Abstract
The present study includes an evaluation of the effect of protection of a grazing ecosystem on the nutrient concentration and uptake in the organs of four annual species of non-saline depressions in the western Mediterranean regionof Egypt.
The concentration of macro- and micronutrients in different organs became lower due to the increase in biomass of individuals with protection. The maximum uptake of nutrients occurred during the early vegetative stage, except for a few cases in which the uptake in some species reached two peaks, one in the early vegetative stage and the other in the reproductive stage.
The efficiency of the selected annual species in uptaking and accumulating nutrients was compared with rates of uptake of nutrients and amounts of nutrients accumulated in tissues of two species representing other life forms. The annuals and perennial herbs (ephemeroids) are in general more efficient in uptaking and accumulating nutrients in their tissues than perennial shrubs.
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References
Abdel-Razik, M. S. 1980. A study on productivity and nutrient turn-over of some common plant species in the western Mediterranean desert of northern Egypt. Ph.D. Thesis, University of Alexandria, Alexandria, Egypt.
Allen, S., Grimsbay, H. M., Parkinson, J. A & Quarmby, C. 1974. Chemical analysis of ecological materials. Blackwell Scientific Publications, London.
Ayyad, M. A. 1978. A preliminary assessment of the effect of protection on the vegetation of the Mediterranean desert ecosystems. Täeckolmia 9: 85–101.
Chapman, S. B., 1976. Methods in plant ecology. Blackwell Scientific Publications, Oxford.
Clarkson, D. T. 1980. The mineral nutrition of higher plants. Annual Review of Plant Physiology 31: 239–98.
El-Kady, H. F. 1980. Effect of grazing pressures and certain ecological parameters on some fodder plants of the Mediterranean coast of Egypt. M.Sc. Thesis, University of Tanta, Tanta, Egypt.
Gorsline, G. W., Thomas, W. I. & Baker, D. E. 1963. Inheritance of P, K, Mg, Cu, B. Zn, Mn, and Fe concentrations by vorn (Zea mays L.) leaves and grains. Series of the Pennsylvania Agricultural Experiment Station. The Pennsylvania State University, Soil Testing Laboratory.
Millar, C. E., Turk, L. M. & Foth, H. O. 1965. Fundamentals of soil science, John Wiley & Sons, Inc. New York, London.
Täckholm, V. 1974. Student's Flora of Egypt. Cairo University Press, Cairo.
UNESCO (MAB) 1977. Development of arid and semi-arid land. Obstacles and prospects. Technical note, 6.
Woodmansee, R. G. & Duncan, D. A. 1980. Nitrogen and phosphorus dynamics and budgets in annual grasslands. Ecology 61: 893–904.
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El-Ghareeb, R., Ayyad, M.A. & Gaballah, M.S. Effect of protection on the nutrient concentration and uptake of some Mediterranean desert annuals. Vegetatio 96, 113–125 (1991). https://doi.org/10.1007/BF00044973
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DOI: https://doi.org/10.1007/BF00044973