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Population dynamics of scleria tessellata a shade tolerant secondary successional species in slash and burn agriculture jhum fallows



Population dynamics of scleria tessellata a shade tolerant secondary successional species in slash and burn agriculture jhum fallows



Proceedings of the Indian National Science Academy Part B Biological Sciences 47(5): 768-773



S. tessellata Willd. is a sedge which grows in 5- to 20-yr-old secondary successional communities, developing after slash and burn agriculture (jhum) in the northeastern hill region of India. The survivorship and population flux of this species were studied in the jhum fallows. While the clone populations in all the fallows remained considerably stable throughout the study period, the shoot populations had high turnover rates. The vegetative vigor and the seed output by the clones increased with the increase in the fallow age. The seed output, in general, was very low, the reproductive strategy being directed towards vegetative regeneration.

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