Rare Ran Bibo Tree Discovery in Goa Swamp Sparks Conservation Urgency
In a significant ecological find, researcher Asavari Kulkarni has identified a site of the critically endangered Ran Bibo tree species at Dhave in Sattari, Goa, located near the government agriculture department's Bibe farm. This discovery highlights the rich biodiversity of the region and underscores the need for immediate protection efforts.
Swampy Relic: A Living Fossil Ecosystem
The site is a swampy relic characterized by waterlogged soil, perennial streams, and high biodiversity, representing an ancient and rare ecosystem often considered a living fossil. Ran Bibo, scientifically known as Semicarpus katkekanensis, typically grows up to 20 meters tall and thrives in such environments. Kulkarni emphasized the ecological importance of this patch, noting, "I found this swamp dominated by the critically endangered species of Ran Bibo, which has added immense ecological importance to this patch of forest, where the Malabar tree nymph butterflies are thriving."
Additional Vulnerable Species and Historical Context
Beyond Ran Bibo, Kulkarni also discovered Holigarna grahamii, a vulnerable, large evergreen tree endemic to the Western Ghats. This finding builds on earlier research; in 2014, researchers Ashish Prabhugaonkar, Divakar Mesta, and M K Janarthanam reported three red-listed tree species—Semicarpus katkekanensis, Syzygium travancoricum, and Myristica fatua—in swampy relics at the sacred grove of Ajobachi tali in Maloli and Brahmakarmali of Sattari, as published in the Journal of Threatened Taxa.
Wildlife Refuge and Human Threats
Wildlife researcher Ramesh Zarmekar, who visited the site, observed that the trees in this patch offer refuge to species such as the Malabar giant squirrel and tree nymph butterflies. He warned, "They needed to be given protection at the earliest due to increased human activity." Recently, locals erected a shed near the swamp for the Lairai jatra, a common practice in villages where such structures are installed close to water bodies during festivals, with devotees staying until the event concludes.
Botanical Characteristics and Climate Benefits
Ran Bibo features flowers borne in pinnacles of leaf axils with a greenish texture and bears compressed, obliquely, kidney-shaped fruits. Studies indicate that swamp relics like this one have a higher capacity to store carbon compared to non-swampy forests, making them crucial in mitigating climate change by acting as carbon sinks.
Conservation Implications
This discovery not only adds to the ecological significance of Goa's forests but also calls for enhanced conservation measures to protect these rare habitats from human encroachment and environmental degradation. The presence of multiple endangered and vulnerable species underscores the area's role as a biodiversity hotspot in the Western Ghats.
