Page 25 - Irene Farm Villages Issue 1 2022
P. 25

creatures and plants. Deserts take up   population  of vertebrates  from  the   The Karoo Basin formed 320 million
           50% of Southern Africa’s land mass and   Middle Permian around 270  million   years ago when there was only one giant
           the four desert biomes have as many   years ago, and including the bizarre early   continent on Planet Earth – Pangea. The
           species as the moist biomes.      Jurassic around 190 million years ago.   South Pole was then in the middle of the
             Mary and I described a visit to one of   The 300-page book provides a highly   slab that eventually became Southern
           them in 2019 – the Tankwa Karoo, which   readable account of this unbroken   Africa.
           despite its baking, gravelly plains, is part   80  million  year  fossil record of  the   Living Deserts contains spectacular
           of our largest desert biome, the plant-  ancestors of today’s mammals and birds,   photographs and many handy maps
           rich  ‘Succulent  Karoo’ which includes   which are being unearthed in the Karoo.   and drawn illustrations.
           Namaqualand and the Richtersveld.   His account also includes the greatest
           As a desert region of this size, it has   extinction event in the planet’s history.  Published by Struik Nature - Price: R450
           the largest number of succulent plants
           in the world.  This 150km wide belt
           running parallel with the Atlantic coast
           starts not very far north of Cape Town
           and extends into Namibia. Its rainfall is
           between 20 and 290mm a year, yet it
           has 6 356 known species, many of them
           dependent on the nightly fogs.
             Biologists across the world are
           fascinated by the Succulent Karoo,
           which is considered to be one of the
           planet’s most interesting and diverse
           arid ‘hot spots’.
             One of  the most  interesting parts
           of  Lovegrove’s  book  embraces  his
           thoughts on ‘global heating’ (he prefers
           this phrase to ‘global warming’) which,
           he avers is a threat to this nation that
           few South Africans take seriously. Its
           quite rapid onset has been scary and
           Lovegrove is concerned by the changes
           he has witnessed during his working life
           as a biologist.
             The author devotes a chapter to a topic
           that was underplayed in his previous book
           on the desert biomes. The new chapter
           provides a fascinating view of the Karoo’s
           beginnings and its extraordinary yield
           of  magnificent  fossils  of  its  prehistoric


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