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Competitive Interactions Between the Perennial Shrub Ziziphus ummularia and an Annual Herb Rhynchosia minima

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Author(s): S. Shahid Shaukat | Imran Ali Siddiqui | Zarina Ali | Maria Hamid

Journal: Pakistan Journal of Biological Sciences
ISSN 1028-8880

Volume: 6;
Issue: 9;
Start page: 854;
Date: 2003;
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Keywords: Interspecific competition | intraspecific competition | reproductive potential | desert region

ABSTRACT
The investigation focuses on competitive interactions between individuals of the perennial shrub Ziziphus nummularia and the annual herb Rhychosia minima with the aid of nearest-neighbour analysis in a sub-tropical desert region. Both intraspecific and interspecific competitive interactions were detected between nearest-neighbouring pairs. The cover as well as reproductive potential of R. minima were significantly reduced when it established in the close vicinity of Z. nummularia.
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