Biodiversity Data Journal,
Год журнала:
2023,
Номер
11
Опубликована: Сен. 15, 2023
We
present
a
checklist
of
annelids
from
recent
United
Kingdom
Seabed
Resources
(UKSR)
expeditions
(Abyssal
Baseline
-
ABYSSLINE
project)
to
the
eastern
abyssal
Pacific
Clarion-Clipperton
Zone
(CCZ)
polymetallic
nodule
fields,
based
on
DNA
species
delimitation,
including
imagery
voucher
specimens,
Darwin
Core
(DwC)
data
and
links
vouchered
specimen
material
new
GenBank
sequence
records.
This
paper
includes
genetic
for
129
339
records
is
restricted
that
is,
in
general,
too
poor
condition
describe
formally
at
this
time,
but
likely
contains
many
science.
make
these
available
both
aid
future
taxonomic
studies
CCZ
will
be
able
link
back
specimens
better
underpin
ongoing
ecological
potential
deep-sea
mining
impacts
using
principles
FAIR
(Findable,
Accessible,
Interoperable,
Reusuable)
all.
include
genetic,
all
associated
metadata
format
Zone,
Pacific,
with
Global Ecology and Biogeography,
Год журнала:
2025,
Номер
34(1)
Опубликована: Янв. 1, 2025
ABSTRACT
Aim
We
assess
the
role
of
spatial
distance
and
depth
difference
in
shaping
beta
diversity
patterns
across
abyssal
seascape
regions.
measured
decrease
faunistic
similarity
northeast
Pacific
seafloor,
to
test
whether
species
turnover
rates
differ
between
deep
shallow‐abyssal
biogeographical
provinces
these
vary
functionally
or
taxonomically
different
biotic
groups.
Location
Abyssal
NE
Ocean.
Time
Period
Present.
Major
Taxa
Studied
Benthic
Invertebrates
(13
Phyla).
Methods
examined
relationship
compositional
(𝛽
sim
)
distance,
distance‐decay,
benthic
megafauna
communities
(animals
>
10
mm)
based
on
seabed
imagery
data
(>
36,000
specimens
402
species)
collected
28
locations
spanning
a
total
4000
km.
By
comparing
statistical
parameters
(intercept
slope)
decay
curves,
we
investigated
distance‐decay
(i)
above
below
carbonate
compensation
(~4400
m
at
N
Pacific),
(ii)
among
taxa
with
contrasting
life‐habits
dominant
phyla.
Results
found
steeper
4400
variations
Turnover
was
higher
for
facultatively
growing
hard‐substratum
patches
(polymetallic
nodules)
than
sediment‐dwelling
swimming
organisms.
Cnidaria
Porifera,
respectively,
depicted
most
least
evident
decays
community
similarity.
Main
Conclusions
demonstrate
utility
combining
imaging
modelling
capture
macroecological
poorly
explored
deep‐sea
ecosystems.
Our
results
suggest
that
chemical
boundaries
associated
are
very
relevant
niche‐sorting
mechanism
driving
large‐scale
beta‐diversity
an
association
dispersal
limitation
communities.
These
findings
have
important
implications
biodiversity
conservation
plans
ocean,
amid
need
protect
vast
ecosystems
from
globally
rising
human
threats.
Despite
the
importance
of
visual
observation
in
ocean,
we
have
imaged
a
minuscule
fraction
deep
seafloor.
Sixty-six
percent
entire
planet
is
ocean
(≥200
m),
and
our
data
show
that
visually
observed
less
than
0.001%,
total
area
approximately
tenth
size
Belgium.
Data
gathered
from
44,000
deep-sea
dives
indicate
also
seen
an
incredibly
biased
sample.
Sixty-five
all
situ
seafloor
observations
dataset
were
within
200
nm
only
three
countries:
United
States,
Japan,
New
Zealand.
Ninety-seven
compiled
been
conducted
by
just
five
Zealand,
France,
Germany.
This
small
sample
problematic
when
attempting
to
characterize,
understand,
manage
global
ocean.
Nature Ecology & Evolution,
Год журнала:
2023,
Номер
7(9), С. 1388 - 1397
Опубликована: Июль 24, 2023
Abstract
Abyssal
seafloor
communities
cover
more
than
60%
of
Earth’s
surface.
Despite
their
great
size,
abyssal
plains
extend
across
modest
environmental
gradients
compared
to
other
marine
ecosystems.
However,
little
is
known
about
the
patterns
and
processes
regulating
biodiversity
or
potentially
delimiting
biogeographical
boundaries
at
regional
scales
in
abyss.
Improved
macroecological
understanding
remote
environments
urgent
as
threats
widespread
anthropogenic
disturbance
grow
deep
ocean.
Here,
we
use
a
new,
basin-scale
dataset
show
existence
clear
zonation
5,000
km
span
Clarion–Clipperton
Zone
(northeast
Pacific),
an
area
targeted
for
deep-sea
mining.
We
found
two
pronounced
biogeographic
provinces,
shallow-abyssal,
separated
by
transition
zone
between
4,300
4,800
m
depth.
Surprisingly,
species
richness
was
maintained
this
boundary
phylum-level
taxonomic
replacements.
These
transitions
are
probably
related
calcium
carbonate
saturation
taxa
dependent
on
structures,
such
shelled
molluscs,
appear
restricted
shallower
province.
Our
results
suggest
geochemical
climatic
forcing
distributions
populations
over
large
spatial
provide
potential
paradigm
macroecology,
opening
new
basis
regional-scale
research
conservation
strategies
largest
biome.
Frontiers in Marine Science,
Год журнала:
2024,
Номер
11
Опубликована: Апрель 17, 2024
Introduction
Technological
developments
have
facilitated
the
collection
of
large
amounts
imagery
from
isolated
deep-sea
ecosystems
such
as
abyssal
nodule
fields.
Application
a
monitoring
tool
in
these
areas
interest
for
exploitation
is
extremely
valuable.
However,
order
to
collect
comprehensive
number
species
observations,
thousands
images
need
be
analysed,
especially
if
high
diversity
combined
with
low
abundances
case
As
visual
interpretation
volumes
and
manual
extraction
quantitative
information
time-consuming
error-prone,
computational
detection
tools
may
play
key
role
lessen
this
burden.
Yet,
there
still
no
established
workflow
efficient
marine
image
analysis
using
deep
learning–based
computer
vision
systems
task
fauna
classification.
Methods
In
study,
dataset
2100
polymetallic
fields
eastern
Clarion-Clipperton
Fracture
zone
SO268
expedition
(2019)
was
selected
investigate
potential
machine
learning–assisted
annotation
workflows.
The
Machine
Learning
Assisted
Image
Annotation
method
(MAIA),
provided
by
BIIGLE
system,
applied
different
set-ups
trained
manually
annotated
data.
results
computed
were
compared
those
obtained
biologists
regarding
accuracy
(i.e.
recall
precision)
time.
Results
Our
show
that
MAIA
can
general
object
species)
satisfactory
(90.1%
13.4%
precision),
when
considered
one
intermediate
step
workflow.
We
also
investigated
performance
training
data,
tuned
individual
morphological
groups
impact
sediment
coverage
Discussion
conclude
that:
a)
steps
must
taken
enable
scientists
access
more
data
CCZ
improve
system’s
b)
combination
posteriori
filtering
has
higher
efficiency
than
fully
analyses.
Proceedings of the National Academy of Sciences,
Год журнала:
2024,
Номер
121(15)
Опубликована: Апрель 3, 2024
Structures
from
the
Stone
Age
can
provide
unique
insights
into
Late
Glacial
and
Mesolithic
cultures
around
Baltic
Sea.
Such
structures,
however,
usually
did
not
survive
within
densely
populated
Central
European
subcontinent.
Here,
we
...The
Sea
basins,
some
of
which
only
submerged
in
mid-Holocene,
preserve
structures
that
on
land.
Yet,
discovery
these
features
is
challenging
requires
cross-disciplinary
approaches
between
archeology
...
Communications Biology,
Год журнала:
2024,
Номер
7(1)
Опубликована: Авг. 19, 2024
The
deep-sea
remains
the
biggest
challenge
to
biodiversity
exploration,
and
anthropogenic
disturbances
extend
well
into
this
realm,
calling
for
urgent
management
strategies.
One
of
most
diverse,
productive,
vulnerable
ecosystems
in
deep
sea
are
sponge
grounds.
Currently,
environmental
DNA
(eDNA)
metabarcoding
is
revolutionising
field
monitoring,
yet
complex
benthic
remain
challenging
assess
even
with
these
novel
technologies.
Here,
we
evaluate
effectiveness
whole-community
characterise
metazoan
diversity
grounds
across
North
Atlantic
by
leveraging
natural
eDNA
sampling
properties
sponges
themselves.
We
sampled
97
tissues
from
four
species
North-Atlantic
biogeographic
regions
screened
them
using
universal
COI
barcode
region.
recovered
unprecedented
levels
taxonomic
per
unit
effort,
especially
phyla
Chordata,
Cnidaria,
Echinodermata
Porifera,
at
least
406
found
our
study
area.
These
assemblages
identify
strong
spatial
patterns
relation
both
latitude
depth,
detect
emblematic
currently
employed
as
indicators
habitats.
remarkable
performance
approach
different
sponges,
whole
animal
kingdom,
illustrates
vast
potential
samplers
high-resolution
biomonitoring
solutions
highly
diverse
ecosystems.
Journal of Agrarian Change,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 17, 2024
Abstract
Recent
years
have
seen
a
sharp
uptick
in
efforts
to
expedite
resource
extraction
in,
and
expand
biodiversity
conservation
to,
Areas
Beyond
National
Jurisdiction
(ABNJ),
the
~70%
of
oceans
outside
state
space.
In
this
symposium
piece,
we
explore
co‐constitution
parallel
acceleration
economic
exploitation
that
is
unfolding
ways
unique
high
seas,
but
consistent
with
global
patterns
wherein
coupling
encloses
space
for
capitalist
value
extraction.
These
coupled
tendencies
are
part
expanded
ocean
regulation
and,
ABNJ,
they
form
state‐capital
advancement
into
one
remaining
world
frontiers.
We
extraction‐conservation
nexus
two
contemporary
ABNJ
negotiations:
1)
Implementing
Agreement
under
United
Nations
Convention
on
Law
Sea
(UNCLOS)
Conservation
Sustainable
Use
Marine
Biological
Diversity
2)
International
Seabed
Authority's
development
an
regime
deep‐seabed
mining
Area.
Our
findings
build
insights
from
agrarian
political
economy
ecology
establish
–
rather
than
incommensurability
extractive
activities
terrestrial
spaces
draw
out
arenas
ecologically
complex,
political‐economic
grey
zone
uninhabited
(by
humans),
non‐state
planet.
This
work
contributes
placing
seas
emergent
blue
within
critical
scholarship
describes
explores
conservation‐extraction
its
consequences.