Aphotic region
Aphotic region Aphotic region (Phytogeog.) A depth of water so great that only those organisms can exist that do not assimilate. [Webster 1913 Suppl.] ||

The Collaborative International Dictionary of English. 2000.

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  • aphotic region — /əˌfɒtɪk ˈridʒən/ (say uh.fotik reejuhn) noun a biogeographical region of deep water characterised by the absence of light, as in the depths of the ocean …   Australian English dictionary

  • aphotic region — noun : the lightless biogeographic region of deep water where organisms directly dependent on photosynthesis cannot exist …   Useful english dictionary

  • aphotic — /əˈfɒtɪk/ (say uh fotik) adjective 1. without light. 2. of or relating to a plant growing in the aphotic region. {a 6 + photic} …   Australian English dictionary

  • Nord'n'Commander — Стиль этой статьи неэнциклопедичен или нарушает нормы русского языка. Статью следует исправить согласно стилистическим правилам Википедии …   Википедия

  • Nord\'n\'Commander — Группа в 2007 Годы с 2001 по настоящее время …   Википедия

  • aphytal zone — (ˈ)ā|fid.əl noun Etymology: a (II) + Greek phyton plant + English al : aphotic region; especially : the plantless depths of a lake floor …   Useful english dictionary

  • marine ecosystem — Introduction       complex of living organisms in the ocean environment.       Marine waters cover two thirds of the surface of the Earth. In some places the ocean is deeper than Mount Everest is high; for example, the Mariana Trench and the… …   Universalium

  • Ocean — For other uses, see Ocean (disambiguation). Maps exhibiting the world s oceanic waters. A continuou …   Wikipedia

  • Deep sea communities — giant tubeworm Deep sea communities currently remain largely unexplored, due the technological and logististical challenges and expense involved in visiting these remote biomes. Because of the unique challenges (particularly the high barometric… …   Wikipedia

  • Benthic zone — The benthic zone is the ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and some sub surface layers. Organisms living in this zone are called benthos. They generally live in… …   Wikipedia

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