Elton's
biotic
resistance
hypothesis
predicts
that
biodiversity
can
resist
the
establishment
of
invasive
plants.
However,
whether
and
how
within-species
diversity
mediates
impacts
successfully
established
invaders
is
poorly
understood,
particularly
in
face
climate
change.
We
used
an
experimental
system
to
test
effect
intraspecific
a
native
foundation
species,
Scirpus
mariqueter,
on
soil-legacy
global
plant
invader,
Spartina
alterniflora,
under
well-watered
drought
conditions.
found
more
diverse
populations
buffered
against
negative
invader
plant.
This
was
due
complementarity
triggered
by
invader-shaped
soil
biota,
emerged
both
Compared
with
previous
finding
reduce
performance
through
feedbacks,
this
study
provides
further
evidence
it
helps
mitigate
soil-derived
invader.
These
findings
together
emphasize
need
for
management
measures
promote
restore
changing
world.
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 22, 2024
Abstract
Semi-arid
ecosystems
offer
very
limited
resources
to
plants,
but
they
are
inhabited
by
incredibly
diverse
communities
of
winter
annual
plants.
Ecological
theory
suggests
that
a
high
degree
specialization
in
resource
use
and
interactions
among
plants
soil
fungi
may
explain
the
coexistence
ecologically
similar
species
such
communities.
Species-specific
variation
net
outcome
(positive
vs
negative)
plant-soil
interactions,
lead
mean
fitness
differences
thus
increasing
opportunities
coexistence.
Few
studies
tested
how
(water
nutrients)
combination
with
affect
plants’
fundamental
niche
across
life
stages.
We
experimentally
germination
under
different
combinations
water,
nutrients
treatments,
using
six
degrees
mycorrhizal
dependence.
Germination
success
four
out
was
reduced
absence
fungi,
this
response
more
severe
for
obligate
species.
Presence
ameliorated
production
plant
biomass
especially
water
or
nutrients,
corroborating
findings
beneficial
alleviate
abiotic
stress.
This
strong
dependent
species,
highly
variable
non-mycorrhizal
likely
due
species-specific
outcomes
pathogenic
fungi.
suggest
important
symbionts
reduce
increase
seed
dormancy,
favoring
temporal
partitioning
while
via
equalizing
processes.
Elton's
biotic
resistance
hypothesis
predicts
that
biodiversity
can
resist
the
establishment
of
invasive
plants.
However,
whether
and
how
within-species
diversity
mediates
impacts
successfully
established
invaders
is
poorly
understood,
particularly
in
face
climate
change.
We
used
an
experimental
system
to
test
effect
intraspecific
a
native
foundation
species,
Scirpus
mariqueter,
on
soil-legacy
global
plant
invader,
Spartina
alterniflora,
under
well-watered
drought
conditions.
found
more
diverse
populations
buffered
against
negative
invader
plant.
This
was
due
complementarity
triggered
by
invader-shaped
soil
biota,
emerged
both
Compared
with
previous
finding
reduce
performance
through
feedbacks,
this
study
provides
further
evidence
it
helps
mitigate
soil-derived
invader.
These
findings
together
emphasize
need
for
management
measures
promote
restore
changing
world.
