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Terrestrial (Land) Biomes Biome Biome Description Plants Animals Tundra Characterized by very dry cold winters. Temperatures can get below -30°C. Ground is permanently frozen (permafrost) below the surface. Summers and growing seasons are cool and short. About 50cm precipitation a year. Nutrient poor soil since the process of decay is slow. Locations: Arctic and Antarctic regions and at tops of high mountains. Examples: Low shrubs, mosses, liverworts, hardy grasses. Adaptations: Plants are short in response to sheering wind forces and others grow in clumps in order to break harsh winds and protect each other from the cold. Plants have shallow roots to absorb water quickly. Examples: Polar bear, artic fox, caribou, grey wolves, reindeer. Adaptations: Extra body fat. Thick insulating cover of feathers or fur. Some animals migrate or hibernate. Others have adapted by preventing their bodily fluids from freezing solid by having built in antifreeze agents or super-cooling methods. Use camouflage to protect themselves, ex: brown fur in summer & white fur in winter. Tropical Rainforest Temperature is warm to hot year round. Precipitation is high (460700cm annually). It is earth’s most densely populated biome and home to more species than all the other biomes combined. There is a very distinct layering of plants: emergent, canopy, understory, & forest floor. Sunlight is a major limiting factor. Locations: Found in all parts of the world, in areas near the equator. Examples: Vines, ferns, palms, also bamboo, banana trees, rubber trees, and cassava. Adaptations: Some plants have aerial roots and live their entire life high up in tree tops. Generally have large leaves to catch as much sunlight as possible. Some plants produce an odor similar to rotting flesh which attracts pollinating insects. Examples: Anteater, jaguar, brocket deer, lemur, orangutan, marmoset, macaw, parrot, sloth, and toucan. Adaptations: Animals may have bright colors to attract mates. Camouflage hides insects and amphibians from predators. Animals are able to climb and forage for food in trees, such as monkeys and sloths. Birds have strong or longer beaks, such as toucans & macaws. Examples: Oak, beech, ash, and maple trees. Adaptations: Roots are expansive, deep and long. Fertile soil supports large plants and trees with woody stems. Autumn temperatures signal trees to cut off the water supply to leaves making them less vulnerable to damage by winter’s cold. Examples: Deer, fox, eagle, bear, squirrel, wood mice, rabbits, raccoons, woodpeckers, cardinals, and finches. Adaptations: Many migrate to warmer places to escape the cold winters, others hibernate through winter when food is scarce. Some animals such as squirrels chipmunks and jays store food using hallows of trees as storehouses for nuts and seeds. Temperate Deciduous Summers are hot and winters are cold. Forest Precipitation is 50-150cm a year. Soil is fertile. Cold winters halt plant growth for several months. Growing season averages six months. There are four seasons in this month. Locations: Mid-latitudes of North America, Europe, Asia, South America, Africa, & Australia. Biome Biome Description Plants Animals Taiga (Coniferous) Forest Cold year round. Temperatures range between -30°C - 20°C. Little precipitation (35 – 75 cm) Short growing season. Locations: Located south of the Arctic tundra. It stretches from Alaska straight across North America to the Atlantic Ocean and across Eurasia. Examples: Moose, the red fox, the snowshoe rabbit, and birds such as the crossbill and the great horned owl. Adaptations: Store extra fat layers on their bodies to keep warm. Some animals hibernate. Others live beneath the snow in tunnels. Many use camouflage to protect themselves or to catch their prey. Ex: brown fur in summer & white fur in winter. Desert Less than 25cm of rain per year. Area is dry most of the time. Extreme temperature changes during the course of the day. Very hot during the summer and mild in winter. Locations: Africa, Asia, the Middle East, North and South America and Australia Examples: Cone-bearing trees such as spruce, hemlock, and fir. Adaptations: Dark green needles allow more sunlight & heat to be absorbed. Leaves remain green during winter so photosynthesis can occur year round. Needle-leaf trees are drought resistance and prevent snow from collecting on them, which may cause the branches to break. Examples: Cacti such as yucca, aloe, ocotillo, plants, the tall saguaro, stinging nettles, creosote bushes, Joshua trees, variety of short-season wildflowers. Adaptations: Leaves are modified (thorny) so animals do not eat them. Some have knife-like leaves that prevent water loss. Many cacti store large amounts of water in their thick stems and pulpy interior. Grassland (Savanna) Fertile soil. Precipitation is moderate – 60 – 90cm per year. Soils are rich in both minerals and organic matter. Water is usually found just below the soil surface. Locations: Central Asia, North America, Australia, central Europe, and South America. 1. Examples: Variety of grass, sunflowers, clovers, and a variety of annual wildflowers. Adaptations: Adapted to cold, temperatures, drought, and fires. Grasses have extensive root webs that prevent grazing animals from pulling their roots out of the ground. Seeds are narrow with sharp pointed edges that stick to large grazing animals Examples: Mammals, insects, birds, reptiles including lizards, snakes, owls, camels, and antelope. Adaptations: Hard outer coverings such as keratinous scales in snakes help reduce water loss. Thin large ears with dense surface capillaries aid in heat loss. To prevent overheating both reptiles and amphibians make burrows to escape heat. During the hottest, driest times of the year, some animals estivate (similar to hibernation but they are avoiding the heat). Some animals do not have sweat glands & pass small amounts of concentrated urine. Examples: Bison, rabbits prairie dogs, coyotes mule deer, badgers, rhinoceros, zebras, giraffe, antelope. Adaptations: Sharp teeth that are able to gnaw through grasses. Small animals can hide in grasses. Large animals protect themselves with speed or camouflage. Others live in large groups called herds to protect themselves from predators and to protect the weaker members.