Journal of Applied Ecology,
Journal Year:
2024,
Volume and Issue:
61(5), P. 1000 - 1014
Published: March 14, 2024
Abstract
Biodiversity
loss
and
vast
forest
diebacks
due
to
climate
change‐induced
disturbances
require
adapted
management
strategies
that
reconcile
economic
interests
conservation.
Tree
species
selection,
including
admixture
of
fast‐growing
drought‐tolerant
non‐native
native
forests,
is
an
increasingly
considered
approach.
However,
we
lack
data
on
how
such
mixtures
affect
biodiversity,
especially
for
the
sparsely
researched
major
above‐ground
part
trees,
canopy.
In
40
temperate
plots
in
northwest
Germany,
investigated
monocultures
admixtures
introduced
conifers
(native
Norway
spruce
planted
outside
its
natural
range
Douglas
fir)
broadleaved
European
beech
forests
abundance,
biomass,
taxonomic
functional
diversity
community
composition
canopy
beetles
across
trophic
guilds.
Diverse
arthropod
communities
are
vital
contributors
health
resilience,
therefore
valuable
indicators
assess
evaluate
forestry
measures.
Monospecific
stands
fir
reduced
beetle
abundance
compared
beech,
exceeding
negative
effects
spruce.
These
were
more
pronounced
herbivorous
beetles,
while
they
less
strong
predators.
Beetle
monospecific
had
low
richness.
with
high
dissimilarity
between
local
(turnover,
i.e.
beta
diversity)
total
at
landscape
scale
(gamma
diversity).
Mixtures
generally
mitigated
conifers,
shifts
beech.
Synthesis
applications
:
occurrence
showed
undesirable
as
a
shifted
mixed
specifically
admixed
did
not
reduce
turnover
landscape‐scale
diversity.
line
recent
studies
other
taxa,
conclude
but
plantations,
can
potentially
serve
compromise
conservational
interests.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
941, P. 173665 - 173665
Published: May 31, 2024
Recent
hot
droughts
have
caused
tree
vitality
decline
and
increased
mortality
in
many
forest
regions
on
earth.
Most
of
Central
Europe's
important
timber
species
suffered
from
the
extreme
2018/2019
drought,
confronting
foresters
with
difficult
questions
about
choice
more
drought-
heat-resistant
species.
We
compared
growth
dynamics
European
beech,
sessile
oak,
Scots
pine
Douglas
fir
a
warmer
cooler
lowland
region
Germany
to
explore
adaptive
potential
four
climate
warming
(24
stands).
The
basal
area
increment
(BAI)
two
conifers
has
declined
since
1990-2010
both
regions,
that
beech
region,
while
oak
showed
positive
BAI
trends.
A
2
°C
difference
mean
temperatures
higher
frequency
days
(temperature
maximum
>30
°C)
resulted
greater
sensitivity
negative
climatic
water
balance
elevated
summer
heat
pine.
This
suggests
include
climate-growth
analyses.
Negative
pointer
years
were
closely
related
dry
years.
Nevertheless,
all
recovery
within
one
three
conclude
are
sensitive
deteriorating
temperatures,
so
far
not
been
able
successfully
acclimate
climate,
especially
but
also
pine,
being
vulnerable
drying
climate.
Forest Ecology and Management,
Journal Year:
2024,
Volume and Issue:
564, P. 122004 - 122004
Published: May 29, 2024
Forest
management
aims
for
productive
and
stable
forests
that
continuously
provide
ecosystem
goods
services,
including
balancing
nutrient
fluxes.
Increasing
heat
frequent
droughts
in
temperate
European
make
the
introduction
of
non-native
Douglas
fir
(Pseudotsuga
menziesii
(Mirb.)
Franco)
an
increasingly
relevant
climate
change
adaptation
strategy,
particularly
as
admixture
to
native
tree
species,
such
beech
(Fagus
sylvatica
[L.]).
can
alter
biogeochemical
processes
forest
soils,
potentially
leading
excess
nitrogen
ecosystem,
but
biotic
abiotic
controls
this
effect
need
further
examination
(species
interactions,
soil
type).
Here
we
studied
nitrate
leaching
on
plots
two
contrasting
textures
(southern
loamy
northern
sandy
site)
planted
with
either
pure
fir,
Norway
spruce
(Picea
abies
[L.]
Karst.),
or
a
mixture
conifers.
We
used
P80
suction
lysimeters
at
5
60
cm
depth
collected
solution
over
continuous
years
estimate
risks.
found
highest
concentrations
lower
layers
under
(29.14
mg/L),
which
corroborates
findings
some
studies
conducted
stands.
Comparisons
below
litter
layer
main
rooting
zone
implied
accumulation
microbial
production
is
taking
place
fir.
In
fir-beech
mixed
stands,
however,
sustained
significantly
(1.68
implying
effect.
Furthermore,
site
played
key
role
controlling
sites
finer
texture
C:N
ratio.
Elevated
were
associated
P-limitation
trees,
likely
caused
reduced
uptake.
discuss
results
regards
throughfall,
litter,
characteristics.
conclude
increased
stands
may
pose
relatively
higher
risk
than
considerably
compared
However,
low
susceptibility
seems
be
strong
trait
mixtures,
diminishing
high
potential
induces
sites.
Low
sustaining
adequate
nutrition
reducing
pollution
groundwater.
Our
strongly
urge
forestry
experts
carefully
assess
conditions
foster
mixtures
when
planting
IntechOpen eBooks,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 20, 2025
Pseudotsuga
menziesii
((Mirb.)
Franco),
known
as
Douglas
fir,
is
a
prominent
conifer
species
native
to
North
America.
It
for
its
adaptability,
rapid
growth,
and
high-quality
wood.
was
introduced
Europe
in
the
nineteenth
century
currently
most
abundant
non-native
tree
cultivated
Central
European
forests.
In
Portugal,
initially
an
ornamental
plant
used
experimental
purposes.
However,
notable
qualities,
particularly
high
volume
production,
have
garnered
significant
interest.
This
has
led
implementation
of
reforestation
programs,
which
expanded
forested
areas
by
late
twentieth
century.
study
aims
review
state-of-the-art
on
species,
with
focus
forest
stands
outside
natural
distribution
area,
specifically
Portugal.
The
authors
present
information
species’
traits,
growth
dynamics,
silviculture
management,
available
models
support
wood
properties.
main
specific
covered
are:
(i)
botanical
ecological
characteristics
including
distribution,
genetic
diversity,
responses
biotic
abiotic
stresses;
(ii)
silvicultural
practices
management
strategies
adapted
along
overview
decision
tools;
(iii)
wood,
covering
biometry,
physical
mechanical
Central European Forestry Journal,
Journal Year:
2025,
Volume and Issue:
71(1), P. 53 - 64
Published: Feb. 1, 2025
Abstract
Douglas
fir
(
Pseudotsuga
menziesii
[Mirb.]
Franco)
is
considered
one
of
the
most
promising
introduced
tree
species
for
use
in
forestry
Central
Europe.
The
formation
vital
and
stable
forest
stands
with
a
certain
share
(DF)
requires
application
appropriate
silvicultural
measures,
such
as
thinning.
article
evaluates
growth
response
DF
to
initial
experimental
Eight
were
analysed
on
nutrient-rich
sites
three
vegetation
zones
Querceto-Fagetum
,
Fagetum
Abieto-Fagetum
).
analysis
includes
both
dominated
by
where
only
interspersed.
thinning
was
applied
when
dominant
height
ranged
from
5
20
m.
A
10
m
used
threshold
define
well-timed
data
using
Bayesian
hierarchical
modelling,
generalized
models
employed.
trees
responded
early
significant
acceleration
radial
growth,
leading
improvements
height-to-diameter
ratio
(HDR)
crown
(CR)
parameters.
delayed
negligible.
Neither
nor
had
detectable
effect
trees.
result
confirms
necessity
initiating
at
stage
thickets.
should
ideally
begin
between
4
meters.
At
this
stage,
it
possible
positively
influence
diameter
mitigate
deterioration
individual
stability
well
whole
stand.
