Growth, Evapotranspiration, Gas Exchange and <em>Ch a</em> Fluorescence of Ipê‐Rosa Seedlings at Different Levels of Water Replacement
Published: Aug. 22, 2024
This
paper
aimed
to
evaluate
the
growth,
gas
exchange
and
Chl
a
fluorescence
in
ipê-rosa
seedlings,
subjected
levels
of
100,
75,
50
25%
water
replacement
(LWR),
greenhouse.
The
morphometric
variables
plant
height,
diameter
at
stem
number
leaves
leaflets,
root
length
volume,
dry
mass
leaf
area
were
evaluated.
potential
evapotranspiration
seedlings
(ETc)
was
obtained
using
direct
weighing,
considering
as
reference
100%
variation
between
subsequent
days;
cultivation
coefficients
(kc)
by
ratio
ETc
(ETo)
Penman-Montheit
FAO-56
method.
Biomass
data
combined
determine
sensitivity.
Diurnal
fluxes
(net
photosynthesis
rate,
transpiration
stomatal
conductance,
internal
atmospheric
carbon
ratio,
use
efficiency
temperature)
(Fv/Fm,
ΦPSII,
ETR,
Fv’/Fm’,
NPQ
qL)
Water
restriction
caused
reductions
90.9
84.7%
increase
height
when
compared
with
replacement,
while
biomass
accumulation
reduced
96.9%.
kc
values
increased
throughout
seedling
production
cycle,
ranging
from
0.59
2.86.
Maximum
sensitivity
occurred
50%
Ky
=
1.62.
assimilation
rates
morning,
6.11
12.50
µmol
m-2
s-1.
Ipê-rosa
regulate
physiology
exchange,
depending
on
amount
available,
only
re-placement
substrate
allows
survive.
Language: Английский
Shifting vegetation phenology in protected areas: A response to climate change
Irina Onțel,
No information about this author
Sorin Avram,
No information about this author
Gheorghe Carmen Adriana
No information about this author
et al.
Ecological Informatics,
Journal Year:
2024,
Volume and Issue:
unknown, P. 102962 - 102962
Published: Dec. 1, 2024
Language: Английский
Assessing the combined effects of forest management and climate change on carbon and water fluxes in European beech forests
Forest Ecosystems,
Journal Year:
2024,
Volume and Issue:
unknown, P. 100290 - 100290
Published: Dec. 1, 2024
Language: Английский
Assessing the combined effects of forest management and climate change on carbon and water fluxes in European beech forests
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 21, 2024
The
consequences
of
climate
change
continue
to
threaten
European
forests,
particularly
for
species
located
at
the
edges
their
latitudinal
and
altitudinal
ranges.
While
extensively
studied
in
Central
Europe,
beech
forests
require
further
investigation
understand
how
will
affect
these
ecosystems
Mediterranean
areas.
Proposed
silvicultural
options
increasingly
aim
sustainable
management
reduce
biotic
abiotic
stresses
enhance
forest
ecosystems'
resistance
resilience
mechanisms.
Process-based
models
(PBMs)
can
help
us
simulate
such
phenomena
capture
early
stress
signals
while
considering
effect
different
approaches.
In
this
study,
we
focus
on
estimating
sensitivity
two
state-of-the-art
PBMs
by
simulating
carbon
water
fluxes
stand
level
assess
productivity
changes
feedback
resulting
from
climatic
forcings
as
well
regimes.
We
applied
3D-CMCC-FEM
MEDFATE
(C)
(H20)
sites
Italian
peninsula,
Cansiglio
north
Mongiana
south,
under
managed
vs.
unmanaged
scenarios
current
(RCP4.5
RCP8.5).
To
ensure
confidence
modes'
resuts,
preliminary
evaluated
performance
C
H2O
flux
three
additional
FLUXNET
network
along
a
gradient
spanning
Denmark
central
Italy.
model
achieved
R2
values
0.83
0.86
with
RMSEs
2.53
2.05
H20
fluxes,
respectively.
showed
0.76
0.69
2.54
3.01.
At
site
northern
Italy,
both
simulated
general
increase
RCP8.5
scenario
compared
climate.
Still,
no
benefit
plots
ones,
does
not
have
availability
limitations,
thus,
competition
is
low.
southern
predict
decrease
forcing
climate;
an
when
specific
regimes
scenarios.
Conversely,
are
experience
first
mortality
prematurely
due
(MEDFATE)
starvation
(3D-CMCC-FEM)
conclusion,
interventions
may
be
considered
viable
solution
conservation
future
conditions
moister
like
Cansiglio,
drier
lie
alone.
Language: Английский
R3DFEM: an R package for running the 3D-CMCC-FEM model
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 11, 2024
Abstract
Forest
ecosystems
account
for
about
one-third
of
the
Earth’s
land
area,
and
monitoring
their
structure
dynamics
is
essential
understanding
land’s
carbon
cycle
role
in
greenhouse
gas
balance.
In
this
framework,
process-based
forest
models
(PBFMs)
allow
studying,
predicting
growth
dynamics,
capturing
spatial
temporal
patterns
fluxes
stocks.
The
‘Three
Dimensional-Coupled
Model
Carbon
Cycle
-
Ecosystem
Module’
(3D-CMCC-FEM)
a
well-known
eco-physiological,
biogeochemical,
biophysical
model,
able
to
simulate
energy,
carbon,
water
nitrogen
allocation
homogeneous
heterogenous
ecosystem.
model
specifically
designed
represent
stands,
from
simple
ones
those
with
complex
structures,
involving
several
cohorts
competing
light
other
resources
prognostic
way.
Currently,
implemented
C-language,
which
can
be
challenging
broad
public
use,
thus
limiting
its
applications.
paper,
we
present
open-source
R
package
‘R3DFEM’
introduces
efficient
methods
for:
i)
generating
handling
input
data
needed
initialization;
ii)
running
simulations
different
set
up
exploring
input;
iii)
plotting
output
data.
functions
R-package
are
user-friendly
intended
all
users
little
advanced
coding
skills,
who
aim
perform
using
3D-CMCC-FEM.
Here
functionalities
some
real
case
study
Language: Английский