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Bright blue marble floating in space. Ecology. Chapter 52. Earth’s biomes. Environmental factors. Abiotic factors non-living chemical & physical factors temperature light water nutrients Biotic factors living components animals plants. Marine. coral reef. benthos. intertidal.

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Environmental factors
Environmental factors

  • Abiotic factors

    • non-living chemical & physical factors

      • temperature

      • light

      • water

      • nutrients

  • Biotic factors

    • living components

      • animals

      • plants


Marine
Marine

coral reef

benthos

intertidal


Tropical rainforest
Tropical rainforest

distribution: equatorial

precipitation: very wet

temperature: always warm

characteristics: many plants & animals, thin soil


Savanna
Savanna

distribution: equatorial

precipitation: seasonal, dry season/wet season

temperature: always warm

characteristics: fire-adapted, drought tolerant plants; herbivores; fertile soil


Desert
Desert

distribution: 30°N & S latitude band

precipitation: almost

temperature: variable daily & seasonally, hot & cold

characteristics: sparse vegetation & animals, cacti, succulents, drought tolerant, reptiles, insects, rodents, birds


Temperate grassland
Temperate Grassland

distribution: mid-latitudes, mid-continents

precipitation: seasonal, dry season/wet season

temperature: cold winters/hot summers

characteristics: prairie grasses, fire-adapted, drought tolerant plants; many herbivores; deep, fertile soil


Temperate deciduous forest
Temperate Deciduous Forest

distribution: mid-latitude, northern hemisphere

precipitation: adequate, summer rains, winter snow

temperature: moderate warm summer/cool winter

characteristics: many mammals, insects, birds, etc.; deciduous trees; fertile soils


Coniferous forest taiga
Coniferous Forest (Taiga)

distribution: high-latitude, northern hemisphere

precipitation: adequate to dry (temperate rain forest on coast)

temperature: cool year round

characteristics: conifers; diverse mammals, birds, insects, etc.


Arctic tundra
Arctic Tundra

distribution: arctic, high-latitude, northern hemisphere

precipitation: dry

temperature: cold year round

characteristics: permafrost, lichens & mosses, migrating animals & resident herbivores


Alpine tundra
Alpine Tundra

distribution: high elevation at all latitudes

precipitation: dry

temperature: cold year round

characteristics: permafrost, lichens, mosses, grasses; migrating animals & resident herbivores


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