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Stop! Don'T Step on That Soil. It's Full of Life

By Environmental Protection Agency

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Book Id: WPLBN0000207042
Format Type: PDF eBook
File Size: 0.3 MB
Reproduction Date: 2007
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Title: Stop! Don'T Step on That Soil. It's Full of Life  
Author: Environmental Protection Agency
Volume:
Language: English
Subject: Ecology, Natural resource issues, Environemtal protection
Collections: Environmental Awareness Library Collection
Historic
Publication Date:
Publisher: United States Environmental Protection Agency

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Agency, E. P. (n.d.). Stop! Don'T Step on That Soil. It's Full of Life. Retrieved from http://hawaiilibrary.net/


Description
Excerpt: Although the soil surface may look like dirt to you, it is full of living organisms that are a vital part of desert ecosystems. This veneer of life is called a biological soil crust. These crusts are found throughout the world, from hot deserts to polar regions. Crusts generally cover all soil spaces not occupied by green plants. In many areas, they comprise over 70% of the living ground cover and are key in reducing erosion, increasing water retention, and increasing soil fertility. In most dry regions, these crusts are dominated by cyanobacteria (previously called blue-green algae), which are one of the oldest known life forms. Communities of soil crusts also include lichens, mosses, microfungi, bacteria, and green algae.

 

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