期刊
PEDOBIOLOGIA
卷 52, 期 6, 页码 351-360出版社
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.pedobi.2008.12.002
关键词
Salinity; Collembola; Enchytraeid; Earthworm; Soil
资金
- National Research Foundation of South Africa
We studied the effect of salinity on some life-cycle parameters in the collembolan Folsomia candida, the enchytraeid Enchytraeus doerjesi, and two earthworm species, Eisenia fetida and Aporrectodea caliginosa, using natural saline soil from Robertson, Western Cape, South Africa. Specimens of the four species were exposed to soils along a gradient of salinity with electrical conductivity (EC) ranging from 0.08 to 1.62 dS m(-1), under controlled laboratory conditions for 28 days. The results showed that although survival of E. doerjesi and F candida was not significantly affected in this salinity range, juvenile production was significantly affected at 1.03 dS m(-1) and higher. For E. doerjesi, absolute cessation of reproduction occurred at 1.31 dS m(-1) white for F candida, it occurred at a higher EC of 1.62 dS m(-1). For E. fetida and A. caliginosa, survival was significantly affected at and above 0.92 and 1.31 dS m(-1), respectively, white total mortality occurred at 1.31 and 1.62 dS m(-1), respectively. Both earthworm species only produced cocoons in control soils. Growth of A. caliginosa was significantly affected at a tower EC (0.52 dS m(-1)) than that which affected the growth of E. fetida (1.03 dS m(-1)). Thus, the sensitivity of these soil organisms to saline stress, based on survivat and reproduction data increased in the order: F candida
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据
© Peeref 2019-2024. All rights reserved.