Journal of Applied Ecology,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 24, 2024
Abstract
Protected
areas
form
the
backbone
of
global
conservation
efforts.
Vegetation
is
primary
foundation
for
achieving
goals,
and
soil
seed
banks
a
cryptic
biodiversity
reservoir
recruiting
species
that
may
not
be
represented
in
above‐ground
vegetation.
Unfortunately,
unmanaged
grazing
by
wild
herbivores
has
led
to
vegetation
degradation
semi‐arid
arid
regions.
However,
experimental
evidence
on
long‐term
impacts
largely
lacking.
Here,
with
aim
examining
how
impact
banks,
we
investigated
composition
germinable
three
protected
(Yathong,
Mungo
Boolcoomatta)
along
precipitation
gradient
south‐eastern
Australia.
The
density
richness
increased
increasing
aridity,
which
indicated
regions
an
important
reservoir.
effects
were
strongly
dependent
precipitation.
Wild
disrupted
at
most
site
but
promoted
accumulation
seeds
least
site.
Grazing
was
linked
increase
frequency
introduced
decrease
perennials.
Synthesis
applications
:
Disruption
could
lead
failure
post‐rain
pulses
growth
hamper
efforts
restore
areas.
Therefore,
suppressing
herbivore
numbers
strategy
enhance
bank
reserves
revegetation
Ecological Indicators,
Год журнала:
2024,
Номер
163, С. 112113 - 112113
Опубликована: Май 9, 2024
The
soil
seed
bank
plays
a
key
role
in
vegetation
resilience
under
environmental
disturbances,
and
is
especially
important
for
the
restoration
of
degraded
vegetation.
However,
responsive
dynamics
to
animal
grazing
its
potential
steppe
grassland
remain
unclear.
Here
we
examined
changes
plant
species
diversity
density
both
aboveground
natural
along
an
experimental
gradient
four
intensities
(nil,
light,
moderate
heavy
grazing)
adaptive
management
system
that
ensures
residual
cover
was
always
above
certain
criteria.
typical
dominated
by
Leymus
chinensis,
Stipa
grandis,
Cleistogenes
squarrosa
central
Inner
Mongolia,
China.
We
found
(i)
richness
top
10
cm
layer
increased
with
intensity,
though
5
showed
decrease.
(ii)
Moderate
significantly
decreased
perennial
but
annual
biennial
plants
layer,
which
dominate
layer.
(iii)
Plant
also
so
did
similarity
between
composition
cm.
increase
studied
grassland.
Our
results
provide
reference
basis
region
from
perspective
bank,
suggest
height
controlled
criterion
benefits
thus
re-generation
Nitrogen,
Год журнала:
2024,
Номер
5(2), С. 498 - 508
Опубликована: Май 31, 2024
Seedling
is
a
crucial
stage
in
the
growth
and
development
of
plants,
expansion
persistence
plant
populations
can
be
achieved
through
seed
regeneration.
Sheep
grazing,
fertilization,
light,
soil
moisture,
vegetation
diversity
biomass,
litter
all
have
potential
impacts
on
species
We
measured
diversity,
annual
net
primary
productivity
(ANPP),
litter,
ground
photosynthetically
active
radiation
(PAR),
moisture
alpine
meadows
under
sheep
grazing
nitrogen
addition
treatments,
studied
their
effects
dicotyledonous
seedling
abundance
using
linear
regression
models
(LMs)
structural
equation
(SEMs).
found
that
reduced
ANPP,
increased
PAR,
decreased
moisture.
Fertilization
ANPP
but
had
no
effect
fertilization
both
seedlings,
simultaneously
reduce
while
seedlings.
LMs
showed
rather
than
light
affected
diversity.
SEMs
revealed
indirectly
influenced
regeneration
litter.
Our
research
will
increase
our
understanding
process
grasslands
facilitate
strategies
for
management
protection
grassland.
Biodiversity and Conservation,
Год журнала:
2024,
Номер
33(11), С. 3275 - 3294
Опубликована: Авг. 5, 2024
Abstract
This
study
investigates
within-site
variation
in
the
diversity
and
composition
of
aboveground
vegetation
seed
bank
intensively
managed
wet
grasslands
north-western
Germany,
comparing
field
edges,
margins
interiors.
We
tested
hypothesis
that
unfertilized
buffer
strips
at
edges
function
as
refugia
characteristic
species
even
are
for
silage
production.
In
55
grassland
sites
on
each
marsh
moor
soils,
respectively,
we
conducted
surveys,
analyses
soil
chemical
measurements
edge,
margin
interior
plots,
searched
factors
causing
composition.
The
total
pool
was
small
110
sites,
i.e.
148
107
bank,
demonstrating
severe
impoverishment.
α-diversity
decreased
from
23
(median)
per
200
m
2
edge
to
15
interior,
with
38
occurring
only
edges.
number
conservation
value
very
low
slightly
higher
than
interior.
Soil
P
availability
ca.
30%
lower
conclude
may
help
reducing
nutrient
leaching
high-input
systems,
but
they
have
mostly
lost
their
refugial
phytodiversity
after
decades
intensive
management.
Restoration
efforts
or
green
hay
transfer
richer
source
habitats
needed
promote
biodiversity
field-edge
strips.
Restoration Ecology,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 8, 2024
The
soil
seed
bank
(SSB)
and
microbial
communities
are
among
the
most
crucial
drivers
of
belowground
biodiversity
in
grasslands.
Changes
components
following
protection
from
grazing
were
observed
cold,
semiarid
To
study
these
changes,
samples
taken
an
intensively
grazed
area
exclosure
established
20
years
prior
to
this
study.
In
particular,
changes
such
as
SSB
activities
two
depths
(0–5
5–10
cm)
measured.
Nonmetric
dimensional
scaling
showed
that
after
removal,
had
changed.
density,
richness,
diversity
higher
ungrazed
plots.
increase
density
may
have
been
caused
by
absence
direct
adverse
effects
on
SSB,
like
trampling
plant
consumption,
or
reduced
indirect
effects,
germination
facilitation
canopy
gaps
created
animals.
effect
removal
basal
respiration,
substrate‐induced
urease
activity
was
highly
significant
(
p
<
0.01)
be
due
moisture
exclusion.
biological
parameters
greater
upper
layer
than
deeper
layer.
This
shows
exclusion
can
a
useful
approach
restoring
biodiversity.
Journal of Applied Ecology,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 24, 2024
Abstract
Protected
areas
form
the
backbone
of
global
conservation
efforts.
Vegetation
is
primary
foundation
for
achieving
goals,
and
soil
seed
banks
a
cryptic
biodiversity
reservoir
recruiting
species
that
may
not
be
represented
in
above‐ground
vegetation.
Unfortunately,
unmanaged
grazing
by
wild
herbivores
has
led
to
vegetation
degradation
semi‐arid
arid
regions.
However,
experimental
evidence
on
long‐term
impacts
largely
lacking.
Here,
with
aim
examining
how
impact
banks,
we
investigated
composition
germinable
three
protected
(Yathong,
Mungo
Boolcoomatta)
along
precipitation
gradient
south‐eastern
Australia.
The
density
richness
increased
increasing
aridity,
which
indicated
regions
an
important
reservoir.
effects
were
strongly
dependent
precipitation.
Wild
disrupted
at
most
site
but
promoted
accumulation
seeds
least
site.
Grazing
was
linked
increase
frequency
introduced
decrease
perennials.
Synthesis
applications
:
Disruption
could
lead
failure
post‐rain
pulses
growth
hamper
efforts
restore
areas.
Therefore,
suppressing
herbivore
numbers
strategy
enhance
bank
reserves
revegetation
