Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Sept. 9, 2023
Abstract
Context.
Conservation
of
endangered
species
necessitates
an
in-depth
understanding
their
ecological
requirements.
Particularly
in
landscape
ecology,
the
behavioural
tendencies
threatened
butterfly
Gotland,
a
biodiversity-rich
island
Baltic
Sea,
become
crucial.
Objectives.
The
primary
aim
this
study
was
to
elucidate
movement
patterns
three
species—Euphydryas
aurinia,
Parnassius
apollo,
and
Phengaris
arion—in
Gotland
identify
influence
specific
land
characteristics
on
these
patterns.
Methods.
conducted
from
2017
2020
within
60
km²
area
Gotland.
Data
collection
involved
29,584
captures,
encompassing
16,223
distinct
individuals.
Variables
such
as
open
vegetated
land,
ground
moisture
index,
forest
cover
were
assessed.
Results.
Among
4821
arrivals
5083
departures
documented,
exhibited
differential
responses
evaluated
habitat
features.
Both
E.
aurinia
and
P.
apollo
displayed
positive
density-dependent
dispersal,
while
arion's
movements
not
significantly
associated
with
any
features
examined.
Landscape
properties
like
index
statistically
influenced
likelihood
arrival
departure.
Conclusions.
accentuates
intricate
relationship
between
subject
species.
It
has
broader
implications
for
targeted
management
strategies
that
would
benefit
populations
Biodiversity and Conservation,
Journal Year:
2024,
Volume and Issue:
33(10), P. 2885 - 2910
Published: July 9, 2024
Abstract
The
dynamic
interplay
between
anthropogenic
activities
and
biodiversity
conservation
necessitates
a
nuanced
understanding
of
habitat
change,
especially
in
contexts
marked
by
transitions
from
grasslands
to
forested
areas.
This
investigation
utilised
three
threatened
butterfly
species—the
Marsh
Fritillary,
Apollo,
Large
Blue—as
models
explore
how
grassland
associated
species
respond
altered
environmental
conditions.
methodology
encompassed
extensive
field
surveys
statistical
analyses
with
ecological
niche
modelling
determine
their
current
future
distributions
on
the
Island
Gotland.
were
surveyed
under
distinct
years
2017
2020
total
3333
hectares
6000
hectare
area—the
Fritillary
(1232
hectares),
Apollo
2019
(2346
Blue
(2256
hectares).
Results
revealed
that
estimated
extents
suitable
habitats
49,104
for
(15.6%
island),
45,646
(14.5%),
33,089
(10.5%).
In
general,
increased
forest
shrub
cover
decreased
heterogeneity
negatively
affected
occupancy,
but
each
exhibited
unique
preferences.
predictive
demonstrated
continued
succession
would
reduce
amount
predicted
be
generated
alarming
forecasts—a
twofold
increase
suggests
declines
41%,
47%,
65%
Blue,
respectively.
Given
these
findings,
proactive
measures
are
imperative
strategically
managing
preserve
landscape
accommodate
diverse
needs.
study
is
important
management
providing,
crucial
insights
amid
changes.
Insect Conservation and Diversity,
Journal Year:
2024,
Volume and Issue:
17(6), P. 1033 - 1045
Published: July 14, 2024
Abstract
This
study
investigates
the
ecology
of
three
threatened
butterfly
species
on
a
60
km
2
site
in
Gotland,
Southeast
Sweden,
using
mark–recapture
methods
from
2017
to
2020.
Nearly
30,000
captures
were
recorded,
with
average
lifespans
6
days
for
Euphydryas
aurinia
(Lepidoptera:
Nymphalidae)
and
Parnassius
apollo
Papilionidae)
Phengaris
arion
Lycaenidae).
Population
size,
density
maximum
flight
distances
varied
between
species,
E.
at
7.2
km,
P.
6.4
2.5
km.
Movement
data
showed
lognormal
kernel
fit
better
than
gamma,
negative
exponential
half‐normal
kernels
distance
travelled
per
time
unit
across
sexes.
Generalised
linear
models
revealed
significant
positive
density‐dependent
emigration
immigration
all
species.
Despite
available
suitable
habitats,
these
face
threats
limestone
quarry
expansions,
agricultural
intensification,
modified
forestry
practices,
natural
succession
climate
change,
highlighting
need
proactive
conservation
strategic
habitat
management.
iScience,
Journal Year:
2024,
Volume and Issue:
27(12), P. 111422 - 111422
Published: Nov. 19, 2024
Grazing
at
near-natural
stocking
rates
is
increasingly
rare,
whereas
abandonment
and
overgrazing
common,
despite
both
leading
to
loss
of
threatened
species.
Here,
we
evaluate
a
biodiversity-promotion
strategy
beef-producing
company
involving
livestock
grazing
for
conservation.
Using
field
surveys,
national
biodiversity
map,
farmer
interviews,
the
conservation
potential
farmers
committing
scheme.
Most
practiced
summer
grazing,
and-contrary
their
pledge-primarily
grazed
areas
low
value,
with
far
above
carrying
capacity.
We
conclude
that
beef
brand
will
only
have
real
value
species
if
committed
to,
held
accountable
scientifically
informed
Our
results
point
rural
traditions,
legal
regulations,
economic
incentives
as
factors
obstructing
beneficial
practice.
Hence,
this
study
call
critical
approach
future
land-sharing
policies.
Agriculture,
Journal Year:
2024,
Volume and Issue:
14(9), P. 1497 - 1497
Published: Sept. 2, 2024
The
Common
Agricultural
Policy
(CAP)
is
a
European
Union
(EU)
policy
aimed
at
supporting
farmers,
guaranteeing
food
security,
and
promoting
sustainable
rural
development,
which
has
undergone
numerous
reforms
to
adapt
the
needs
of
agricultural
sector
society
in
general.
main
objective
this
work
statistically
analyse
CAP
aid
southwest
Spain,
specifically
Extremadura,
region
characterised
by
areas
risk
depopulation
deep
areas,
during
last
two
periods
(2007–2013
2014–2020).
In
study,
means
principal
component
analysis
(PCA),
agricultural,
economic,
demographic
variables
were
interrelated,
together
with
geographic
information
systems
(GIS),
evaluate
their
impact
on
development
regional
sector.
This
methodology
will
help
identify
improvements
territorial
structures
can
therefore
serve
as
basis
for
application
other
territories.
Through
analysis,
we
identified
where
interrelation
showed
demographic,
social,
economic
structures,
municipalities
populations
over
10,000
inhabitants
Extremadura
being
ones
that
compose
substructure
A.
Therefore,
shows
how
disproportionately
favour
most
dynamic
territories
leave
less
developed
regions
disadvantage.
Ecological Entomology,
Journal Year:
2023,
Volume and Issue:
49(2), P. 180 - 190
Published: Oct. 31, 2023
Abstract
Established
butterfly
survey
methods
that
are
useful
for
monitoring
species
widely
distributed
and
numerous
may
be
less
accurate
more
rare
species.
We
therefore
need
new
approaches.
describe
a
plot‐based
method,
where
butterflies
or
larvae
nests
counted
within
1‐ha
grid
cells.
The
aim
was
to
compare
this
method
with
traditional
transect
counts
evaluate
both
in
relation
high‐quality
capture–mark–release
(CMR)
population
estimates
(reflecting
the
‘true’
population).
do
using
data
from
large
of
marsh
fritillary
Sweden.
Moreover,
we
followed
overall
trend
2017
2021
adult
larvae.
Results
showed
higher
detection
probability
compared
counts,
which
seem
explained
by
time
effort.
surveys
clear
significant
relationship
estimated
size
CMR,
while
did
not.
For
larvae,
relationships
size,
but
found
5.7
times
fluctuated
significantly
across
years.
In
years
low
densities,
largely
failed
detect
seems
reliable
detecting
estimating
its
thus,
tracking
trend.
propose
novel
integrated
into
biodiversity,
especially
when
focusing
on
habitat
specialists
normally
underrepresented
based
volunteer
counts.
Journal of Environmental Law & Policy,
Journal Year:
2024,
Volume and Issue:
04(01), P. 54 - 83
Published: June 8, 2024
Shipbreaking
and
ship
recycling
is
one
of
the
major
industries
Bangladesh.
It
a
significant
contributor
to
Bangladesh’s
economy
employment
as
well
sources
steel
supply
for
nation.
However,
this
comes
at
huge
cost
environment
human
health
current
governance
industry
unable
address
issue
properly.
This
paper
offers
comprehensive
analysis
legal
framework
governing
ship-breaking
ship-recycling
in
Bangladesh,
with
primary
focus
on
environmental
degradation.
critically
examines
both
national
international
instruments
aimed
regulating
industry.
Drawing
upon
extensive
research
literature
review,
evaluates
effectiveness
existing
mechanisms
addressing
concerns
associated
activities.
Special
attention
paid
compliance
enforcement
within
these
frameworks.
Through
comparative
relevant
statutes,
conventions,
case
law,
highlights
gaps
shortcomings
regulations
which
need
be
addressed
strengthen
protections
study
seeks
augment
dialogues
encouraging
sustainable
practices
Bangladesh
by
offering
nuanced
understanding
complex
interactions
between
Agriculture Ecosystems & Environment,
Journal Year:
2024,
Volume and Issue:
373, P. 109114 - 109114
Published: June 28, 2024
Agriculture
intensification
is
one
of
the
most
impacting
drivers
European
biodiversity
decline.
The
Natura
2000
(N2000)
network
constitutes
a
key
tool
for
conservation
species
and
natural
habitats
in
Europe.
Its
action
to
counteract
negative
impacts
agriculture
mainly
based
on
implementation
Agri-environment
schemes
(AES)
N2000
sites.
As
economical
resources
are
usually
limited,
spatial
targeting
essential
such
policy.
Here
we
evaluated
whether
AES
distribution
was
coordination
with
habitat
states,
agriculture-driven
pressures
French
network.
Using
Pressure-State-Response
framework,
tested
hypothesis
that
were
implemented
sites
mostly
exposed
pressures,
having
higher
representativeness
degradation
levels.
We
combined
different
sources
information
(i.e.,
standard
data
forms
policy,
collected
by
observatory
rural
development
national
geographical
information)
produce
pressure,
state
response
indicators.
declined
analysis
per
category
related
agricultural
activities
considered
vulnerability
each
pressure
category.
found
limited
between
AES,
variables:
only
37
%
fitted
models
significant.
Significant
relationships
negative.
Considering
all
indicators,
our
hypotheses
disproven
more
than
half
significant
relationships.
results
revealed
mismatch
ecological
needs
within
network,
as
devoted
less
pressure.
Our
raise
need
strategic
approach
Indeed,
level
human
should
be
automatically
a-priori
any
management
measures
effectively
focus
efforts
causes
current
crisis.
Landscape Ecology,
Journal Year:
2024,
Volume and Issue:
39(9)
Published: Aug. 16, 2024
Abstract
Context
Conservation
of
endangered
species
necessitates
an
in-depth
understanding
their
ecological
requirements.
Particularly
in
landscape
ecology,
the
behavioural
tendencies
threatened
butterfly
Gotland,
a
biodiversity-rich
island
Baltic
Sea,
become
crucial.
Objectives
The
primary
aim
this
study
was
to
elucidate
movement
patterns
three
species—
Euphydryas
aurinia
,
Parnassius
apollo
and
Phengaris
arion
—in
Gotland
identify
influence
specific
land
characteristics
on
these
patterns.
Methods
Our
study,
conducted
from
2017
2020
across
60
km
2
involved
detailed
capture-mark-recapture
(CMR)
efforts
29,584
captures
including
16,223
unique
butterflies.
We
investigate
departure
arrival
events
butterflies,
specifically
focusing
associations
between
movements
when
individuals
leave
or
enter
hectare
grid
different
previously
recorded
location
key
features:
open
vegetated
land,
ground
moisture,
forest
cover.
model
features
examine
interplay
patterns,
providing
insights
into
preferred
conservation
strategies.
Results
Among
4821
arrivals
5083
departures
documented,
exhibited
differential
responses
evaluated
habitat
features.
Both
E.
P.
displayed
positive
density-dependent
dispersal,
while
arion’s
were
not
significantly
associated
with
any
examined
Landscape
properties
like
moisture
index
statistically
influenced
likelihood
departure.
Conclusions
accentuates
relationship
cover
subject
species.
It
has
broader
implications
for
targeted
management
strategies
that
would
benefit
populations
Gotland.
