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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/63163
Ver los metadatos del registro completo
id |
CONICETDig_614bd02b72ff4a75d802ffa2d527c39b |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/63163 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
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 |
_version_ |
1844614270878220288 |
score |
13.070432 |