| 释义 |
sulphuretum Ecol.|sʌlfəˈriːtəm|
Also (U.S.) sulf-. Pl. sulphureta, -tums.
[mod.L., f. sulphur n. + -etum.]
An ecological community of organisms, mainly consisting of sulphur bacteria, which metabolizes sulphur compounds in a closed subcycle of the larger environmental sulphur cycle.
1925L. G. M. Baas-Becking in Ann. Bot. XXXIX. 615 The natural ecological community of these [sulphur] bacteria is a miniature cycle in itself, and will be called a sulphuretum. 1967New Scientist 9 Nov. 333/2 One such ecosystem is known as the sulfuretum, based primarily on the sulphur bacteria and essentially anaerobic. Ibid., Palaeochemical evidence, based on fractionation of the sulphur isotopes, has shown that sulfureta were active at least 2 × 109 years ago. |