Steppe

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A short powerpoint about the Steppe climate, and what it means to gardeners in Western North America.

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Steppe

  1. 1. Steppe climate <ul><li>Continental COLD winters (<0 F) </li></ul><ul><li> HOT summers (>100F) </li></ul><ul><li>Semi Arid (10>25” precipitation) </li></ul><ul><li>( NOT Arid (arid = <10” precipitation) </li></ul><ul><li>Pedocal soils High calcium, mineral rich </li></ul><ul><li>Intense Wind and Solar Insolation </li></ul>
  2. 2. Semiarid Continental climate regions ( Steppe ) Western American Prairie & Intermountain shrubland Patagonian Puna and Pampas Southern African Karoo & Highveld Central and Western Asian Steppe
  3. 3. Steppe-sisters Western Plains Prairies 8000 The Steppes of Asia 20,000 Karoo 8,000 Patagonia 5,000 California Floristic Province (7000 species) North Central Coastal Chile 3000 species Cape Floristic Kingdom 15,000 species Mediterranean Floristic region (40,000 species) Too mild: sorry) Total Steppe taxa 40,000 Mediterranean taxa 65,000
  4. 4. Steppe Maritime climate (Humid, near coast) Steppe Mediterranean climate (on SW corner of Continents) Desert
  5. 5. Ungulates of the Steppes Ibex Pronghorn Guan Guanaco Bontebok South Africa Central Asia North America Patagonia
  6. 6. Steppe Superhighways of migration 12-30,000 BC >1,000,000 BC >100,0000 BC Cradle of humankind
  7. 7. Petroglyphs Petroglyphs Anasazi petroglyph in Utah 10,000 year old Ibex petroglyph in Mongolian Altai San pictograph in The Drakensberg Ancient Patagonian Petroglyphs in Argentina
  8. 8. Frederick Remington painting of cowboys Khoisan herdsmen in the karoo Gaucho In Patagonia Steppe horsemen People of The Steppes
  9. 9. Strong Parallels in Steppe flora <ul><li>Top families are the same in all 4 steppes </li></ul><ul><li>Grass Family (Poaceae) </li></ul><ul><li>Bean Family (Fabaceae) </li></ul><ul><li>Figwort Family (Scrophulariaceae) </li></ul><ul><li>Cress Family (Brassicaceae ) </li></ul><ul><li>Bulbs: Iris Family (Iridaceae) etc. </li></ul>
  10. 10. Solanum tuberosum Zea mays Cucumis cornuta Brassica oleracea Triticum sp . Barley
  11. 11. Sea of Tethys
  12. 12. Indian Grass Sorghastrum nutans Pampas Grass Cortaderia selloana Korean feather grass Calamagrostis brachytricha Sourgrass Merxmuellera macowanii North America South America South Africa Asia
  13. 13. Figwort Family Scrophulariaceae South Africa: Aptosimum procumbens Asia: Veronica caespitosa Colorado: Penstemon crandallii Patagonia: Ourisia microphylla
  14. 14. Anarthrophyllum desideratum Astragalus angustifolius Astragalus aretioides Lotononis sericea Asia North America South America South Africa
  15. 15. The Rockies The Tien Shan The Andes The Drakensberg Great Mountain Ranges
  16. 16. What I did last summer… Camel trek in Mongolia Primula xanthobasis
  17. 17. Spectacular Blues! Gentiana grandiflora Aquilegia glandulosa Dracocephalum grandiflorum Aquilegia sibirica

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