Near-time
conservation
palaeobiology
uses
palaeontological,
archaeological
and
other
geohistorical
records
to
study
the
late
Quaternary
transition
of
biosphere
from
its
pristine
past
present-day,
human-altered
state.
Given
scarcity
data
on
recent
extinctions
in
oceans,
are
critical
for
documenting
human-driven
extinction
threats
marine
realm.
The
historical
perspective
can
provide
two
key
insights.
First,
archive
state
pre-industrial
oceans
at
local,
regional
global
scales,
thus
enabling
detection
extirpations
as
well
shifts
species
distribution,
abundance,
body
size
ecosystem
function.
Second,
we
untangle
contributions
natural
anthropogenic
processes
by
centennial-to-millennial
changes
composition
diversity
ecosystems
before
after
onset
major
human
impacts.
This
long-term
identifies
recently
emerging
patterns
that
unprecedented,
allowing
us
better
assess
biodiversity.
Although
global-scale
not
documented
brackish
invertebrates,
studies
point
numerous
extirpations,
declines
functions,
increases
range
fragmentation
dwindling
abundance
previously
widespread
species,
indicating
accumulating
a
debt.
Anais da Academia Brasileira de Ciências,
Journal Year:
2025,
Volume and Issue:
97(2)
Published: Jan. 1, 2025
Abstract
Conservation
paleobiology,
an
expanding
field,
employs
taphonomy
tools
to
investigate
past
environmental
conditions
and
organisms
before
human
impacts,
thereby
addressing
key
conservation
issues.
This
review
examines
the
concepts,
approaches
events
in
emphasizing
aquatic
coastal
often-overlooked
contributions
from
Brazil
South
America.
America,
with
its
vulnerable
biodiversity,
unique
geology
rich
fossil
diversity,
is
a
natural
laboratory
for
understanding
ecosystems—a
considerable
potential
as
center
leading
paleobiology
research.
However,
America
underrepresented,
contributing
only
5%
of
total
publications
(67%
it
Brazil).
Most
American
authors
are
geoscientists
publishing
mainly
on
mollusks,
also
they
produced
fewer
studies
than
those
more
developed
countries.
Noteworthy,
Brazilian
National
Council
Scientific
Technological
Development
ranks
third
globally
funding
articles.
Clearly,
still
predominantly
practiced
nations
geoscience
fields.
Other
challenges
include
underutilization
geohistorical
data
gap
between
theory
practice.
To
address
these
issues,
future
should
integrate
conservationist
perspectives
align
them
societal
needs.
Hence,
anticipated
growth
could
bolster
promote
sustainability
generations.
Paleobiology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 18
Published: March 7, 2024
Abstract
Stratigraphic
paleobiology
uses
a
modern
understanding
of
the
construction
stratigraphic
record—from
beds
to
depositional
sequences
sedimentary
basins—to
interpret
patterns
and
guide
sampling
strategies
in
fossil
record.
Over
past
25
years,
its
principles
have
been
established
primarily
through
forward
numerical
modeling,
originally
shallow-marine
systems
more
recently
nonmarine
systems.
Predictions
these
models
tested
outcrop-scale
basin-scale
field
studies,
which
also
revealed
new
insights.
At
multi-basin
global
scales,
joint
development
biotic
records
has
come
largely
from
macrostratigraphy,
analysis
gap-bound
packages
rock.
Here,
we
present
recent
advances
six
major
areas
paleobiology,
including
critical
tests
Po
Plain
Italy,
mass
extinctions
recoveries,
contrasts
systems,
interrelationships
habitats
architecture,
large-scale
assembly
regional
ecosystems.
We
highlight
potential
for
future
research
that
applies
paleobiological
concepts
studies
climate
change,
geochemistry,
phylogenetics,
structure
conclude
with
need
thinking
paleobiology.
Paleobiology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 28
Published: Nov. 7, 2024
Abstract
Bioturbation
can
increase
time
averaging
by
downward
and
upward
movements
of
young
old
shells
within
the
entire
mixed
layer
accelerating
burial
into
a
sequestration
zone
(SZ),
allowing
them
to
bypass
uppermost
taphonomically
active
(TAZ).
However,
bioturbation
shell
disintegration
concurrently,
neutralizing
positive
effects
mixing
on
averaging.
Bioirrigation
oxygenated
pore-water
promotes
carbonate
dissolution
in
TAZ,
biomixing
itself
mill
weakened
or
microbial
maceration,
and/or
expose
damage
at
sediment–water
interface.
Here,
we
fit
transition
rate
matrices
bivalve
age–frequency
distributions
from
four
sediment
cores
southern
California
middle
shelf
(50–75
m)
assess
competing
averaging,
exploiting
strong
gradient
rates
accumulation
created
historic
wastewater
pollution.
We
find
that
covaries
positively
with
all
sites,
accord
scenario
where
ultimately
fuels
disintegration.
Both
decline
abruptly
base
20-
40-cm-thick,
age-homogenized
surface
three
well-bioturbated
despite
different
accumulation.
In
contrast,
are
very
low
upper
25
cm
an
effluent
site
legacy
toxicity,
recolonization
bioirrigating
lucinid
bivalves.
Assemblages
formed
during
maximum
emissions
vary
strongly
millennial
scales
low-sediment
non-effluent
centennial
scale
was
high
but
recovered
quickly,
decadal
second
high-sedimentation
remained
for
decades.
Thus,
even
though
covary
rates,
reducing
postmortem
survival,
has
net
effect
increasing
skeletal
remains
this
warm-temperate
siliciclastic
shelf.
Cambridge Prisms Extinction,
Journal Year:
2023,
Volume and Issue:
1
Published: Jan. 1, 2023
Near-time
conservation
palaeobiology
uses
palaeontological,
archaeological
and
other
geohistorical
records
to
study
the
late
Quaternary
transition
of
biosphere
from
its
pristine
past
present-day,
human-altered
state.
Given
scarcity
data
on
recent
extinctions
in
oceans,
are
critical
for
documenting
human-driven
extinction
threats
marine
realm.
The
historical
perspective
can
provide
two
key
insights.
First,
archive
state
pre-industrial
oceans
at
local,
regional
global
scales,
thus
enabling
detection
extirpations
as
well
shifts
species
distribution,
abundance,
body
size
ecosystem
function.
Second,
we
untangle
contributions
natural
anthropogenic
processes
by
centennial-to-millennial
changes
composition
diversity
ecosystems
before
after
onset
major
human
impacts.
This
long-term
identifies
recently
emerging
patterns
that
unprecedented,
allowing
us
better
assess
biodiversity.
Although
global-scale
not
documented
brackish
invertebrates,
studies
point
numerous
extirpations,
declines
functions,
increases
range
fragmentation
dwindling
abundance
previously
widespread
species,
indicating
accumulating
a
debt.
Journal of the Geological Survey of Brazil,
Journal Year:
2024,
Volume and Issue:
7(SI2)
Published: May 7, 2024
The
southern
coastal
plain
of
Rio
Grande
do
Sul
state
hosts
essential
fossil
records
both
marine
and
terrestrial
faunas
that
have
provided
invaluable
information
about
the
geological
environmental
Quaternary
history
Brazil.
These
fossils
are
found
in
surface
subsurface
deposits
on
sites
stretching
from
continental
shelf
up
to
lagoons
inland.
time-averaged
lag
formed
exhumed
mixed
together
as
a
result
erosion
original
by
sea-level
oscillations.
Although
lacking
any
precise
stratigraphic
context,
available
numerical
dates
indicate
Middle
late
Pleistocene
ages.
Fossils
removed
waves
today
form
large
Konzentratt-Lagerstätten
beach,
called
concheiros.
areas
occur
barrier-lagoon
depositional
systems,
include
under
higher
than
present
sea
levels
Early-Middle
Holocene
transgressions.
fossiliferous
with
well-defined
context
encompass
fluvial
aeolian
(loess)
paleosols
associated
Middle-late
Santa
Vitória
Alloformation
Cordão
Formation
outcropping
along
Chuy
Creek.
organisms
were
collected
bottom
marginal
terraces
Mirim
Lagoon.
most
not
directly
threat
today,
their
wide
distribution
poses
potential
problems
for
protection.
Current
protection
measures
requests
agencies
preliminary
surveys
rescue
programs
prior
construction
projects,
proposal
marine-coastal
protected
area
is
currently
consideration.
Educational
schools
exhibits
general
public
executed
museums
town
Palmar
contributed
awareness
importance
regional
paleontological
heritage
produced
positive
feedback
results
increased
number
known
region
thanks
communication
local
people.
actions
establish
case
new
developments
emerge
future
could
threaten
fossils.
Radiocarbon,
Journal Year:
2024,
Volume and Issue:
66(2), P. 295 - 305
Published: April 1, 2024
Abstract
Northern
Arizona
University,
Flagstaff,
Arizona,
USA,
recently
installed
a
MIni
CArbon
DAting
System
(MICADAS)
with
gas
interface
system
(GIS)
for
determining
the
14
C
content
of
CO
2
released
by
acid
dissolution
biogenic
carbonates.
We
compare
48
paired
graphite,
GIS,
and
direct
carbonate
determinations
individual
mollusk
shells
echinoid
tests.
GIS
sample
sizes
ranged
between
0.5
1.5
mg
span
0.1
to
45.1
ka
BP
(n
=
42).
A
reduced
major
axis
regression
shows
strong
relationship
graphite
percent
Modern
Carbon
(pMC)
values
(m
1.011;
95%
CI
[0.997–1.023],
R
0.999)
that
is
superior
0.978;
[0.959-0.999],
0.997).
Sixty
pMC
are
within
±0.5
their
counterparts,
compared
26%
values.
The
precision
analyses
approximately
±70
yrs
6.5
decreases
±130
at
12.5
BP.
This
on
par
five
times
larger
than
graphite.
Six
Plio-Pleistocene
samples
yield
finite
ages
when
analyzed
as
but
non-finite
or
GIS.
Our
results
show
dating
carbonates
preferable
an
efficient
alternative
standard
not
required.
Ecology Letters,
Journal Year:
2024,
Volume and Issue:
27(7)
Published: July 1, 2024
Abstract
Species
diversity
increases
with
the
temporal
grain
of
samples
according
to
species–time
relationship
(STR),
impacting
palaeoecological
analyses
because
(time
averaging)
fossil
assemblages
varies
by
several
orders
magnitude.
We
predict
a
positive
relation
between
total
abundance
and
sample
size‐independent
(ADR)
in
an
increase
time
averaging,
determined
decreasing
sediment
accumulation,
should
depress
species
dominance.
demonstrate
that,
contrast
negative
ADR
non‐averaged
living
assemblages,
Holocene
is
positive,
unconditionally
or
when
conditioned
on
energy
availability
gradient.
However,
disappears
demonstrating
that
signature
scaling
induced
variable
averaging.
Conditioning
accumulation
can
identify
remove
effect
caused
providing
avenue
for
unbiased
biodiversity
comparisons
across
space
time.
