| 释义 |
microfauna Biol.|ˈmaɪkrəʊfɔːnə|
[f. micro- 1 + fauna.]
A fauna made up of minute animals, or one found in a microhabitat.
1902Geogr. Jrnl. X. 323 The average amount of Plankton (micro-fauna) contained in them [sc. mountain lakes] is only the tenth..part of that contained in the standing waters of..lowlands. 1910H. F. Osborn Age of Mammals iv. 254 Of the microfauna we first observe among the castroids that the genus Chalicomys replaces the Steneofiber of the Oligocene. 1924Bull. Amer. Assoc. Petroleum Geologists VIII. 549 All of the evidence at hand is studied and weighed in the light of intensive study of the micro⁓faunas of the Gulf Coast region. 1947Antiquity XXI. 190 Both diggers and sieve-men became very skilful at descrying even the smallest specimen... The sieve-men would pick out tiny bones of microfauna with amazing verve. 1957G. E. Hutchinson Treat. Limnol. I. xv. 817 This rise [sc. in soluble copper] may contribute to the disappearance of certain members of the microfauna and microflora from the lake. 1975Times 27 May 14/7 The upper part of those river-borne sediments [at Hoxne] contains a rich microfauna of small mammals, fishes and amphibia.
Hence microˈfaunal a.
1935Bull. Geol. Soc. Amer. XLVI. 498 The microfaunal evidence in the Wheeler Canyon section is not quite conclusive. 1964Oceanogr. & Marine Biol. II. 385 The species minimum at about 5{pmil} salinity..has also been found in more recent investigations on..various micro⁓faunal groups. 1972Times 11 Dec. 1/8 The microfaunal remains have shown that fishes, birds and crabs played almost as important a part in the diet of the population as that of cattle. 1973Nature 7 Dec. 347/1 Experiments introducing modern lichens into the normal preparation of microfaunal samples using hydrogen peroxide failed to mineralise the plant structures. |