Endangered Species Research,
Год журнала:
2023,
Номер
52, С. 177 - 188
Опубликована: Сен. 11, 2023
New
Zealand
sea
lions
Phocarctos
hookeri
have
experienced
a
46%
decline
in
pup
production
the
last
25
yr,
driven
by
female
deaths
trawl
fisheries
around
Auckland
Islands.
The
only
colony
for
this
species
recorded
away
from
subantarctics
and
fishing
impact
is
on
Stewart
Island.
Despite
Island
being
1%
of
species,
it
significant,
as
currently
stable
population
located
an
area
most
on-land
human
impacts,
although
not
potential
pressures.
To
ensure
colony’s
persistence,
more
information
needed
these
lions’
diet,
foraging
behaviour,
local
interactions
management
that
promotes
their
protection.
present
research
investigates
long-term
infers
using
known
behaviour
linking
to
proximal
full-length
whisker
isotope
values.
Previous
studies
found
animals
small
areas
with
consistent
mesopelagic
diving
behaviours.
These
behaviours,
linked
values,
show
consistency
inferred
diet
across
entire
adult
life.
Currently,
there
are
no
commercial
bycatch
issues
However,
precautionary
measures
ensuring
pressure
does
increase
safeguard
deepwater
trawling
finfish
aquaculture
remain
absent
would
be
proactive
steps
should
undertaken
protection
new
Endangered
whole.
Reviews in Aquaculture,
Год журнала:
2024,
Номер
16(3), С. 1160 - 1185
Опубликована: Янв. 25, 2024
Abstract
Aquaculture
contributes
a
significant
portion
of
the
global
aquatic
biomass
destined
for
human
consumption.
Bivalve
and
marine
finfish
aquaculture
operations
require
sea‐based
farm
sites
that
result
in
considerable
interactions
with
natural
environment.
The
addition
feed
waste
physical
structures
(e.g.,
net
pens
longline
mussel
culture)
can
provide
an
attractive
artificial
reef
many
species
studies
have
shown
both
positive
negative
effects
on
surrounding
ecosystem
due
to
wild
sites.
Assessing
these
be
complex,
depending
local
ecosystem,
several
monitoring
techniques
been
used
accurately
determine
associations
decapods
farms.
In
this
review,
we
assessed
main
methods
monitor
aquaculture‐ecosystem
interactions.
advantages
disadvantages
each
technique
are
discussed
suggestions
mitigate
shortfalls
future
outlined.
It
was
evident
combining
methodologies
should
prioritised
lessen
impact
identified
weaknesses
any
given
approach.
Designing
complementary
approaches
may
help
attain
robust
data
further
understand
underlying
proximate
mechanisms.
Reviews in Aquaculture,
Год журнала:
2024,
Номер
16(3), С. 1333 - 1350
Опубликована: Фев. 27, 2024
Abstract
Aquaculture
provides
an
important
and
expanding
source
of
protein
rich
healthy
food
to
the
world.
However,
minimize
environmental
harm
from
aquaculture,
interactions
with
wild
fish
communities
need
be
thoroughly
assessed.
Here,
we
characterize
existing
knowledge
pertaining
such
interactions,
exemplified
Atlantic
salmon
(
Salmo
salar
)
farming
in
open
net
pens
along
Norwegian
coast
potential
consequences
for
cod
Gadus
morhua
populations.
Importantly,
fishery
also
a
rich,
high
quality
economic
value.
We
identify
seven
risk
sources
that
may
affect
behaviour,
physiology,
survival
cod.
Of
particular
importance
is
large
amount
waste
feed
causes
aggregate
around
farms,
thereby
altering
multitude
ecological
including
predation
disease
transmission.
Moreover,
altered
pellets
alter
physiological
processes
cause
mortality
vulnerable
life‐stages
More
research
needed
on
mechanisms
thresholds
harm.
As
most
fisheries
are
found
northern
Norway,
where
climate
change
rapid,
expect
stronger
potentially
more
harmful
between
as
aquaculture
continues
expand.
hope
our
analysis
will
inspire
further
research,
farmed
but
general.
Such
fundamental
development
management
systems
can
reduce
impact
environment.
Abstract
Mariculture
has
been
gradually
regarded
as
an
important
solution
to
the
global
food
production
crisis.
Increasing
scientific
evidence
reveals
that
mariculture
can
provide
a
large
number
of
ecologic
benefits,
in
accordance
with
several
United
Nations
sustainable
development
goals.
However,
previous
studies
mostly
focused
on
negative
impacts
mariculture,
which
may
impede
its
increased
production.
Here,
based
Emergy
Accounting
(EMA),
we
propose
comprehensive
“Multiple
Inputs‐Ecosystem
Service
Multifunctionality‐Multiple
Environmental
Impacts”
(MI‐ESM‐MEI)
evaluation
framework,
trying
describe
mariculture's
overall
environmental
performances
beyond
just
limiting
seafoods.
As
world's
largest
producer,
China
is
taken
example
for
evaluation.
Our
results
show
both
cultured
species
and
cultivation
patterns
determine
performance
mariculture:
seaweed‐raft,
shellfish‐raft,
shellfish‐hanging
cage,
shellfish‐bottom
sowing
others‐bottom
could
be
more
influential
support.
By
identifying
priority
areas
offshore
development,
ecological
benefits
significantly
improved
using
about
27%
China's
territorial
sea
area.
At
present,
Liaoning,
Shandong,
Jiangsu,
Zhejiang
performs
better
than
other
regions.
Under
condition
recognizing
nonnegligible
additional
improvements
are
urgently
needed.
In
addition,
activities
especially
seaweed
help
solve
water
contamination
problem
alleviate
effects
eutrophication
coastal
ecosystems.
For
most
regions,
if
integrated
multi‐trophic
aquaculture
(IMTA)
mode
promoted,
burden
reduced
even
converted
into
benefit.
Ocean Engineering,
Год журнала:
2024,
Номер
305, С. 117877 - 117877
Опубликована: Апрель 30, 2024
An
experimental
kelp
farming
system
for
exposed
ocean
conditions
was
designed,
deployed,
planted
with
and
instrumented
evaluation
of
its
dynamic
response
to
waves,
tides,
currents.
The
farm
featured
a
novel
"lattice"
mooring
design
anchor
lines
cultivation
(horizontal
used
as
growth
substrate)
made
fiberglass
rods.
deployed
at
site
in
Saco
Bay,
Maine
13
m
(MLLW)
water
depth.
There
the
waves
heights
up
5.9
m.
Anchor
line
tension,
tide
wave
height
time
series
were
gathered
processed
into
amplitude
operators
(RAOs)
least
squared
error
linear
regression
models
enabling
recognition
meaningful
patterns
between
forcing
factors
response.
Mean
tensions
shown
increase
nonlinearly
tide.
tension
amplitudes
exhibit
high
sensitivity
both
low
frequency
forcing.
Numerical
free-release
test
simulations
suggested
natural
frequencies
heave
0.91
Hz,
indicating
that
sensitivities
could
be
result
resonance.
Low
disproportionate
explained
by
on
arrays
modulated
group
envelopes.
Instances
magnitude,
potentially
damaging
peak
tensions,
deemed
shock
loads,
prevalent
most
load
cases.
dynamics
including
RAO
magnitudes
sensitive
stiffness
(ratio
resulting
elongation)
and,
some
cases,
significant
amplitude.
Patterns
indicated
additional
elasticity
or
geometric
compliance
use
floatation
less
help
avoid
cause
costly
consequences
amplified
loading
loading.
RAOs
model
results
also
subdued
associated
swell
suggesting
desirable
performance
dominant
extreme
storm
events.
With
proposed
improvements,
suggests
merit
robust
durable
macroalgae
biomass
production
platform.
New Zealand Journal of Marine and Freshwater Research,
Год журнала:
2024,
Номер
unknown, С. 1 - 23
Опубликована: Апрель 1, 2024
Information
on
marine
mammal
habitat
use
in
coastal
areas
can
provide
a
better
understanding
of
anthropogenic
effects
species.
Admiralty
Bay,
New
Zealand
has
extensive
near-shore
mussel
farms
and
is
an
important
dusky
dolphin
(Lagenorhynchus
obscurus)
foraging
habitat.
Prior
research
indicated
declining
trend
regional
abundance
from
the
late
1990s
to
mid-2000s.
We
describe
behaviour,
patch
movement
patterns
Bay
2011–2012
compare
findings
previous
capture
long-term
trends.
Sampling
methods
included
small-boat
group
follows
photo-identification
shore-based
theodolite
tracking.
Dolphin
encounter
rate,
mean
size,
individual
resighting
rate
showed
negative
years.
Coordinated
prey
ball
herding,
technique
documented
years,
was
rarely
observed
during
this
study.
Dolphins
were
more
likely
forage
near
(excluding
specialised
herding),
though
they
seldom
entered
farms.
Near
shore,
swimming
speed
slower,
reorientation
higher,
linearity
lower
presence
than
their
absence.
This
builds
upon
prior
studies,
suggesting
continued
decline
presence,
highlights
differences
human-altered
ecosystem.
