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Land Biomes Biome Tropical Rain Forest Temperate Deciduous Forest Location Abiotic Factors Near Equator No Seasons Little change in temperature Hot and Moist Ideal for bacteria Rainfall: 100 in/yr Topsoil: <1 cm Limited sunlight Plants grow in layers Shallow/wide roots Camouflage is common Temperate zone Most humans live here 4 seasons deep soil layersrich in nutrients Precipitation: 30100 in/yr Deciduous (leaf) trees Increased sunlightdiversity Trees adapt to winter by becoming dormant Animals lose winter coat Long roots Coniferous trees (needle bearing) Low sunlight Animals hibernate/burrow etc. for cold winters Greatest number of grazing animals Plants grow in tufts and are resistant to droughts Thorns and sharp leaves Found only in Northern Hemisphere Savanna (Tropical Grassland) Threats Taiga Plant and Animal Adaptations Found in tropics near the equator Winters are long and cold Precipitation: 100 in/yr mostly snow Soil poor in nutrients Rainy and dry season Precipitation: 25100 in/yr Fire plays large role Humans stripping rainforests for logging Plants and animals are displaced Are being cleared to provide housing for humans Mining Pollution Invasive species Changes in fire management Land Biomes Steppe (Dry, Cold Grassland) Russia and Ukraine Prairie and Steppe (Grassland areas) Chaparral Primarily in coastal areas with Mediterranean climates. Deserts Depends on type of desert-found in many locations Tundra North of the artic circle <50 in/yr precipitation Mountains play a role in climate conditions High winds 50 cm/yr precipitation Climate: hot, dry summers, mild, wet winters. Slight variations in seasonal temperatures <10 in/yr of rain Little to no topsoil due to high winds. Minerals not deep in soil. Too dry for decay <25 in/year Temp rarely higher than 100C Permafrost layer Short growing season Bunch Grasses preserve water Animals migrate, hibernate or burrow in extreme temperatures and precipitation Sod plants that don’t fly away in wind Plants are leathery to resist losing water. Plants have oils to resist fires Animals change diets Human development Plants have spines and waxy cuticles Animals get water from food Animals burrow during the day Plants grow low to the ground and have shallow roots Animals have thick coats Few predators and little competition Human development Off-road recreational activities Overgrazing Unmanaged hunting Fragile biome Slow to recover from damage Oil drilling