revealed
downstream
shifts
composition
toward
more
tolerant
species,
driven
by
decreasing
DO
levels
increasing
concentrations.
These
trends
found
parameters
linked
runoff
carrying
substantial
amounts
fertilizers,
pesticides,
organic
matter
livestock
farming.
Consequently,
there
urgent
need
implement
conservation
measures
mitigate
adverse
effects.
Ecological Indicators,
Journal Year:
2023,
Volume and Issue:
148, P. 110050 - 110050
Published: Feb. 26, 2023
River
ecosystems
are
being
threatened
by
rising
temperatures,
aridity,
and
salinity
due
to
climate
change
increased
water
abstractions.
These
threats
also
put
human
well-being
at
risk,
as
people
rivers
closely
connected,
particularly
in
water-scarce
regions.
We
aimed
investigate
the
relationship
between
biological
physico-chemical
river
quality
using
arid
Draa
basin
a
case
study.
Physico-chemical
measurements,
monitoring
of
aquatic
macroinvertebrates,
household
surveys
were
used
assess
state
water,
ecosystem,
well-being,
well
associations
them.
Salinity
levels
exceeded
maximum
permissible
values
for
drinking
35
%
irrigation
12
sites.
low
flow
associated
with
quality.
Human
satisfaction
quantity
quality,
agriculture,
natural
environment,
overall
life
Middle
Draa,
where
89%
respondents
reported
emotional
distress
scarcity.
Drinking
was
generally
rated
lower
areas
characterized
higher
The
study
found
positive
indices,
but
no
significant
association
these
factors
satisfaction.
findings
suggest
that
physicochemical
is
complex
more
comprehensive
approach
likely
needed
establish
relationships.
Forum Geografi,
Journal Year:
2023,
Volume and Issue:
37(2)
Published: Dec. 29, 2023
The
phenomenon
of
urban
population
growth
is
a
global
concern
which
will
result
in
decrease
the
value
ecosystem
services
an
area.
Sukoharjo
Regency
area
affected
by
development
Surakarta
City;
therefore,
rapid
taking
place.
objective
this
study
to
investigate
interplay
between
urbanization,
services,
and
provision
clean
water
2022.
methods
used
were
calculating
percentage
determine
level
urbanisation,
AHP
overlay
ascertain
service
score,
together
with
cross-tabulation
establish
relationship
these
two
variables.
that
urbanisation
produces
pattern
districts
north
tend
comprise
higher
level.
supply
obtained
results
dominated
low
medium
situation
regarding
reveals
where
increase
reduce
services.
Environmental and Sustainability Indicators,
Journal Year:
2024,
Volume and Issue:
21, P. 100330 - 100330
Published: Jan. 3, 2024
Low-order
streams
contribute
to
the
abiotic
and
biotic
character
of
large
rivers
are
renowned
for
harboring
unique
forms
aquatic
flora
fauna.
However,
most
studies
on
headwater
mainly
focus
mainstems
overlook
contribution
tributary
systems.
Moreover,
low-order
generally
overlooked
in
legislation
bioassessment
programs,
consequently
not
protected
many
countries.
To
recognition
ecological
importance
low-orders
streams,
this
study
focused
determining
whether
river
network
characteristics
associated
physico-chemical
parameters
can
be
used
effectively
predict
variabilities
macroinvertebrate
assemblage
between
first-order
second-order
headwaters
Nzoia
River
Basin,
Kenya.
The
quantified
structural
functional
community
composition,
diversity,
similarity,
richness
communities
two
Dissolved
oxygen,
coarse
particulate
organic
matter,
conductivity,
stream
width,
depth,
discharge
flow
velocity
were
main
predictors
diversity
distribution
macroinvertebrates
first
order
streams.
recorded
higher
abundance
than
Taxa
from
families
Ephydridae,
Elmidae,
Gomphidae,
genera
Euthraulus,
Neoperla,
Orthothrichia
Prosopistoma
limited
sites
while
Ceratopogonidae,
Pisuliidae,
Dytiscidae
genus
Trichosetodes
occurred
exclusively
sites.
Collector-filterers
collector-gatherers
abundant
feeding
groups
(FFGs)
Scrapers
shredders
distinctness
composition
systems
suggests
that
linkages
among
a
as
exemplified
support
foster
biodiversity.
Frontiers in Forests and Global Change,
Journal Year:
2024,
Volume and Issue:
7
Published: June 6, 2024
Vegetation
cover
degradation
is
often
a
complex
phenomenon,
exhibiting
strong
correlation
with
climatic
variation
and
anthropogenic
actions.
Conservation
of
biodiversity
important
because
millions
people
are
directly
indirectly
dependent
on
vegetation
(forest
crop)
its
associated
secondary
products.
United
Nations
Sustainable
Development
Goals
(SDGs)
propose
to
quantify
the
proportion
as
total
land
area
all
countries.
Satellite
images
form
one
main
sources
accurate
information
capture
fine
seasonal
changes
so
that
long-term
can
be
assessed
accurately.
In
present
study,
Multi-Sensor,
Multi-Temporal
Multi-Scale
(MMM)
approach
was
used
estimate
vulnerability
degradation.
Open
source
Cloud
computing
system
Google
Earth
Engine
(GEE)
systematically
monitor
evaluate
potential
multiple
satellite
data
variable
spatial
resolutions.
Hotspots
were
demarcated
using
machine
learning
techniques
identify
greening
browning
effect
coarse
resolution
Normalized
Difference
Index
(NDVI)
MODIS.
Rainfall
datasets
Climate
Hazards
Group
InfraRed
Precipitation
Station
(CHIRPS)
for
period
2000–2022
also
find
rainfall
anomaly
in
region.
Furthermore,
hotspot
areas
identified
high-resolution
major
based
analysis
understand
verify
cause
change
whether
or
nature.
This
study
several
State/Central
Government
user
departments,
Universities,
NGOs
lay
out
managerial
plans
protection
vegetation/forests
India.
Freshwater Biology,
Journal Year:
2025,
Volume and Issue:
70(2)
Published: Feb. 1, 2025
ABSTRACT
The
notion
that
biodiversity
begets
greater
ecosystem
functioning
is
an
enduring
paradigm
in
ecology,
supported
by
a
growing
body
of
research
demonstrating
the
significant
effects
on
(BEF).
These
studies
use
several
diversity
metrics,
which
can
be
estimated
through
taxonomic,
functional
and
molecular
approaches.
Here
we
aim
to
investigate
performance
different
approaches
(taxonomic,
molecular),
considering
metrics
each
approach
(e.g.,
richness,
composition,
among
others).
Additionally,
assess
individual
response
processes
productivity,
decomposition,
others)
approach.
To
this
end,
perform
review
meta‐analysis
assessed
BEF
relationship
continental
aquatic
environments,
encompassing
94
322
effect
sizes.
Our
data
set
includes
diverse
contexts,
with
organisms,
environments
processes.
We
found
overall
positive
association
between
ecosystems
(Effect
size
=
0.37).
also
differences
proportions
applied
approaches,
as
well
some
geographic
bias,
predominance
conducted
northern
hemisphere.
lakes
were
most
commonly
studied
systems,
productivity
functions
frequently
analysed.
approach,
exclusively
microbial
our
dataset,
showed
better
evaluating
relationship.
Despite
strengths
it
not
without
limitations.
Some
challenges
such
high
costs
sequencing
maintaining
database
infrastructure,
hinder
its
application.
In
light
these
limitations,
understand
applying
specifically
richness
evenness
study
promising.
This
alternative
for
continuity
advancement
environments.
highlighted
need
southern
hemisphere,
covering
freshwater
multiple
functions.