Evaluation of tag attachment techniques for plunge‐diving terns
Ibis,
Год журнала:
2024,
Номер
166(3), С. 1003 - 1022
Опубликована: Фев. 4, 2024
A
wide
variety
of
attachment
techniques
have
been
used
to
track
birds
with
electronic
tags,
glue,
tape,
leg
rings,
neck
collars
and
harnesses
being
the
most
common
methods.
In
general,
choice
method
should
strive
minimize
tagging
effects,
but
ensure
that
sufficient
data
are
collected
address
research
question
at
hand.
The
aim
our
study
was
develop
evaluate
tag
methods
Sandwich
Terns
Thalasseus
sandvicensis
during
last
part
incubation
chick‐rearing
period
one
breeding
season.
Tag
attachments
had
stay
on
for
duration
(5–6
weeks)
be
non‐restraining
flexible,
strong
enough
withstand
forces
submersion
associated
their
plunge‐diving
foraging
technique.
We
first
experimentally
tested
durability
flexible
material
under
various
environmental
conditions
developing
a
self‐releasing
harness.
Then,
in
field
studies,
we
compared
three
different
terns
seasons,
attaching
tags
dorsal
feathers
using
(1)
(2)
glue
or
(3)
newly
developed
harness
made
specifically
short‐term
deployments
constructed
from
degradable
material.
Assessment
performance
based
retention
time
loggers
annual
survival
rates
tagged
individuals
comparison
non‐tagged
individuals.
use
tape
led
premature
loss
(median
minimum
(range)
3
(1–4)
days
15
(5–26)
days,
respectively),
whereas
median
42
(18–91)
which
is
entire
period.
apparent
did
not
differ
observed
control
birds.
contrast,
fitted
might
experienced
lower
rate
than
Entanglement
incidentally
cases,
may
contributed
this
group.
risk
entanglement
can
potentially
mitigated
leg‐loop
instead
full‐body
Our
results
highlight
necessity
careful
consideration
when
selecting
appropriate
Specifically,
there
need
whether
questions
desired
tracking
justify
higher
impact
it
entails,
glue‐mount
sufficient.
More
broadly,
sharing
expertise
across
studies
essential
successful
while
minimizing
animals.
Язык: Английский
Avoidance and attraction responses of kittiwakes to three offshore wind farms in the North Sea
Marine Biology,
Год журнала:
2024,
Номер
171(11)
Опубликована: Окт. 21, 2024
Abstract
Seabird
collision
risk
is
a
key
concern
in
relation
to
the
environmental
impacts
associated
with
offshore
wind
farms
(OWFs).
Understanding
how
species
respond
both
farm
itself,
and
individual
turbines
within
farm,
enabling
better
quantification
management
of
risk.
Collision
particular
for
black-legged
kittiwake,
Rissa
tridactyla
,
where
modelling
predicts
unsustainable
population
level
impacts.
In
this
study
20
adult
breeding
kittiwakes,
were
tracked
GPS
from
Whinnyfold,
Scotland
(57°23′07″N,
001°52′11″W)
during
season
2021.
An
Avoidance-Attraction
Index
(AAI)
was
estimated
at
several
bands
macro-
meso-scales
(0–4
km
outer
boundary
0–400
m
turbines,
respectively),
Avoidance
Rate
(AR;
used
impact
assessments)
macro-scale
estimate
avoidance
behaviour
three
operational
OWFs
their
foraging
range.
One
its
buffer
zone
boundary)
visited
more
frequently
by
majority
individuals
(19/20
birds),
despite
being
twice
as
far
closest
OWF
(17.3
31.9
whilst
10
or
less
remaining
two
OWFs.
At
most
frequented
we
found
attraction
band
(0–1
km)
trending
towards
furthest
(3–4
km).
meso-scale
areas
below
rotor
height
range
(RHR,
a.k.a.
swept
area/zone)
up
120
which
decreased
60
when
RHR.
Our
results
indicate
that
kittiwakes
may
be
slightly
attracted
area
around
aggregate
here
due
displacement
but
avoid
turbines.
Increased
productivity
potentially
drawing
birds
into
general
area,
aversion
responsible
observations.
Язык: Английский