Luminous intensity and dive depth profile data of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005
The foraging ability of visual hunters depends critically on light conditions. Emperor penguins Aptenodytes forsteri are reported to be visual hunters, but breed and forage at high latitudes and are thus exposed to extreme changes in light conditions in the course of the year. We examined how light...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.701333 2023-05-15T13:42:09+02:00 Luminous intensity and dive depth profile data of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005 Zimmer, Ilka Wilson, Rory P Beaulieu, Michaël Ancel, André Plötz, Joachim MEDIAN LATITUDE: -66.666875 * MEDIAN LONGITUDE: 140.003500 * SOUTH-BOUND LATITUDE: -66.673000 * WEST-BOUND LONGITUDE: 139.990000 * NORTH-BOUND LATITUDE: -66.657000 * EAST-BOUND LONGITUDE: 140.031000 * DATE/TIME START: 2005-10-31T22:23:00 * DATE/TIME END: 2005-11-22T09:09:50 2008-07-15 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.701333 https://doi.org/10.1594/PANGAEA.701333 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.701333 https://doi.org/10.1594/PANGAEA.701333 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Zimmer, Ilka; Wilson, Rory P; Beaulieu, Michaël; Ancel, André; Plötz, Joachim (2008): Seeing the light: depth and time restrictions in the foraging capacity of emperor penguins at Pointe Géologie, Antarctica. Aquatic Biology, 3(3), 217-226, https://doi.org/10.3354/ab00082 DDU2005 DDU2005_emp_a_f_18 DDU2005_emp_a_m_10 DDU2005_emp_a_x_05 DDU2005_emp_a_x_08 Dumont d´Urville Station Dumont d´Urville Trough Marine endotherm Marine Mammal Tracking MET MMT Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.701333 https://doi.org/10.3354/ab00082 2023-01-20T07:31:12Z The foraging ability of visual hunters depends critically on light conditions. Emperor penguins Aptenodytes forsteri are reported to be visual hunters, but breed and forage at high latitudes and are thus exposed to extreme changes in light conditions in the course of the year. We examined how light influenced the foraging ability of breeding emperor penguins using loggers in winter (n = 5) and spring (n = 4) 2005 (see doi:10.1594/PANGAEA.633713) at Pointe Géologie (66° 40' S, 140° 01' E), Antarctica, as well as by using models of light availability over the year and as a function of depth. The model showed that daylight was continuous between days of the year 350 and 363 and that the sun did not rise between days of the year 166 and 180. Logger-measured light intensity decreased with water depth, and depth-specific values were higher at greater sun elevation angles. Depth-time use (given by the maximum depth reached multiplied by the number of hours at which this depth could be achieved over 24 h) of spring-foraging penguins was 8394.5 m x h, which was more than twice that of winter-foraging birds at 3845.4 m x h, showing the severe constraints imposed by winter conditions. Average catch-per-unit effort was related to mean maximum diving depth and was highest around mid-day in winter and highest during dawn and dusk in spring. This reflects availability of prey to foraging emperor penguins. Dataset Antarc* Antarctica Aptenodytes forsteri E. Antarctica Emperor penguins PANGAEA - Data Publisher for Earth & Environmental Science Pointe-Géologie ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(139.990000,140.031000,-66.657000,-66.673000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
DDU2005 DDU2005_emp_a_f_18 DDU2005_emp_a_m_10 DDU2005_emp_a_x_05 DDU2005_emp_a_x_08 Dumont d´Urville Station Dumont d´Urville Trough Marine endotherm Marine Mammal Tracking MET MMT |
spellingShingle |
DDU2005 DDU2005_emp_a_f_18 DDU2005_emp_a_m_10 DDU2005_emp_a_x_05 DDU2005_emp_a_x_08 Dumont d´Urville Station Dumont d´Urville Trough Marine endotherm Marine Mammal Tracking MET MMT Zimmer, Ilka Wilson, Rory P Beaulieu, Michaël Ancel, André Plötz, Joachim Luminous intensity and dive depth profile data of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005 |
topic_facet |
DDU2005 DDU2005_emp_a_f_18 DDU2005_emp_a_m_10 DDU2005_emp_a_x_05 DDU2005_emp_a_x_08 Dumont d´Urville Station Dumont d´Urville Trough Marine endotherm Marine Mammal Tracking MET MMT |
description |
The foraging ability of visual hunters depends critically on light conditions. Emperor penguins Aptenodytes forsteri are reported to be visual hunters, but breed and forage at high latitudes and are thus exposed to extreme changes in light conditions in the course of the year. We examined how light influenced the foraging ability of breeding emperor penguins using loggers in winter (n = 5) and spring (n = 4) 2005 (see doi:10.1594/PANGAEA.633713) at Pointe Géologie (66° 40' S, 140° 01' E), Antarctica, as well as by using models of light availability over the year and as a function of depth. The model showed that daylight was continuous between days of the year 350 and 363 and that the sun did not rise between days of the year 166 and 180. Logger-measured light intensity decreased with water depth, and depth-specific values were higher at greater sun elevation angles. Depth-time use (given by the maximum depth reached multiplied by the number of hours at which this depth could be achieved over 24 h) of spring-foraging penguins was 8394.5 m x h, which was more than twice that of winter-foraging birds at 3845.4 m x h, showing the severe constraints imposed by winter conditions. Average catch-per-unit effort was related to mean maximum diving depth and was highest around mid-day in winter and highest during dawn and dusk in spring. This reflects availability of prey to foraging emperor penguins. |
format |
Dataset |
author |
Zimmer, Ilka Wilson, Rory P Beaulieu, Michaël Ancel, André Plötz, Joachim |
author_facet |
Zimmer, Ilka Wilson, Rory P Beaulieu, Michaël Ancel, André Plötz, Joachim |
author_sort |
Zimmer, Ilka |
title |
Luminous intensity and dive depth profile data of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005 |
title_short |
Luminous intensity and dive depth profile data of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005 |
title_full |
Luminous intensity and dive depth profile data of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005 |
title_fullStr |
Luminous intensity and dive depth profile data of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005 |
title_full_unstemmed |
Luminous intensity and dive depth profile data of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005 |
title_sort |
luminous intensity and dive depth profile data of emperor penguins from pointe géologie, adélie land, antarctica, from expedition ddu 2005 |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.701333 https://doi.org/10.1594/PANGAEA.701333 |
op_coverage |
MEDIAN LATITUDE: -66.666875 * MEDIAN LONGITUDE: 140.003500 * SOUTH-BOUND LATITUDE: -66.673000 * WEST-BOUND LONGITUDE: 139.990000 * NORTH-BOUND LATITUDE: -66.657000 * EAST-BOUND LONGITUDE: 140.031000 * DATE/TIME START: 2005-10-31T22:23:00 * DATE/TIME END: 2005-11-22T09:09:50 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(139.990000,140.031000,-66.657000,-66.673000) |
geographic |
Pointe-Géologie |
geographic_facet |
Pointe-Géologie |
genre |
Antarc* Antarctica Aptenodytes forsteri E. Antarctica Emperor penguins |
genre_facet |
Antarc* Antarctica Aptenodytes forsteri E. Antarctica Emperor penguins |
op_source |
Supplement to: Zimmer, Ilka; Wilson, Rory P; Beaulieu, Michaël; Ancel, André; Plötz, Joachim (2008): Seeing the light: depth and time restrictions in the foraging capacity of emperor penguins at Pointe Géologie, Antarctica. Aquatic Biology, 3(3), 217-226, https://doi.org/10.3354/ab00082 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.701333 https://doi.org/10.1594/PANGAEA.701333 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.701333 https://doi.org/10.3354/ab00082 |
_version_ |
1766163370630709248 |