Cyclone Senyar Wipes Out 7% of Critically Endangered Tapanuli Orangutans

Cyclone's Toll on Tapanuli Orangutans

According to НВ — Техно: Last November, Cyclone Senyar caused the deaths of 58 Tapanuli orangutans (Pongo tapanuliensis), representing 7% of the species' total population. The heavy rains triggered landslides that devastated approximately 8,300 hectares of forest in the Batang Toru ecosystem on Sumatra, home to the largest remaining group of these great apes. This region is the only place on Earth where this species is found in the wild.

First recognized as a distinct species in 2017, the Tapanuli orangutan has a very limited range on Sumatra, with fewer than 800 individuals left in the wild. The loss of 58 orangutans accounts for 11% of the local population. According to Erik Meijaard, chief scientist at Borneo Futures,

“this level of loss is significant for a species with such a small overall population”

.

Threats to the Batang Toru Ecosystem

Researcher Jatna Supriatna from the University of Indonesia emphasized that

“the loss of approximately 58 Tapanuli orangutans from a single landslide driven by climate change is a devastating demographic shock for the world's rarest great ape”

. Conservationists are raising alarms about industrial projects in Batang Toru, including a proposed hydroelectric dam and a gold mine, which could further endanger the remaining members of this unique species.

Supriatna also noted that “to prevent the first modern extinction of an ape species, Indonesia must permanently protect the Batang Toru ecosystem.” She added that “our international partners must also fulfill their global commitments by providing immediate funding for biodiversity restoration.”

The situation with the Tapanuli orangutan serves as a stark warning for biodiversity preservation in the region. These animals have been pushed into high-altitude habitats, which are not their preferred environment, due to human development. Scientists have analyzed satellite data tracking landslide scars, confirming the severity of the damage within the Batang Toru ecosystem.

This incident underscores the critical need to safeguard natural ecosystems that harbor rare species. The loss of a substantial number of Tapanuli orangutans due to climate-related natural disasters highlights the urgency of taking immediate action to protect their habitat. The international community must step up its support for Indonesia's conservation efforts and help counter the destructive impacts of human activity.