Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Oct. 16, 2023
Abstract
The
long-term
effects
of
the
Central
Atlantic
Magmatic
Province
(CAMP),
a
large
igneous
province
connected
to
end-Triassic
mass-extinction
(201.5
Ma),
remain
largely
elusive.
Here,
we
document
persistence
volcanic-induced
mercury
pollution
and
its
on
biosphere
for
2
million
years
after
extinction
event.
In
sediments
recovered
in
Germany
(Schandelah-1
core),
record
not
only
high
abundances
malformed
fern
spores
at
Triassic-Jurassic
boundary,
but
also
during
Hettangian,
indicating
repeated
vegetation
disturbance
environmental
stress
that
was
eccentricity
forced.
Crucially,
these
correspond
spikes
sedimentary
Hg
concentrations.
Hg-isotope
ratios
(δ202Hg,
Δ199Hg)
indicate
volcanic
source
boundary
terrestrial
early
Jurassic
peaks.
We
conclude
injected
by
CAMP
across
repeatedly
remobilized
from
coastal
wetlands
hinterland
areas
eccentricity-forced
phases
severe
hydrological
upheaval
erosion,
focusing
Hg-pollution
shallow
marine
basins.
Science Advances,
Journal Year:
2024,
Volume and Issue:
10(5)
Published: Jan. 31, 2024
The
end-Permian
mass
extinction
was
the
most
severe
ecological
event
during
Phanerozoic
and
has
long
been
presumed
contemporaneous
across
terrestrial
marine
realms
with
global
environmental
deterioration
triggered
by
Siberian
Traps
Large
Igneous
Province.
We
present
high-precision
zircon
U-Pb
geochronology
chemical
abrasion-isotope
dilution-thermal
ionization
spectrometry
technique
on
tuffs
from
to
transitional
coastal
settings
in
Southwest
China,
which
reveals
a
protracted
collapse
of
Cathaysian
rainforest
beginning
after
onset
extinction.
Integrated
high-resolution
coeval
successions,
our
results
suggest
that
occurred
diachronously
latitude,
at
high
latitudes
late
Changhsingian
progressing
tropics
early
Induan,
spanning
duration
nearly
1
million
years.
This
latitudinal
age
gradient
may
have
related
variations
surface
warming
more
degraded
conditions
higher
contributing
rates.
New Phytologist,
Journal Year:
2024,
Volume and Issue:
242(2), P. 392 - 423
Published: Feb. 26, 2024
A
minuscule
fraction
of
the
Earth's
paleobiological
diversity
is
preserved
in
geological
record
as
fossils.
What
plant
remnants
have
withstood
taphonomic
filtering,
fragmentation,
and
alteration
their
journey
to
become
part
fossil
provide
unique
information
on
how
plants
functioned
paleo-ecosystems
through
traits.
Plant
traits
are
measurable
morphological,
anatomical,
physiological,
biochemical,
or
phenological
characteristics
that
potentially
affect
environment
fitness.
Here,
we
review
rich
literature
paleobotany,
lens
contemporary
trait-based
ecology,
evaluate
which
well-established
extant
hold
greatest
promise
for
application
In
particular,
focus
functional
traits,
those
properties
leaf,
stem,
reproductive,
whole
fossils
offer
insights
into
functioning
when
alive.
The
limitations
a
approach
paleobotany
considerable.
However,
our
critical
assessment
over
30
present
an
initial,
semi-quantitative
ranking
26
paleo-functional
based
methodological
criteria
potential
impact
Earth
system
processes,
be
quantifiable.
We
demonstrate
valuable
inferences
paleo-ecosystem
processes
(pollination
biology,
herbivory),
past
nutrient
cycles,
paleobiogeography,
paleo-demography
(life
history),
history
can
derived
plants.
Elements,
Journal Year:
2023,
Volume and Issue:
19(5), P. 276 - 281
Published: Oct. 1, 2023
Evolution
has
not
been
a
simple
path.
Since
the
first
appearance
of
complex
life,
there
have
several
mass
extinctions
on
Earth.
This
was
exemplified
by
most
severe
event
during
Phanerozoic,
end-Permian
extinction
that
occurred
252
million
years
ago
and
saw
loss
90%
70%
all
marine
terrestrial
species,
respectively.
Such
entirely
reset
ecosystems.
Increasing
evidence
points
to
massive
eruption
crustal
emplacement
magmas
associated
with
large
igneous
provinces
(LIPs)
as
key
drivers
these
events.
Understanding
how
LIP
events
disrupted
global
biogeochemical
cycles
is
prime
importance,
especially
humans
alter
atmosphere
biosphere
today.
We
explore
cascading
impacts
climate,
oceans,
land—including
runaway
greenhouses,
release
toxic
metals
environment,
destruction
ozone
layer,
oceans
are
driven
anoxic
acidic
states—all
which
parallels
in
consequences
modern
industrialisation.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: April 27, 2024
Abstract
The
long-term
effects
of
the
Central
Atlantic
Magmatic
Province,
a
large
igneous
province
connected
to
end-Triassic
mass-extinction
(201.5
Ma),
remain
largely
elusive.
Here,
we
document
persistence
volcanic-induced
mercury
(Hg)
pollution
and
its
on
biosphere
for
~1.3
million
years
after
extinction
event.
In
sediments
recovered
in
Germany
(Schandelah-1
core),
record
not
only
high
abundances
malformed
fern
spores
at
Triassic-Jurassic
boundary,
but
also
during
lower
Jurassic
Hettangian,
indicating
repeated
vegetation
disturbance
stress
that
was
eccentricity-forced.
Crucially,
these
correspond
increases
sedimentary
Hg-concentrations.
Hg-isotope
ratios
(δ
202
Hg,
Δ
199
Hg)
suggest
volcanic
source
Hg-enrichment
boundary
terrestrial
early
peaks.
We
conclude
volcanically
injected
Hg
across
repeatedly
remobilized
from
coastal
wetlands
hinterland
areas
eccentricity-forced
phases
severe
hydrological
upheaval
erosion,
focusing
Hg-pollution
European
Basin.
Science,
Journal Year:
2024,
Volume and Issue:
385(6714), P. 1189 - 1195
Published: Sept. 12, 2024
The
ultimate
driver
of
the
end-Permian
mass
extinction
is
a
topic
much
debate.
Here,
we
used
multiproxy
and
paleoclimate
modeling
approach
to
establish
unifying
theory
elucidating
heightened
susceptibility
Pangean
world
prolonged
intensified
El
Niño
events
leading
an
state.
As
atmospheric
partial
pressure
carbon
dioxide
doubled
from
about
410
860
ppm
(parts
per
million)
in
latest
Permian,
meridional
overturning
circulation
collapsed,
Hadley
cell
contracted,
Niños
intensified.
resultant
deforestation,
reef
demise,
plankton
crisis
marked
start
cascading
environmental
disaster.
Reduced
sequestration
initiated
positive
feedback,
producing
warmer
hothouse
and,
consequently,
stronger
Niños.
compounding
effects
elevated
climate
variability
mean
state
warming
led
catastrophic
but
diachronous
terrestrial
marine
losses.
Discover Sustainability,
Journal Year:
2024,
Volume and Issue:
5(1)
Published: Nov. 26, 2024
Contrary
to
the
conventional
wisdom
and
practices
moderate
non-burning
ultraviolet
(UV)
radiation
may
be
beneficial
our
existence,
but
ecosystems
human
health
are
seriously
threatened
by
rise
in
UV
from
ozone
layer
loss
climate
change.
Nevertheless,
there
is
less
current
information
on
environmental
effects
of
elevated
stress.
This
review
looks
at
patterns
levels
today
emphasizes
causes,
which
include
anthropogenic
activities
ozone.
With
a
focus
physiological,
cellular,
ecological
mechanisms,
environment,
wildlife,
aquatic
terrestrial
ecosystems,
thoroughly
discussed.
Various
mitigation
tactics,
such
as
technological
ones
like
UV-protective
materials,
biological
breeding
UV-resistant
species,
policy
public
education
international
agreements,
discussed
here.
provides
thorough
understanding
potential
techniques
combining
these
various
strategies.
study
crucial
that
will
help
protect
against
harmful
environment
health.
Diversity,
Journal Year:
2024,
Volume and Issue:
16(7), P. 428 - 428
Published: July 22, 2024
Because
their
resistant,
sporopolleninous
walls
preserve
a
record
of
morphogenetic
change
during
spore
formation,
fossil
cryptospores
provide
direct
physical
the
evolution
sporogenesis
algal–plant
transition.
That
transition
itself
is
story
development—it
not
about
phylogeny.
Here,
we
review
terrestrially
derived
spore/cryptospore
assemblages
and
attempt
to
place
these
microfossils
in
evolutionary
context
with
respect
origin
complex
multicellularity
plants.
Cambrian
show
features
related
karyokinesis
seen
extant
charophytes,
but
they
also
possess
ultrastructure
similar
that
liverworts
today.
Dyadospora,
cryptospore
dyad
recovered
from
sporangia
Devonian
embryophytes,
first
occurs
earliest
Ordovician.
Tetrahedraletes,
likely
precursor
trilete
spore,
Middle
These
fossils
correspond
novelties
were
acquired
period
genome
assembly
prior
existence
upright,
axial
sporophytes.
The
cryptospore/spore
provides
temporal
scaffold
for
acquisition
novel
characters
relating
plant
Cambrian–Silurian
interval.
