Presentation Transcript
Slide 1:Deserts and the planet Reduced visibility
Human diseases Deserts Non-deserts Cross-desert dust movement Desert soil Desert water Desert vegetation Global wind system Global environment and desert ecosystems Why deserts matter?
Slide 3:Deserts and the rest of the globe Reduced visibility
Human diseases
Rainforest fertilization
Marine fertilization
Coral disease Deserts Non-deserts Cross-desert dust movement Desert soil Desert water Desert vegetation Global wind system Knowledge gaps
How frequent?
How far?
Statistics on the frequency of dust
How much is “natural” and how much is due to desertification? Shifting sand dunes move from deserts to non-deserts?
Slide 4:Dune crest Controlled grazing - stable dunes Overgrazing - shifting dunes Rangelands in arid drylands – satellite image (bottom right) and air photo
Slide 5:Goods – the silk road, the perfume road
the drug road (?)
Non-desert migratory birds Cross desert migrations Desert exports Non-renewable resources
Bioprospecting – desert plant biochemicals Warmth-requiring agricultural commodities
Slide 7:Goods – the silk road, the perfume road
the drug road (?)
Non-desert migratory birds Cross desert migrations Desert exports Non-renewable resources
Bioprospecting – desert plant biochemicals Fish Warmth-requiring agricultural commodities
Slide 9:Goods – the silk road, the perfume road
the drug road (?)
Non-desert migratory birds Cross desert migrations Desert exports Non-renewable resources
Bioprospecting – desert plant biochemicals Contribution of deserts to global science
Physiology
Ecology
Geology Fish Warmth-requiring agricultural commodities Solar energy
Slide 10:By Carbon sequestration
Soil conservation
Afforestation
By reducing albedo
Vegetation conservation Mitigation of global climate
Slide 12:Non-deserts affect deserts
Global warming and deserts
Tourism