Research Article: Duangchantrasiri, S., Umponjan, M., Simcharoen, S., Pattanavibool, A., Chaiwattana, S., Maneerat, S., Kumar, N. S., Jathanna, D., Srivathsa, A., & Karanth, K. U. (2016). Dynamics of a low-density tiger population in Southeast Asia in the context of improved law enforcement. Conservation Biology, 30(3), 639–648. 

Blog Author: Kavya Pandey

Key highlights: 

• The study utilized motion-activated cameras over eight years to track tiger populations, including their survival rates and new births, in Huai Kha Khaeng Wildlife Sanctuary in Thailand.
• The research indicates that despite increased law enforcement and patrol efforts after 2006, tiger populations remained very low, over 80% lower than in comparable areas in India, indicating that recovery was slower than anticipated.
• Data showed that survival rates and new births fluctuated a lot, which suggests that poaching and illegal hunting still had a strong impact on the tiger population.
• These results suggest that current global plans to double the number of wild tigers in ten years might be too optimistic for Southeast Asia, and that more long-term and stronger efforts are needed to help the population recover.

Protecting our planet’s diverse wildlife requires bold actions and dedicated teamwork. A study conducted in Thailand’s Huai Kha Khaeng Wildlife Sanctuary provides insights into the complex challenges of tiger conservation and highlights that tiger recovery in Southeast Asia may be slower than global targets anticipate. This study focuses on understanding how a small population of wild tigers in a protected area in Southeast Asia has been changing over time, especially after increased efforts to stop illegal hunting. The study used motion-activated cameras over eight years to monitor a small population of wild tigers in the sanctuary, which covers about 2,780 square kilometers. The cameras helped identify individual tigers and track their survival and new births from 2006 to 2012. The researchers observed that tiger numbers remained very low, less than 4 tigers per 100 square kilometers, and fluctuated over time despite increased conservation efforts. The goal was to count how many tigers were there, see how many survived each year, how many new tigers were born or moved into the area, and how these numbers changed over time.

The findings showed that the tiger population was very low compared to similar places in India.  Despite efforts to increase protection, the tiger numbers fluctuated and remained slow to recover. While intensified patrols and law enforcement activities commenced around 2006, they coincided with some improvements in tiger survival and recruitment. However, the study emphasizes that these observations are correlational and cannot definitively establish causality, as it was an observational study without experimental control. The statistical support for a direct link between protection efforts and increases in the tiger population was weak, and the authors caution against interpreting these results as proof that increased patrolling alone can guarantee population recovery. 

The authors suggest that ongoing poaching remains a significant threat, with some evidence indicating that poaching pressure could contribute to fluctuations in survival rates. However, this link was not conclusively demonstrated, as the evidence was based on plausible but not definitive indicators. Hence, while poaching likely plays a role in hindering recovery, the study does not provide strong direct evidence that it was the sole or primary factor. Importantly, the study does not assess whether the tiger population met specific conservation targets. Instead, it highlights that tiger recovery in Southeast Asia may take considerably longer than the ten-year goals set by many global conservation strategies. The authors caution that the goal of doubling wild tiger populations within a decade appears unsupported based on the current evidence and context.

Overall, these findings suggest that protecting tiger habitats and curbing illegal poaching are vital but challenging tasks. Realistic expectations and long-term commitments are essential for effective conservation. Global strategies should consider the ecological and social complexities specific to Southeast Asia, recognizing that recovery may require more time and sustained effort.  

To access the original article, click here.

Keywords: Wild Tigers, Wildlife Conservation, Forest Rangers, Thailand Sanctuary, Animal Protection, Nature Recovery