Lecture4Biomes - Climate controls distribution of organisms...

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Unformatted text preview: Climate controls distribution of organisms at global scale Biome Biome a major regional terrestrial community with its own type of climate, vegetation, and animal life Ecotone boundary between two biomes Whittaker Diagram-found near the equator-temperature varies little from approximately 23C -the length of daylight varies from 12 hours by less than one hour-rainforest>2000mm Tropical Rain Forest Walter climate diagram Tropical Rain Forest-canopy trees up to 55 m tall-soils are generally unfertile (highly weathered)-nutrients and carbon stored in plant biomass, not soils Tropical Savanna/Seasonal Forest-found in the tropics (but > 10 latitude)-pronounced dry season with <5 cm rainfall in some months Tropical Savanna/Seasonal Forest Tropical Savanna/Seasonal Forest-scattered trees and grass-tropical biome (rainforest plus seasonal forest) is largest biome based on land area-fire & grazing by animals also contribute to predominance of grasses Tropical Savanna/Seasonal Forest-distinct winter season,...
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This note was uploaded on 08/23/2011 for the course PCB 4043 taught by Professor Osenberg during the Spring '10 term at University of Florida.

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Lecture4Biomes - Climate controls distribution of organisms...

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