An investigation of rooting depth of the semiarid shrub Retama sphaerocarpa (L.) Boiss. by labelling of ground water with a chemical tracer

An investigation of rooting depth of the semiarid shrub Retama sphaerocarpa (L.) Boiss. by... 1. (1) Water containing lithium chloride as a chemical tracer was applied to the bottom of two survey wells 16 and 28 m deep and the concentration of Li + in young cladodes of Retama sphaerocarpa shrubs growing around the wells was monitored for 9 days after the subterranean application. 2. (2) The mean concentration of Li + in the young cladodes of the shrubs increased from a natural background of 1.8 ± 0.8 μg Li + g −1 dry mass to 91 ± 18 μg g −1 within 24 h of application. 3. (3) The mean concentration of Li + was significantly higher in shrubs around the shallower well where a maximum of 184 ± 52 μg g −1 was measured 5 days after application. 4. (4) At the deeper well, mean concentration of Li + averaged over the 9 day period of observation was positively correlated with shrub size. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Hydrology Elsevier

An investigation of rooting depth of the semiarid shrub Retama sphaerocarpa (L.) Boiss. by labelling of ground water with a chemical tracer

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Publisher
Elsevier
Copyright
Copyright © 1996 Elsevier Ltd
ISSN
0022-1694
eISSN
1879-2707
D.O.I.
10.1016/0022-1694(95)02794-7
Publisher site
See Article on Publisher Site

Abstract

1. (1) Water containing lithium chloride as a chemical tracer was applied to the bottom of two survey wells 16 and 28 m deep and the concentration of Li + in young cladodes of Retama sphaerocarpa shrubs growing around the wells was monitored for 9 days after the subterranean application. 2. (2) The mean concentration of Li + in the young cladodes of the shrubs increased from a natural background of 1.8 ± 0.8 μg Li + g −1 dry mass to 91 ± 18 μg g −1 within 24 h of application. 3. (3) The mean concentration of Li + was significantly higher in shrubs around the shallower well where a maximum of 184 ± 52 μg g −1 was measured 5 days after application. 4. (4) At the deeper well, mean concentration of Li + averaged over the 9 day period of observation was positively correlated with shrub size.

Journal

Journal of HydrologyElsevier

Published: Mar 15, 1996

References

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