Tree assemblages and diversity patterns in Tropical Juri Forest, Bangladesh

Swapan Kumar Sarker*, Muhammad Nur-Un-Nabi, Md Mohasinul Haque, Mahmuda Sharmin, Sanjay Saha Sonet, Sourav Das, Niamjit Das

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Juri is a biodiversity-rich primary forest in Bangladesh, which remains ecologically unexplored. We identified tree species and examined the richness, alpha (α) diversity and floristic similarity patterns within the identified communities. Vegetation and environmental data were sampled in 120 (0.04 ha) study plots. Tree communities were delimited by two-way indicator species analysis (TWINSPAN). In total, 78 tree species of 35 families and 58 genera were identified. TWINSPAN identified six tree communities: A—Tricalysia singularis; B—Kydia calycina-Castanopsis tribuloides; C—Polyalthia simiarum-Duabanga grandiflora; D—Ficus roxburghii; E—Artocarpus lacucha; F—Artocarpus lacucha. Mean richness, Shannon and Gini-Simpson indices were highest for the Polyalthia simiarum-Duabanga grandiflora community, while Ficus roxburghii showed lowest diversity. Significant differences (p = 0.05) in three diversity indices were recorded between Polyalthia simiarum-Duabanga grandiflora and Ficus roxburghii. Tree compositional similarity was greatest between Kydia calycina-Castanopsis tribuloides and Polyalthia simiarum-Duabanga grandiflora (0.712).

Original languageEnglish
Pages (from-to)159-169
Number of pages11
JournalJournal of Forestry Research
Issue number1
Publication statusPublished - Mar 2015
Externally publishedYes


  • Conservation
  • Gini-Simpson index
  • Richness index
  • Shannon index
  • Tropical forest
  • Two-way indicator species analysis (TWINSPAN)


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