chapter 6 – biomes living world unit. major world biomes desert tropical rain forest deciduous...
Post on 27-Mar-2015
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Chapter 6 Biomes Living World Unit Slide 2 Major world biomes Desert Tropical Rain Forest Deciduous Forest (temperate and tropical) Savannah/Grasslands ( temperate and tropical) Taiga (aka Boreal forest, coniferous forest) Tundra Mountains Slide 3 Dry woodlands and shrublands (chaparral) Temperate grassland Temperate deciduous forest Boreal forest (taiga), evergreen coniferous forest (e.g., montane coniferous forest) Arctic tundra (polar grasslands) Tropical savanna, thorn forest Tropical scrub forest Tropical deciduous forest Tropical rain forest, tropical evergreen forest Desert Ice Mountains (complex zonation) Semidesert, arid grassland Tropic of Capricorn Equator Tropic of Cancer Biomes Slide 4 Mountain Ice and snow Altitude Tundra (herbs, lichens, mosses) Coniferous Forest Tropical Forest Deciduous Forest Tropical Forest Deciduous Forest Coniferous Forest Tundra (herbs, lichens, mosses) Polar ice and snow Latitude Slide 5 Desert General Geographic region: Climate information: Typically near 30 o N and 30 o S latitude Near interior of continents 30% of Earths surface Evaporation exceeds precipitation Tropical desert: hot and dry year round Temperate desert: cooler in winter; more vegetation; more precipitation than tropical Cold desert: cold winters/hot summers Slide 6 Desert General fauna: General flora: Lizards, snakes, kangaroo rat, roadrunner, jack rabbit Most animals are small, active during cool parts of day and night, wastes contain little water Cactus, yucca, agave 3 adaptations: no leaves, store water, open stomata only at night. Lifecycles: bloom, seed, and die quickly Slide 7 Desert Environmental concerns: Pictures: Deserts are expanding (desertification) Storage of toxic wastes Testing for nuclear weapons Slide 8 Grasslands General Geographic region: Climate information: Continent interiors Enough precipitation to support grasses and shrubs, but fewer trees Can be tropical, temperate, or polar Slide 9 General fauna: General flora: Grasslands Hoofed herbivores, grazing animals Giraffe, elephant, warthog, gazelle, tiger Mostly grasses with deep roots, fewer trees that are drought tolerant Plants must be able to re-grow after frequent fires Slide 10 Environmental concerns: Grasslands Frequent fires, overgrazing, desertification Pictures: Slide 11 Tropical Rain Forest General Geographic region: Climate information: Found near equator. Covers 2% of Earth Lots of warmth and direct sunlight Lots of precipitation Slide 12 General fauna: General flora: Tropical Rain Forest HUGE biodiversity Monkeys, frogs, snakes, macaw, etc Stratification to reduce competition Contains half of terrestrial species HUGE biodiversity Ground layer, shrub layer, understory, canopy, emergent layer Slide 13 Environmental concerns: Tropical Rain Forest Deforestization, Slash and burn agriculture Pollution/resource depletion Pictures: Slide 14 Harpy eagle Toco toucan Wooly opossum Brazilian tapir Black-crowned antpitta Shrub layer Canopy Emergent layer Understory Ground layer Ground layer 0 5 10 15 20 25 30 35 40 45 Height (meters) Tropical Rain Forest Slide 15 Deciduous Forest General Geographic region: Climate information: Further from equator Between 30 o and 60 o N and S latitude Significant change in temperatures during seasons. Precipitation fairly evenly spread over year. Warm summers, cold winters Slide 16 General fauna: General flora: Deciduous Forest Many top predators have been extirpated (wolves, cougars, bear) Deer, raccoons, squirrel, (our area animals) Trees drop leaves in winter Fewer tree species than TRForests, but more ground level plant life Slide 17 Environmental concerns: Deciduous Forest Loss of biodiversity Large predators removed Deforestization Pictures: Slide 18 Taiga (Boreal Forest) General Geographic region: Climate information: Found in the north Just south of the arctic tundra Winters are long, dry, and very cold. Winter sunlight is 6-8 hours a day. Mild summers with 19 hours of sunlight a day. Slide 19 General fauna: General flora: Taiga (Boreal Forest) Moose, wolves, rabbits, bear, eagles Coniferous trees, some wildflowers and grasses Slide 20 Environmental concerns: Taiga (Boreal) Forest Drilling for oil Deforestization Air pollution Pictures: Slide 21 Mountains General Geographic region: Climate information: Frequently on continent edges; where tectonic plates collide 25% of Earths surface Varies depending on elevation. Higher elevation = colder Leeward side of mountains gets less precipitation Slide 22 General fauna: General flora: Mountains Big horn sheep, mountain goats, taiga animals at lower elevations Little flora at high elevation, lichen, conifers as you go down in elevation Slide 23 Environmental concerns: Mountains Air pollution Mining Pictures: