Effect of nutrient enrichment on alpha and beta diversity of macroinvertebrate community in a boreal river of northern China
Abstract
Nutrient
enrichment
has
long
been
recognized
as
a
major
threat
to
freshwater
ecosystems.
Mounting
evidence
suggests
that
nutrient
leads
decline
in
the
biodiversity
and
functional
homogenization
of
species,
manifested
alpha
or
beta
diversity
indices.
While
several
studies
have
investigated
effects
on
macroinvertebrates,
comprehensive
analysis
taxonomic,
functional,
phylogenetic
at
levels
remains
relatively
scarce.
Therefore,
data
macroinvertebrate
assemblage
structure
environmental
factors
were
collected
northern
Chinese
rivers
elucidate
response
their
multidimensional
enrichment.
The
results
revealed
most
significant
factor,
an
increase
total
phosphorus
not
only
reduced
evenness
dispersion
within
community
level,
leading
benthic
but
also
enhanced
nested
components
turnover
component
level.
This
shift
resulted
loss
endemic
which
stabilized
structure.
However,
this
community,
composed
universal
markedly
reduces
ecosystem's
resistance
changes.
Additionally,
by
constructing
structural
equation
model,
effect
was
found
be
more
pronounced
than
taxonomic
diversity.
Collectively,
these
findings
provide
valuable
insights
for
integrated
research
conservation
nutrient-enriched
river
Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown
Published: April 1, 2025
Language: Английский