System Glossary
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Definition of Term

(English) The base on which an organism lives; sea bed or lake bed, or other solid surface to which animals or plants attach, or on which they move; the substance forming the bottom of the sea or ocean floor; general term for any benthic habitat. Bottom or bottom materials: large boulders (>1024 mm), small boulders (256-1024 mm), stone (256-600 mm), rubble or large cobble (128-256 mm), cobble or small cobble (64-128 mm), pebble (2-64 mm), coarse gravel (32-64 mm), fine gravel (2-32 mm), sand (0.062-2.0 mm), silt (0.004-0.062) and clay (<0.004). (See also: sessile, Aufwuchs, periphyton)
(French) Base où s’habite un organisme ; le fond de la mer ou le fond du lac, ou autre surface solide auquel les animaux ou les plantes s'attachent, ou sur laquelle ils se déplacent ; la substance qui forme le fond de la mer ou le sol de l'océan ; terme général pour tout habitat benthique. (See also: sessile, Aufwuchs, periphyton)
(Portuguese) A base na qual um organismo vive; leito do mar ou dum rio ou qualquer outra superfície sólida à qual se fixam ou movimentam animais ou plantas; a substância que forma o fundo do mar. (See also: sessile, Aufwuchs, periphyton)

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