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Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa
Thesis (PhD)--University of Pretoria, 2018.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2018
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| _version_ | 1867613662882037760 |
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| access_status_str | Open Access |
| author2 | Roux, Jolanda |
| author_browse | Roux, Jolanda |
| author_facet | Roux, Jolanda |
| collection | Thesis |
| dc_rights_str_mv | © 2018 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 | Thesis (PhD)--University of Pretoria, 2018. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/65951 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:43.129Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| 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:2263/65951 Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa Roux, Jolanda u25019652@tuks.co.za Six, Diana L. Wingfield, Michael J. Van der Linde, Johannes Alwyn UCTD Thesis (PhD)--University of Pretoria, 2018. Globally, over the last 30 years, there has been an increase in the number of reports of tree mortality related to anthropogenically driven climate change. Changes in climate not only directly affect plant and tree growth but also influence insects and microbes (pests and pathogens) that interact with plants. Increased temperatures have, for example, led to an explosion in mountain pine beetle (Dendroctonus ponderosae) populations resulting in the death of more than 10 million hectares of Pinus contorta in Canada and the United States of America. This review considers the known and predicted impact of anthropogenic climate change on insects and pathogens in forest environments where large scale tree die-offs have been experienced. Most of these reports are from the Northern Hemisphere, but there are also instances in the Southern Hemisphere, including South Africa where tree die-offs are occurring and where climate is believed to play a role. For example, Euphorbia ingens trees in South Africa have been reported to be dying-off in unprecedented numbers. In this case, it has been suggested that opportunistic pests and pathogens, driven by changes in climate, may be contributing to the death of these trees. Climate change associated tree die-offs are not only of concern in the natural forest environment but are also important in planted forests where commercial impacts are relevant. Overall, climate change has become an important issue relating to tree diseases and it must be taken into consideration when investigating the factors involved in unexpected tree die-offs. Microbiology and Plant Pathology PhD Unrestricted 2018-07-25T09:01:10Z 2018-07-25T09:01:10Z 2018/04/24 2018 Thesis Van der Linde, JA 2018, Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa, PhD Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/65951> A2018 http://hdl.handle.net/2263/65951 en © 2018 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 | UCTD Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa |
| title | Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa |
| title_full | Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa |
| title_fullStr | Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa |
| title_full_unstemmed | Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa |
| title_short | Fungi insects and abiotic factors associated with the death of Euphorbia ingens in South Africa |
| title_sort | fungi insects and abiotic factors associated with the death of euphorbia ingens in south africa |
| topic | UCTD |
| url | http://hdl.handle.net/2263/65951 |