Concept
Arctic upper abyssal
| URI | http://vocab.nerc.ac.uk/collection/M21/current/JNCCMNCR00002194/ | |
|---|---|---|
| Within Vocab | Marine Habitat Classification for Britain and Ireland Version 15.03 | |
| Alternative Labels | M.ArUA | |
| Definition | Arctic waters are much cooler than Atlantic waters (typically below 0°C). Within the UK, Arctic seabed habitats occur at depths greater than 600 m in the Faroe-Shetland Channel. The Arctic upper abyssal zone occurs below the Arctic lower bathyal. Communities found in this zone are described in child habitats.Biological zones are three-dimensional biogeographical regions which represent changes in biological community both spatially around the UK and vertically in relation to depth. Biological zones have some overlap in the types of community which can occur. The boundaries relate to areas of greatest change in overall species composition. The boundaries of zones are based on water mass structure which drives differences in biology. Rough boundaries of the zones have been predicted using modelled environmental data; a GIS proxy biogeographic zone layer can be downloaded from the Marine Habitat Classification download page. The depths of upper and lower boundaries depend on several variables, so the given depth range should be treated as a guide only. | |
| Date | 2022-04-27T16:54:15 | |
| Identifier | SDN:M21::JNCCMNCR00002194 | |
| Note | accepted | |
| Has Current Version | 2 | |
| Version | 1 | |
| version | 2 | |
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