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Effects of temperature and water availability on the productivity, physiology and isotopic (δ¹³c) discrimination of two Myrtacae species: Eucalyptus grandis and Syzygium guineense
Thesis (MSc)--Stellenbosch University, 2025.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2025
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| _version_ | 1867613927080198144 |
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| access_status_str | Open Access |
| author | Mbuyisa, Yenziwe Ngenzeni |
| author2 | Midgley, Guy F. |
| author_browse | Mbuyisa, Yenziwe Ngenzeni Midgley, Guy F. |
| author_facet | Midgley, Guy F. Mbuyisa, Yenziwe Ngenzeni |
| author_sort | Mbuyisa, Yenziwe Ngenzeni |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2025. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/133094 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:43:54.909Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/133094 Effects of temperature and water availability on the productivity, physiology and isotopic (δ¹³c) discrimination of two Myrtacae species: Eucalyptus grandis and Syzygium guineense Mbuyisa, Yenziwe Ngenzeni Midgley, Guy F. Drew, David Stellenbosch University. Faculty of Science. Dept. of Botany & Zoology. Climatic changes Myrtaceae -- Physiology Plant physiology -- Effect of environment on Eucalyptus grandis -- Growth Plant-water relationships Myrtaceae -- Effect of temperature on Syzygium guineense -- Propagation Isotopes Plants -- Effect of carbon dioxide on Plants -- Effect of atmospheric carbon dioxide on UCTD Thesis (MSc)--Stellenbosch University, 2025. Mbuyisa, Y. N. 2025. Effects of Temperature and Water Availability on the Productivity, Physiology and Isotopic (δ¹³C) Discrimination of Two Myrtacae Species: Eucalyptus grandis and Syzygium guineense. Unpublished masters thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/items/7a3cbad3-3c24-4825-9399-e63d7f9570fa ENGLISH ABSTRACT: Climate change projections predict a future with elevated atmospheric CO2, increased temperatures, and altered precipitation patterns, impacting ecosystem function and species distributions. Afforestation initiatives, often utilizing fast growing species like Eucalyptus grandis, are crucial for carbon sequestration. However, the impact of these changes on native species, such as Syzygium guineense, remains relatively understudied. This study investigated the growth, physiological, and isotopic responses of E. grandis and S. guineense seedlings to varying temperature and water availability regimes. Results demonstrated significant species-specific differences in growth and water use strategies. E. grandis exhibited higher growth rates and a more conservative water use strategy, characterized by limited stomatal conductance and higher water use efficiency (WUE). In contrast, S. guineense showed greater plasticity in response to temperature, increasing height growth at higher temperatures. However, this may render it more vulnerable to drought stress. The study further revealed significant effects of temperature, water availability, and species on root δ¹³C, highlighting the coordinated response of both above- and belowground tissues to environmental stress. These findings underscore the importance of considering species-specific responses to climate change and the need for further research on native species to inform effective afforestation and conservation strategies in the face of global change. AFRIKAANSE OPSOMMING: Geen opsomming beskikbaar. Masters 2025-07-17T11:42:00Z 2025-07-17T11:42:00Z 2025-03 Thesis https://scholar.sun.ac.za/handle/10019.1/133094 en Stellenbosch University 85 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Climatic changes Myrtaceae -- Physiology Plant physiology -- Effect of environment on Eucalyptus grandis -- Growth Plant-water relationships Myrtaceae -- Effect of temperature on Syzygium guineense -- Propagation Isotopes Plants -- Effect of carbon dioxide on Plants -- Effect of atmospheric carbon dioxide on UCTD Mbuyisa, Yenziwe Ngenzeni Effects of temperature and water availability on the productivity, physiology and isotopic (δ¹³c) discrimination of two Myrtacae species: Eucalyptus grandis and Syzygium guineense |
| title | Effects of temperature and water availability on the productivity, physiology and isotopic (δ¹³c) discrimination of two Myrtacae species: Eucalyptus grandis and Syzygium guineense |
| title_full | Effects of temperature and water availability on the productivity, physiology and isotopic (δ¹³c) discrimination of two Myrtacae species: Eucalyptus grandis and Syzygium guineense |
| title_fullStr | Effects of temperature and water availability on the productivity, physiology and isotopic (δ¹³c) discrimination of two Myrtacae species: Eucalyptus grandis and Syzygium guineense |
| title_full_unstemmed | Effects of temperature and water availability on the productivity, physiology and isotopic (δ¹³c) discrimination of two Myrtacae species: Eucalyptus grandis and Syzygium guineense |
| title_short | Effects of temperature and water availability on the productivity, physiology and isotopic (δ¹³c) discrimination of two Myrtacae species: Eucalyptus grandis and Syzygium guineense |
| title_sort | effects of temperature and water availability on the productivity physiology and isotopic δ¹³c discrimination of two myrtacae species eucalyptus grandis and syzygium guineense |
| topic | Climatic changes Myrtaceae -- Physiology Plant physiology -- Effect of environment on Eucalyptus grandis -- Growth Plant-water relationships Myrtaceae -- Effect of temperature on Syzygium guineense -- Propagation Isotopes Plants -- Effect of carbon dioxide on Plants -- Effect of atmospheric carbon dioxide on UCTD |
| url | https://scholar.sun.ac.za/handle/10019.1/133094 |
| work_keys_str_mv | AT mbuyisayenziwengenzeni effectsoftemperatureandwateravailabilityontheproductivityphysiologyandisotopicd13cdiscriminationoftwomyrtacaespecieseucalyptusgrandisandsyzygiumguineense |