Ecology Letters,
Journal Year:
2019,
Volume and Issue:
22(11), P. 1957 - 1975
Published: July 21, 2019
Abstract
Many
empirical
studies
motivated
by
an
interest
in
stable
coexistence
have
quantified
negative
density
dependence,
frequency
or
plant–soil
feedback,
but
the
links
between
these
results
and
ecological
theory
are
not
straightforward.
Here,
we
relate
analyses
to
theoretical
conditions
for
stabilisation
classical
competition
models.
By
stabilisation,
mean
excess
of
intraspecific
relative
interspecific
that
inherently
slows
even
prevents
competitive
exclusion.
We
show
most,
though
all,
tests
demonstrating
feedback
constitute
sufficient
two‐species
interactions
if
applied
data
per
capita
population
growth
rates
pairs
species,
none
necessary
two
species.
Potential
inferences
more
limited
when
communities
involve
than
performance
is
measured
at
a
single
life
stage
vital
rate.
then
discuss
approaches
enable
stronger
coexistence‐invasibility
experiments
model
parameterisation.
The
parameterisation
approach
can
be
typical
density‐dependence,
frequency‐dependence,
sets,
generally
enables
better
with
mechanisms
greater
insights,
as
demonstrated
recent
studies.
Ecology Letters,
Journal Year:
2018,
Volume and Issue:
21(9), P. 1319 - 1329
Published: June 25, 2018
Abstract
Theory
predicts
that
intraspecific
competition
should
be
stronger
than
interspecific
for
any
pair
of
stably
coexisting
species,
yet
previous
literature
reviews
found
little
support
this
pattern.
We
screened
over
5400
publications
and
identified
39
studies
quantified
phenomenological
interactions
in
terrestrial
plant
communities.
Of
the
67%
species
pairs
which
both
intra‐
effects
were
negative
(competitive),
was,
on
average,
four
to
five‐fold
competition.
remaining
pairs,
93%
featured
facilitation,
a
situation
stabilises
coexistence.
The
difference
between
tended
larger
observational
experimental
data
sets,
field
greenhouse
studies,
population
growth
full
life
cycle
rather
single
fitness
components.
Our
results
imply
processes
promoting
stable
coexistence
at
local
scales
are
common
consequential
across
Ecological Monographs,
Journal Year:
2018,
Volume and Issue:
88(3), P. 277 - 303
Published: April 15, 2018
Abstract
We
give
a
comprehensive
review
of
Chesson's
coexistence
theory,
summarizing,
for
the
first
time,
all
its
fundamental
details
in
one
single
document.
Our
goal
is
both
theoretical
and
empirical
ecologists
to
be
able
use
theory
interpret
their
findings,
get
precise
sense
limits
applicability.
To
this
end,
we
introduce
an
explicit
handling
limiting
factors,
new
way
defining
scaling
factors
that
partition
invasion
growth
rates
into
different
mechanisms
contributing
coexistence.
explain
terminology
such
as
relative
nonlinearity,
storage
effect,
growth‐density
covariance,
formal
setting
through
biological
interpretation.
theory's
applications
contributions
our
current
understanding
species
While
very
general,
it
not
well
suited
problems,
so
carefully
point
out
limitations.
Finally,
critique
paradigm
decomposing
stabilizing
equalizing
components:
argue
these
concepts
are
useful
when
used
judiciously,
but
have
often
been
employed
overly
simplified
justify
false
claims.
Ecological Monographs,
Journal Year:
2017,
Volume and Issue:
87(3), P. 470 - 486
Published: April 19, 2017
Abstract
Although
observations
of
species‐rich
communities
have
long
served
as
a
primary
motivation
for
research
on
the
coexistence
competitors,
majority
our
empirical
and
theoretical
understanding
comes
from
two‐species
systems.
How
much
observed
in
results
indirect
effects
among
competitors
that
only
emerge
diverse
systems
remains
poorly
understood.
Resolving
this
issue
requires
simple,
scalable,
intuitive
metrics
quantifying
conditions
multispecies
systems,
how
these
differ
those
expected
based
solely
pairwise
interactions.
To
achieve
aims,
we
develop
structural
approach
studying
set
parameter
values
compatible
with
n
‐species
given
geometric
constraints
imposed
by
matrix
competition
coefficients.
We
derive
novel
mathematical
analogous
to
stabilizing
niche
differences
fitness
measure
range
coexistence,
incorporating
interactions
emerging
show
measures
can
be
used
quantify
extent
which
allow
apply
method
field
system
annual
plants.
conclude
presenting
new
challenges
opportunities
coexistence.
Ecology Letters,
Journal Year:
2018,
Volume and Issue:
22(1), P. 3 - 18
Published: Oct. 11, 2018
Understanding
long-term
coexistence
of
numerous
competing
species
is
a
longstanding
challenge
in
ecology.
Progress
requires
determining
which
processes
and
differences
are
most
important
for
when
multiple
operate
differ
many
ways.
Modern
theory
(MCT),
formalised
by
Chesson,
holds
out
the
promise
doing
that,
but
empirical
applications
remain
scarce.
We
argue
that
MCT's
mathematical
complexity
subtlety
have
obscured
simplicity
power
its
underlying
ideas
hindered
applications.
present
general
computational
approach
extends
our
previous
solution
storage
effect
to
all
standard
spatial
temporal
mechanisms,
also
process-defined
mechanisms
amenable
direct
study
such
as
resource
partitioning,
indirect
competition,
life
history
trade-offs.
The
main
components
method
partition
population
growth
rates
into
contributions
from
different
their
interactions,
numerical
calculations
some
removed
others
retained.
illustrate
how
handles
features
not
been
analysed
framework
through
several
case
studies:
diatom
under
fluctuating
temperature,
plant-soil
feedbacks
grasslands,
facilitation
beach
grass
community,
niche
with
independent
effects
on
recruitment,
survival
sagebrush
steppe.
Journal of Ecology,
Journal Year:
2018,
Volume and Issue:
106(5), P. 1902 - 1909
Published: Feb. 26, 2018
Abstract
Understanding
the
role
of
competition
in
structuring
communities
requires
that
we
quantify
competitive
ability
a
way
permits
us
to
predict
outcome
over
long
term.
Given
such
clear
goal
for
process
has
been
focus
ecological
research
decades,
there
is
surprisingly
little
consensus
on
how
measure
ability,
with
up
50
different
metrics
currently
proposed.
Using
population
dynamics
as
foundation,
define
ability—the
one
species
exclude
another—using
quantitative
theoretical
models
isolate
key
parameters
are
known
outcomes.
Based
definition
identify
empirical
requirements
and
describe
straightforward
methods
quantifying
future
studies.
In
doing
so,
our
analysis
also
allows
why
many
existing
approaches
studying
unsuitable
ability.
Synthesis
.
Competitive
precisely
defined
starting
from
dynamics.
Quantifying
theoretically
justified
manner
using
experimental
designs
readily
applied
studies
laboratory
field.