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Section 2: Terrestrial Biomes

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Presentation on theme: "Section 2: Terrestrial Biomes"— Presentation transcript:

1 Section 2: Terrestrial Biomes
Ecosystems on land are grouped into biomes primarily based on the plant communities within them. K What I Know W What I Want to Find Out L What I Learned

2 Essential Questions How is latitude related to the three major climate zones? What are the major abiotic factors that determine the location of a terrestrial biome? How are the terrestrial biomes distinguished based on climate and biotic factors? Copyright © McGraw-Hill Education Terrestrial Biomes

3 Vocabulary Review New continued New biome temperate forest woodland
weather latitude climate tundra boreal forest New continued temperate forest woodland grassland desert tropical savanna tropical seasonal forest tropical rain forest Terrestrial Biomes Copyright © McGraw-Hill Education

4 Effects of Latitude and Climate
Weather is the condition of the atmosphere at a specific place and time. Weather and community variations are driven by global differences in latitude and climatic conditions. Copyright © McGraw-Hill Education Terrestrial Biomes

5 Effects of Latitude and Climate
The distance of any point on the surface of the Earth north or south from the equator is latitude. Light from the Sun strikes the Earth more directly at the equator than at the poles. Copyright © McGraw-Hill Education Terrestrial Biomes

6 Effects of Latitude and Climate
The average weather conditions in an area, including temperature and precipitation, describe an area’s climate. Plants and animals have adapted to the climate of their biome – even small changes in temperature and precipitation can affect them. Copyright © McGraw-Hill Education Terrestrial Biomes

7 Global Warming BrainPOP Terrestrial Biomes
Copyright © McGraw-Hill Education

8 The Greenhouse Effect Personal Tutor Terrestrial Biomes
Copyright © McGraw-Hill Education

9 Visualizing Global Effects on Climate
Animation Terrestrial Biomes Copyright © McGraw-Hill Education

10 Major Land Biomes Tundra
The tundra is a treeless biome with a layer of permanently frozen soil. Temperature range: -70°C–12°C; average precipitation: cm/year Geographic location: South of the polar ice caps in the Northern Hemisphere Constant cycle of freezing and thawing does not allow tree roots to grow. Copyright © McGraw-Hill Education Terrestrial Biomes

11 Major Land Biomes Boreal forest
The boreal forest is a dense evergreen or coniferous forest. Temperature range: -54°C–21°C; average precipitation: cm/year Geographic location: northern part of North America, Europe, and Asia Summers are short and moist; winters are long, cold, and dry Copyright © McGraw-Hill Education Terrestrial Biomes

12 Major Land Biomes Temperate forest
The temperate forest is composed of broad-leaved, deciduous trees Temperature range: -30°C–30°C; average precipitation: cm/year Geographic location: south of the boreal forests in eastern North America, eastern Asia, Australia, and Europe Four well-defined seasons; summers are hot, winters are cold Copyright © McGraw-Hill Education Terrestrial Biomes

13 Major Land Biomes Temperate grassland
Woodlands and mixed shrub communities are found in areas with less annual rainfall than temperate forests Temperature range: 10°C–40°C; average precipitation: cm/year Geographic location: surrounds the Mediterranean Sea, western coast of North and South America, South Africa, and Australia Summers are very hot and dry; winters are cool and wet Copyright © McGraw-Hill Education Terrestrial Biomes

14 Major Land Biomes Temperate grassland
A grassland has fertile soils that are able to support a thick cover of grasses Temperature range: -40°C–38°C; average precipitation: cm/year Geographic location: North America, South America, Asia, Africa, and Australia Summers are hot; winters are cold; moderate rainfall; fires possible Copyright © McGraw-Hill Education Terrestrial Biomes

15 Major Land Biomes Desert
A desert is any area where average evaporation > average precipitation Temperature range: high: 20°C–49°C low: -18°C–10°C; average precipitation: 2-26 cm/yr Geographic location: every continent except Europe Abiotic factors: varying temperatures; low rainfall Copyright © McGraw-Hill Education Terrestrial Biomes

16 Major Land Biomes Tropical savanna
A tropical savanna has grasses and scattered trees, and less precipitation than other tropical areas Temperature range: 20°C–30°C; average precipitation: cm per year Geographic location: Africa, South America, and Australia Summers are hot and rainy; winters are cool and dry Copyright © McGraw-Hill Education Terrestrial Biomes

17 Major Land Biomes Tropical Seasonal Forest
A tropical seasonal forest is analogous to a temperate forest, and has distinct wet and dry seasons Temperature range: 20°C–25°C; average precipitation: >200 cm per year Geographic location: Africa, Asia, Australia, and South and Central America Abiotic factors: rainfall is seasonal Copyright © McGraw-Hill Education Terrestrial Biomes

18 Major Land Biomes Tropical Rain Forest
A tropical rainforest has warm temperatures and large amounts of rainfall throughout the year Temperature range: 24°C–27°C; average precipitation: cm/year Geographic location: Central and South America, southern Asia, western Africa, and northeastern Australia Humid all year; hot and wet Terrestrial Biomes Copyright © McGraw-Hill Education

19 Ecosystems, Organisms, and Trophic Levels
Virtual Lab Terrestrial Biomes Copyright © McGraw-Hill Education

20 Other Terrestrial Areas
Mountains Mountains do not fit the definition of a biome, because their climatic characteristics change with elevation. Copyright © McGraw-Hill Education Terrestrial Biomes

21 Other Terrestrial Areas
Polar Regions Border the tundra at high altitudes Polar regions are cold all year, and covered by a thick layer of ice Average winter temperature is about -30°C Copyright © McGraw-Hill Education Terrestrial Biomes

22 Review Essential Questions Vocabulary
How is latitude related to the three major climate zones? What are the major abiotic factors that determine the location of a terrestrial biome? How are the terrestrial biomes distinguished based on climate and biotic factors? Vocabulary weather latitude climate tundra boreal forest temperate forest woodland grassland tropical savanna tropical seasonal forest tropical rain forest Copyright © McGraw-Hill Education Terrestrial Biomes

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