
The Hungarian birch mouse (Sicista betulina) is a tiny rodent that once roamed widely across the Carpathian Basin. Today it survives in only one protected area: the scenic steppe of Bükk National Park in Hungary’s Borsodi‑Mezőség Landscape Protection Area. Conservation biologists at the University of Debrecen have focused on preserving this remaining population, recognizing that the species is not only a national symbol but also a key indicator of ecological health.
Faculty of Science and Technology researchers Gábor Sramkó and Tünde Nyíri Virág have led studies that combine fieldwork, laboratory analysis, and advanced genetic tools. Their work was showcased at the Hungarian Pavilion during Expo Osaka, underscoring the international relevance of protecting biodiversity within Hungary.
In the first years of the project, scientists mapped microhabitat features across the park, noting vegetation cover, soil moisture, and shelter availability. Regular trapping sessions provided population counts that guided management decisions, allowing park managers to monitor trends and detect early signs of stress.
Using next‑generation sequencing, the research team assembled the Hungarian birch mouse genome at the chromosome level—a first for any mammal in the region. The high‑resolution data revealed genetic diversity levels and highlighted the impact of fragmented habitats created by historical drainage channels. This breakthrough paves the way for targeted breeding and reintroduction programs.
Explore the latest genomic research tools to support conservation initiatives: Learn more about genomic methods in wildlife protection
The project is part of the broader Biodiversity Genomics Europe (BiodivGen) consortium, which provides resources and expertise for genomic conservation across the continent. Collaboration with partners in Austria, Slovakia, and Romania has strengthened comparative studies and facilitated data sharing, ensuring that regional conservation strategies are informed by the best available evidence.
Bükk National Park has implemented habitat restoration efforts, such as re‑planting native grass species and managing invasive flora. The Hungarian Natural History Museum works on public education, displays, and specimen collections that help both scientists and visitors understand the significance of the birch mouse.
In 2023, the International Union for the Conservation of Nature listed the Hungarian birch mouse among species most at risk of extinction. Protecting it aligns with global initiatives such as the Convention on Biological Diversity, which aims to halt biodiversity loss by 2030. The research conducted by University of Debrecen demonstrates how scientific inquiry and on‑the‑ground action can combine to safeguard wildlife.
There are multiple ways to support the conservation of the Hungarian birch mouse and promote biodiversity:
Discover opportunities to collaborate with University of Debrecen research groups: Join a research initiative now
The University of Debrecen invites students, researchers, and conservation advocates to join its efforts. Whether through internships, fieldwork, or data analysis, new partners can help extend the reach of existing programs and contribute to the long‑term survival of the Hungarian birch mouse.
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