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Bedrock: Any stable hard substratum, not separated into boulders or smaller sediment units. Includes soft rock-types such as chalk, peat and clay. (Hiscock et al., 1999; MarLIN)
- Hiscock, K., Jackson, A. and Lear, D. (1999). Assessing seabed species and ecosystem sensitivities: existing approaches and development, October 1999 edition.Report to the Department of Environment, Transport and the Regions from the Marine Life Information Network (MarLIN). Marine Biological Association of the United Kingdom, Plymouth.