Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands

 

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dc.contributor.advisor Atkinson, Lara Jane en_ZA
dc.contributor.advisor Von der Meden, Charles en_ZA
dc.contributor.advisor Reed, Cecile C en_ZA
dc.contributor.author Haley, Craig en_ZA
dc.date.accessioned 2016-07-20T06:50:27Z
dc.date.available 2016-07-20T06:50:27Z
dc.date.issued 2016 en_ZA
dc.identifier.citation Haley, C. 2016. Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/20471
dc.description.abstract 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. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Zoology en_ZA
dc.subject.other Marine Biology en_ZA
dc.title Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands en_ZA
dc.type Thesis / Dissertation en_ZA
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Marine Research (MA-RE) Institute en_ZA
dc.type.qualificationlevel Masters en_ZA
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image


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