Does Reproductive Success in Orchids Affect the Evolution of Their Number of Flowers?
Iva Traxmandlová,
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Michaela Steffelová,
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Pavel Kindlmann
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et al.
Plants,
Journal Year:
2025,
Volume and Issue:
14(2), P. 204 - 204
Published: Jan. 13, 2025
Species
are
disappearing
worldwide,
and
changes
in
climate
land
use
commonly
assumed
to
be
the
most
important
causes.
Organisms
counteracting
negative
effects
of
environmental
factors
on
their
survival
by
evolving
various
defence
strategies,
which
positively
affect
fitness.
Here,
question
addressed
is:
can
evolution
shape
these
strategies
so
that
they
fitness
an
organism?
This
is
complex
depends
taxa
factors.
Therefore,
here,
only
a
special
case
this
studied
deceptive
species
orchids:
reproductive
success
(RS,
ratio
number
fruits
flowers
produced
plant
during
whole
season),
used
measure
develop
model
describing
how
RS
affects
flowers,
n,
plant.
predicts
that:
(i)
resulting
relationship
between
n
skewed
parabola,
(ii)
distribution
numbers
individuals
with
specific
(n)
NI(n),
also
resembles
parabola
skewed,
(iii)
peak
NI
left
RS.
A
large
set
data
presented
supports
predictions.
If
small,
concave
parabolic
RS–n
dependence
obscured
other
Language: Английский
A Survey of Wild Indigenous Cryptostylis ovata Orchid Populations in Western Australia Reveals Spillover of Exotic Viruses
Viruses,
Journal Year:
2025,
Volume and Issue:
17(1), P. 108 - 108
Published: Jan. 14, 2025
Cryptostylis
ovata
is
a
terrestrial
orchid
endemic
to
southwestern
Australia.
The
virus
status
of
C.
has
not
been
studied.
Eighty-three
samples
from
16
populations
were
collected,
and
sequencing
was
used
identify
RNA
viruses
them.
In
one
population,
all
tested
plants
co-infected
with
isolates
the
exotic-to-Australia
Ornithogalum
mosaic
(OrMV)
bean
yellow
(BYMV).
another
plant
infected
BYMV.
No
detected
in
remaining
populations.
OrMV
isolate
shared
98-99%
nucleotide
identity
identified
wild
indigenous
Lachenalia
(Iridaceae)
South
Africa.
This
suggests
that
source
may
be
or
more
bulbous
iridaceous
flowering
southern
African
origin
introduced
Western
Australia
as
ornamentals
have
since
become
invasive
weeds.
One
BYMV
also
exhibited
99%
strains
isolated
exotic
leguminous
crop
Lupinus
angustifolius
Australia,
suggesting
possible
spillover
species
this
source.
study
highlights
probable
role
weeds
crops
sources
spillovers
plants.
Language: Английский
Naturalness and Tree Composition Determine the Abundance of Rare and Threatened Orchids in Mature and Old-Growth Abies alba Forests in the Northern Apennines (Italy)
Land,
Journal Year:
2025,
Volume and Issue:
14(3), P. 579 - 579
Published: March 10, 2025
Forest
Orchidaceae
are
important
for
European
temperate
forests,
yet
their
distribution
and
abundance
have
so
far
interested
limited
research.
In
three
pure
or
mixed
silver
fir
stands
in
the
Foreste
Casentinesi
National
Park
(NP)
(Northern
Apennines,
Italy)
we
analysed
how
structural
traits
mature
old-growth
forests
affected
orchid
communities
terms
of
main
genera,
trophic
strategy
rarity
NP.
We
established
20
×
60
m
plots
to
quantify
structure
living
dead
tree
community,
including
a
set
attributes
connected
large
trees,
deadwood,
regeneration.
each
plot,
measured
all
species
explored
behaviour
according
(autotrophy/mixotrophy,
obligate
mycoheterotrophy),
within
NP,
threatened
status
IUCN
Red
List.
used
multivariate
ordination
classification
techniques
assess
plot
similarities
forest
Orchid
Community
identify
factors
related
features.
The
were
as
predictors
community
traits.
composition
(i.e.,
dominance/abundance
fir)
presence
genera:
Epipactis
abundant
fir-dominated
Cephalanthera
beech
forests.
Interestingly,
could
become
even
beech-dominated
conditions
if
regeneration
was
established.
Old-growth
like
density
deadwood
volume
determinants
rare
mycoheterotrophic
species.
Our
results
provided
first
quantitative
description
reference
be
protection
restoration
Language: Английский
Can global warming be beneficial for Arctic-alpine orchid species? Outcomes from ecological niche modeling for Chamorchis alpina (L.) Rich. (Orchidaceae)
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
943, P. 173616 - 173616
Published: June 5, 2024
Language: Английский
Can Global Warming Be Beneficial for Alpine–Arctic Orchid Species? Outcomes from Ecological Niche Modeling for Chamorchis Alpina (L.) Rich. (Orchidaceae)
Published: Jan. 1, 2024
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Language: Английский
Does Climate Change Pose a Threat to the Guild Mimicry System of Australian Orchids?
Ecology and Evolution,
Journal Year:
2024,
Volume and Issue:
14(12)
Published: Dec. 1, 2024
Global
warming
is
one
of
the
biggest
threats
to
global
biodiversity
causing
not
only
changes
in
patterns
precipitation
and
temperature
but
also
disturbing
ecological
interactions.
The
aim
our
study
was
forecast
effect
climate
change
on
distribution
food-deceptive
orchid
species
whose
pollination
strategy
relies
a
strict
association
with
pollinators
co-occurring
rewarding
Faboideae
plants.
We
used
niche
modeling
approach
evaluate
future
overlap
suitable
niches
studied
predicted
their
partners.
Models
were
made
based
two
different
circulation
models
(FIO,
CNRM).
CNRM
projections
predict
expansion
orchids'
geographical
range.
In
contrast,
FIO
prediction
less
optimistic,
forecasting
range
contraction.
showed
responses
no
consistent
how
might
change.
Most
scenarios
modifications
do
significant
loss
Language: Английский
Recent growth in occurrences of Acrida ungarica (Orthoptera: Acrididae) at the northern margin of the species range: Is it the result of global warming?
European Journal of Entomology,
Journal Year:
2023,
Volume and Issue:
120, P. 338 - 345
Published: Nov. 15, 2023
The
number
of
records
Acrida
ungarica
in
novel
habitats
and
places
where
the
species
was
considered
extinct,
has
markedly
increased
recent
years.
We
hypothesized
that
newly
revealed
occurrences,
on
northern
margin
range,
were
not
due
to
an
increase
survey
effort,
but
rather
a
result
warming
climate
Carpathian
Basin.
studied
occurrence
data
intensity
Orthoptera
surveys
over
period
2002-2022
1,840
6
Ă
5.5
km
grid
cells
Central
European
Flora
Mapping
System.
As
background
variables,
we
included
macroclimatic
vegetation
cover
main
potential
habitats.
containing
A.
significantly
higher
than
corresponding
surveyed
for
orthopterans
presence
sand
salt
steppe
habitats,
respectively.
Furthermore,
from
2012
2022,
significant
increasing
trends
effective
heat
summation
above
10°C
summer
months.
That
known
distribution
is
unrelated
rise
indicates
seems
be
increasing,
making
it
one
winners
global
warming.
At
same
time,
regional
rising
levels
disturbance
(highway
networks,
large
fallow
areas)
can
contribute
successful
horizontal
expansion
related
open
this
tolerance
disturbance.
Language: Английский