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Published byΣίβύλλα Ρέντης Modified over 6 years ago
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Ecosystems on Land To me every hour of the light and dark is a miracle, every cubic inch of space is a miracle, every square yard of the surface of the Earth is spread with the same. - Walt Whitman
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Organization of the Environment
The biosphere is the part of the Earth that supports life. Scattered throughout the biosphere is a wide range of habitats– dry deserts, lush rainforests, even dark caves. Each of these areas, called biomes, has its own unique geography and climate.
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What is a Biome? Biome – group of ecosystems that share similar abiotic and biotic factors Share a primary climate Have plants and animals with similar adaptations
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Climate vs. Weather Climate – the average conditions over long periods in a given area Includes temperature and precipitation Climatograph – pictorial representation of an area’s climate Weather – the day-to-day conditions in Earth’s atmosphere “Sunny and humid” or “partly cloudy and cold” are examples of weather statements
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Climatographs A climatograph is a combination precipitation and temperature graph for a given biome. The average monthly precipitation for the area is displayed as a bar graph. The average monthly temperature is displayed as a line graph.
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Abiotic Influences of an Ecosystem
The two most significant abiotic factors that influence life in a biome are temperature and precipitation.
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As the latitude, or distance away from the equator, increases, average temperature tends to decrease.
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Latitude is measured in degrees north or south of the equator.
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As the altitude, or elevation from sea level increases, average temperatures decrease.
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Biomes and Organisms The same biome tends to have the same organisms living in it – regardless of location on Earth This is the result of natural selection – the same types of organisms are likely to adapt to similar climate conditions
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