| 释义 |
aphotic, a.|əˈfəʊtɪk|
[f. a- prefix 14 + photic a.]
Not reached by sunlight (cf. photic a.).
1903W. R. Fisher tr. Schimper's Plant-Geogr. iii. v. i. 782 The aphotic or dark region, in which only non-assimilating organisms can exist. 1913J. Murray Ocean vii. 137 The Aphotic or Deep-Sea Zone extends from the lower limit of the photic zone down to the bottom of the greatest ‘deeps’. 1928E. Neaverson Stratigraph. Palaeontol. iv. 97 Two general light-regions recognised by oceanographers are based on the distribution of plants: the photic region..and the aphotic region, where the light is insufficient for this process [sc. photosynthesis] to be carried on. |