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SAAB Webinar Invitation 18 May 2022

Join Zoom Meeting
https://zoom.us/j/98319819522?pwd=YktvaG5Lc3VvanNxSWY4czZxTG1HZz09

Meeting ID: 983 1981 9522
Passcode: 651949

Abstract:

Since 1994, I (we) have undertaken studies, mainly with post-graduate students, on numerous threatened plant species in South Africa. This follows good experiences undertaking such studies on Banksia spp. in Western Australia. It started with a road trip looking at numerous threatened species in the old Transvaal. The endangered (EN) Euphorbia barnardii (1994), Haworthia koelmaniorum (1995/6), and the Critically Endangered (CR) Euphorbia clivicola (1996/7) were the initial studies. A more challenging study started in 1997, which continues to this day, on the CR Protea roupelliae ssp. hamiltonii (“a Protea story”). A theme with some of these studies is previously monitored declines in numbers, but a general lack of, or ineffective, action to stem the declines. The way fire is managed has also been shown to be critical for many of them. These studies were followed by Kniphofia umbrina (CR) in Swaziland (Eswatini), Ceropegia decidua subsp. pretoriensis (CR), Adenium swazicum (CR), six Delosperma spp. (mesems, two EN, 4 CR). Aloe spp., particularly A. peglerae (focus on pollination), and Kumara (Aloe) plicatilis (Western Cape), became a new focus beyond 2000, with a particular interest in pollination.  These were followed by KZN and Eastern Cape succulent Euphorbia species, E. umfoloziensis (Extinct in the wild?), and E. bupleurifolia, a “common species” becoming uncommon at a rapid rate.  Illegal harvesting of small succulent plants from the wild and trade have been problematic for many years. Indigenous medicinal plant species have also been a focus throughout. Finally, studies on protected tree species, such as marula, baobab and the pepperbark tree have been undertaken and continue. 

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