sestonn.

/ˈsɛstən/

Etymology: < German seston (R. Kolkwitz 1912, in Ber. Deut. Bot. Ges. XXX. 341), < Greek σηστόν , neuter of σηστός that which is filtered, < σήθειν to strain, filter; compare plankton n.

Biology and Oceanography.

Fine particulate matter suspended in water, esp. that which is organic or living.

ΚΠ

1916 B. D. Jackson Gloss. Bot. Terms (ed. 3) 344/2 Seston, plankton material retained by very fine meshed sieves.

1941 Ecol. 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.

1957 G. E. Hutchinson Treat. Limnol. I. vi. 417 Seston color of this sort is often observed in highly productive lakes.

1967 G. E. Hutchinson Treat. Limnol. II. xix. 235 The seston consists of bioseston, or plankton and nekton, which latter is ordinarily quantitatively negligible, and of abioseston or tripton.

1967 G. E. Hutchinson Treat. Limnol. II. xix. 243 The entire mass of suspended matter in a volume of free water is called seston, the nonliving part, tripton.

1971 New 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.

Derivatives

seˈstonic adj. of, pertaining to, or being seston.

ΚΠ

1941 [see main sense].

1967 Oceanogr. & Marine Biol. 5 221 At a glance these ribbons appeared to be sestonic debris from coastal algae of phanerogams.

This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).

单词	seston
释义	sestonn. /ˈsɛstən/ Etymology: < German seston (R. Kolkwitz 1912, in Ber. Deut. Bot. Ges. XXX. 341), < Greek σηστόν , neuter of σηστός that which is filtered, < σήθειν to strain, filter; compare plankton n. Biology and Oceanography. Fine particulate matter suspended in water, esp. that which is organic or living. ΚΠ 1916 B. D. Jackson Gloss. Bot. Terms (ed. 3) 344/2 Seston, plankton material retained by very fine meshed sieves. 1941 Ecol. 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. 1957 G. E. Hutchinson Treat. Limnol. I. vi. 417 Seston color of this sort is often observed in highly productive lakes. 1967 G. E. Hutchinson Treat. Limnol. II. xix. 235 The seston consists of bioseston, or plankton and nekton, which latter is ordinarily quantitatively negligible, and of abioseston or tripton. 1967 G. E. Hutchinson Treat. Limnol. II. xix. 243 The entire mass of suspended matter in a volume of free water is called seston, the nonliving part, tripton. 1971 New 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. Derivatives seˈstonic adj. of, pertaining to, or being seston. ΚΠ 1941 [see main sense]. 1967 Oceanogr. & Marine Biol. 5 221 At a glance these ribbons appeared to be sestonic debris from coastal algae of phanerogams. This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018). < n.1916
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