SSRN Electronic Journal,
Journal Year:
2022,
Volume and Issue:
unknown
Published: Jan. 1, 2022
Determining
biodiversity
responses
to
environmental
change,
such
as
acidification,
is
critical
for
ecosystem
projections
under
future
global
change
scenarios.
Here,
we
analyzed
the
community
compositions
of
phytoplankton,
crustaceans
and
rotifers
in
28
lakes
Adirondack
Park,
USA,
during
1994-2012,
examined
spatiotemporal
trends
their
alpha
beta
diversity
recovery
from
acidification.
For
all
plankton
assemblages,
Shannon
increased
towards
recent
years
high
lake
pH,
there
was
an
increasing
dissimilarity
with
pH
changes.
The
spatial
mean
Bray-Curtis
dissimilarities
across
decreased
over
time
phytoplankton
leading
increase
homogenization.
Such
a
homogenization
cooccurred
however
overall
this
region,
which
contrasts
previous
classic
view
that
mainly
driven
by
loss
species
results
loss.
We
further
observed
lower
temporal
low-pH
rotifers,
but
not
phytoplankton.
Generally,
three
taxonomic
groups
were
primarily
lake-water
ion
variables,
also
constrained
nutrients
climate.
Collectively,
our
show
how
why
vary
space
along
acidification
recovery,
highlight
importance
studies
combined
long-term
monitoring
programs
assessing
disturbed
ecosystems.
Frontiers in Ecology and Evolution,
Journal Year:
2023,
Volume and Issue:
11
Published: March 31, 2023
The
spatial
isolation
gradient
of
communities
and
the
in
species
dispersal
ability
are
recognized
as
determinants
biodiversity
metacommunities.
In
spite
this,
mean
field
models,
spatially
explicit
experiments
were
mainly
focused
on
idealized
arrangements
leaving
aside
combining
role
gradients
metacommunity
processes.
Consequently,
we
have
an
incipient
understanding
real
arrangement
patterns.
We
focus
six
metacommunities
for
which
confident
information
about
water
bodies
is
available.
Using
coalescent
models
null
that
randomize
location
bodies,
estimated
potential
effect
landscape
its
dependence
ability.
At
extremely
low
or
high
abilities,
ponds
does
not
influence
diversity
because
different
equally
affected
by
incoming
dispersal.
intermediate
peripheral
present
a
much
lower
richness
higher
beta
than
central
communities.
Moreover,
from
landscapes
host
more
randomized
landscapes,
result
determined
heterogeneity
geographic
gradient,
mass
effects
systematically
increase
local
decrease
diversity.
However,
patches
only
has
large
importance
processes
at
ensures
access
to
locations
but
limits
isolated
ongoing
reduction
extent
simplification
may
consequently
undermine
support
biodiversity,
something
should
be
explicitly
considered
preserving
restoring
strategies.
The American Naturalist,
Journal Year:
2023,
Volume and Issue:
202(2), P. 140 - 151
Published: March 20, 2023
The
arrival
order
of
species
frequently
determines
the
outcome
their
interactions.
This
phenomenon,
called
priority
effect,
is
ubiquitous
in
nature
and
local
community
structure,
but
we
know
surprisingly
little
about
how
it
influences
biodiversity
across
different
spatial
scales.
Here,
use
a
seasonal
metacommunity
model
to
show
that
patterns
homogenizing
effect
high
dispersal
depend
on
specific
mechanisms
underlying
effects.
When
effects
are
driven
only
by
positive
frequency
dependence,
dispersal-diversity
relationships
sensitive
initial
conditions
generally
hump-shaped
relationship:
declines
when
rates
become
allow
dominant
competitor
exclude
other
patches.
spatiotemporal
variation
phenological
differences
alters
species'
interaction
strengths
(trait-dependent
effects),
local,
regional,
temporal
diversity
insensitive
dispersal,
regardless
numeric
advantage.
Thus,
trait-dependent
can
strongly
reduce
biodiversity,
preventing
homogenization
metacommunities.
Our
results
suggest
an
alternative
mechanism
maintains
regional
without
environmental
heterogeneity,
highlighting
accounting
for
fundamental
understanding
biodiversity.
Ecology Letters,
Journal Year:
2025,
Volume and Issue:
28(3)
Published: March 1, 2025
Community
ecology
remains
focused
on
interactions
at
small
scales,
which
limits
causal
understanding
of
how
regional
and
local
processes
interact
to
mediate
biodiversity
changes.
We
hypothesise
that
species
pool
size
immigration
are
two
altering
the
balance
between
niche
selection
drift
cause
variation
in
plant
diversity.
manipulated
richness
number
seeds
sown
(species
respectively)
into
12
grasslands
across
a
landscape
soil
moisture
gradient.
Greater
smaller
pools
increased
composition
explained
by
gradients
but
resulted
greater
erosion
α-diversity
spatial
β-diversity
over
time.
Our
results
suggest
constraints
colonisation
make
community
assembly
more
variable
help
maintain
diversity
limiting
biotic
homogenisation.
This
study
provides
large-scale
experimental
evidence
contexts
can
alter
relative
importance
fundamental
shaping
change
scales.
Ecological Monographs,
Journal Year:
2025,
Volume and Issue:
95(1)
Published: Feb. 1, 2025
Abstract
Beta
diversity—the
variation
among
community
compositions
in
a
region—is
fundamental
measure
of
biodiversity.
Most
classic
measures
have
posited
that
beta
diversity
is
maximized
when
each
has
distinct,
nonoverlapping
set
species.
However,
this
assumption
overlooks
the
ecological
significance
species
interactions
and
non‐additivity
systems,
where
function
behavior
depend
on
other
community.
Here,
we
introduce
geometric
approach
to
as
hypervolume
embedding
metacommunity.
Besides
considering
compositional
distinctiveness
metrics,
explicitly
incorporates
associations
captures
idea
adding
unique,
species‐rich
metacommunity
increases
diversity.
We
show
our
closely
linked
naturally
extends
previous
information‐
variation‐based
measures.
Additionally,
provide
unifying
framework
for
widely
adopted
extensions
Applying
empirical
data,
address
two
long‐standing
questions
research—the
latitudinal
pattern
effect
sampling
effort—and
present
novel
insights
were
previously
obscured
by
limitations
approaches.
In
sum,
offers
new
complementary
perspective
diversity,
immediately
applicable
existing
holds
promise
advancing
understanding
complex
relationships
between
composition,
ecosystem
functioning,
stability.
The American Naturalist,
Journal Year:
2024,
Volume and Issue:
205(3), P. 342 - 359
Published: Nov. 6, 2024
AbstractThe
metapopulation
concept
offers
significant
explanatory
power
in
ecology
and
evolutionary
biology.
Metapopulations,
a
set
of
spatially
distributed
populations
linked
by
dispersal,
their
community
ecosystem
level
analogs,
metacommunity
meta-ecosystem
models,
tend
to
be
more
stable
regionally
than
locally.
This
fact
is
largely
attributable
the
interplay
spatiotemporal
heterogeneity
dispersal
(the
inflationary
effect).
We
highlight
this
underappreciated
(but
essential)
role
biology,
present
novel
expression
for
quantifying
defining
effect,
provide
mechanistic
interpretation
how
it
arises
impacts
population
growth
abundance.
illustrate
effect
with
examples
from
infectious
disease
dynamics,
including
hypothesis
that
policy
decisions
made
during
COVID-19
pandemic
generated
enhanced
spread
disease.
finish
noting
generates
emergent
processes
at
large
scales
across
many
topics
history
ecology,
as
diverse
natural
enemy-victim
species
coexistence,
conservation
Embracing
complexity
vital
future
research
on
persistence
populations.