• Growth strategies of early and late successional shrubs from a subtropical moist forest under two light regimes

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/plnt/099/04/0343-0351

    • Keywords

       

      Allocation strategies; succession; tropical forest; light adaptation of shrubs

    • Abstract

       

      Two early successional shrubsMallotus indica Muell. andClerodendron infortunatum Gaertn. and two late successional shrubs,Litsea khasiana Meissn. andCombretum flagrocarpum Herb. were studied under both open and shade environments. The early successional species had greater dry weight allocation to the stem and leaf components and lesser allocation to the root component. Thus the early successional species had an exploitative strategy for effective light capture and utilization of nutrient enriched surface soil after clear-cutting of a forest. On the other hand, the late successional shrubs showed a reverse pattern in allocation. This was related for their survival and to make adequate growth in a competitive environment. These differential strategies of the two categories of shrubs was also reflected in the lower nutrient uptake efficiency and higher use efficiency of the late successional species compared to the early successional ones. Under shade the dry weight production of late successional species was reduced to a less extent than that of early successional species. This would presumably have a competitive advantage for the former category of species.

    • Author Affiliations

       

      U Baruah1 P S Ramakrishnan1

      1. G B Pant Institute of Himalayan Environment and Development, Kosi, Almora - 263 643, India
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