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| Web URL(s): | http://www.jstor.org/stable/pdf/2261632.pdf?acceptTC=true
Last checked: 10/06/2015
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| Publication Type:
| Refereed |
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| Author(s): | Mamolos, A. P.;
Elisseou, G. K.;
Veresoglou, D. S. |
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| Author Affiliation: | Aristotle University of Thessaloniki, Faculty of Agriculture, Laboratory of Ecology and Environmental Protection, GR-54006 Thessaloniki, Greece |
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| Title: | Depth of root activity of coexisting grassland species in relation to N and P additions, measured using nonradioactive tracers |
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| Source: | Journal of Ecology. Vol. 83, No. 4, August 1995, p. 643-652. |
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| Publishing Information: | Blackwell Scientific Publications |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Root depth; Tracer techniques; Grasslands; Nitrogen; Phosphorus; Soil moisture; Nutrient uptake; Agrostis tenuis
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| Abstract/Contents: | "1 Root activity of coexisting plant species was assessed by injecting lithium, strontium and caesium at depths of 5 and 15 cm in the soil of an upland grassland to which a factorial combination of N and P additions had been applied. 2 For each species and each tracer the ratio of the above-ground concentrations after injection at depths of 5 and 15 cm was calculated and the species ranked for each tracer in order of root activity with soil depth; Sr and Cs gave similar results, which in some cases were quite different from those with Li. 3 When Cs and Sr were injected at the depth of 5 cm, a positive correlation was evident between Sr and Ca concentrations for the various species but not for Cs and K. 4 Although root activity was higher at a depth of 5 cm for all species, the relative activity with depth differed between species; Agrostis capillaris, the most abundant species, and Thymus sibthorpii had deeper root activity than Carex caryophyllea, the second most abundant species, and Teucrium chamaedrys. 5 When N and/or P were added Agrostis capillaris and Carex caryophyllea tended to become shallower rooted and their above-ground biomass increased; for these species a positive correlation was evident between relative abundance and ratios of concentrations, indicating that the most competitive species tended to become shallower rooted when the limiting nutrients were added. 6 Ranking of species in root activity with depth differed among the various nutrient treatments. Legumes tended to have the deepest root activity when N only was applied and the shallowest root activity when P was applied. 7 Although the ranking of species was influenced by the availability of nutrients, the hypothesis that the less competitive species are forced to deeper rooting was not clearly supported; the legume species Trifolium heldreichianum only tended to become deeper rooted when N was added, i.e. in the treatment in which it was less competitive." |
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| Language: | English |
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| References: | 39 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mamolos, A. P., G. K. Elisseou, and D. S. Veresoglou. 1995. Depth of root activity of coexisting grassland species in relation to N and P additions, measured using nonradioactive tracers. J. Ecol. 83(4):p. 643-652. |
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| Web URL(s):
http://www.jstor.org/stable/pdf/2261632.pdf?acceptTC=true
Last checked: 10/06/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QH 540 .J6 |
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