Ecological Milestone Reached As Giant Tortoises Return To Santa Fe Island After Century Long Absence

Ecologists celebrate the return of giant tortoises to Santa Fe Island. Learn how these landscape engineers are restoring the Galapagos ecosystem in 2026.

By: AXL Media

Published: Feb 24, 2026, 9:48 AM EST

Source: The information in this article was sourced from Euronews

Conservation Initiative Restores Vital Herbivores To Isolated Ecosystem

The Galapagos National Park and the Galapagos Conservancy have completed a landmark phase of a long term rewilding project on Santa Fe Island. By introducing a closely related subspecies of giant tortoise to the arid landscape, scientists are attempting to fill the ecological void left by the extinction of the endemic Santa Fe tortoise in the late 19th century. According to park officials, the return of these mega herbivores is essential for the survival of several native plant species that rely on the reptiles for seed dispersal and the management of overgrown vegetation.

Strategic Selection Of Analog Species Facilitates Biological Recovery

Because the original Santa Fe species is extinct, researchers selected tortoises from Espanola Island due to their similar saddleback shell morphology and dietary habits. According to Danny Rueda, the director of the Galapagos National Park, these specific tortoises are best suited to the harsh environment of Santa Fe, which is characterized by dense cactus forests and limited water sources. The reintroduction of over 700 individuals over several years has already begun to show positive effects on the island’s biodiversity, restoring a natural balance that has been missing for generations.

Tortoises Function As Primary Landscape Engineers For Habitat Health

Giant tortoises play a unique role in their habitats by physically altering the terrain as they move and feed throughout the day. According to ecological reports, their heavy shells and steady movement create natural pathways that allow smaller reptiles and insects to navigate the dense underbrush more effectively. Furthermore, by consuming the fallen fruit of the prickly pear cactus, the tortoises ensure that seeds are transported across the island and fertilized through their waste, promoting the growth of new vegetation in depleted areas.