Intentional release of native species undermines ecological stability
Proceedings of the National Academy of Sciences,
Год журнала:
2023,
Номер
120(7)
Опубликована: Фев. 7, 2023
The
massive
release
of
captive-bred
native
species
(“intentional
release”)
is
a
pervasive
method
to
enhance
wild
populations
commercial
and
recreational
species.
However,
such
external
inputs
may
disrupt
the
sensitive
interactions
that
allow
competing
coexist,
potentially
compromising
long-term
community
stability.
Here,
we
use
theory
data
stream
fish
communities
show
intentional
destabilizes
dynamics
with
limited
demographic
benefit
enhanced
Our
predicted
intensifies
interspecific
competition,
facilitating
competitive
exclusion
unenhanced
otherwise
stably
coexist.
In
parallel,
excessive
input
individuals
suppressed
natural
recruitment
via
intensified
within-species
competition.
Consequently,
ecological
reduced
density
unstable
temporal
dynamics.
Consistent
this
prediction,
showed
greater
fluctuations
fewer
taxonomic
richness
in
rivers
intensive
hatchery
salmon—a
major
fishery
resource
worldwide.
findings
alarm
current
overreliance
on
accelerate
global
biodiversity
loss
undesired
consequences
for
provisioning
ecosystem
services.
Язык: Английский
Agricultural Ecosystems
Elsevier eBooks,
Год журнала:
2023,
Номер
unknown, С. 1 - 26
Опубликована: Окт. 4, 2023
Язык: Английский
Assessing population viability and management strategies for species recovery of the critically endangered Puerto Rican parrot
Animal Conservation,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 13, 2024
Abstract
Recovery
of
endangered
species
is
challenging
and
lengthy,
especially
when
it
involves
reintroduction
dynamic
environmental
conditions.
Because
managers
often
need
to
decide
between
many
management
strategies
with
uncertain
outcomes,
periodically
assessing
progress
toward
recovery
using
population
viability
analysis
(PVA)
can
help
guide
decision‐making.
We
developed
a
PVA
for
the
critically
Puerto
Rican
parrot
(
Amazona
vittata
)
evaluate
current
status
potential
future
reach
goals
set
in
Plan.
Having
grown
from
their
nadir
13
birds
1976
686
2021,
effort
has
made
great
progress.
Using
15
years
data,
we
built
an
individual‐based
that
included
interactions
two
captive
three
wild
populations
connected
via
annual
releases.
If
continues
as
planned,
have
no
moderate
risks
extinction
(0–32%)
over
next
100
years.
However,
remain
dependent
on
releases
sustain
growth,
targets
stable
growth
connectivity
not
yet
been
reached.
Our
suggests
hurricanes
are
impediment
reaching
impact
some
more
than
others
based
geography.
Projections
climate‐change‐induced
higher
hurricane
resulted
being
less
likely
stabilize.
identified
demographic
rates
associated
could
positively
populations:
increasing
reproduction
(e.g.,
artificial
nests,
improving
nest
success)
decreasing
first‐year
mortality
targeted
predator
control).
Based
our
understanding
demographics,
will
continue
be
management‐dependent
unless
altered.
As
data
gathered,
data‐sparse
face
change,
iterations
this
model
re‐evaluate
progress,
update
strategies,
provide
support
deciding
if
delist
iconic
species.
Язык: Английский
Reintroduced Oriental Stork survival differed by mitochondrial DNA haplotype
Ornithological Applications,
Год журнала:
2024,
Номер
126(2)
Опубликована: Янв. 30, 2024
Abstract
Long-lived
territorial
bird
populations
often
consist
of
a
few
breeding
adults
and
many
nonbreeding
individuals.
Some
are
threatened
by
anthropogenic
activities,
because
human
conflicts
for
high-quality
habitat.
Therefore,
habitat
restoration
projects
have
been
widely
implemented
to
improve
avian
population
status.
In
conjunction
with
restoration,
conservation
translocations
increasingly
implemented.
Adequate
nonbreeder
survival
can
be
key
factor
in
the
success
these
attempts
birds
may
represent
reservoirs
replacement
breeders.
The
maintenance
pair
numbers
is
also
influenced
transition
rate
nonbreeders
reintroduction
Oriental
Stork
(Ciconia
boyciana),
long-lived,
territorial,
endangered
species,
was
initiated
Japan
2005
using
captive
hopes
increasing
population’s
use
restored
Our
objective
this
study
elucidate
factors
determining
reintroduced
stork
recruitment
populations.
We
estimated
participation
sex,
age,
generation,
wild-born
or
not,
haplotypes,
status
storks
during
2005–2022
Bayesian
hierarchical
models.
There
no
significant
difference
between
However,
lower
than
released
birds,
which
related
longer-distance
natal
dispersal
new
generations.
Accelerated
around
areas
preventive
measures
collision
human-built
structures
should
sustained
growth
A
low
detected
specific
mitochondrial
DNA
(mtDNA)
haplotype
that
accounts
majority
population.
This
phenomenon
might
explained
mtDNA-encoded
mutations.
Moreover,
release
history
contribute
an
increase
proportion
wild.
Язык: Английский
Evaluating the effects of nest management on a recovering raptor using integrated population modeling
Ecosphere,
Год журнала:
2024,
Номер
15(10)
Опубликована: Окт. 1, 2024
Abstract
Evaluating
population
responses
to
management
is
a
crucial
component
of
successful
conservation
programs.
Models
predicting
growth
under
different
scenarios
can
provide
key
insights
into
the
efficacy
specific
actions
both
in
reversing
decline
and
maintaining
recovered
populations.
Bald
eagle
(
Haliaeetus
leucocephalus
)
United
States
has
seen
many
successes
over
last
50
years,
yet
extent
which
bald
Arizona,
an
important
within
Southwest
region,
remains
area
debate.
Estimates
species'
trend
evaluation
ongoing
nest‐level
practices
are
needed
inform
decisions.
We
developed
Bayesian
integrated
model
(IPM)
viability
analysis
(PVA)
using
36‐year
dataset
assess
Arizona
dynamics
their
underlying
demographic
rates
current
possible
future
practices.
estimated
that
grew
from
77
females
1993
180
2022,
average
yearly
increase
3%.
Breeding
sites
had
trained
personnel
(i.e.,
nestwatchers)
stationed
at
active
nests
mitigate
human
disturbance
28%
higher
reproductive
output
than
without
this
protection.
Uncertainty
around
trends
was
high,
but
continued
nestwatcher
program
were
less
likely
predict
abundance
declines
nestwatchers.
Here,
IPM‐PVA
framework
provides
useful
tool
for
estimating
effectiveness
past
exploring
needs
delisted
population,
highlighting
action
may
be
necessary
maintain
even
after
meeting
certain
recovery
criteria.
Язык: Английский
High survival promotes persistence in a reintroduced population of Common Crane (Grus grus)
Ibis,
Год журнала:
2023,
Номер
165(4), С. 1129 - 1144
Опубликована: Фев. 22, 2023
Reintroductions
are
increasingly
used
for
re‐establishing
populations,
though
the
documented
success
rates
variable.
Success
is
typically
measured
by
survival
and
breeding
of
released
individuals
subsequent
establishment
growth
population.
However,
few
studies
quantify
demographic
reintroduced
populations
long‐lived
species,
with
slower
dynamics
lower
reproductive
rates,
generations,
which
determine
population
persistence,
often
unknown.
We
document
reintroduction
Common
Crane
Grus
grus
to
south‐west
England
in
UK,
using
analysis
modelling
whether
overarching
aim
establishing
a
self‐sustaining
likely
be
achieved.
Between
2010
2014,
93
Cranes
were
hatched
from
wild
eggs,
custom‐reared
soft‐released
into
suitable
habitat.
Survival
all
age‐classes
was
apparently
higher
than
healthy
individuals,
particularly
juvenile
age‐classes,
females
males.
Productivity
relatively
low,
but
increased
age.
Assuming
that
generations
at
levels
estimated
captive‐reared
population,
slow
positive
predicted
over
next
30
years.
Sensitivity
analyses
showed
persistence
this
sensitive
even
slight
decrease
values
adult
survival,
impacted
lesser
extent
productivity.
This
study
highlights
ability
achieve
despite
low
productivity
when
exceptionally
high.
It
also
illustrates
need
long‐term
monitoring
establish
animals
have
life
histories:
9
years
after
initial
releases,
remains
dominated
first‐generation
birds
skewed
transient
age‐structure
late
onset
success.
Язык: Английский
Spatial- and Temporal-Trajectory Analysis of the Crested Ibis (Nipponia nippon) by Fusing Multiple Sources of Data
Animals,
Год журнала:
2023,
Номер
13(2), С. 237 - 237
Опубликована: Янв. 9, 2023
The
Crested
Ibis
(Nipponia
nippon)
is
an
endangered
animal
with
extremely
high
ecological,
humanistic,
and
scientific
value.
However,
this
species
still
faces
survival
challenges,
due
to
rapidly
shrinking
foraging
grounds,
the
serious
interference
of
human
behavior,
increased
habitat
requirements.
Geographical
environment
a
significant
factor
affecting
behavior-pattern
analysis
protection.
spatial
temporal
trajectory
contains
location
period
information,
vital
record
Ibis'
habits,
basis
all
research.
Nevertheless,
there
are
only
handful
studies
on
missing
data
fusing
multiple
sources
environmental
data-research
methods.
We
studied
use
tracked
lbis
by
data-sources
in
China.
This
paper
adopts
LSTM
(long
short-term
memory)
model
supplement
perform
cluster
mining;
random
forest
used
predict
fitting
accuracy
(R2
=
84.9%).
results
show
that
distribution-pattern
characterized
altitude
proximity
woodland
rivers.
Additionally,
dependence
village
implicates
agricultural
activities
positively
impacting
its
reproduction.
provides
complete
method
for
analyzing
multi-source
data,
which
crucial
protecting
reproduction
Ibis.
Язык: Английский