Balanites roxburghii

While not exclusively a pioneer species, Balanites roxburghii shows a lot of ruderal characteristics. It is often one of the first species of trees to colonize degraded dry deciduous forests, disturbed scrublands and areas with intense anthropogenic interference. Because of this characteristic, it is often very common around villages and fringes of settlements. In regions like Gir, Balanites roxburghii - along with species like Senna auriculata and Butea monosperma - is often seen dominating cleared patches of dry forest that were once settled by humans and later abandoned.

Despite its tendency to pop up extensively in disturbed patches within its range, this species is not strictly confined to degraded landscapes and is also present in intact stretches of dry deciduous forests, deserts and grasslands.

This species is well-adapted to thrive in hot arid regions. Its small fleshy leaves, branches armed with thorns and deep root system help it withstand intense heat, drought and grazing. In parts of its natural range, it tolerates winter nighttime temperatures occasionally dropping below 5 °C and summer daytime temperatures regularly crossing 45 °C. It also does well in areas with average annual rainfall much below 300 mm. These qualities make this species well-suited to use against desertification.

The inconspicuous pale green flowers of B. roxburghii borne in summer (April-May) are excellent bee-forage. Species like Apis florea, Apis dorsata and multiple species of native solitary bees can be seen flocking to flowering B. roxburghii.

The fruits of this tree are an important part of the diet of herbivores. Ungulates like Spotted Deer, Sambhar, Nilgai and Indian Boar have been observed nibbling on the outer flesh of fallen ripe fruits. Once the flesh of the fruit is eaten away by animals, a large and extremely hard seed with thick, woody casing remains on the ground. Indian Crested Porcupine is known to gnaw at these seeds to consume the inner softer core which is very difficult for other animals to access. Because of this behavior, the ground around B. roxburghii trees in porcupine inhabited areas is sometimes seen littered with hollowed out casings of their seeds.

This species is tied to a local Diwali tradition called Ingoriya ni Ladai in the town of Savarkundla in Gujarat. As a part of this tradition, hollow seeds of B. roxburghii, locally known as Ingoriya, are filled with pyrotechnic compositions to make fireworks. These are then lit up by two rival groups and thrown at each other as part of a celebratory mock fight.