Occurrence of Athiorhodaceae in Woodland, Swamp, and Pond Soils
作者:
Douglas C. Pratt,
Eville Gorham,
期刊:
Ecology
(WILEY Available online 1970)
卷期:
Volume 51,
issue 2
页码: 346-349
ISSN:0012-9658
年代: 1970
DOI:10.2307/1933678
出版商: Ecological Society of America
数据来源: WILEY
摘要:
Tests (by enrichment culture) for nonsulfur purple photosynthetic bacteria in surface soils showed them in all of three sediment cores sampled in a shallow pond and in all of six peats from nearby swamp hollows beneath cedar and tamarack. They also occurred in two of three peats from swamp flats and three of five peats from swamp hummocks. For woodland and grassland surface soils, proportions were three out of seven and five out of nine sites respectively. For the total number of tubes inoculated at varying dilutions from each of these sites, the following proportions of positives were recorded: uppermost lake sediments 92%, swamp hollows 67%, swamp flats 38%, swamp hummocks 20%, woodlands 14%, grasslands 8%.
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