Using individual‐based trait frequency distributions to forecast plant‐pollinator network responses to environmental change
Ecology Letters,
Journal Year:
2024,
Volume and Issue:
27(1)
Published: Jan. 1, 2024
Abstract
Determining
how
and
why
organisms
interact
is
fundamental
to
understanding
ecosystem
responses
future
environmental
change.
To
assess
the
impact
on
plant‐pollinator
interactions,
recent
studies
have
examined
effects
of
change
individual
interactions
accumulate
generate
species‐level
responses.
Here,
we
review
developments
in
using
networks
interacting
individuals
along
with
their
functional
traits,
where
are
nested
within
species
nodes.
We
highlight
these
individual‐level,
trait‐based
connect
intraspecific
trait
variation
(as
frequency
distributions
multiple
traits)
dynamic
communities.
This
approach
can
better
explain
interaction
plasticity,
changes
probabilities
network
structure
over
spatiotemporal
or
other
gradients.
argue
that
only
through
appreciating
such
plasticity
accurately
forecast
potential
vulnerability
follow
this
general
guidance
collect
analyse
high‐resolution
data,
hope
improving
predictions
for
targeted
effective
conservation.
Language: Английский
Plants partition the pollinator niche by depositing pollen on different parts of the pollinator body
PLoS ONE,
Journal Year:
2025,
Volume and Issue:
20(5), P. e0323577 - e0323577
Published: May 12, 2025
Niche
partitioning
of
pollinators
promotes
the
maintenance
high
plant
diversity
in
tropical
environments.
The
role
animal
this
has
been
evaluated
predominantly
at
individual
and
species
levels.
However,
can
carry
pollen
on
different
parts
their
bodies,
potentially
resulting
an
increase
niche
partitioning.
Nonetheless,
studies
loads
body
how
those
patterns
influence
remain
scarce.
Here,
we
1)
measure
pollinator
plants
considering
hummingbird
parts,
2)
explore
contribution
traits
to
plants.
We
used
mist
nets
capture
hummingbirds
southern
Andes
Ecuador,
took
samples
from
bill,
base
forehead,
throat
chest-belly
using
fuchsin-gel.
level
based
all
found
a
given
body-part
by
specialization
metric
(d’)
beta
analysis.
was
higher
when
were
considered
than
level.
positively
related
tarsus
length,
because
trait
is
associated
perching
behavior
longer
contact
times
with
flowers.
In
sum,
show
that
as
result
deposition
body-parts,
which
may
help
explain
coexistence
species-rich
systems
where
many
co-flower
share
pollinators.
Language: Английский
Plant–hummingbird pollination networks exhibit limited rewiring after experimental removal of a locally abundant plant species
Journal of Animal Ecology,
Journal Year:
2023,
Volume and Issue:
92(9), P. 1680 - 1694
Published: May 12, 2023
Mutualistic
relationships,
such
as
those
between
plants
and
pollinators,
may
be
vulnerable
to
the
local
extinctions
predicted
under
global
environmental
change.
However,
network
theory
predicts
that
plant-pollinator
networks
can
withstand
species
loss
if
pollinators
switch
alternative
floral
resources
(rewiring).
Whether
rewiring
occurs
following
in
natural
communities
is
poorly
known
because
replicated
exclusions
are
difficult
implement
at
appropriate
spatial
scales.
We
experimentally
removed
a
hummingbird-pollinated
plant,
Heliconia
tortuosa,
from
within
tropical
forest
fragments
investigate
how
hummingbirds
respond
temporary
of
an
abundant
resource.
Under
hypothesis,
we
expected
behavioural
flexibility
would
allow
use
resources,
leading
decreased
ecological
specialization
reorganization
structure
(i.e.
pairwise
interactions).
Alternatively,
morphological
or
constraints-such
trait-matching
interspecific
competition-might
limit
extent
which
alter
their
foraging
behaviour.
employed
Before-After-Control-Impact
experimental
design
quantified
plant-hummingbird
interactions
using
two
parallel
sampling
methods:
pollen
collected
individual
('pollen
networks',
created
>300
samples)
observations
visiting
focal
('camera
>19,000
observation
hours).
To
assess
rewiring,
individual,
levels
examined
interaction
turnover
gain/loss
H.
tortuosa
removal
caused
some
but
did
not
prompt
large
changes
specialization,
despite
magnitude
our
manipulation
(on
average,
>100
inflorescences
exclusion
areas
>1
ha).
Although
sampled
through
time
showed
modest
increases
niche
breadth
(relative
birds
experience
resource
loss),
these
were
reflected
species-
network-level
metrics.
Our
results
suggest
that,
least
over
short
time-scales,
animals
necessarily
shift
after
losing
food
resource-even
thought
highly
opportunistic
foragers,
hummingbirds.
Given
contributes
theoretical
predictions
stability,
future
studies
should
why
might
expand
diets
extinction.
Language: Английский
On the occurrence of frugivorous behavior by hummingbirds across the Americas
Ornithology Research,
Journal Year:
2024,
Volume and Issue:
33(1)
Published: Dec. 16, 2024
Language: Английский
To rewire or not to rewire: To what extent rewiring to surviving partners can avoid extinction?
Journal of Animal Ecology,
Journal Year:
2023,
Volume and Issue:
92(9), P. 1676 - 1679
Published: Sept. 1, 2023
Abstract
Research
Highlight
:
Leimberger,
K.G.,
Hadley,
A.S.,
&
Betts,
M.G.
(2023).
Plant–hummingbird
pollination
networks
exhibit
minimal
rewiring
after
experimental
removal
of
a
locally
abundant
plant
species.
Journal
Animal
Ecology
,
https://doi.org/10.1111/1365‐2656.13935
.
In
this
paper,
Hadley
and
Betts
(2023)
explore
the
effects
removing
species
on
plant–hummingbird
networks.
They
experimentally
prevented
access
hummingbirds
to
flowers
Heliconia
tortuosa
assessed
subsequent
changes
in
interactions
between
plants
hummingbirds.
Their
main
hypothesis
postulated
that
loss
highly
connected
would
lead
interaction
niche
expansions
by
hummingbirds,
decreasing
individual,
network
specialization.
However,
they
found
overall
structure
plant‐hummingbird
remains
mostly
unaltered,
with
limited
The
contributions
study
can
be
summarized
as
(i)
it
adds
number
manipulative
studies
capacity
rewire
their
following
partners,
importantly,
is
first
from
tropics
vertebrate
pollinators,
for
which
at
appropriate
scales
intrinsically
more
challenging;
(ii)
innovates
evaluating
change
specialization
individual
level,
carried
out
through
pollen
sampling
body
highlights
stability
may
have
been
overestimated
previous
studies,
calling
further
field.
At
same
time,
also
indicated
even
has
an
small
effect
structure.
Thus,
contributes
timely
findings
regarding
ecological
communities
respond
extinctions.
Language: Английский