Small-scale interactions between prions Pachyptila spp. and their zooplankton prey at an inshore site near Bird Island, South Georgia
We investigated the relationship between surface-foraging prions Pachyptila spp. and their zooplankton prey by comparing counts of foraging birds with near-surface concentrations of zooplankton from net samples. Zooplankton abundance was assessed by employing a new design of sampler that combined a...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
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eScholarship, University of California
1997
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Online Access: | https://escholarship.org/uc/item/4v7325h1 https://escholarship.org/content/qt4v7325h1/qt4v7325h1.pdf https://doi.org/10.3354/meps154041 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt4v7325h1 2024-09-15T17:41:14+00:00 Small-scale interactions between prions Pachyptila spp. and their zooplankton prey at an inshore site near Bird Island, South Georgia Goss, C Bone, DG Peck, JM Everson, I Hunt, GL Murray, AWA 1997-01-01 application/pdf https://escholarship.org/uc/item/4v7325h1 https://escholarship.org/content/qt4v7325h1/qt4v7325h1.pdf https://doi.org/10.3354/meps154041 unknown eScholarship, University of California qt4v7325h1 https://escholarship.org/uc/item/4v7325h1 https://escholarship.org/content/qt4v7325h1/qt4v7325h1.pdf doi:10.3354/meps154041 CC-BY seabirds zooplankton sampling Antarctic marine inshore predation Oceanography Ecology Zoology Marine Biology & Hydrobiology article 1997 ftcdlib https://doi.org/10.3354/meps154041 2024-06-28T06:28:19Z We investigated the relationship between surface-foraging prions Pachyptila spp. and their zooplankton prey by comparing counts of foraging birds with near-surface concentrations of zooplankton from net samples. Zooplankton abundance was assessed by employing a new design of sampler that combined a frame net with a pump at the cod-end and which was deployed at the sea surface. Six transects using the sampler with concurrent bird observations were made over a short stretch of Stewart Strait near Bird Island, South Georgia. Concentrations of a variety of zooplankton species occurred patchily along each transect. Peak numbers of prions were recorded consistently towards the southern end of each transect. These peaks coincided with peaks in zooplankton numbers, but with different prey species predominant on different occasions. Comparison of the distribution of foraging and sitting birds with the presence or absence of zooplankton peaks, after pooling zooplankton species into 2 broad classes, showed that birds were consistently observed over copepod maxima, but were not found to be associated with aggregations of larger zooplankton more often than expected by chance. Article in Journal/Newspaper Antarc* Antarctic Bird Island University of California: eScholarship Marine Ecology Progress Series 154 41 51 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
seabirds zooplankton sampling Antarctic marine inshore predation Oceanography Ecology Zoology Marine Biology & Hydrobiology |
spellingShingle |
seabirds zooplankton sampling Antarctic marine inshore predation Oceanography Ecology Zoology Marine Biology & Hydrobiology Goss, C Bone, DG Peck, JM Everson, I Hunt, GL Murray, AWA Small-scale interactions between prions Pachyptila spp. and their zooplankton prey at an inshore site near Bird Island, South Georgia |
topic_facet |
seabirds zooplankton sampling Antarctic marine inshore predation Oceanography Ecology Zoology Marine Biology & Hydrobiology |
description |
We investigated the relationship between surface-foraging prions Pachyptila spp. and their zooplankton prey by comparing counts of foraging birds with near-surface concentrations of zooplankton from net samples. Zooplankton abundance was assessed by employing a new design of sampler that combined a frame net with a pump at the cod-end and which was deployed at the sea surface. Six transects using the sampler with concurrent bird observations were made over a short stretch of Stewart Strait near Bird Island, South Georgia. Concentrations of a variety of zooplankton species occurred patchily along each transect. Peak numbers of prions were recorded consistently towards the southern end of each transect. These peaks coincided with peaks in zooplankton numbers, but with different prey species predominant on different occasions. Comparison of the distribution of foraging and sitting birds with the presence or absence of zooplankton peaks, after pooling zooplankton species into 2 broad classes, showed that birds were consistently observed over copepod maxima, but were not found to be associated with aggregations of larger zooplankton more often than expected by chance. |
format |
Article in Journal/Newspaper |
author |
Goss, C Bone, DG Peck, JM Everson, I Hunt, GL Murray, AWA |
author_facet |
Goss, C Bone, DG Peck, JM Everson, I Hunt, GL Murray, AWA |
author_sort |
Goss, C |
title |
Small-scale interactions between prions Pachyptila spp. and their zooplankton prey at an inshore site near Bird Island, South Georgia |
title_short |
Small-scale interactions between prions Pachyptila spp. and their zooplankton prey at an inshore site near Bird Island, South Georgia |
title_full |
Small-scale interactions between prions Pachyptila spp. and their zooplankton prey at an inshore site near Bird Island, South Georgia |
title_fullStr |
Small-scale interactions between prions Pachyptila spp. and their zooplankton prey at an inshore site near Bird Island, South Georgia |
title_full_unstemmed |
Small-scale interactions between prions Pachyptila spp. and their zooplankton prey at an inshore site near Bird Island, South Georgia |
title_sort |
small-scale interactions between prions pachyptila spp. and their zooplankton prey at an inshore site near bird island, south georgia |
publisher |
eScholarship, University of California |
publishDate |
1997 |
url |
https://escholarship.org/uc/item/4v7325h1 https://escholarship.org/content/qt4v7325h1/qt4v7325h1.pdf https://doi.org/10.3354/meps154041 |
genre |
Antarc* Antarctic Bird Island |
genre_facet |
Antarc* Antarctic Bird Island |
op_relation |
qt4v7325h1 https://escholarship.org/uc/item/4v7325h1 https://escholarship.org/content/qt4v7325h1/qt4v7325h1.pdf doi:10.3354/meps154041 |
op_rights |
CC-BY |
op_doi |
https://doi.org/10.3354/meps154041 |
container_title |
Marine Ecology Progress Series |
container_volume |
154 |
container_start_page |
41 |
op_container_end_page |
51 |
_version_ |
1810487383709188096 |