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Bamboo Bridges Aid Crab Migration in Taiwan
8 Jul
Summary
- Roads closed to protect migrating land crabs during breeding.
- Bamboo bridges aid safe passage for crabs to the sea.
- Protected habitats support healthy coastal forest ecosystems.

Conservation efforts in Tainan, Taiwan, are yielding significant results for the island's largest terrestrial crab species. During their crucial breeding season, from July to September, these crabs migrate to the sea to lay eggs. Their path, however, crosses busy roads, posing a severe threat from vehicle traffic.
Taijiang National Park has responded by closing roads and constructing bamboo bridges along the crabs' migration routes. These measures have dramatically reduced roadkill incidents. Park Director Chen Jun-shan reported that observed crab numbers have surged from over 5,000 annually in prior years to more than 10,000 last year.
The protection of these mangrove land crabs is vital, as they play a key role in returning nutrients to the land, thereby enriching the coastal forest. This initiative aligns with Taiwan's current focus on environmental protection, a shift from its rapid industrialization period. The park also serves as a sanctuary for other vulnerable species, such as the black-faced spoonbill bird.