Ecosystems Ch.21. (21-1) Terrestrial Biomes Biomes: large terrestrial ecosystems that contain...
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Transcript of Ecosystems Ch.21. (21-1) Terrestrial Biomes Biomes: large terrestrial ecosystems that contain...
Ecosystems
Ch.21
(21-1) Terrestrial Biomes
• Biomes: large terrestrial ecosystems that contain smaller ecosystems w/in them
• 7 major biomes
7 Major Biomes
Tundra
• Very cold
• Little precipitation
• Permafrost– Nutrient poor soil
• Plants: mosses, no big trees
• Animals: caribou, snowy owls, arctic foxes
Taiga
• Cold
• Little precipitation
• Nutrient poor soil
• Plants: evergreen trees – Needles
• Animals: moose, bears, wolves– Hibernation
Temperate Deciduous Forest
• Temperate weather
• Avg. precipitation
• Moderate soil nutrients
• Plants: leaf trees
• Animals: deer, raccoons, squirrels
Temperate Grassland (Prairie)
• Temperate weather
• Avg. precipitation
• Nutrient rich soil (topsoil)
• Plants: tall dense grasses
• Animals: bison (grazing)
• Endangered biome– Farming
Desert
• Cold or hot
• Little precipitation
• Dry, sandy, nutrient poor soil
• Plants: cacti (conserve water)
• Animals: lizards, snakes
Savanna (Chaparral)
• Moderate temp.’s
• Wet season & dry season
• Nutrient poor soil
• Plants: tall grasses
• Animals: zebras, giraffes, leopards
Tropical Rain Forest
• Warm temp.’s
• High precipitation
• Nutrient poor soil
• Plants: leafy trees– Canopy (little light to ground)
• Animals: parrots, monkeys, snakes– Most world’s species