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.
Landscape Ecology,
Год журнала:
2024,
Номер
39(12)
Опубликована: Ноя. 20, 2024
The
expansion
of
agricultural
lands
threatens
biodiversity
maintenance
across
the
tropics.
Although
some
agroforestry
systems
may
be
biodiversity-friendly,
their
conservation
value
likely
depends
on
landscape
and
regional
contexts
in
which
they
are
embedded—a
poorly
tested
hypothesis.
We
assessed
shaded
cocoa
agroforests
for
bees
social
wasps,
evaluated
whether
such
remaining
forest
cover
at
and/or
scales.
Using
a
paired
design,
we
compared
α-
(species
number)
β-diversity
each
taxon
between
neighbouring
rainforests
30
landscapes
from
three
regions
with
different
deforestation
levels
Brazilian
Atlantic
Forest.
species
number
ratio
(cocoa/forest)
related
to
landscape-scale
cover,
relationship
differed
among
(interacting
effect).
Cocoa
held
more
bee
wasp
than
forests,
habitats
was
moderate
(bees)
high
(wasps).
Bees'
peaked
intermediate-deforested
region,
decreased
increasing
indicating
that
both
land
uses
shared
forested
landscapes,
especially
high-
regions.
Yet,
varied
only
within
regions,
sharing
low-deforested
region.
Our
findings
highlight
wasps
local
cover.
With
agroforest
being
highly
permeable
matrix
increases
higher
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.
