Fire,
Journal Year:
2024,
Volume and Issue:
7(4), P. 125 - 125
Published: April 8, 2024
We
investigated
the
influence
of
fire
severity,
logging
burnt
wood,
local
ecological
factors
and
their
interaction
on
natural
regeneration,
survival
growth
maritime
pine
(Pinus
pinaster
Ait.),
following
a
that
took
place
in
2005.
During
period
2006–2020,
sample
1900
seedlings
were
monitored,
which
three
post-fire
treatments
applied:
(1)
Early
(before
seedling
emergence);
(2)
Delayed
(after
(3)
No
management.
Multivariate
semi-parametric
non-parametric
techniques
used
to
model
survival,
estimated
density
regeneration.
Seedling
was
31%
with
mean
more
than
2000
seedlings/ha
at
end
study
period.
Logging
before
emergence
positively
related
density.
resulted
lowest
Fire
severity
had
negative
regeneration
The
findings
indicate
site
conditions
have
stronger
subsequent
management
treatments.
In
order
ensure
presence
pure
or
mixed
stands,
silvicultural
work
is
required
control
competition
from
other
species
reduce
risk
new
wildfires.
Knowledge-Based Systems,
Journal Year:
2023,
Volume and Issue:
283, P. 111198 - 111198
Published: Nov. 22, 2023
Each
year,
wildfires
destroy
larger
areas
of
Spain,
threatening
numerous
ecosystems.
Humans
cause
90%
them
(negligence
or
provoked)
and
the
behaviour
individuals
is
unpredictable.
However,
atmospheric
environmental
variables
affect
spread
wildfires,
they
can
be
analysed
by
using
deep
learning.
In
order
to
mitigate
damage
these
events,
we
proposed
novel
Wildfire
Assessment
Model
(WAM).
Our
aim
anticipate
economic
ecological
impact
a
wildfire,
assisting
managers
in
resource
allocation
decision-making
for
dangerous
regions
Castilla
y
León
Andalucía.
The
WAM
uses
residual-style
convolutional
network
architecture
perform
regression
over
greenness
index,
computing
necessary
resources,
control
extinction
time,
expected
burnt
surface
area.
It
first
pre-trained
with
self-supervision
100,000
examples
unlabelled
data
masked
patch
prediction
objective
fine-tuned
very
small
dataset,
composed
445
samples.
pretraining
allows
model
understand
situations,
outclassing
baselines
1,4%,
3,7%
9%
improvement
estimating
human,
heavy
aerial
resources;
21%
10,2%
time;
18,8%
Using
provide
an
example
assessment
map
León,
visualizing
resources
entire
region.
Fire Ecology,
Journal Year:
2023,
Volume and Issue:
19(1)
Published: April 20, 2023
Abstract
Background
Trends
of
increasing
area
burned
in
many
regions
worldwide
are
leading
to
more
locations
experiencing
short-interval
reburns
(i.e.,
fires
occurring
two
or
times
the
same
place
within
1–3
decades).
Field
and
satellite
indices
burn
severity
well
tested
forests
a
single
recent
fire,
but
reliability
these
is
poorly
understood.
We
how
commonly
used
field
index
(the
Composite
Burn
Index,
CBI)
Relative
differenced
Normalized
Ratio,
RdNBR)
compared
eight
individual
measures
vs.
areas
one
whether
results
depended
on
first
fire
was
stand
replacing
(fire
that
lethal
most
dominant
trees).
Results
Correspondence
between
both
CBI
RdNBR
with
differed
for
some
metrics
severity.
Divergence
relationship
greatest
when
followed
prior
stand-replacing
were
comparable
non-stand
lower
severity).
When
fires,
underestimated
second
tree-canopy
(e.g.,
canopy
cover
loss,
tree
mortality),
as
young
early
developmental
stages
sensitive
fire.
Conversely,
less-than-stand-replacing
overestimated
forest-floor
metrics,
past
low
leave
behind
live
fire-resistant
trees
can
stimulate
resprouting
understory
vegetation.
Finally,
neither
nor
accurately
detected
deep
wood
charring—an
important
phenomenon
occurs
reburns.
Conclusion
Our
findings
inform
interpretability
by
identifying
be
under-
over-estimated,
depending
preceding
reburn.
Adjustments
measurements
made
particularly
critical
reburned
increase.
Fire Ecology,
Journal Year:
2023,
Volume and Issue:
19(1)
Published: July 31, 2023
Abstract
Background
Climate
is
a
main
driver
of
fire
regimes,
but
recurrent
fires
provide
stabilizing
feedbacks
at
several
spatial
scales
that
can
limit
spread
and
severity—potentially
contributing
to
form
self-regulation.
Evaluating
the
strength
these
in
wildland
systems
difficult
given
temporal
observation
required.
Here,
we
used
REBURN
model
directly
examine
relative
strengths
top-down
bottom-up
drivers
over
3000-year
simulation
period,
within
275,000-ha
conifer-dominated
landscape
north
central
Washington
State,
USA.
Results
We
found
strong
support
for
controls
on
patterns.
Fire
weather
was
large
occurrence,
area
burned
moderated
by
ignition
frequencies
areas
limited
fuels
fuel
contagion
(i.e.,
fences).
Landscapes
comprised
>40%
fences
rarely
experienced
years.
When
did
occur
during
recovery
time
100–300
years
or
more
generally
required
recover
pre-fire
vegetation
Conclusions
Simulations
showed
interactions
between
weather,
contagion,
topography,
ignitions
manifest
variability
size
severity
patch
distributions.
Burned
recovering
mosaics
provided
functional
feedbacks,
kind
meta
stability,
which
future
severity,
even
under
extreme
conditions.
be
applied
new
geographic
physiographic
landscapes
simulate
represent
natural
culturally
influenced
regimes
historical,
current,
climatic
settings.
Global Change Biology,
Journal Year:
2023,
Volume and Issue:
29(24), P. 7029 - 7050
Published: Sept. 14, 2023
Climate
warming,
land
use
change,
and
altered
fire
regimes
are
driving
ecological
transformations
that
can
have
critical
effects
on
Earth's
biota.
Fire
refugia-locations
burned
less
frequently
or
severely
than
their
surroundings-may
act
as
sites
of
relative
stability
during
this
period
rapid
change
by
being
resistant
to
supporting
post-fire
recovery
in
adjacent
areas.
Because
value
forest
ecosystem
persistence,
there
is
an
urgent
need
anticipate
where
refugia
most
likely
be
found
they
align
with
environmental
conditions
support
tree
recruitment.
Using
biophysical
predictors
patterns
burn
severity
from
1180
recent
events,
we
mapped
the
locations
potential
across
upland
conifer
forests
southwestern
United
States
(US)
(99,428
km2
area),
a
region
highly
vulnerable
fire-driven
transformation.
We
low
pre-fire
cover,
flat
slopes
topographic
concavities,
moderate
weather
conditions,
spring-season
burning,
areas
affected
low-
moderate-severity
within
previous
15
years
were
commonly
associated
refugia.
Based
current
(i.e.,
2021)
predicted
67.6%
18.1%
our
study
area
would
contain
under
extreme
weather,
respectively.
However,
36.4%
(moderate
weather)
31.2%
(extreme
more
common
experienced
fires,
increased
prescribed
resource
objective
fires
promote
fire-resistant
landscapes.
When
overlaid
models
recruitment,
23.2%
6.4%
classified
high
recruitment
surrounding
landscape.
These
may
disproportionately
valuable
for
sustainability,
providing
habitat
fire-sensitive
species
maintaining
persistence
increasingly
fire-prone
world.
Challenges,
Journal Year:
2025,
Volume and Issue:
16(1), P. 13 - 13
Published: Feb. 18, 2025
Wildfires
are
projected
to
increase
in
severity
and
frequency
due
climate
change,
the
electric
grid
is
both
a
cause
of
wildfires
vulnerable
wildfires.
Equipment
from
accounts
for
10%
fires
burned
California
3%
nationally.
Recent
catastrophic
wildfires,
such
as
Lahaina
Fire,
Camp
Marshall
Smokehouse
Creek
fires,
were
all
started
by
electrical
equipment
show
how
devastating
these
events
can
be
because
they
threaten
lives
structures.
Vegetation
structure,
weather
winds,
vegetation
response,
land
use,
human
activities
impact
likelihood
severe
We
explore
relationship
between
built
environment,
infrastructure
specifically,
its
role
causing
find
lessons
learned
increasing
resilience.
Electric
utility
companies
currently
employ
multiple
methods
mitigate
fire,
including
(1)
early
detection,
(2)
hardening,
(3)
management,
(4)
pre-emptive
shutoffs.
Utility
need
consider
conditions
wildfire
that
each
mitigation
strategy
has
on
drivers
behavior,
single
solution
will
not
adequate.
work
with
stakeholders
develop
holistic
reduce
ignition
spread
improve
resiliency.
