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South Africa is one of the world centres for cycad diversity. With
39 species of cycad, it ranks third, behind Australia and Mexico,
for the countries with the highest numbers of cycads. Two species
from southern Africa are extinct in the wild (Encephalatos woodii,
shown above, being one of them) and all but one of the remaining
South African cycads are believed to be threatened with extinction.
Cycads are therefore one of the most threatened groups of plants
in South Africa. They are also well known to gardeners and are an
ideal flagship group to highlight the problems facing plants in
South Africa.
Research
over the past ten years has focussed on important aspects of cycad
biology including pollination, recruitment, and aspects of their
life histories related to reproduction and survival. Among the outcomes
of this research have been two papers that showed unequivocally
that insects were the most effective pollinators of two African
cycads.
Research,
using matched photographs, has also shown how cycad populations
have declined over a period of several decades, and has helped to
confirm the main causes of threat, i.e. collecting of mature plants
from the wild and habitat destruction.
Current research is aimed at developing population models to guide
conservation actions and on techniques for the restoration of cycad
populations in the wild.
In addition to research, policy development is an important component
of the cycad project. Within South Africa, we contribute to the
development of national and provincial policy. John Donaldson is
also chairperson of the IUCN Cycad Specialist Group which comprises
an internationl group of scientists, conservationists, and nurserymen
who provide expert advice on cycad conservation and trade. One of
the main tasks of the group is to develop an Action Plan and this
is due for completion early in 2000.
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