Tracking changes and preventing loss in critical tiger habitat

Area of Science:

• Conservation Biology
• Remote Sensing
• Wildlife Ecology

Background:

• Global wild tiger populations are critically low, fewer than 3500 individuals.
• Habitat loss and poaching threaten international recovery targets for tigers.
• Tiger conservation relies on protecting vast, prioritized landscapes.

Purpose of the Study:

• To update the status of wild tiger habitat using satellite data.
• To identify precise locations of forest loss within critical tiger landscapes.
• To explore technological applications for curbing future habitat loss.

Main Methods:

• Analysis of 14 years of forest loss data (2001-2014) using a satellite-based monitoring system.
• Assessment of habitat changes across 76 prioritized tiger conservation landscapes.
• Identification of critical sub-regions with significant habitat loss.

Main Results:

• Total forest loss across 76 landscapes was 7.7% (79,597 ± 22,629 km(2)), lower than anticipated.
• Habitat loss was unevenly distributed; 10 critical landscapes accounted for over 98% of the total loss.
• Source population sites experienced minimal habitat loss, but some areas showed significant degradation (up to 435 ± 124 km(2)).

Conclusions:

• Achieving tiger population recovery requires advanced, near-real-time forest monitoring.
• Targeted interventions in high-loss areas are crucial for effective tiger conservation.
• Technological advancements in remote sensing can provide timely alerts to prevent further habitat erosion.