Patterns in the genetic structure of 49 lowland rain forest tree species co‐distributed on opposite sides of the northern Andes
Biotropica,
Journal Year:
2024,
Volume and Issue:
56(2)
Published: Feb. 22, 2024
Abstract
The
Andes
are
a
major
dispersal
barrier
for
lowland
rain
forest
plants
and
animals,
yet
hundreds
of
tree
species
distributed
on
both
sides
the
northern
Andes,
raising
questions
about
how
influenced
their
biogeographic
histories
population
genetic
structure.
To
explore
these
questions,
we
generated
standardized
datasets
thousands
SNPs
from
paired
populations
49
co‐distributed
in
communities
located
Panama
Amazonian
Ecuador
calculated
diversity
(
π
)
absolute
divergence
d
XY
within
between
populations,
respectively.
We
predicted
(1)
higher
ancestral
source
region
(east
or
west
Andes)
each
taxon
(2)
correlation
statistics
with
attributes,
including
elevational
range
life‐history
strategy.
found
that
was
putative
regions,
possibly
reflecting
founder
events
during
colonization.
little
support
relationship
attributes
except
limits
exhibited
,
implying
older
times.
One
possible
explanation
this
pattern
is
through
mountain
passes
declined
importance
relative
to
via
alternative
routes
as
experienced
uplift.
no
difference
mean
Central
America
Amazon.
Overall,
our
results
suggest
across
has
left
enduring
signatures
structure
widespread
trees.
outline
additional
hypotheses
be
tested
species‐specific
case
studies.
Language: Английский
Pentagonia plicatifolia (Rubiaceae, Dialypetalantheae) a new species from the Middle Magdalena Valley of Colombia, with a key for the Colombian species of the genus
Brittonia,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
We
describe
and
illustrate
Pentagonia
plicatifolia
A.F.Majín-L.
&
M.A.Jaram
,
a
new
species
from
the
foothills
wet
montane
forest
remnants
(at
elevations
of
300–1,240
m)
at
Serranía
de
Las
Quinchas,
region
located
in
Middle
Magdalena
Valley
(the
easternmost
part
Chocó
Region),
western
slopes
Eastern
Cordillera
Colombia
(Boyacá
department).
compared
this
taxon
with
morphologically
similar
by
leaf
characters
(color
shape)
flower
size.
is
country
largest
number
species,
likely
because
three
important
centers
diversification
converge:
tropical
Andes,
region,
northwestern
Amazon.
A
key
to
22
occurring
also
presented.
Language: Английский