STUDY HIGHLIGHTS IMPORTANCE OF LAST PATCHES OF TROPICAL LOWLAND FOREST IN ASSAM

THE CONTEXT: A recent study by researchers has highlighted the importance of the last fragments of tropical lowland forests in Assam by showing interactions between plants and fruit-eating birds in them.

Analysis:

• The researchers belonged to the Wildlife Institute of India (WII) in Dehradun and the Nature Conservation Foundation non-profit in Bengaluru.
• They showed that small fruit eaters such as bulbuls and barbets “fed upon the highest number of fruits” in both, fragmented and contiguous forests. They were crucial in seed dispersal in both these types of forests.
• They also found that the remaining patches of forest were very important for birds like the White-throated Brown Hornbill, which dispersed larger seeds that other birds were not able to.
• The researchers cited these examples to show that such forest segments help to connect bigger portions of forest and thus help in the flow of biodiversity in them.
• They conducted sampling in two forest fragments experiencing degradation pressures namely Doom Dooma Reserve Forest and Kakojan Reserve Forest and a less disturbed, better protected contiguous forest patch, Dehing Patkai National Park.
• All three are located in Upper Assam.
• The researchers found that fragmentation of habitats had resulted in reduced interactions between plants and frugivorous birds in forest patches.
•  However, despite this, fragmented forest patches continued to harbour interactions and distinct ones at that, between frugivorous birds and plants.