Insects,
Год журнала:
2024,
Номер
15(12), С. 982 - 982
Опубликована: Дек. 11, 2024
Conservation
of
bumblebee
populations
is
essential
because
their
role
as
pollinators.
Declines
in
abundance
have
been
documented
recent
decades,
mostly
attributed
to
agricultural
intensification,
landscape
simplification
and
loss
semi-natural
grasslands.
In
this
study,
we
investigated
the
effects
composition
on
at
different
spatial
scales
476
grassland
sites
southern
Sweden.
The
area
arable
land
had
a
negative
effect
total
all
scales.
This
was
most
pronounced
for
short-tongued
bumblebees,
species
typical
forested
landscapes,
with
medium
large
colony
sizes
early
queen
emergence.
clear
up
1
km,
affecting
bumblebees
both
landscapes
calls
action
adapt
farming
practices
ensure
conservation,
e.g.,
by
reducing
pesticide
use,
improving
crop
diversity
promoting
presence
floral
resources
alternative
habitats,
such
species-rich
field
margins.
Journal of Biogeography,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 20, 2025
ABSTRACT
Aim
Land
use
and
land
cover
(LULC)
change
is
the
main
driver
of
biodiversity
loss,
causing
habitat
loss
fragmentation
that
hinders
species
movement
negatively
impacts
populations.
While
fragments
are
structurally
disconnected,
functional
connectivity
can
still
occur
depending
on
species'
dispersal
abilities.
Incorporating
landscape
into
restoration
planning
helps
identify
strategic
areas
significantly
enhancing
connectivity.
Here,
we
present
an
unprecedented,
nationwide
continuous
spatial
layer
representing
each
restorable
pixel's
contribution
to
connectivity,
using
Brazil
as
a
case
study.
Location
Brazil.
Methods
We
performed
dynamic
pixel‐based
analysis
across
Brazilian
biome
assess
potential
increases
in
Integral
Index
Connectivity
(IIC)
resulting
from
restoring
pixel
landscape.
For
that,
defined
hypothetical
with
medium,
high
very
abilities
calculated
IIC
for
different
natural
LULC
biome.
Then,
ran
Results
Our
dataset
represents
relative
landscape,
considering
all
Since
assessing
contributions
individual
pixels
overall
most
values
expectedly
low.
However,
highest
show
stand‐alone
biome‐wide
thus
were
interpreted
priorities
restoration.
Notably,
nested
regions
restoration,
trend
higher
priority
rankings
(e.g.,
top
5%
important
regions)
being
surrounded
by
subsequent
priorities.
Main
Conclusions
study
first
evaluate
impact
efforts
biomes.
identified
within
biome,
providing
valuable
information
guide
decision‐making
policy
implementation.
The
innovative
used
be
replicated
other
regions,
aiming
make
more
efficient.
Aquatic Conservation Marine and Freshwater Ecosystems,
Год журнала:
2025,
Номер
35(1)
Опубликована: Янв. 1, 2025
ABSTRACT
The
idle
crayfish
(
Austropotamobius
bihariensis
Pârvulescu,
2019),
endemic
to
Romania's
Apuseni
Mountains,
urgently
requires
a
specific
conservation
plan.
Due
its
recent
description,
efforts
have
been
limited,
highlighting
the
need
for
immediate
and
practical
recommendations
ensure
protection.
Over
13
years,
field
observations
were
conducted
evaluate
population
trends
identify
threats
following
IUCN
standards.
Additionally,
geospatial
assessments
predictive
modelling
employed
estimate
both
optimal
habitat
current
size
under
three
distinct
scenarios.
primary
identified
include
poor
forest
management,
extreme
drought,
anthropogenic
development
riverbed
alterations,
all
contributing
declines
in
abundance.
most
severe
impacts
arise
when
these
pressures
converge
at
single
site,
compounded
by
chronic,
low‐virulence
plague
infection
(A‐haplogroup).
total
is
estimated
31,150
(±
449.9
SE)
individuals,
with
1,163,754
m
2
of
suitable
habitat,
which
only
37.9%
lies
within
protected
areas
realistic
scenario.
Poor
water
quality
was
found
significantly
reduce
modelled
size.
In
light
findings,
we
propose
series
targeted
actions
tailored
each
area
highlight
importance
extending
measures
beyond
their
boundaries.
recommend
implementing
‘ark
sites’
concept
regions
ecological
conditions,
stable
populations
genetic
diversity,
safeguard
species
through
effective
management.
Restoration Ecology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 31, 2025
In
a
recent
Opinion
article,
Watts
and
Hughes
(W&H)
suggest
that
habitat
fragmentation
is
“generally
bad
for
restoration.”
We
found
W&H
timely
given
progress
in
the
conversation
on
fragmentation,
we
agree
importance
of
assessing
restoration
ecology.
At
same
time,
some
claims
to
be
unsubstantiated.
there
likely
are
situations
where
good”
setting,
identify
an
urgent
need
test
empirically
how
biodiversity
responds
context.
Such
tests
will
tell
us
when
spatial
pattern
restored
matters,
informing
efforts
expected
coming
decades
fulfill
historical
commitments
sustain
globally.
Journal of Applied Ecology,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 1, 2025
Abstract
The
landscape‐scale
impacts
of
habitat
subdivision
(fragmentation
per
se)
on
biodiversity
are
not
fully
resolved.
While
smaller
patches
usually
contain
more
species
for
equal
total
area,
many
implications
this
remain
unclear.
For
example,
do
areas
and
larger
provide
equivalent
value?
How
might
change
over
time
under
differing
matrix
conditions?
To
help
address
these
knowledge
gaps,
we
developed
an
indicator
relative
value
based
a
species‐individual
null
model.
We
used
the
to
compare
sets
ordered
in
small‐to‐large
large‐to‐small
orders,
building
hierarchical
Bayesian
regression
models
test
role
since
patch
creation
contrasting
conditions.
This
allowed
us
assess
85
metacommunities
inhabiting
fragmented
landscapes
(1354
patches,
>4500
species).
expected
comparable
following
due
unpaid
extinction
debts,
would
determine
direction
time,
harsher
increasing
patches.
Averaged
quality,
probability
density
was
mostly
negative,
suggesting
slightly
greater
among
pattern
consistent
across
taxonomic
groups,
although
amphibians
reptiles
were
most
affected,
invertebrates
least
so.
Larger
within
20
years
creation,
but
increased
any
type,
whereas
remained
constant
Matrix
conditions
mediated
difference:
after
100
light
matrix,
all
sizes
essentially
value,
while
still
favoured
harsh
matrix.
Policy
.
In
long‐fragmented,
landscapes,
small
large
apparently
offer
per‐unit‐area
value.
Conversely,
retain
speculate
that
reflects
‘colonization
credit’,
which
occur
initial
loss
fragmentation‐sensitive
disturbed
landscapes.
Overall,
analyses
support
need
maintain
enhance
area—regardless
configuration—for
conservation,
especially
long‐fragmented
with
matrices.
Tropical Conservation Science,
Год журнала:
2025,
Номер
18
Опубликована: Апрель 1, 2025
The
ongoing
deforestation
process
across
the
globe
is
reducing
extent
of
suitable
habitat
for
forest-specialist
species.
cross-habitat
spillover
hypothesis
posits
that
in
such
a
scenario,
some
species
may
be
compelled
to
use
supplementary
resources
from
adjacent
anthropogenic
matrix.
Consequently,
compositional
differentiation
(beta
diversity)
between
forest
remnants
and
matrix
should
decrease
(i.e.
biotic
homogenization)
more
deforested
landscapes.
We
tested
this
prediction
by
assessing
bird
assemblages
mountain
region
Guerrero,
Mexico.
surveyed
birds
nine
landscapes
with
different
cover.
Within
each
landscape,
we
measured
beta
diversity
(D
β
)
fragments
surrounding
then
assessed
relationship
D
landscape
separately
complete
assemblage,
habitat-generalist
birds,
because
loss
particularly
evident
when
forest-dependent
birds.
generalized
linear
models
indicated
that,
as
expected,
decreased
lower
Such
was
significant
assemblage
but
not
Our
findings
support
indicate
contributes
homogenization
human-modified
could
also
related
an
alternative
non-exclusive
mechanism:
extirpation
rare,
non-ubiquitous
To
conserve
landscapes,
prevent
promote
adequate
management
strategies
(e.g.
leaving
standing
native
trees,
avoiding
hunting,
removing
feral
predators)
threats
they
