6-3 grassland, desert, and tundra biomes page 155
TRANSCRIPT
6-3 Grassland, Desert, and Tundra Biomes
Page 155
A. Savannas and Tropical Seasonal Forests
• 1. A savanna is tropical and dominated by grasses, shrubs, and small trees.
A. Savannas and Tropical Seasonal Forests
• 2. Rainfalls mainly during wet season which lasts a few months.
A. Savannas and Tropical Seasonal Forests
• 3. African Savannas support many herbivores and carnivores such as cheetahs and lions.
A. Savannas and Tropical Seasonal Forests
• 4. Plants need to adapt to periods of little rainfall.
A. Savannas and Tropical Seasonal Forests
• 5. Grazing herbivores, such as elephants, migrate towards areas of rain and newly grown plants.
B. Temperate Grasslands
• 1. Covers large areas of interior continents where rainfall is moderate.
B. Temperate Grasslands
• 2. An example are the prairies of North America.
B. Temperate Grasslands
• 3. Mountains maintain grasslands by absorbing most of the moisture from rainclouds, leaving little available for the grasslands.
B. Temperate Grasslands
• 4. Grasses and wildflowers are the most common plants.
B. Temperate Grasslands
• 5. Due to little rain and harsh temperatures, plants die back to their roots, providing nutrients back to the soil and making it very fertile.
B. Temperate Grasslands
• 6. Bison, burrowing owls and prairie dogs are common animals.
B. Temperate Grasslands
• 7. Farming and overgrazing have damaged this biome.
C. Chaparral
• 1. Temperate shrub land biome found in all parts of the world.
C. Chaparral
• 2. Dry climates with little to no rain.
C. Chaparral
• 3. Plants are low-lying evergreen shrubs and small trees.
C. Chaparral
• 4. Plants must be adapted to potential fires.
C. Chaparral
• 5. Quails, lizards, and chipmunks are some animals that can camouflage to survive here.
C. Chaparral
• 6. A major threat is human influence, developing land for commercial use.
D. Deserts
• 1. Have widely scattered vegetation and receive very little rain.
D. Deserts
• 2. Due to little insulating moisture, the temperatures can be very hot during the day to freezing at night.
D. Deserts
• 3. Plants need adaptations to survive in dry desert conditions.
D. Deserts
• 4. Cacti, for example, have fleshy stems and modified leaves with spikes that store water.
D. Deserts
• 5. Reptiles, such as Gila monsters and rattle snakes, have thick scaly skin that prevents water loss.
E. Tundra
• 1. Located in northern arctic regions; very cold and dry.
E. Tundra
• 2. Permafrost are deeper layers of soil that are permanently frozen thru the year.
E. Tundra
• 3. Mosses, lichens and over 400 types of wildflowers (fireweed) grow here.
E. Tundra
• 4. Migratory birds fly here to breed during summer.
E. Tundra
• 5. Caribou and wolves migrate in search of food.
E. Tundra
• 6. Global warming and oil drilling are threats to the Tundra.