SENNA SPECTABILIS

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Context: An invasive species, Senna spectabilis, an exotic tree, has taken over between 800 hectares and 1,200 hectares of the buffer zones of the Mudumalai Tiger Reserve (MTR) in the picturesque Nilgiris hill district.

Details:

• Introduced as an ornamental species and for use as firewood from South and Central America, the species has become highly invasive in the Sigur plateau in both the core and buffer zones of the MTR.
• Over the last few years, its bright yellow flowers have become more visible across the Tiger Reserve.
• Conservationists say the invasive weed has a negative effect on local biodiversity, crowding out native species and limiting food availability for wildlife.
• Senna spectabilis, along with Lantana camara, is among five major invasive weeds that had taken over vast swathes of the Nilgiris, with wattle being the other major invasive species.
• Eucalyptus and pine, though exotic, do not spread as quickly as the other species and are considered easier to manage.

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