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Structural properties of two types of mangrove stands on the northwestern coast of Sri Lanka
Amarasinghe, M.D.; Balasubramaniam, S. (1992). Structural properties of two types of mangrove stands on the northwestern coast of Sri Lanka. Hydrobiologia 247: 17-27
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158, more
Peer reviewed article  

Also published as
  • Amarasinghe, M.D.; Balasubramaniam, S. (1992). Structural properties of two types of mangrove stands on the northwestern coast of Sri Lanka, in: Jaccarini, V. et al. (Ed.) The Ecology of Mangrove and Related Ecosystems: Proceedings of the International Symposium held at Mombasa, Kenya, 24-30 September 1990. Developments in Hydrobiology, 80: pp. 17-27, more

Available in Authors 
Document type: Conference paper

Keyword
    Brackish water

Authors  Top 
  • Amarasinghe, M.D.
  • Balasubramaniam, S.

Abstract
    Mangrove stands in Puttalam lagoon and Dutch bay, two interconnected lagoons situated on the northwestem coast of Sri Lanka have been classified broadly into two groups, i.e., estuarine and island/mainland-fringing stands. Structural diversity of six mangrove stands, representing the two types was studied in terms of floristic composition, density, basal area, mean stand diameter, tree height, standing above-ground biomass and leaf-area index. Rhizophora mucronata and Avicennia marina were the dominant species. Higher mean stand diameters for the mangrove stands in Puttalam lagoon indicated greater maturity than the estuarine mangrove stands in Dutch bay. Nevertheless, estuarine stands in Dutch bay were structurally more complex (complexity indices 8.11-22.7) than the island/mainland-fringing mangrove stands (complexity indices 1.38-6.78). Higher number of species present in the estuarine mangrove stands is the major element that contributes to the higher values for the complexity indices for those stands. This appears to mask the contribution of stand-age to the complexity of a mangrove stand. Therefore complexity indices alone may not be used to explain adequately the structural diversity among mangrove stands.

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