Habitat types key navigation

You can use the 'key navigation' function to identify a specific habitat by answering a set of questions. Starting from first question to next questions you select one of the possible answers. Here are samples of possible answers:

• No ( 002 ) - Leading to question named '002'
• Yes [ G ] - Leading to another questions subset of level G
• No [ E6 ] - Links directly to factsheet for E6

Additionally the diagram may be used for reference.


Category : (A5 )Sublittoral sediment
Diagram :

Question a27 :   Seepage?

Sublittoral habitats characterised by the presence of gases or liquids bubbling or seeping through sediments are distinguished (path = Yes).

Answers: Yes [ A5.7 ] No ( a28 )

Question a28 :   Organically enriched or anoxic conditions?

Sublittoral sediments which are organically-enriched or permanently or periodically anoxic are separated (path = Yes).

Answers: Yes [ A5.7 ] No ( a29 )

Question a29 :   Macrophyte-dominated?

Habitats dominated by aquatic angiosperm or algal macrophytes (path = Yes) are distinguished from those dominated by animal communities, with or without algae.

Answers: Yes [ A5.5 ] No ( a30 )

Question a30 :   Substrate

Habitats are divided on the basis of the dominating particle size of the substrate. Gravel or coarse sand > 1 mm grain size (including shingle and mobile cobbles); fine sand or muddy sand <= 1 mm with <=30% silt (less than 0.063 mm grain size); mud >30% less than 0.063 mm grain size; combination of substrates - veneers or intimate mixtures of mobile substrates with different particle size; or biogenic structures on sediment. Note that sublittoral mosaics of mobile and non-mobile substrates are considered as complex X32 or X33 comprising units from A5 and A3 and/or A4.

Answers: gravel or coarse sand [ A5.1 ] fine sand or muddy sand [ A5.2 ] mud [ A5.3 ] combination of substrates [ A5.4 ] biogenic [ A5.6 ]