Orientation and long-distance migration routes: an attempt to evaluate compass cue limitations and required precision
Sandberg, Roland LU and Holmquist, Björn LU
(1998)
In Journal of Avian Biology
29(4).
p.626-636
- Abstract
- By computers imulationso f differentf lightr outesf or springm igratingK nots Calidris
canutusp, otentialo rientationa'ld angerz ones' werer evealedi n the equatora rea and
northo f the Arcticc ircle.A n evaluationo f the availabilityo f directionailn formation
duringm igratoryf lightsd emonstratedth e potentialh azardso f crossingt hese danger
zones. Investigationso f the directionalc onsequenceso f sun compass orientation
based upon an internalc lock in phase with local time at the departures ite showed
that such a mechanism would entail serious losses in distance and time. A simple
compensatingr uleb asedo n the rateo f changei n sun altitudew as foundt o workw ell
... (More) - By computers imulationso f differentf lightr outesf or springm igratingK nots Calidris
canutusp, otentialo rientationa'ld angerz ones' werer evealedi n the equatora rea and
northo f the Arcticc ircle.A n evaluationo f the availabilityo f directionailn formation
duringm igratoryf lightsd emonstratedth e potentialh azardso f crossingt hese danger
zones. Investigationso f the directionalc onsequenceso f sun compass orientation
based upon an internalc lock in phase with local time at the departures ite showed
that such a mechanism would entail serious losses in distance and time. A simple
compensatingr uleb asedo n the rateo f changei n sun altitudew as foundt o workw ell
both at polar latitudes and in the equator area. The magnetic compass will become
inoperativec lose to the magnetice quatora nd the poles, thus restrictingth e availability
of directional information. Orientation by stellar cues will become impossible
during spring and summer at arctic latitudes. Simulations of potential migratory
routesa lso enablede xaminationo f the requiredp recisiono f compasss ystemsa nd it
was indicatedt hat necessaryo rientationa ccuracyr equiresm ore than one directional
selectionp er long-distancef light to ensure survival.I t is concludedt hat computer
simulations of flight tracks, based on ringing recoveries, visual observations, radar
studies and satellite telemetry may be a powerful tool helping to identify problems
which require future experimental attention. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1144959
- author
- Sandberg, Roland
LU
and Holmquist, Björn
LU
- organization
- publishing date
- 1998
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Avian Biology
- volume
- 29
- issue
- 4
- pages
- 626 - 636
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:0032440275
- ISSN
- 0908-8857
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Animal Ecology (Closed 2011) (011012001), Department of Statistics (012014000)
- id
- b928ec4d-e375-4edf-bc1c-4863c60668f4 (old id 1144959)
- date added to LUP
- 2016-04-01 11:53:52
- date last changed
- 2022-01-26 19:53:49
@article{b928ec4d-e375-4edf-bc1c-4863c60668f4,
abstract = {{By computers imulationso f differentf lightr outesf or springm igratingK nots Calidris<br/><br>
canutusp, otentialo rientationa'ld angerz ones' werer evealedi n the equatora rea and<br/><br>
northo f the Arcticc ircle.A n evaluationo f the availabilityo f directionailn formation<br/><br>
duringm igratoryf lightsd emonstratedth e potentialh azardso f crossingt hese danger<br/><br>
zones. Investigationso f the directionalc onsequenceso f sun compass orientation<br/><br>
based upon an internalc lock in phase with local time at the departures ite showed<br/><br>
that such a mechanism would entail serious losses in distance and time. A simple<br/><br>
compensatingr uleb asedo n the rateo f changei n sun altitudew as foundt o workw ell<br/><br>
both at polar latitudes and in the equator area. The magnetic compass will become<br/><br>
inoperativec lose to the magnetice quatora nd the poles, thus restrictingth e availability<br/><br>
of directional information. Orientation by stellar cues will become impossible<br/><br>
during spring and summer at arctic latitudes. Simulations of potential migratory<br/><br>
routesa lso enablede xaminationo f the requiredp recisiono f compasss ystemsa nd it<br/><br>
was indicatedt hat necessaryo rientationa ccuracyr equiresm ore than one directional<br/><br>
selectionp er long-distancef light to ensure survival.I t is concludedt hat computer<br/><br>
simulations of flight tracks, based on ringing recoveries, visual observations, radar<br/><br>
studies and satellite telemetry may be a powerful tool helping to identify problems<br/><br>
which require future experimental attention.}},
author = {{Sandberg, Roland and Holmquist, Björn}},
issn = {{0908-8857}},
language = {{eng}},
number = {{4}},
pages = {{626--636}},
publisher = {{Wiley-Blackwell}},
series = {{Journal of Avian Biology}},
title = {{Orientation and long-distance migration routes: an attempt to evaluate compass cue limitations and required precision}},
volume = {{29}},
year = {{1998}},
}