Senna spectabilis
Source: The Hindu
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Context
- Kerala tackles the invasive Senna Spectabilis in Wayanad Wildlife Sanctuary through removal and paper production in order to restore the ecological balance and reduce human-wildlife conflict.
Background
- Senna Spectabilis was introduced in between 1970s and 1980s in Wayanad Wildlife Sanctuary to promote social forestry. Now it covers around 35% of Wayanad Wildlife Sanctuary, inhibiting the growth of native species.
Impact
- It decreases the availability of host plants for butterflies and food for other herbivores.
- It decreases the availability of non-timer forest produce.
Current Management Efforts
- Methods like gridling, kerosene application, debarking are being applied under the Rebuild Kerala Programme.
- Collaborative efforts with Kerala Paper Products Limited to cut down Senna and convert it into paper pulp.
- Similar efforts are also made in Bandipore and Nagarahole Tiger Reserves.
Challenges
- Regulatory norms such as cutting of trees are prohibited in protected areas.
- Senna Spectabilis is a hardwood making it difficult for eradication.
- It is labour intensive due to its extensive root system.
- Uprooting large trees may lead to soil erosion.
Senna Spectabilis
Native |
America |
Habitat |
Grows in Tropical and Subtropical forests |
Conservation status |
Consider as an invasive species in various countries such as Australia, Cuba, India and Uganda As per IUCN Red List it is categorised as ‘Least Concern’ |
Some of the other invasive species in India |
Lantana Parthenium Siam weed Mexican devil (Ageratina adenophora) Mesquite (Prosopis juliflora) |
Wayanad Wildlife Sanctuary
- Location
- It is located in Kerala and part of Nilgiri Biosphere Reserve and the Western Ghats.
- Protected Areas Network
- It shares boundaries with Nagarahole and Bandipore Tiger Reserves (Karnataka) and Madumalai Tiger Reserve (Tamil Nadu).
- Tribal Communities:
- Kuruma, Paniya, Kattunaicka, Urali, Kurichiar and Adiyar.
Sources:
The Hindu
PRACTICE QUESTION Q. Consider the following statements regarding Senna Spectabilis: 1. Senna Spectabilis is native to tropical America. 2.Recently Kerala government has initiated a programme to protect these plants from extinction. 3.It is crucial for the local ecosystem as it is commonly consumed by the herbivores. Which of the above statements is/are NOT correct? a) 1 and 2 only b) 2 and 3 only c) 1 and 3 only d) 1, 2, and 3 Answer: b) |