期刊
JOURNAL OF EUKARYOTIC MICROBIOLOGY
卷 48, 期 4, 页码 475-479出版社
SOC PROTOZOOLOGISTS
DOI: 10.1111/j.1550-7408.2001.tb00182.x
关键词
food webs; microbial ecology; protozoan ecology; protozoan enumeration; terrestrial gymnamoebae
类别
The abundance and diversity of gymnamoebae in three subsoils varying in compaction and water retention along a 1.2 m transect were documented as the local climatic conditions changed from late summer 1999 through mid-summer 2000. The mean density of gymnamoebae for the loose soil (1,655/g) was greater than either the most compact 11,468/g) or moderately compact soil (851/g). Minimum densities occurred in middle and late summer for all soils while significant (F = 38.803. less than or equal to 0.0002) density peaks at 3.212/g occurred in early summer in the must compact soil, 2.928/g in the least compact. and 2,209/g in the moderately compact soil. Limax non-eruptive gymnamoebae (mt 2) correlated (r = 0.49, p less than or equal to 0.016) with moisture while eruptive limax gymnamoebae ( nt 3) correlated with temperature (r = 0.07, p less than or equal to 0.024), moisture (r = 0.58, p less than or equal to 0.001) and precipitation (r = 0.46. p less than or equal to 0.029). Flattened or discoid amoebae (mt 4) dominated throughout most of the survey, and the two limax groups showed inverse relationships. Chi-square analyses showed significant differences in the numbers of limax eruptive gymnamoebae compared to all other morphotypes on all but one sampling period.
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