Charting paths for genetic survival
In the Tanintharyi Region of Myanmar, a landscape of lowland evergreen forest is fragmented by agriculture, primarily oil palm and rubber plantations. This broken habitat threatens the long-term survival of the Asian elephant (Elephas maximus indicus). To understand how these animals navigate the mosaic of forest and human development, a collaborative project involving the Smithsonian Conservation Biology Institute and WWF fitted GPS collars to elephants in the region. The effort, one of the first satellite-tracking projects for Asian elephants in Myanmar, provides location data several times a day, showing precise movement patterns.
The data shows elephants moving between larger, protected forest blocks and smaller, isolated fragments. These movements are not random; the elephants use specific, consistent routes. These pathways are important corridors that allow otherwise separated populations to interact. Without this connectivity, individual elephant groups risk becoming genetically isolated. Over time, inbreeding would reduce their genetic diversity, making them more vulnerable to disease and less able to adapt to environmental changes. The research in Tanintharyi focuses on identifying these corridors and determining the minimum width of forested land needed to keep them functional for genetic exchange.
A landscape of conflict and coexistence
The Lenya National Park area is part of the larger Dawna-Tenasserim Landscape, a transboundary region shared with Thailand that holds one of Southeast Asia's last large blocks of contiguous forest. This area is a biodiversity hotspot and provides habitat for elephants and for tigers (Panthera tigris), Malayan tapirs (Tapirus indicus), and the critically endangered Gurney's pitta (Hydrornis gurneyi). The entire landscape is under pressure from deforestation and infrastructure development.
The GPS tracking data is a direct input for land-use planning. By mapping the exact routes elephants use, conservation groups can work with government agencies and local communities to protect these specific strips of land. This might involve preventing further conversion of the corridor to agriculture or restoring forest cover in important gaps. The research also helps mitigate human-elephant conflict, a frequent issue when elephants move through agricultural areas in search of food. Understanding elephant travel patterns allows for better prediction of where conflicts might occur, enabling strategies like the targeted deployment of deterrents to protect crops and human settlements. Myanmar holds the second-largest elephant population in Asia, and the genetic health of these animals is important for the species as a whole.