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"A biogenic structure is formed when reef-forming species, such as cold water corals, attach to any hard substrate present and grow over the surrounding area forming a secondary substrate over the top. This changes the composition of the associated community as it provides a stable surface for epifauna to attach. Biogenic structure includes only areas where the seafloor is completely covered, not isolated structures, such as sponge aggregations or discrete corals."  
The EUNIS classification refers to "biogenic habitat" but the EMODnet Seabed Habitats agreed to "refer to "biogenic substrate" to highlight that this is specifically about substrate-modifying features."  


Source:  
"Biogenic substrate strictly refers to beds or reefs of a species that meet similar criteria to Mediterranean Posidonia oceanica meadows" (seagrass meadows) meaning that they:  


JNCC (2015). "The Marine Habitat Classification for Britain and Ireland Version 15.03". Retrieved from: [https://mhc.jncc.gov.uk/biotopes/jnccmncr00002225 https://mhc.jncc.gov.uk], accessed on 2022-02-17. 
* Cover and replace the underlying substrate as a structuring factor, so that the underlying substrate cannot always be detected


[[Sediments#tab=North Sea|Go back to sediments]]
* Can occur on different substrate types, so that the underlying substrate is difficult to infer 
* Are detectable using acoustic survey techniques, so that they are typically mapped in the same way as other substrate types
 
'''Source:'''
 
Lillis H., Allen H., Agnesi S., Annunziatellis A., Vasquez M. (2021). "A combined, harmonized data product showing the best evidence for the extent of biogenic substrate in Europe". Retrieved from: [https://www.emodnet-seabedhabitats.eu/media/1856/d306_biogenic-substrate-report_simplified.pdf www.emodnet-seabedhabitats.eu], accessed on 2022-03-15.   
 
 
[[Sediments#tab=North Sea|'''Go back to sediments''']]

Latest revision as of 12:08, 15 March 2022

The EUNIS classification refers to "biogenic habitat" but the EMODnet Seabed Habitats agreed to "refer to "biogenic substrate" to highlight that this is specifically about substrate-modifying features."

"Biogenic substrate strictly refers to beds or reefs of a species that meet similar criteria to Mediterranean Posidonia oceanica meadows" (seagrass meadows) meaning that they:

  • Cover and replace the underlying substrate as a structuring factor, so that the underlying substrate cannot always be detected
  • Can occur on different substrate types, so that the underlying substrate is difficult to infer
  • Are detectable using acoustic survey techniques, so that they are typically mapped in the same way as other substrate types

Source:

Lillis H., Allen H., Agnesi S., Annunziatellis A., Vasquez M. (2021). "A combined, harmonized data product showing the best evidence for the extent of biogenic substrate in Europe". Retrieved from: www.emodnet-seabedhabitats.eu, accessed on 2022-03-15.


Go back to sediments

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This page was last edited on 15 March 2022, at 12:08. Content is available under GPLv3 unless otherwise noted.