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Lesson 7 Biomes What are the six major biomes found on Earth? What factors determine the type of biome found in an area? Do Now rainforest Word Splash desert grassland deciduous forest tundra taiga /boreal forest Essential Question 1. What are the six major biomes found on Earth? 2. What factors determine the type of biome found in an area? Vocabulary Biome A group of land ecosystems with similar climates and organisms Canopy large leaves of trees that form a roof like projection or covering shrubs and plants growing beneath the Understory the main canopy of a forest. Savanna Permafrost grassland region with scattered trees, grading into either open plain or woodland, usually in subtropical or tropical regions. permanently frozen soil below surface Assignment 1. Read pages 58-67. 2. Complete the graphic organizer for each biome. Rain Forest Biome Location Climate Temperature Precipitation Vegetation Animals Rain Forest Biome Location •found in the equatorial regions of South America and Africa Climate Temperature •little temperature variation •warm Precipitation •large supply of precipitation, high humidity Vegetation •dense and diverse assortment of vegetation Animals •many of the animals are arboreal tree dwellers (never come down to the surface) •Monkeys, snakes, insects, parrots, bats Desert Biome Location Climate Temperature Precipitation Vegetation Animals Desert Biomes Location •Western United States •Parts of Central and South America •Parts of Africa and Asia •Australia Vegetation •low diversity of plants •Cacti and sparse grass Climate Temperature •hot days •cold nights Precipitation •less than 25cm rain year •little precipitation, often in heavy showers Animals •animals may obtain water from food, are nocturnal (active at night), •Lizards, snakes, small rodents, insects Grassland Biome Location Climate Temperature Precipitation Vegetation Animals Grassland Biome Location •found in central North America •Central Asia •Southern Africa •Australia •Examples of savannas – Serengeti Plains (Tanzania); llanos (Venezuela and Columbia); Cerrado (Brazil); pine savannas (Belize/ Honduras) Vegetation •long or short grasses •thick humus layer • fire common and necessary to renew the biome by burning out shrubs while the grass survives Climate Temperature •Temperate to subtropical areas Precipitation •25-75 cm of rain a year Animals •Herbivores •Bison •rabbits •Gophers •predators - wolves, coyotes, rattlesnakes Deciduous Forest Biome Location Climate Temperature Precipitation Vegetation Animals Deciduous Forest Biome Location •found in eastern North America, •western Europe •eastern Asia •Chile Vegetation •broad-leaved trees (which shed leaves), soil rich due to decomposition of leaf litter • trees form a canopy but enough light filters through to provide energy for a lower layer of trees and shrubs •Oak, maple, beech, shrubs Climate Temperature •temp. vary greatly •Cold winters •Warm summers Precipitation •Wet summers •50cm per year Animals •larger number of producers supports a large number of consumers •Fox, rodents, owls, hawks, insect, deer Taiga/Boreal Forest Biome Location Climate Temperature Precipitation Vegetation Animals Taiga/Boreal Biome Location •found in broad region below the tundra in North America, Europe and Asia Vegetation •coniferous trees (spruce, fir, pine etc.) •little vegetation found near the ground because of low light levels and soil is acidic due to needle decomposition Climate Temperature •Cold winters •Summers warm Precipitation •Snow •Summers rainy Animals •deer, •Moose •Caribou •Lynx •Hares •fox Tundra Biome Location Climate Temperature Precipitation Vegetation Animals Tundra Biome Location found in the northern hemisphere above the tree line Climate Temperature •Cold •average winter -30° F •average summer 37-54° F Precipitation •little precipitation •Dry •permafrost Vegetation •Mosses •Grasses •Shrubs •Small trees (willow) Animals •Arctic fox •Caribou •polar bear •migratory birds •penguins Mountains And Ice • not part of major biome • mountain ranges and land covered in ice Assignment 1. Read science explorer page 128. 2. Complete science explorer page 130 and 131. Answer the essential questions 1. What are the six major biomes found on Earth? 2. What factors determine the type of biome found in an area? Ticket out the door • Complete science explorer page 132.