Buoyed up and slowed down: Speed limits for diving birds in shallow water

Autores
Shepard, Emily L. C.; Wilson, Rory P.; Gómez Laich, Agustina Marta; Quintana, Flavio Roberto
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In air-breathing animals, the time and energy costs of each dive are primarily determined by depth-related upthrust, swim speed and temperature. While studies have previously investigated how animals should optimise their behaviour in relation to either upthrust or speed they have rarely been examined in tandem. We took overall dynamic body acceleration (ODBA) as a proxy for the mechanical power used during the bottom phases of dives of imperial shags Phalacrocorax atriceps, as these birds forage benthically, in order to define: (1) the minimum power required for swimming at depth and (2) how the use of power above this threshold varied with dive depth.   Results showed that ODBA declined with increasing dive depth in a manner correlated with the reduction in upthrust, and that the use of power above that required for prey searching increased with increasing dive depth. This may constitute a response to depth-related patterns in prey  availability. We present a model to investigate an alternative hypothesis that the ability of birds to produce burst speeds is also inversely related to the power required to counter buoyancy. Under the model assumptions, achievable burst speeds vary up to 0.7 m s–1 across dive depths from 5 to 60 m. Ultimately, prey preferences cannot be separated from prey fields, but we suggest that this model may provide insight into the ability of air-breathing divers to pursue various prey types according to dive depth.
Fil: Shepard, Emily L. C.. Swansea University; Reino Unido
Fil: Wilson, Rory P.. Swansea University; Reino Unido
Fil: Gómez Laich, Agustina Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados Unidos
Materia
ACCELEROMETRY
DIVING BIRD
ODBA
OVERALL DYNAMIC BODY ACCELERATION
SWIM SPEED
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/63163

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spelling Buoyed up and slowed down: Speed limits for diving birds in shallow waterShepard, Emily L. C.Wilson, Rory P.Gómez Laich, Agustina MartaQuintana, Flavio RobertoACCELEROMETRYDIVING BIRDODBAOVERALL DYNAMIC BODY ACCELERATIONSWIM SPEEDhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In air-breathing animals, the time and energy costs of each dive are primarily determined by depth-related upthrust, swim speed and temperature. While studies have previously investigated how animals should optimise their behaviour in relation to either upthrust or speed they have rarely been examined in tandem. We took overall dynamic body acceleration (ODBA) as a proxy for the mechanical power used during the bottom phases of dives of imperial shags Phalacrocorax atriceps, as these birds forage benthically, in order to define: (1) the minimum power required for swimming at depth and (2) how the use of power above this threshold varied with dive depth.   Results showed that ODBA declined with increasing dive depth in a manner correlated with the reduction in upthrust, and that the use of power above that required for prey searching increased with increasing dive depth. This may constitute a response to depth-related patterns in prey  availability. We present a model to investigate an alternative hypothesis that the ability of birds to produce burst speeds is also inversely related to the power required to counter buoyancy. Under the model assumptions, achievable burst speeds vary up to 0.7 m s–1 across dive depths from 5 to 60 m. Ultimately, prey preferences cannot be separated from prey fields, but we suggest that this model may provide insight into the ability of air-breathing divers to pursue various prey types according to dive depth.Fil: Shepard, Emily L. C.. Swansea University; Reino UnidoFil: Wilson, Rory P.. Swansea University; Reino UnidoFil: Gómez Laich, Agustina Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados UnidosInter-Research2010-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63163Shepard, Emily L. C.; Wilson, Rory P.; Gómez Laich, Agustina Marta; Quintana, Flavio Roberto; Buoyed up and slowed down: Speed limits for diving birds in shallow water; Inter-Research; Aquatic Biology; 8; 3; 3-2010; 259-2671864-77821864-7790CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3354/ab00232info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:56Zoai:ri.conicet.gov.ar:11336/63163instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:26:56.757CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Buoyed up and slowed down: Speed limits for diving birds in shallow water
title Buoyed up and slowed down: Speed limits for diving birds in shallow water
spellingShingle Buoyed up and slowed down: Speed limits for diving birds in shallow water
Shepard, Emily L. C.
ACCELEROMETRY
DIVING BIRD
ODBA
OVERALL DYNAMIC BODY ACCELERATION
SWIM SPEED
title_short Buoyed up and slowed down: Speed limits for diving birds in shallow water
title_full Buoyed up and slowed down: Speed limits for diving birds in shallow water
title_fullStr Buoyed up and slowed down: Speed limits for diving birds in shallow water
title_full_unstemmed Buoyed up and slowed down: Speed limits for diving birds in shallow water
title_sort Buoyed up and slowed down: Speed limits for diving birds in shallow water
dc.creator.none.fl_str_mv Shepard, Emily L. C.
Wilson, Rory P.
Gómez Laich, Agustina Marta
Quintana, Flavio Roberto
author Shepard, Emily L. C.
author_facet Shepard, Emily L. C.
Wilson, Rory P.
Gómez Laich, Agustina Marta
Quintana, Flavio Roberto
author_role author
author2 Wilson, Rory P.
Gómez Laich, Agustina Marta
Quintana, Flavio Roberto
author2_role author
author
author
dc.subject.none.fl_str_mv ACCELEROMETRY
DIVING BIRD
ODBA
OVERALL DYNAMIC BODY ACCELERATION
SWIM SPEED
topic ACCELEROMETRY
DIVING BIRD
ODBA
OVERALL DYNAMIC BODY ACCELERATION
SWIM SPEED
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In air-breathing animals, the time and energy costs of each dive are primarily determined by depth-related upthrust, swim speed and temperature. While studies have previously investigated how animals should optimise their behaviour in relation to either upthrust or speed they have rarely been examined in tandem. We took overall dynamic body acceleration (ODBA) as a proxy for the mechanical power used during the bottom phases of dives of imperial shags Phalacrocorax atriceps, as these birds forage benthically, in order to define: (1) the minimum power required for swimming at depth and (2) how the use of power above this threshold varied with dive depth.   Results showed that ODBA declined with increasing dive depth in a manner correlated with the reduction in upthrust, and that the use of power above that required for prey searching increased with increasing dive depth. This may constitute a response to depth-related patterns in prey  availability. We present a model to investigate an alternative hypothesis that the ability of birds to produce burst speeds is also inversely related to the power required to counter buoyancy. Under the model assumptions, achievable burst speeds vary up to 0.7 m s–1 across dive depths from 5 to 60 m. Ultimately, prey preferences cannot be separated from prey fields, but we suggest that this model may provide insight into the ability of air-breathing divers to pursue various prey types according to dive depth.
Fil: Shepard, Emily L. C.. Swansea University; Reino Unido
Fil: Wilson, Rory P.. Swansea University; Reino Unido
Fil: Gómez Laich, Agustina Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados Unidos
description In air-breathing animals, the time and energy costs of each dive are primarily determined by depth-related upthrust, swim speed and temperature. While studies have previously investigated how animals should optimise their behaviour in relation to either upthrust or speed they have rarely been examined in tandem. We took overall dynamic body acceleration (ODBA) as a proxy for the mechanical power used during the bottom phases of dives of imperial shags Phalacrocorax atriceps, as these birds forage benthically, in order to define: (1) the minimum power required for swimming at depth and (2) how the use of power above this threshold varied with dive depth.   Results showed that ODBA declined with increasing dive depth in a manner correlated with the reduction in upthrust, and that the use of power above that required for prey searching increased with increasing dive depth. This may constitute a response to depth-related patterns in prey  availability. We present a model to investigate an alternative hypothesis that the ability of birds to produce burst speeds is also inversely related to the power required to counter buoyancy. Under the model assumptions, achievable burst speeds vary up to 0.7 m s–1 across dive depths from 5 to 60 m. Ultimately, prey preferences cannot be separated from prey fields, but we suggest that this model may provide insight into the ability of air-breathing divers to pursue various prey types according to dive depth.
publishDate 2010
dc.date.none.fl_str_mv 2010-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/63163
Shepard, Emily L. C.; Wilson, Rory P.; Gómez Laich, Agustina Marta; Quintana, Flavio Roberto; Buoyed up and slowed down: Speed limits for diving birds in shallow water; Inter-Research; Aquatic Biology; 8; 3; 3-2010; 259-267
1864-7782
1864-7790
CONICET Digital
CONICET
url http://hdl.handle.net/11336/63163
identifier_str_mv Shepard, Emily L. C.; Wilson, Rory P.; Gómez Laich, Agustina Marta; Quintana, Flavio Roberto; Buoyed up and slowed down: Speed limits for diving birds in shallow water; Inter-Research; Aquatic Biology; 8; 3; 3-2010; 259-267
1864-7782
1864-7790
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3354/ab00232
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Inter-Research
publisher.none.fl_str_mv Inter-Research
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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