| 释义 |
subˈlittoral, a. and n.
[sub- 11.]
A. adj. Lying near the sea-shore or just below the shore-line or littoral zone; spec. in Ecol., applied to the inshore biogeographic zone normally taken as extending from mean low tide to the edge of the continental shelf.
1846Smart Suppl. 1849Sk. Nat. Hist., Mammalia IV. 180 The sublittoral formation in which they had been originally deposited. 1849Darwin in Herschel Man. Sci. Enq. 177 Our observations..on the alluvial and sub-littoral deposits of these latitudes. 1897Geogr. Jrnl. Aug. 133, I should estimate that round the Pacific there are at least ten sub⁓littoral districts where earthquake-frequency may be about half that of Japan. 1909E. Warming Œcol. Plants iv. xli. 172 Sub-littoral ‘region’:—Ranges from below low-tide mark down to a depth of twenty fathoms (40 metres); here algae of all colours are represented. 1931[see profundal a. and n.]. 1937T. A. & A. Stephenson in Trans. R. Soc. S. Afr. XXIV. 360 It [sc. a particular zone of a beach] is occasionally exposed to a considerable extent, when maximal spring tides coincide with calm weather. This region we propose to call the Sublittoral Fringe. 1971Nature 9 Apr. 402/2 In the Mediterranean, Dardanus inhabits sandy bottoms with some exposed rocks..from sublittoral to moderate depths down to 100 m.
B. n. The sublittoral zone.
1961in Webster. 1964V. J. Chapman Coastal Vegetation i. 1 So far as algae are concerned, the sublittoral will extend downwards to the point where algae cease to grow. 1980Hiscock & Mitchell in J. H. Price et al. Shore Environment II. i. 333 The real downward extent of the sublittoral..is often ignored by field workers.
Hence subˈlittorally adv., in sublittoral regions.
1964Oceanogr. & Marine Biol. II. 260 Sublittorally, the distribution of the radioactivity on the sea bottom is not uniform. 1971Nature 9 Apr. 402/2 All are essentially warm temperate to tropical species occurring sublittorally in the Mediterranean, the Eastern and South Atlantic. |
