Biogenic reefs of Europe and temporal variability

European-scale distribution of biogenic reefs

Figure 1: Map taken from the OSPAR Status Report 2010 depicting the distribution of the threatened and/or declining coastal and shelf habitats in Europe.

Biogenic reefs can be described as hard compact structures created by the activity of living organisms. They do not share a uniform structure and are found at variable spatial scales. Dense colonies of several species are widely considered to be reef in Europe. Only four of these species are described in this report due to their contribution to sediment entrainment, bed stability and potential wave energy attenuation, these are: Sabellaria alveolata, Sabellaria spinulosa, Modiolus modiolus and Mytilus edulis. Many biogenic reef habitats are currently threatened and/or are in decline in Europe as a result of various natural and anthropogenic pressures (OSPAR 2010). Figure 1 illustrates the distribution of some biogenic reef habitats which are currently in decline around the coast of Europe.

Sabellaria spinulosa

Examples

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