Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands
The habitat associations between the caridean shrimp Nauticaris marionis and sessile epibenthic assemblages and substratum types of the Sub-Antarctic Prince Edward Islands were investigated. Twenty five stations, varying in substratum type, depth and location on the shelf and slope around the island...
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Marine Research (MA-RE) Institute
2016
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ftunivcapetownir:oai:open.uct.ac.za:11427/20471 2024-09-15T17:48:30+00:00 Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands Haley, Craig Atkinson, Lara Jane Von der Meden, Charles Reed, Cecile C 2016 application/pdf http://hdl.handle.net/11427/20471 eng eng Marine Research (MA-RE) Institute Faculty of Science University of Cape Town http://hdl.handle.net/11427/20471 Zoology Marine Biology Master Thesis Masters MSc 2016 ftunivcapetownir 2024-06-25T03:39:22Z The habitat associations between the caridean shrimp Nauticaris marionis and sessile epibenthic assemblages and substratum types of the Sub-Antarctic Prince Edward Islands were investigated. Twenty five stations, varying in substratum type, depth and location on the shelf and slope around the islands were sampled photographically with a towed benthic camera sled. At each station the substratum type was classified, sessile epibenthic cover was quantified through the use of digital quadrats and shrimp density was estimated. Results add to the broadly described distribution patterns of N. marionis by identifying specifically the habitat characteristics they generally utilize. The distribution of N. marionis was found to be influenced by a combination of substratum and sessile epibenthic assemblages, but not substratum type alone. Shrimp inhabited stations with >50 % biogenic cover on mud and gravel substrata, but were not found at stations with rocky-sand or rocky-mud substrata. Their distribution appears to also be influenced by depth, as shrimp were only found within a depth range of 50 - 160 m in this study. A strong correlation was found between N. marionis density and depth. Shrimp were found both inshore around the islands, and on the relatively shallow saddle between the islands. In comparison with previous studies, N. marionis was found at similar, if not higher, densities in this study, although they occupied a narrower depth range. Master Thesis Antarc* Antarctic Prince Edward Islands University of Cape Town: OpenUCT |
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Open Polar |
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University of Cape Town: OpenUCT |
op_collection_id |
ftunivcapetownir |
language |
English |
topic |
Zoology Marine Biology |
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Zoology Marine Biology Haley, Craig Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands |
topic_facet |
Zoology Marine Biology |
description |
The habitat associations between the caridean shrimp Nauticaris marionis and sessile epibenthic assemblages and substratum types of the Sub-Antarctic Prince Edward Islands were investigated. Twenty five stations, varying in substratum type, depth and location on the shelf and slope around the islands were sampled photographically with a towed benthic camera sled. At each station the substratum type was classified, sessile epibenthic cover was quantified through the use of digital quadrats and shrimp density was estimated. Results add to the broadly described distribution patterns of N. marionis by identifying specifically the habitat characteristics they generally utilize. The distribution of N. marionis was found to be influenced by a combination of substratum and sessile epibenthic assemblages, but not substratum type alone. Shrimp inhabited stations with >50 % biogenic cover on mud and gravel substrata, but were not found at stations with rocky-sand or rocky-mud substrata. Their distribution appears to also be influenced by depth, as shrimp were only found within a depth range of 50 - 160 m in this study. A strong correlation was found between N. marionis density and depth. Shrimp were found both inshore around the islands, and on the relatively shallow saddle between the islands. In comparison with previous studies, N. marionis was found at similar, if not higher, densities in this study, although they occupied a narrower depth range. |
author2 |
Atkinson, Lara Jane Von der Meden, Charles Reed, Cecile C |
format |
Master Thesis |
author |
Haley, Craig |
author_facet |
Haley, Craig |
author_sort |
Haley, Craig |
title |
Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands |
title_short |
Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands |
title_full |
Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands |
title_fullStr |
Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands |
title_full_unstemmed |
Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands |
title_sort |
habitat association and distribution of nauticaris marionis at the sub-antarctic prince edward islands |
publisher |
Marine Research (MA-RE) Institute |
publishDate |
2016 |
url |
http://hdl.handle.net/11427/20471 |
genre |
Antarc* Antarctic Prince Edward Islands |
genre_facet |
Antarc* Antarctic Prince Edward Islands |
op_relation |
http://hdl.handle.net/11427/20471 |
_version_ |
1810289777119854592 |