单词 | periphyton |
释义 | periphytonn. Ecology. The organisms, collectively, that live on the surfaces of submerged plants and other objects in fresh water; spec. submerged microflora. ΚΠ 1931 Jrnl. Ecol. 19 260 It is..necessary to be on one's guard in ascribing all zonation merely to light effects. This is shown by Djakonoff's observations on the so-called periphyton on the Volga Steamers. 1961 R. C. Ball & F. F. Hooper in A. W. Klement & V. Schultz Radioecology iv. 218 Uptake of phosphorus-32 by periphyton was determined by suspending plexiglass plates..in the stream. 1991 R. S. K. Barnes & K. H. Mann Fund. Aquatic Ecol. (ed. 2) xii. 236/1 The fine-toothed radulae of snails can remove periphyton adhering closely to various surfaces. Derivatives periˈphytic adj. ΚΠ 1937 Ecology 18 454 The criterion of periphytic bacteria is their ability to attach themselves so tenaciously to the slide that they are not dislodged by washing. 1989 Nature 2 Nov. 57/2 Such a moderate depth..would be compatible with both the low percentages of periphytic forms and with the absence of lamination. This is a new entry (OED Third Edition, December 2005; most recently modified version published online March 2022). < |
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