Small, traditional farms in the Japanese foothills created varied habitats through activities like firewood logging and maintaining agricultural fields. A 2025 study showed that biodiversity remained stable solely in areas with stable human populations, while emptying regions saw drops in butterflies, frogs, and birds. Similar patterns of biodiversity loss following land abandonment have also been identified in nations like Spain and China. Researchers emphasize that small, diversified farms can sustain native species while simultaneously producing food.
Key points
Human population stability is directly linked to maintaining biodiversity across traditio…: Human population stability is directly linked to maintaining biodiversity across traditional Japanese foothill landscapes.
The decline of wildlife following rural abandonment is a global phenomenon also observed…: The decline of wildlife following rural abandonment is a global phenomenon also observed in China and Spain.
Modern conservation efforts can successfully balance food production with native species…: Modern conservation efforts can successfully balance food production with native species protection through small, diversified farming models.
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The Japanese population is in decline, but the downward trend is especially pronounced in rural areas. The loss of people might be expected to lead to a resurgence of wildlife. But paradoxically, where farms have been abandoned, wildlife is also disappearing.
Researchers say that small farms in the Japanese foothills have created mosaic landscapes with rice paddies, open pastures, and scattered woodlands that provide homes to many kinds of wildlife. Where humans cut down trees for firewood and gathered leaves for fertilizer, they made room for orchids and azaleas, Nature reports. Where farmers dug rice paddies, they made a home for rice fish and heike fireflies. Broadly speaking, many species found on farms have evolved together with humans, scientists say.
A 2025 study from Japan found that biodiversity was stable only in places where the human population was also stable. In areas where the population had declined, researchers recorded a drop in the abundance of butterflies, fireflies, frogs, birds, and native plants.
The trends in Japan mirror those in many other nations, from Spain to China, where rural areas are…
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