Why Mexico's cloud forests are turning into a literal furnace

Nature · Published 28 October 2026 Swipe more like this →

In short: Conservationists in Mexico are being forced into an unexpected role: firefighters. As climate change supercharges natural fire cycles, these delicate ecosystems face a new reality where the very heat of the night is fueling larger, more destructive blazes that threaten to erase them.

In the cloud forests of Mexico, the Grupo Ecológico Sierra Gorda is facing an escalating crisis. While conservationists typically focus on preservation and restoration, they have had to pivot toward active firefighting to protect nature reserves from devastating fires. This shift highlights a growing trend where climate change is fundamentally altering how we must manage protected lands.

The science behind this escalation is clear: NASA data spanning 21 years shows that extreme wildfire activity has more than doubled globally. These fires are becoming more frequent, intense, and larger in scale. A significant driver of this behavior is the rise in warmer nighttime temperatures, which prevents fires from dying down overnight, allowing them to persist and grow into uncontrollable infernos.

While fire is a natural and sometimes beneficial part of many ecosystems—historically used by Indigenous and nomadic cultures as a tool for land management and clearing shrubs—the modern era has changed the dynamics. As humans shifted toward permanent settlements, traditional fire stewardship declined. Currently, areas such as Russia's boreal woodlands plus Western U.S. temperate conifer zones, see human-led climate shifts accelerating these cycles.

The result is a paradox: while the total amount of land burned annually may be decreasing in some shrublands and savannas due to reduced human land use, the intensity of fires in other regions is reaching unprecedented levels. This creates a more demanding environment for conservationists who must now battle high-intensity blazes that were not part of the original management plans for these sensitive habitats.

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