2005. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data. CCAMLR Sci
Seasonal variation in the diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) associated with the daylight phase over the diurnal cycle (i.e. brightness categories) was examined for the Scotia Sea (South Shetland Islands (SS), South Orkney Islands (SO) and South Georgia...
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.467.6503 http://www.ccamlr.org/en/system/files/science_journal_papers/09taki-etal.pdf |
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.467.6503 2023-05-15T13:31:21+02:00 2005. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data. CCAMLR Sci K. Taki T. Hayashi M. Naganobu The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.467.6503 http://www.ccamlr.org/en/system/files/science_journal_papers/09taki-etal.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.467.6503 http://www.ccamlr.org/en/system/files/science_journal_papers/09taki-etal.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.ccamlr.org/en/system/files/science_journal_papers/09taki-etal.pdf text ftciteseerx 2016-01-08T07:01:34Z Seasonal variation in the diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) associated with the daylight phase over the diurnal cycle (i.e. brightness categories) was examined for the Scotia Sea (South Shetland Islands (SS), South Orkney Islands (SO) and South Georgia (SG) areas) using Japanese fi shery data. Average trawling depth usually showed a marked diurnal change during summer and winter in SS and SO. Daily average trawling depth tended to be shallower during austral summer and early autumn, deepened gradually from autumn and reached maximum depth in winter in the Scotia Sea, shifting to shallower depths again in early spring. The average catch-per-unit-effort (CPUE) was highest during the day and lowest at night in autumn and winter in each area, but lower during the day in summer in SS and SO. It is suggested that the seasonal and diurnal changes in vertical migration and aggregation of krill are closely related to its feeding and spawning ecology and avoidance of visual predators. Résumé La variation saisonnière de la migration verticale diurne et de la concentration du krill Text Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea South Orkney Islands South Shetland Islands Unknown Antarctic Austral Scotia Sea South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) South Shetland Islands |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Seasonal variation in the diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) associated with the daylight phase over the diurnal cycle (i.e. brightness categories) was examined for the Scotia Sea (South Shetland Islands (SS), South Orkney Islands (SO) and South Georgia (SG) areas) using Japanese fi shery data. Average trawling depth usually showed a marked diurnal change during summer and winter in SS and SO. Daily average trawling depth tended to be shallower during austral summer and early autumn, deepened gradually from autumn and reached maximum depth in winter in the Scotia Sea, shifting to shallower depths again in early spring. The average catch-per-unit-effort (CPUE) was highest during the day and lowest at night in autumn and winter in each area, but lower during the day in summer in SS and SO. It is suggested that the seasonal and diurnal changes in vertical migration and aggregation of krill are closely related to its feeding and spawning ecology and avoidance of visual predators. Résumé La variation saisonnière de la migration verticale diurne et de la concentration du krill |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
K. Taki T. Hayashi M. Naganobu |
spellingShingle |
K. Taki T. Hayashi M. Naganobu 2005. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data. CCAMLR Sci |
author_facet |
K. Taki T. Hayashi M. Naganobu |
author_sort |
K. Taki |
title |
2005. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data. CCAMLR Sci |
title_short |
2005. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data. CCAMLR Sci |
title_full |
2005. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data. CCAMLR Sci |
title_fullStr |
2005. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data. CCAMLR Sci |
title_full_unstemmed |
2005. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data. CCAMLR Sci |
title_sort |
2005. characteristics of seasonal variation in diurnal vertical migration and aggregation of antarctic krill (euphausia superba) in the scotia sea, using japanese fishery data. ccamlr sci |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.467.6503 http://www.ccamlr.org/en/system/files/science_journal_papers/09taki-etal.pdf |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) |
geographic |
Antarctic Austral Scotia Sea South Orkney Islands South Shetland Islands |
geographic_facet |
Antarctic Austral Scotia Sea South Orkney Islands South Shetland Islands |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea South Orkney Islands South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea South Orkney Islands South Shetland Islands |
op_source |
http://www.ccamlr.org/en/system/files/science_journal_papers/09taki-etal.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.467.6503 http://www.ccamlr.org/en/system/files/science_journal_papers/09taki-etal.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766017683091881984 |