Conservation Biology,
Год журнала:
2020,
Номер
35(4), С. 1309 - 1320
Опубликована: Ноя. 25, 2020
Abstract
Species
distribution
models
(SDMs)
are
increasingly
used
in
conservation
and
land‐use
planning
as
inputs
to
describe
biodiversity
patterns.
These
can
be
built
different
ways,
decisions
about
data
preparation,
selection
of
predictor
variables,
model
fitting,
evaluation
all
alter
the
resulting
predictions.
Commonly,
true
species
is
unknown
independent
verify
which
SDM
variant
choose
lacking.
Such
uncertainty
concern
planners.
We
analyzed
how
11
routine
complexity,
predictors,
bias
treatment,
setting
thresholds
for
predicted
values
altered
priority
patterns
across
25
species.
Models
were
created
with
MaxEnt
run
through
Zonation
determine
rank
sites.
Although
variants
performed
well
(area
under
curve
>0.7),
they
produced
spatially
predictions
solutions.
Priorities
most
strongly
by
not
address
or
apply
binary
values;
on
average
40%
35%,
respectively,
grid
cells
received
an
opposite
ranking.
Forcing
high
complexity
solutions
less
than
forcing
simplicity
(14%
24%
values,
respectively).
Use
fewer
records
build
choosing
alternative
treatments
had
intermediate
effects
(25%
23%,
Depending
modeling
choices,
areas
overlapped
little
10–20%
baseline
solution,
affecting
top
bottom
priorities
differently.
Our
results
demonstrate
extent
model‐based
quantify
relative
impacts
building
decisions.
When
it
uncertain
what
best
approach
plan
is,
solving
considering
alterative
options
important
those
that
change
plans
most.
Ecology and Evolution,
Год журнала:
2022,
Номер
12(2)
Опубликована: Фев. 1, 2022
The
influence
of
climate
on
the
distribution
taxa
has
been
extensively
investigated
in
last
two
decades
through
Habitat
Suitability
Models
(HSMs).
In
this
context,
Worldclim
database
represents
an
invaluable
data
source
as
it
provides
worldwide
surfaces
for
both
historical
and
future
time
horizons.
Thousands
HSMs-based
papers
have
published
taking
advantage
1.4,
first
online
version
repository.
2017,
2.1
was
released.
Here,
we
evaluated
spatially
explicit
prediction
mismatch
at
continental
scale,
focusing
Europe,
between
HSMs
fitted
using
from
versions
(between-version
differences).
To
aim,
simulated
occurrence
probability
presence-absence
across
Europe
four
virtual
species
(VS)
with
differing
climate-occurrence
relationships.
For
each
VS,
upon
uncorrelated
bioclimatic
variables
derived
three
grid
resolutions.
factor
combination,
attaining
sufficient
discrimination
performance
independent
test
were
projected
under
current
conditions
various
scenarios,
importance
scores
single
computed.
failed
accurately
retrieving
relationships
climate-tolerant
VS
one
occurring
a
narrow
combination
climatic
conditions.
Under
climate,
noticeable
between-version
emerged
most
these
VSs,
whose
suitability
mainly
depended
diurnal
or
yearly
variability
temperature;
differently,
differences
more
clustered
toward
areas
showing
extreme
values,
like
mountainous
massifs
southern
regions,
VSs
responding
to
average
temperature
precipitation
trends.
chosen
emission
scenarios
Global
Climate
did
not
evidently
discrepancies,
while
resolution
synergistically
interacted
VSs'
niche
characteristics
determining
extent
such
differences.
Our
findings
could
help
re-evaluating
previous
biodiversity-related
works
relying
geographical
predictions
Worldclim-based
HSMs.
Global Ecology and Biogeography,
Год журнала:
2023,
Номер
32(3), С. 369 - 383
Опубликована: Янв. 27, 2023
Abstract
Aim
To
assess
whether
flexible
species
distribution
models
that
perform
well
at
nearby
testing
locations
still
strongly
when
evaluated
on
spatially
separated
data.
Location
Australian
Wet
Tropics
(AWT),
Ontario,
Canada
(CAN),
north‐east
New
South
Wales,
Australia
(NSW),
Zealand
(NZ),
five
countries
of
America
(SA),
and
Switzerland
(SWI).
Time
period
Most
data
were
collected
between
1950
2000.
Major
taxa
studied
Birds,
mammals,
plants
reptiles.
Methods
We
compared
10
modelling
methods
with
varying
flexibility
in
terms
the
allowed
complexity
their
fitted
functions
[boosted
regression
trees
(BRT),
generalized
additive
model
(GAM),
multivariate
adaptive
splines
(MARS),
maximum
entropy
(MaxEnt),
support
vector
machine
(SVM),
variants
linear
(GLM)
random
forest
(RF),
an
Ensemble
model].
used
established
practices
for
selection
to
avoid
overfitting,
including
parameter
tuning
learning
methods.
Models
trained
presence–background
171
tested
presence–absence
Training
using
both
spatial
partitioning,
latter
based
75‐km
blocks.
calculated
average
performance
mean
rank
(focussing
area
under
receiver
operating
characteristic
precision‐recall
gain
curves,
correlation)
assessed
statistical
significance
differences
them.
Results
The
ranking
did
not
change
strongest
predictive
nonparametric
known
be
flexible.
An
ensemble
formed
by
averaging
predictions
pre‐selected
was
best
followed
MaxEnt
a
variant
forest.
Main
conclusions
Whilst
some
modellers
expect
limited
simple
smooth
predict
better
data,
we
found
no
evidence
blocks
75
km.
conclude
are
tuned
enough
overfitting
effective
predicting
distinct
areas.
Ecology and Evolution,
Год журнала:
2024,
Номер
14(3)
Опубликована: Март 1, 2024
Abstract
In
recent
decades,
ecological
niche
models
(ENMs)
have
been
widely
used
to
predict
suitable
habitats
for
species.
However,
invasive
organisms,
the
prediction
accuracy
is
unclear.
this
study,
we
employed
most
maximum
entropy
(MaxEnt)
model
and
ensemble
(EM)
Biomod2
verified
practical
effectiveness
of
ENM
in
predicting
distribution
areas
insects
based
on
true
occurrence
Hyphantria
cunea
China.
The
results
showed
that
when
only
limited
data
were
used,
two
ENMs
could
not
effectively
H.
,
although
use
global
can
greatly
improve
ENMs.
When
analyzing
same
data,
Biomod2's
was
significantly
better
than
MaxEnt.
For
long‐term
predictions,
area
habitat
predicted
by
much
greater
area;
short‐term
improved.
Under
current
conditions,
China
118
×
10
4
km
2
which
59.32%
moderately
or
highly
habitat.
Future
climate
change
increase
China,
all
scenarios
exceeded
355
accounting
36.98%
total
land
This
study
demonstrates
provides
a
reference
management
Agricultural Water Management,
Год журнала:
2024,
Номер
292, С. 108665 - 108665
Опубликована: Янв. 9, 2024
Accurate
reference
crop
evapotranspiration
(ET0)
estimation
is
essential
for
agricultural
water
management,
productivity,
and
irrigation
systems.
As
the
standard
ET0
method,
Penman-Monteith
equation
has
been
widely
recommended
worldwide.
However,
its
application
still
restricted
to
comprehensive
meteorological
data
deficiency,
making
exploration
of
alternative
simpler
models
acceptable
highly
meaningful.
Concerning
aforementioned
requirement,
this
study
developed
novel
deep
learning
model
(MA-CNN-BiLSTM),
which
incorporates
Multi-Head
Attention
mechanism
(MA),
Convolutional
Neural
Network
(CNN),
Bidirectional
Long
Short-Term
Memory
network
(BiLSTM)
as
intricate
relationship
processor,
feature
extractor,
regression
component,
estimate
based
on
radiation-based
(Rn-based),
humidity-based
(RH-based),
temperature-based
(T-based)
input
combinations
at
600
stations
during
1961–2020
throughout
China
under
internal
external
cross-validation
strategies.
Besides,
through
a
comparative
evaluation
among
MA-CNN-BiLSTM,
CNN-BiLSTM,
BiLSTM,
LSTM,
Multivariate
Adaptive
Regression
Splines
(MARS),
empirical
models,
result
indicated
that
MA-CNN-BiLSTM
achieved
superior
precision,
with
values
Determination
Coefficient
(R2),
Nash–Sutcliffe
efficiency
coefficient
(NSE),
Relative
Root
Mean
Square
Error
(RRMSE),
(RMSE),
Absolute
(MAE)
ranging
0.877–0.972,
0.844–0.962,
0.129–0.292,
0.294–0.644
mm
d−1,
0.244–0.566
d−1
strategy
0.797–0.927,
0.786–0.920,
0.162–0.335,
0.409–0.969
0.294–0.699
strategy.
Specifically,
Rn-based
excelled
in
temperate
continental
zone
(TCZ)
mountain
plateau
(MPZ),
while
RH-based
yielded
best
precision
others.
Furthermore,
was
by
2.74–106.04%
R2,
1.11–120.49%
NSE,
1.41–40.27%
RRMSE,
1.68–45.53%
RMSE,
1.21–38.87%
MAE,
respectively.
In
summary,
main
contribution
present
proposal
LSTM-type
(MA-CNN-BiLSTM)
cope
various
data-missing
scenarios
China,
can
provide
effective
support
decision-making
regional
agriculture
management.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Март 27, 2024
The
currently
available
distribution
and
range
maps
for
the
Great
Grey
Owl
(GGOW;
Strix
nebulosa)
are
ambiguous,
contradictory,
imprecise,
outdated,
often
hand-drawn
thus
not
quantified,
based
on
data
or
scientific.
In
this
study,
we
present
a
proof
of
concept
with
biological
application
technical
workflow
progress
latest
global
open
access
'Big
Data'
sharing,
Open-source
methods
R
geographic
information
systems
(OGIS
QGIS)
assessed
six
recent
multi-evidence
citizen-science
sightings
GGOW.
This
proposed
can
be
applied
quantified
inference
any
species-habitat
model
such
as
typically
species
models
(SDMs).
Using
Random
Forest-an
ensemble-type
Machine
Learning
following
Leo
Breiman's
approach
from
predictions-we
Super
SDM
GGOWs
in
Alaska
running
Oracle
Cloud
Infrastructure
(OCI).
These
SDMs
were
best
publicly
(410
occurrences
+
1%
new
assessment
sightings)
over
100
environmental
GIS
habitat
predictors
('Big
Data').
compiled
associated
overcome
first
time
limitations
traditionally
used
PC
laptops.
It
breaks
ground
has
real-world
implications
conservation
land
management
GGOW,
Alaska,
other
worldwide
'new'
baseline.
As
research
field
remains
dynamic,
have
limits,
ultimate
final
statement
associations
yet,
but
they
summarize
all
topic
testable
fashion
allowing
fine-tuning
improvements
needed.
At
minimum,
allow
low-cost
rapid
great
leap
forward
to
more
ecological
inclusive
at-hand.
GGOWs,
here
aim
correct
perception
towards
inclusive,
holistic,
scientifically
urban-adapted
owl
Anthropocene,
rather
than
mysterious
wilderness-inhabiting
(aka
'Phantom
North').
Such
was
never
created
bird
before
opens
perspectives
impact
policy
sustainability.
Frontiers in Plant Science,
Год журнала:
2025,
Номер
15
Опубликована: Янв. 8, 2025
The
natural
grassland
in
China
is
facing
increasingly
serious
degradation.
Elymus
sibiricus
L.,
as
an
important
native
alpine
grass,
widely
used
the
restoration
and
improvement
of
grassland.
In
this
study,
geographical
distribution
environmental
data
E.
were
collected,
potential
spatiotemporal
pattern,
planting
introduction
adaptability
comprehensively
predicted
by
using
ensembled
ecological
niche
model
Marxan
model.
results
show
that
(1)
spatial
mainly
spans
33°-42°N
95°-118°E.
It
was
distributed
Qilian
Mountains
(northeast
Qinghai-Tibet
Plateau),
Taihang
(junction
Loess
Plateau
Inner
Mongolia
Tianshan
Mountains;
(2)
with
passage
time,
suitable
regions
generally
showed
a
collapse
trend,
but
its
main
did
not
obvious
change,
(centroid)
migrated
to
southwest
2.93
km;
(3)
current
period
significantly
affected
annual
range
monthly
near-surface
relative
humidity,
mean
air
temperature,
evapotranspiration,
climate
moisture
index,
elevation,
exchangeable
Ca2+,
available
P,
H+,
precipitation
amount,
respectively;
(4)
area
cover
2.059
×
105
km2,
which
(southeast
middle
part
Mountains,
southeast
Altai
(5)
six
germplasm
(LM01-LM06)
all
high-elevation
western
China.
study
aims
provide
effective
theoretical
basis
for
collection,
preservation,
utilization
resources