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...
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1997
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Online Access: | https://escholarship.org/uc/item/4v7325h1 |
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ftcdlib:oai:escholarship.org/ark:/13030/qt4v7325h1 2023-05-15T13:39:57+02:00 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 41 - 51 1997-07-31 application/pdf https://escholarship.org/uc/item/4v7325h1 unknown eScholarship, University of California qt4v7325h1 https://escholarship.org/uc/item/4v7325h1 CC-BY CC-BY Marine Ecology Progress Series, vol 154 seabirds zooplankton sampling Antarctic marine inshore predation Marine Biology & Hydrobiology Ecology Zoology Oceanography article 1997 ftcdlib 2020-03-20T23:55:48Z 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 Antarctic Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Stewart Strait ENVELOPE(-38.105,-38.105,-54.007,-54.007) |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
seabirds zooplankton sampling Antarctic marine inshore predation Marine Biology & Hydrobiology Ecology Zoology Oceanography |
spellingShingle |
seabirds zooplankton sampling Antarctic marine inshore predation Marine Biology & Hydrobiology Ecology Zoology Oceanography 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 Marine Biology & Hydrobiology Ecology Zoology Oceanography |
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 |
op_coverage |
41 - 51 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) ENVELOPE(-38.105,-38.105,-54.007,-54.007) |
geographic |
Antarctic Bird Island Stewart Strait |
geographic_facet |
Antarctic Bird Island Stewart Strait |
genre |
Antarc* Antarctic Bird Island |
genre_facet |
Antarc* Antarctic Bird Island |
op_source |
Marine Ecology Progress Series, vol 154 |
op_relation |
qt4v7325h1 https://escholarship.org/uc/item/4v7325h1 |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766126387831242752 |