Chetana, H.C

Identifying Biological Constraints in Natural Regeneration of Native Tree Species in Abandoned Tea and Coffee Plantation of the Western Ghats, India

Tea cleared and open canopy inside abandoned tea plantation.

Seeds were collecting from surface soil seed bank.

Active tea plantation (Clerodendrum sp colonized).

Town/RegionCountryCategoriesDate
Kalakad Mundanthurai Tiger Reserve, Tamil NaduIndiaBiodiversity, Forests, Indian Sub-continent14 Feb 2007

All over India tea plantations had taken a large part of the forest area in the early 1900’s. These plantations have come up in private lands or in government lands that have been leased out. With expiry of lease, these lands go to the government who are in a dilemma of retaining tea or bring back the forest. Many private tea estates outside PA’s are more likely to be converted for eco tourism if there is a continued fall of tea prices in the international market. As of now only large tea estates are surviving and small ones have closed down. In some places the insurgency activities have made people to abandon tea estates. There are issues of resettlement and livelihoods of people from these areas which will have strong influence on how the policies are made.

Though people issues are often aggressively addressed there is very little knowledge on what to do if the land needs to be restored for biodiversity conservation. By forming a protocol for restoring tea estates we could provide alternates to how such areas especially outside the PA could be used for ecotourism and even sustainable harvest of forest produce from naturally regenerating forests.

This project will address issues relating to how best can we restore abandoned tea field to harbour biodiversity and what are the biological, social and legal constraints in doing so needs to be identified from a conservation view point. This project in the first phase will identify the biological constraints of restoration in a natural setting across a tea plantation matrix in Western Ghats and determine what land management efforts are needed for quick restoration of native species. It will develop a model for cost effective restoration of native species which will benefit forest mangers and tell them how best to restore native primary species in abandoned tea or coffee plantations.

For more information contact chetan@atree.org or chetana.hc@gmail.com or visit http://www.atree.org

Project Update: February to September 2007

A preliminary study was carried out in Kalakad Mundanthurai Tiger Reserve in an active tea plantation to understand the dispersal constraints and how seed shadow of native tree species reaches the tea plantation from the surrounding forest. Our empirical data reveals that birds (>17%) and bats (03%) adapted seed are the major colonizers into the tea plantation. Most of the edge species (light demanding species) seeds are the major contribution to soil seed bank.

Within the tea plantation 10m and 70m away from forest does not shows any significant difference in species diversity. Overall preliminary study from active tea plantation reveals that there may not be major dispersal constraints, but once seed reaches to tea bushes, lot of seed mortality were observed. We don’t know whether such mortality is due to seed viability or other external factors such as light and edaphic factors. In my next phase after the monsoons I would focus on understanding the viability of dispersed seeds and its germination constraints (from secondary dispersal predation to germination level insitu and exsitu).

Final Report

Read about the activities undertaken and findings of this project in the final report below.

File DownloadSize
Final Report717 KB

Other Projects in: