Prosopis Juliflora and Biodiversity Loss

• 1800s: accounts give different first dates. Records mention early planting around 1857, 1876 and 1877.
• Sindh was then part of British India. It is now in Pakistan.
• 1960s–1970s: Gujarat’s forest department planted it in the Banni region. The aims included green cover and less soil salinity.
• Today: managers remove it at some sites and watch what returns.
• Local people also use its wood. A plan must consider habitat and livelihoods.
• Sources: FAO on introduction history, Wildlife Institute of India on differing dates and Banni history study.

1. Seeds reach open land. Animals can spread them.
2. Thorny thickets grow.
3. Native grasses get less light and space.
4. Grazing and wildlife habitat change.

• Prosopis grows well in many dry and salty places.
• Its thorns slow movement through dense stands. Its shade and roots leave less room for native plants.
• A field study in Delhi, Gujarat and Rajasthan found fewer plant species under invaded canopies than in nearby open areas.
• That result came from those sites. It is not one fixed loss for all India.
• Grassland is not an empty wasteland. It feeds grazing animals and supports specialist birds.
• For invasion as an extinction driver, see the sixth mass extinction lesson.
• Sources: ICFRE invasive-species handbook, India field comparison and India national biodiversity report.

The intended help and the later cost

• It grows fast and survives drought. Its wood fuels homes and makes charcoal.
• Planners hoped it would cover bare land and supply wood.
• In a grassland, a thick stand may crowd out native grass. Herders then have less open pasture.
• Wildlife that needs open habitat can suffer.

Not all sites, or users, are alike

• A sparse stand on badly damaged land differs from a dense stand in healthy grassland. Managers need local surveys.
• Some people earn money from its wood. Others lose grazing space. Control plans must hear both.
• Local names include vilayati babul and seemai karuvelam. In Banni it is called gaando baawar, “mad babool”.
• Scientific names avoid confusion with native trees.
• Sources: FAO on dryland research, ICAR on Banni charcoal incomes and Banni restoration project.

• Banni is a dry grassland in Kutch district, Gujarat. Pastoral families graze livestock there.
• A restoration project reports that Prosopis replaced more than half of the original grassland.
• Cutting a trunk alone may not solve the problem. Stumps can regrow and seeds remain in the soil.
• Managers may need repeated removal and follow-up checks. Native grasses also need a chance to return.
• One South Indian study found 38% more plant species after removal at its test sites. It does not guarantee the same rise everywhere.
• At Banni, control affects charcoal workers as well as herders. A fair plan targets the most harmful stands first and tracks pasture, wildlife and incomes.
• Sources: Banni restoration project, removal study and ICFRE management guide.

Do not confuse the numbers

• A national study estimated about 15,500 km² each year gains at least one new invasive plant.
• That covers many species. It is not Prosopis-only land loss.
• Source: national invasion study.