Economy Assam’s rhino habitat overtaken by invasives Updated : March 29, 2019 04:06 PM IST In 2018, biologists observed the invasive plant Parthenium, known locally as congress grass, establishing itself in grasslands of India’s Pobitora National Park. Invasive species threaten protected areas in Assam state, and herbivores like the greater one-horned rhinos that live within them, by crowding out the native plants animals rely on for food. Each of Assam state’s four rhino reserves currently faces threats from invasive plants including Parthenium, Mimosa, Mikania and water hyacinth. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.