Assembly Graph as the Rosetta Stone of Ecological Assembly
Published: Aug. 2, 2024
Ecological
assembly---the
process
of
ecological
community
formation
through
species
introductions---has
recently
seen
exciting
theoretical
advancements
across
dynamical,
informational,
and
probabilistic
approaches.
However,
these
theories
often
remain
inaccessible
to
non-theoreticians,
they
lack
a
unifying
lens.
Here,
I
introduce
the
assembly
graph
as
an
integrative
tool
connect
emerging
theories.
The
visually
represents
dynamics,
where
nodes
symbolize
combinations
edges
represent
transitions
driven
by
introductions.
Through
lens
graphs,
review
how
processes
reduce
uncertainty
in
random
arrivals
(informational
approach),
identify
graphical
properties
that
guarantee
coexistence
examine
class
dynamical
models
constrain
topology
graphs
(dynamical
quantify
transition
probabilities
with
incomplete
information
(probabilistic
approach).
To
facilitate
empirical
testing,
also
methods
decompose
complex
into
smaller,
measurable
components,
well
computational
tools
for
deriving
graphs.
In
sum,
this
math-light
progress
aims
catalyze
research
towards
predictive
understanding
assembly.
Language: Английский
Sparse positive and negative weak interactions drive plant species performance in a diverse community
Authorea (Authorea),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 3, 2024
With
many
species
interacting
in
nature,
determining
which
describe
community
dynamics
is
nontrivial.By
applying
a
new
Bayesian-sparse
modelling
approach
to
an
extensive
field
survey,
we
assessed
the
importance
of
interactions
from
con-and
hetero-specific
plants,
pollinators,
and
insect
herbivores
on
plant
performance.We
compared
inclusion
interaction
effects
as
aggregate
"generic"
terms
versus
specific
terms.We
found
that
continuum
positive
negative
interactions,
containing
mostly
generic
but
few
strong
was
sufficient
variation
performance.While
with
conspecifics
varied
weakly
positive,
heterospecific
plants
mainly
promoted
competition
pollinators
facilitated
plants.The
consistency
these
empirical
findings
over
three
years
suggests
broad
resolution,
including
guilds
groups
rather
than
all
pairwise
high-order
can
accurately
performance
across
natural
communities.
Language: Английский