bioturbation

[ bahy-oh-tur-bey-shuhn ]
/ ˌbaɪ oʊ tɜrˈbeɪ ʃən /

noun

the alteration and disturbance of a site by living organisms; the turning and mixing of sediments by organisms, as rodents.

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Scientific definitions for bioturbation

bioturbation
[ bī′ō-tər-bāshən ]

The stirring or mixing of sediment or soil by organisms, especially by burrowing, boring, or ingestion.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.