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Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast
Dissertation (MSc (Zoology))--University of Pretoria, 2006.
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| Format: | Thesis |
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University of Pretoria
2013
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| _version_ | 1867613589894856704 |
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| access_status_str | Open Access |
| author2 | Best, Peter B. |
| author_browse | Best, Peter B. |
| author_facet | Best, Peter B. |
| collection | Thesis |
| dc_rights_str_mv | © 2001, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Zoology))--University of Pretoria, 2006. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/29646 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:38:33.603Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/29646 Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast Best, Peter B. upetd@up.ac.za Elwen, Simon Harvey Southern white whale environmental geography Southern right whale zoogeography UCTD Dissertation (MSc (Zoology))--University of Pretoria, 2006. Distributional data from 32 years of aerial surveys of southern right whales (Eubalaena australis) along the south coast of South Africa were investigated using GIS, over a variety of spatial and temporal scales to test whether their discontinuous yet predictable distribution is related to environmental characteristics. Most whales were found in areas that provided reasonable protection from open ocean swell and seasonal winds as well as having sedimentary floors with gentle slopes, despite these characteristics being less common. Correlation type analyses with whale density only showed significance at the broadest scale. Cow-calf pairs were found significantly closer to shore and in shallower water than unaccompanied whales; they also segregated longshore in nursery areas. No relationship between reproductive success and distribution was found except a higher than expected incidence of neonatal strandings in areas dominated by unaccompanied whales. Habitat choice at this time of year was concluded to be related both to energy conservation for calves and lactating females and protection of neonates. Zoology and Entomology unrestricted 2013-09-07T16:10:21Z 2005-11-22 2013-09-07T16:10:21Z 2002-04-19 2006-11-22 2005-11-21 Dissertation Elwen, SH 2001, Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/29646 > H206/ag http://hdl.handle.net/2263/29646 http://upetd.up.ac.za/thesis/available/etd-11212005-142925/ © 2001, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Southern white whale environmental geography Southern right whale zoogeography UCTD Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast |
| title | Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast |
| title_full | Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast |
| title_fullStr | Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast |
| title_full_unstemmed | Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast |
| title_short | Environmental factors influencing the distribution of southern right whales (Eubalaena australis) on the South African coast |
| title_sort | environmental factors influencing the distribution of southern right whales eubalaena australis on the south african coast |
| topic | Southern white whale environmental geography Southern right whale zoogeography UCTD |
| url | http://hdl.handle.net/2263/29646 http://upetd.up.ac.za/thesis/available/etd-11212005-142925/ |