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BIOMES PP. 105-123
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BIOMES Different climates lead to different communities of organisms, especially vegetation Average temperature and precipitation Soil
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http://www.discovery.com/tv-shows/other- shows/videos/assignment-discovery-shorts-iii- biomes-deserts /
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DESERTS Tropical, temperate, polar Determined by precipitation, not temperature Larger deserts are inland on continents Extreme temperatures between day and night
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TROPICAL DESERTS Hot, dry year round Few plants Hard, windblown sand and rocks (TV Westerns) Sahara/Namib Africa http://i.livescience.com/images/i/000/030/972/i02/s hutterstock_93404287.jpg?1347483719
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More precipitation than tropical Summer days— high temps Winter days— low temps. Mojave—S. CA TEMPERATE DESERTS http://ww2.valdosta.edu/~mhmorgan/Mojave%20pic% 203.jpg
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TEMPERATE DESERTS Drought-resistant shrubs Cacti/Succulents Animals—Insects, reptiles, small mammals, predator birds http://carranzabanuelos3.weebly.com/uploads/ 2/6/8/3/26838685/5531298_orig.jpg
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COLD DESERTS Cold winters, summers warm/hot Low precipitation Sparse vegetation Gobi, China http://static.guim.co.uk/sys- images/Travel/Pix/pictures/2012/4/26/1335451740 107/The-Gobi-desert-in-Mongol-008.jpg
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DESERT PLANT ADAPTATIONS Shed leaves in hot, dry periods to conserve water Mesquite, creosote http://texastreeplanting.tamu.edu/treepictures/mesquite _honey.jpg http://www.redcliffsdesertreserve.c om/wp- content/uploads/2011/12/Creosote -bush-in-flower-2.jpg
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DESERT PLANT ADAPTATIONS Succulent (fleshy) to store water in tissues No leaves (no evapotranspiration Spines reduce water loss and protect from herbivores Deep roots to reach groundwater Saguaro http://traveladdictsnet.c.presscdn.com/wp- content/uploads/blogger/- AwzhosmtWgE/UZwPnmvkLUI/AAAAAAAAHOI/_oo Zo_DRur8/s400/Arizona-Saguaro-Cactus.jpg
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DESERT PLANT ADAPTATIONS Evergreen plants with waxy coating to reduce water loss Stomata open at night to get carbon dioxide Texas Mountain Laurel http://www.indianolatx.com/AIndPics/Plants/laurelpods603 66_39.jpg
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DESERT ANIMAL ADAPTATIONS Small, scales Nocturnal Concentrated waste Insects get water from dew/food http://blog.uvm.edu/cgoodnig/files/20 14/10/fennec-fox.jpg
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DESERT SOILS Long recovery period from disturbances Slow plant growth, low species diversity Slow nutrient recycling due to sparse bacteria Lack of water Nutrient-poor, mineral rich
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GRASSLANDS Mostly interiors of continents; too moist for deserts; too dry for forests Not enough moisture for trees Low precipitation, various average temperatures https://www.youtube.com/watch?v =q_t15sZh0-s https://www.youtube.com/watch?v =q_t15sZh0-s
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SAVANNA PLANT ADAPTATIONS o Widely clumped trees with thorns to protect from herbivores o Drought and fire resistant o Deep roots to reach groundwater http://room42.wikispaces.com/fil e/view/4savanna.jpg/34448245/4 99x312/4savanna.jpg
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SAVANNA ANIMAL ADAPTATIONS Farsighted, fast Grazing at different areas to reduce competition Migration in dry periods Giraffes, zebra, antelopes, lions, hyenas, humans http://thegreatsavanna.weebly.com/uploads/1/4/2/ 8/14284847/4794163.gif?1352213180
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DISTRIBUTION Interior of continents North America (prairies) South America (pampas) Eurasia (steppes) Midwestern/West U.S. and Canada (short- grass and tall-grass prairies)
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TUNDRA—POLAR GRASSLANDS PLANT ADAPTATIONS Low-growing to escape bitter winds; conserve heat Permafrost—short, shallow roots Lichens, moss, grass, dwarf shrubs http://schmoker.org/TundraLife/Photos/Mos sCampion-cushions-6.jpg
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TUNDRA—POLAR GRASSLANDS ANIMAL ADAPTATIONS Migratory birds Thick fur (snowy fox, oxen) Feathers (snowy owl) Burrowing (lemmings) http://www.discovery.com/tv- shows/other- shows/videos/assignment- discovery-shorts-iii-biomes-tundra/ http://www.discovery.com/tv- shows/other- shows/videos/assignment- discovery-shorts-iii-biomes-tundra/ http://thetundrabiome01.weebly.com/uploads/1/8/5/ 1/18519458/288476185_orig.jpg
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MOUNTAIN BIOMES One-fourth of earth’s land surface Dramatic changes in altitudes, climate, soil, vegetation over short distances Steep slopes create soil erosion (landslides) or humans (timber cutting, agriculture)
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ECOLOGICAL ROLES OF MOUNTAINS Majority world’s forest (biodiversity habitat) Sanctuaries for animal species 75% freshwater stored in glacial ice (most in mountain area) Hydrologic cycle
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PLANT ADAPTATIONS Shape of trees shed snow Waxy needles to reduce water loss http://cache4.asset- cache.net/gc/108730806-coniferous- trees-with-snow- gettyimages.jpg?v=1&c=IWSAsset&k=2& d=ceKD2LJv%2B89nRRmKG4p7F25lwYzld mzv8rVsukLv7yM%3D
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ANIMAL ADAPTATIONS Migratory birds Hibernation Thick coats http://oakdome.com/k5/lesson- plans/powerpoint/images/taiga-forest- ecosystems/3-taiga-forest-ecosystem.gif
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PLANT ADAPTATIONS Broadleaf evergreens to catch light through dense canopy Climbing vines to reach sunlight http://www.apethana.com/gallery/data/m edia/4/Lianas%20in%20Interior%20of%20Low land%20Rainforest,%20La%20Selva%20Biolo gical%20Station,%20Costa%20Rica.jpg
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ANIMAL ADAPTATIONS Birds with beaks to eat fruits/nuts Climbing animals to escape dense vegetation http://www.animalsinthetropicalrainforest.com/wp- content/uploads/2014/11/Animals-In-The-Tropical- Rainforest1-300x226.jpg
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TROPICAL RAINFOREST Nutrient-poor soil Fast decomposition due to moist, warm climate with plenty of vegetation on forest flower Fast uptake by dense vegetation creates the nutrient-poor soil
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TROPICAL DRY RAINFOREST Warm year round with wet/dry season Lower tree heights; less dense
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TEMPERATE RAINFOREST Coastal areas with ample rainfall and moisture from dense ocean fog Ocean moderates climate (mild winters and cool summers) Coast of North America (Canada to Northern California)
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TEMPERATE DECIDUOUS FOREST Moderate average temperature with changing seasons Long, warm summers and cold (not severe) winters Abundant precipitation Fertile soil—Slow decomposition with ample leaf litter builds up nutrients
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ANIMAL ADAPTATIONS Hibernation Migratory birds Camouflauge http://www.buzzle.com/img/articleImag es/335617-32323-1.jpg
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DEGRADATION OF MOUNTAINS Agriculture Timber extraction Increasing tourism Urban air pollution Increased UV due to ozone depletion Soil damage from off road vehicles
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