| 释义 |
seston Biol. and Oceanogr.|ˈsɛstən|
[a. G. seston (R. Kolkwitz 1912, in Ber. Deut. Bot. Ges. XXX. 341), ad. Gr. σηστόν, neut. of σηστός that which is filtered, f. σήθειν to strain, filter; cf. plankton.]
Fine particulate matter suspended in water, esp. that which is organic or living.
1916B. D. Jackson Gloss. Bot. Terms (ed. 3) 344/2 Seston, plankton material retained by very fine meshed sieves. 1941Ecol. Monogr. XI. 58/1 The varieties in sestonic phosphorus are correlated with both the mass of organic seston and the quantity of phytoplankton, as measured by its chlorophyll content. 1957G. E. Hutchinson Treat. Limnol. I. vi. 417 Seston color of this sort is often observed in highly productive lakes. 1967Ibid. II. xix. 235 The seston consists of bioseston, or plankton and nekton, which latter is ordinarily quantitatively negligible, and of abioseston or tripton. Ibid. 243 The entire mass of suspended matter in a volume of free water is called seston, the nonliving part, tripton. 1971New Scientist 15 July 145/2 The evidence suggests that the amount of chlorophyll from phytoplankton..is diminishing.., while the amount of seston (oxygen consumers) is increasing.
Hence seˈstonic a., of, pertaining to, or being seston.
1941[see above]. 1967Oceanogr. & Marine Biol. V. 221 At a glance these ribbons appeared to be sestonic debris from coastal algae of phanerogams. |