slide1
Download
Skip this Video
Download Presentation
Semi-Desert

Loading in 2 Seconds...

play fullscreen
1 / 12

Climate Data - PowerPoint PPT Presentation


  • 176 Views
  • Uploaded on

Semi-Desert. What is a Semi- Desert? Usually located “in the semiarid zones between deserts and grasslands” Definition: “This biome is dominated by thorn trees and shrubs adapted to long dry spells followed by brief, sometimes heavy rains.”. Namaqualand

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Climate Data' - ivanbritt


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2

What is a Semi- Desert?

  • Usually located “in the semiarid zones between deserts and grasslands”
  • Definition: “This biome is dominated by thorn trees and shrubs adapted to long dry spells followed by brief, sometimes heavy rains.”
slide3

Namaqualand

Where? Western part of South Africa

Description: “Namaqualand is a wide and beautiful semi-desert region, dotted with giant granite boulder stacks. Between these "koppies" the outstretched sandy savannah land becomes in Springtime (August and September) "God\'s own garden", when the wild spring flowers burst into a kaleidoscope of colours.”

www.africa-adventure.org/.../index.htm

slide5

Namaqualand’s climate zone

  • Ususally hot and dry
  • precipitation is low: less than 200mm or in some other places 100 mm
      • The cause: the cold Benguela current from the Arctic, it absorbs little amounts of humidity so that rain clouds barely form
      • During winter some shower can be expected
        • Avg temp during day: 25-30°C & lower @ night

Night time frosts are usual

Near the coast it’s cooler and as you move more inland the hotter it becomes

Really nice time of the year: in spring; where after the small rainy season, diverse species of wild flowers blossom

http://www.southafrica-travel.net/climate/eklima8.htm

slide9

**Vegetation is diverse among the many sub-regions of N-land**

  • - it definitely depends on the climate and geography
  • In the subregion: Sandveld> coastal plain
    • Dominant vegetation: strandveld
  • In the subregion: Richtersveld> mountain desert>arid
    • Dominant vegetation: vygieveld; on higher ground there patches of veld
    • Huge plant diversity: has at least 355 endemic plants
  • In the subregion: Hardeveld> mountainous
    • rainfall & cooler conditions+higher elevation= little more luxuriant veget.
  • In the subregion: Knersvlatke> huge wavy plain
    • the dominant vegetation is “vygieveld, a dwarf shrubland dominated by leaf-succulent shrubs” ; it is also known for its white quartz gravel
    • http://72.14.253.104/search?q=cache:CrB3cSJbVIIJ:www.plant-talk.org/stories/22namaql.html+vegetation+Namaqualand&hl=en&gl=us&ct=clnk&cd=1
slide10

Animal Life

  • Many animals need to learn to adapt to the intense heat
  • Many species are protected in their national reserves
  • Trophic Levels
  • Speckled tortoise or cattle>succulent plants>decomposers
slide11

Geology

  • In certain sub-regions there are patches of white quartz gravel
  • Known for itsdiamond mines
    • However, the mining is a threat to their diverse plant life
ad