Life: The Science of Biology, 10e - WH Freeman
Life: The Science of Biology, 10e - WH Freeman
Life: The Science of Biology, 10e - WH Freeman
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Chapter 54 | Ecology and the Distribution <strong>of</strong> <strong>Life</strong> 9TUNDRAArctic tundra isfound at highlatitudes.Alpine tundrais found at highelevations.EquatorAlpine tundra: Giant groundsel (Dendrosenecio keniensis) on theslopes <strong>of</strong> Mt. Kilimanjaro, TanzaniaArctic tundra: Caribou (Rangifer tarandus)in Denali National Park, AlaskaCommunity compositionDominant plantsPerennial herbs and small shrubsSpecies richnessPlants: Low; higher in tropical alpineAnimals: Low; many birds migrate in forsummer; a few species <strong>of</strong> insectsabundant in summerSoil biotaFew species20°C is a“comfortable”68°F.0°C is thefreezing point<strong>of</strong> water(=32°F).Temperature°CUpernavik, Greenland 73°N20151050–5–10–15–20–25JanWinter isvery coldand long.5 cm equalsjust over 2inches.Summer is cooland short.Range 28°CJulPrecipitationcm5 Annual total: 23 cm0JanJulDecDec<strong>The</strong> feathery feet and white plumage <strong>of</strong> thewillow ptarmigan (Lagopus lagopus) areadaptations to the snows <strong>of</strong> the Arctic tundrain Manitoba.(Page 1128)LIFE <strong>The</strong> <strong>Science</strong> <strong>of</strong> <strong>Biology</strong> 10E SadavaSinauer AssociatesMorales StudioFigure 54.Biome 1 Date 07-13-12© 2014 Sinauer Associates, Inc.
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