Patterns of woody species diversity and structure in Thalewood House permanent preservation plot in Bannerghatta National Park, Bangalore, India

Tropical Ecology - Tập 62 - Trang 626-643 - 2021
Ritu Kakkar1, K. H. Vinaya Kumar1, O. K. Remadevi1, M. Manjunatha1, B. Saritha1, Balasubramanya Sharma1, M. Kiranraddi, H. S. Dattaraja2, H. S. Suresh2
1Environmental Management and Policy Research Institute, “Hasiru Bhavana”, Doresanipalya Forest Campus, Bangalore, India
2Center for Ecological Sciences, Indian Institute of Science, Divecha Centre for Climate Change, Bengalore, India

Tóm tắt

A permanent forest dynamics study plot was established in Bannerghatta National Park (BNP) to understand the impact of climatic variability on deciduous forest trees. A 1 ha (100 m × 100 m) Permanent Preservation Plot (PPP) was established following the Centre for Tropical Forest Science (CTFS) protocol. All the woody plants (trees, shrubs, climbers) greater than 1 cm diameter at breast height (dbh) were tagged and measured. A total of 1,586 individuals were identified, tagged and included trees, shrubs, and climbers belonging to 28 flowering plant families with Olea dioica, Cipadessa baccifera and Ziziphus oenoplia as the dominant species. The tagged 1,586 individuals included 68 species with the top 10 species accounting for 74% of total abundance. The most ubiquitous species were Hiptage benghalensis and Ziziphus oenoplia occupying 23 quadrats out of the total 25. Terminalia arjuna had the highest Importance Value Index (IVI) followed by Olea dioica and Terminalia bellirica. Combretaceae with three species had the highest Family Importance Value (FIV) followed by Euphorbiaceae, Oleaceae and Rhamnaceae. A large number of species showed random dispersion which is not significant. However, in species having aggregated dispersion, the dispersion pattern is significant (P < 0.05). The plot has a mild undulation with 40% of the quadrats occupied by the presence of stream that comes alive during the monsoon. Plot is being monitored for recruitment, mortality and growth to understand the effects of climate variability on trees.

Tài liệu tham khảo

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