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Subtropical Desert Biome
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Subtropical Desert Biome
Ava Hershberg and Anja Eriksson
Map of Subtropical Deserts
Map
Climate
In subtropcial deserts the temperatures are high, there is limited amounts of precipitation and lots of wind. Temperatures are normally between 84 to 95 degrees Fahrenheit during the summer and 59 to 77 degrees Fahrenheit during winter. Wind speeds can get up to 50 miles per hour. Precipitation doesn't normally go over 12 inches per year with most of the rain happening from July and September.
Latitude
Subtropical deserts usually occur between 15° and 30° latitude.
Latitude
Altitude
Attitude is between 2400 meters to 6000 meters.
Elevation
Food Web
Abiotic Factors in the Desert
Abiotic Factors
- Low precipitation
- Dry air
- Continusously hot temperatures
- Limited soil
- High winds
- Limited water
Relative primary productivity level
Primary Productivity
- Relative primary productivity level in a desert is 70 grams per meter squared per year.
- Major primary producers include Cacti, creisote bushes, thorn Acacias, Annual flowers, Rabbit Brush, Ocotillo, Sage brush.
Human Threats
Human Threats
Human threats to deserts and threats humans have contributed to include, global warming, gold mining, off road vehicles, oil and gas production, and nuclear waste.
Ecosystem Services + harm
Ecosystem Services
+ Harm
-Humans use deserts to mine for gold and as a dump for nuclear waste. The negative effect of gold mining and dumping nuclear waste is that it’s poisonous to the wildlife. Gold mining is poisonous to wildlife when potassium cyanide is used.
Human Threats
More About Human Threats
Off road vehicles can cause permanent damage to habitats
-Sensitive habitats can be disterbed by oil and gas production pollution.
-Global warming increases wildfires and droughts. Wildfires in deserts change the landscape. When shrubs and slow growing trees burn down, fast growing grass replace them. Droughts in deserts dry up water holes that were used by organisms living there. While global warming isn’t just from the productivity of humans, greenhouse gasses created by human activities contribute to global warming.
Citations
Citation
Britannica, The Editors of Encyclopaedia. "tropical and subtropical desert climate". Encyclopedia Britannica, 14 Mar. 2016, https://www.britannica.com/science/tropical-and-subtropical-desert-climate. Accessed 13 September 2022.
“Desert: Mission: Biomes.” NASA, NASA, https://earthobservatory.nasa.gov/biome/biodesert.php.
“Desert Biotic and Abiotic Factors.” Study.com, https://study.com/academy/lesson/desert-biotic-and-abiotic-factors.html#:~:text=Precipitation%2C%20water%20availability%2C%20sunlight%2C,inches%20of%20rain%20per%20year.