Land Biomes of the World Chapter 6. Earth’s Major Biomes Tundra.

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Presentation transcript:

Land Biomes of the World Chapter 6

Earth’s Major Biomes Tundra

Very short growing season Little precipitation (10-25 cm / yr) Very cold (only summer gets above freezing) and windy Permafrost Dry Low species diversity

Earth’s Major Biomes Boreal Forest (Tiaga)

Boreal Forest (Taiga) Short growing season Low precipitation (~50 cm / yr) Dominated by conifers (spruce, fir), but also has aspen, birch

Earth’s Major Biomes Temperate Rain Forest

Cool; high precipitation (~127 cm / yr) Dominated by evergreens (hemlock, spruce, cedar) Heavily logged

Earth’s Major Biomes Temperate Deciduous Forest

Hot summers, cold winters Moderate precipitation ( cm / yr) Dominated by oaks, hickory, maple Commonly converted to agriculture

Earth’s Major Biomes Grasslands

Hot summers, cold winters Low to moderate precipitation (25-75 cm / yr) Dominated by tallgrass or shortgrass prairies Heavily converted to agriculture

Earth’s Major Biomes Chaparral

Earth’s Major Biomes Chaparral Characterized by: Dry summers, mild winters Frequent fires Dominated by short pines, evergreen shrubs, scrub oak (but varies worldwide)

Earth’s Major Biomes Deserts

Earth’s Major Biomes Deserts Characterized by: Wide daily variations in temperature Very dry (<25 cm precipitation / yr) Sparse plant coverage

Earth’s Major Biomes Savanna

Earth’s Major Biomes Savanna Characterized by: Precipitation cm / yr, but very seasonal with extended dry periods Dominated by grasses, with occasional trees African most famous for herds of wildebeest, antelope, zebra

Earth’s Major Biomes Tropical Rain Forests

Earth’s Major Biomes Tropical Rain Forests Characterized by: Very high precipitation cm / yr Very nutrient-poor soil Extremely high primary productivity Extremely high species richness

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