Urbanisation and agricultural intensification modulate plant–pollinator network structure and robustness
Functional Ecology,
Journal Year:
2024,
Volume and Issue:
38(3), P. 628 - 641
Published: Jan. 24, 2024
Abstract
Land
use
change
is
a
major
pressure
on
pollinator
abundance,
diversity
and
plant–pollinator
interactions.
Far
less
known
about
how
land‐use
alters
the
structure
of
networks
their
robustness
to
coextinctions.
We
analysed
sampled
in
12
landscapes
along
an
urbanisation
agricultural
intensity
gradient,
from
early
spring
late
summer
2021,
used
stochastic
coextinction
model
correlate
risk
with
network
(species
network‐level
metrics)
landscape
context.
Networks
intensively
managed
(i.e.,
urban)
had
lower
initiating
cascade,
while
may
be
robust.
Network
modulated
frequency
severity
coextinctions
species
loss,
strength
interactions
increased
robustness.
Urban
were
more
rich
symmetrical
due
high
ornamental
plants,
smaller,
tightly
connected
nested
networks.
extinctions,
which
was
decreased
by
greater
linkage
density,
interaction
asymmetry
dependence
networks,
once
extinction
occurred,
nestedness
density
propagated
degree
cascade
loss.
At
level,
inversely
correlated
risk,
implying
that
generalist
number
specialists
lowest
risk.
An
interplay
between
affects
community
implications
for
pollination
services
plant
reproduction.
Land‐use
or
other
global
pressures
reorganising
can
alter
communities
potential
functioning.
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free
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this
article
Journal
blog.
Language: Английский
The effect of elevation, latitude, and plant richness on robustness of pollination networks at a global scale
Arthropod-Plant Interactions,
Journal Year:
2024,
Volume and Issue:
18(3), P. 389 - 401
Published: April 8, 2024
Language: Английский
Honey bees (Apis mellifera) modify plant-pollinator network structure, but do not alter wild species’ interactions
PLoS ONE,
Journal Year:
2023,
Volume and Issue:
18(7), P. e0287332 - e0287332
Published: July 13, 2023
Honey
bees
(Apis
mellifera)
are
widely
used
for
honey
production
and
crop
pollination,
raising
concern
wild
pollinators,
as
may
compete
with
pollinators
floral
resources.
The
first
sign
of
competition,
before
changes
appear
in
pollinator
abundance
or
diversity,
be
to
interactions
plants.
Such
a
community
can
measured
by
looking
at
metrics
resource
use
overlap
plant-pollinator
interaction
networks.
Studies
bee
effects
on
networks
have
usually
not
distinguished
whether
alter
interactions,
if
they
merely
total
network
structure
adding
their
own
interactions.
To
test
this
question,
we
experimentally
introduced
Canadian
grassland
varying
distances
from
the
hives.
We
found
that
increased
plant
functional
complementarity
decreased
evenness.
However,
constructed
just
did
affect
any
calculated.
Thus,
all
structural
full
(including
interactions)
were
due
only
bee-plant
causing
pollinator-plant
Given
widespread
increasing
bees,
it
is
important
establish
communities.
Our
results
suggest
foraging
patterns
system,
even
year
was
drier
than
20-year
average.
Language: Английский
Anthropogenic intensification on plant-pollinator interactions over four decades in Chile: a spatiotemporal assessment
Regional Environmental Change,
Journal Year:
2025,
Volume and Issue:
25(2)
Published: March 13, 2025
Language: Английский
Island-wide removal of honeybees reveals exploitative trophic competition with strongly declining wild bee populations
Current Biology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 1, 2025
High
densities
of
managed
honeybees
(Apis
mellifera)
can
threaten
wild
bees
through
exploitative
competition,
thus
leading
to
population
declines
the
latter.
Although
reviews
have
outlined
key
steps
demonstrate
these
impacts-measuring
resource
overlap,
changes
in
bee
behavior,
and
trends-studies
that
comprehensively
address
aspects
are
virtually
absent.
We
were
granted
access
entire
protected
island
Giannutri
(2.6
km2)
apiary
(18
hives)
located
there
during
early
phase
coexistence
between
bees.
Using
as
an
open-air
laboratory,
we
experimentally
manipulated
honeybee
pressure
by
closing
hives
on
selected
days
peak
foraging
period.
In
plants
most
visited
pollinators,
even
short-term
removals
(11
h
per
day)
increased
nectar
volume
(∼60%)
pollen
availability
(∼30%).
absence
honeybees,
target
(Anthophora
dispar
Bombus
terrestris)
became
dominant
insect-plant
visitation
network,
potential
apparent
competition
significantly
decreased.
Accordingly,
both
species
intensified
their
activity
suction
time,
a
recognized
proxy
for
quantity
probed
nectar,
terrestris
also
shortened
time
searching.
Transect
monitoring
revealed
alarming
∼80%
decline
over
4
years,
consistent
with
monopolization
floral
resources,
reducing
pollinators
altering
budget.
These
findings
underscore
risks
introducing
high
into
areas
emphasize
need
rigorous
preventive
ecological
assessments.
Language: Английский
Introduced honey bees (Apis mellifera) potentially reduce fitness of cavity-nesting native bees through a male-bias sex ratio, brood mortality and reduced reproduction
Frontiers in Bee Science,
Journal Year:
2025,
Volume and Issue:
3
Published: May 19, 2025
Introduction
In
Australia,
as
well
many
other
regions
of
the
world,
European
honey
bees
Apis
mellifera
are
an
introduced
species
and
may
harm
native
bee
fauna
by
competing
with
them
for
food
resources.
Field
studies
have
revealed
negative
associations
between
abundance,
but
whether
this
translates
to
fitness
costs
is
unclear.
Methods
Using
drilled
wooden-block
trap
nests,
we
evaluated
abundance
associated
parameters
(number
provisioned
cells
per
nest,
offspring
number,
mortality
rate,
sex
ratio,
body
size)
cavity-nesting
over
2
years.
We
also
conducted
palynological
analyses
measure
pollen
resource
overlap
evaluate
impacts
fitness.
Results
discussion
Greater
was
a
male-biased
ratio
in
progeny
across
years
increased
rate
first
year.
Most
non-significant
were
directions
predicted
from
adversely
impacting
year,
greater
morphospecies
fewer
cells.
conclusion,
demonstrated
that
potential
harmful
consequences
Language: Английский
Plant-pollinator meta-network of the Kashmir Himalaya: Structure, modularity, integration of alien species and extinction simulation
Flora,
Journal Year:
2022,
Volume and Issue:
298, P. 152197 - 152197
Published: Nov. 25, 2022
Language: Английский
Native flora receive more visits than exotics from bees, especially native bees, in an urbanised biodiversity hotspot
Pacific Conservation Biology,
Journal Year:
2023,
Volume and Issue:
30(1)
Published: June 6, 2023
Context
Identifying
floral
resources
preferred
by
bee
assemblages
is
important
for
their
conservation.
Aims
Here,
I
assess
the
association
of
flowering
plant
community
composition,
with
that
honey
bees
and
native
abundance
diversity.
investigate
flower
preferences
in
terms
origin
(native
or
exotic),
evaluate
niche
breadth,
introduced
taxa.
also
consider
if
habitat
influences
these
patterns.
Methods
This
was
evaluated
through
recording
visitation
urbanised
region
south-west
Western
Australian
Floristic
Region
seven
bushland
remnants
residential
gardens
over
2
years.
Key
results
Both
visited
more
than
exotic
flora,
however
a
higher
proportion
flora
bees.
The
10-most
plants
were
exclusively
native,
whereas
bees,
although
predominantly
species,
this
selection
included
species.
Niche
breadth
broader
remnants,
indicating
greater
range
remnants.
Honey
families
gardens.
With
increased
abundance,
associated
expanding
which
may
be
response
to
reduce
competition.
Flower
preference
patterns
often
differed
between
habitats,
foraging
mediated
context.
Conclusion
Native
are
have
relatively
restricted
preferences,
especially
compared
Implications
High
proportions
needed
support
diverse
urban
areas.
Language: Английский
Quantitative Methods for the Monitoring and Evaluation of Vegetation Survey Data
IntechOpen eBooks,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 14, 2024
This
chapter
reviews
a
range
of
analytical
tools
available
to
the
vegetation
scientist,
together
with
nature
raw
data
which
inform
choice
and
optimisation
survey
protocols.
In
context
big
influential
mass
media,
interpretation
communication
such
analyses
are
often
pivotal.
Vegetation
collected
for
objectives
varying
from
land
management
ecological
research,
conceptualized
either
as
central
subject
interest
or
an
independent
habitat
variable.
Several
powerful
quantitative
methods
hand,
widely
applicable
other
subjects
sharing
standard
dataframe
format.
The
development
open
source
coding
languages,
recent
advances
in
computational
power,
have
revolutionized
analyst’s
toolkit.
Language: Английский
Biodiverse Management of Perennial Flower Margins in Farmland: Meandering Mowing by ‘Three-Strip Management’ to Boost Pollinators and Beneficial Insects
Insects,
Journal Year:
2024,
Volume and Issue:
15(12), P. 953 - 953
Published: Nov. 30, 2024
Agricultural
intensification
has
led
to
significant
declines
in
beneficial
insect
populations,
such
as
pollinators
and
natural
enemies,
along
with
their
ecosystem
services.
The
installation
of
perennial
flower
margins
farmland
is
a
popular
agri-environmental
scheme
mitigate
these
losses,
promoting
biodiversity,
pollination,
pest
control.
However,
outcomes
can
vary
widely,
recent
insights
into
an
agricultural
context
suggest
that
management
could
be
important
contributor
this
variation.
This
study
evaluated
two
mowing
regimes:
the
new
“three-strip
management”
method
uneven,
curved
lines
regular
phased
control
method.
During
third
year
application,
we
effects
on
alpha
diversity
indices
well
plant–pollinator
visitation
networks.
Curved
three-strip
significantly
increased
abundance
all
pollinator
groups
(+44%)
enemies
(+50%),
taxonomic
richness
pollinators,
especially
for
rarer
solitary
bees.
Floral
was
also
higher,
more
unique
plants
blooming
early
spring
late
summer,
generating
interactions
(+54%)
positive
impact
multiple
network-level
properties.
Our
findings
provide
evidence
nature-based
methods
win–win
solution,
creating
high-quality
habitats
enhance
various
groups,
support
associated
services,
help
restore
overall
biodiversity.
Language: Английский