| 词汇 | allochthonous |
| 释义 | BETA Examples of allochthonousallochthonous isn’t in the Cambridge Dictionary yet. You can help! This allochthonous tillite is no less indicative of contemporary glaciation. The calcarenites contain an allochthonous fauna that includes rugose corals, crinoids and brachiopods. However, as we are dealing with allochthonous macrofloras, much of this small-scale variation will be lost anyway through mixing during transportation. The map shows the distribution of allochthonous and autochthonous units, as well as the localities mentioned in this paper. The coals are not associated with palaeosols and may be allochthonous. Problems, practical and psychological, using stable carbon isotope ratios for discerning utilization of allochthonous detritus by stream fauna: a tale of two studies. The rounded edges, rather small size, and general lack of internal cellular structure suggest an allochthonous origin and transport over a relatively long distance. This size range suggests the fossils are allochthonous plant fragments and not the remains of the local vegetation. Previous studies have proposed that there are two populations in the chert : allochthonous cyanobacteria and possible microalgae, and benthic non-photosynthetic bacteria. The evidence to date suggests that indigenous, psychrotolerant, fuel-degrading microflora have advantages over allochthonous micro-organisms. If the coals were autochthonous, then their high sulphur content might have been significant, but the evidence suggests they were allochthonous. The aerobic ostracod assemblages may be allochthonous. Ocypodid (fiddler) crabs are ideal subject organisms in which to measure the relative importance of allochthonous and autochthonous dietary contributions. In limnology, allochthonous sources of carbon or nutrients come from outside the aquatic system (such as plant and soil material). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In streams and small lakes, allochthonous sources of carbon are dominant while in large lakes and the ocean, autochthonous sources dominate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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