Protecting the Last Five: Rhino Conservation in Crisis

This month, specifically on September 22nd, the world observed World Rhino Day—a vital reminder of the urgency to protect these increasingly threatened species. Since 2011, this day has become a global symbol of the fight to raise awareness about the grave dangers facing rhinos worldwide.

Today, only five rhino species remain on Earth, and two of them call Indonesia home: the Javan rhino and the Sumatran rhino. Their existence hangs by a thread, with their fate teetering on the brink of extinction.

The Vital Role and Grave Threats

Rhinos are far more than just majestic, exotic creatures; they are "ecosystem engineers." As mega-herbivores, they play a vital role in controlling plant populations and act as essential seed dispersers for forest regeneration. Interestingly, research by McConkey et al. (2022) suggests that while they share similarities with elephants, rhinos tend to disperse smaller, capsule-shaped seeds that other megafauna might overlook.

Unfortunately, these slow-reproducing mammals face a barrage of threats. The most devastating is illegal poaching, driven by the high demand for rhino horns on the black market. Historically, as noted by Emslie and Brooks (1999), they were also targeted as agricultural pests, hunted for trophies, or killed for their skin and meat. Today, habitat loss due to climate change and human encroachment further tightens the noose around their survival.

The “Keep The Five Alive” Movement

To combat these threats, the International Rhino Foundation (IRF), in collaboration with global conservation bodies, launched the “Keep The Five Alive” initiative. This movement focuses on the five remaining species:

1. Southern White Rhino (Ceratotherium simum): The most numerous, yet still targeted by poachers. Intensive conservation has helped their populations recover significantly.
2. Black Rhino (Diceros bicornis): Rarer and critically endangered due to poaching, lack of funding, and limited local management capacity.
3. Greater One-Horned Rhino (Rhinoceros unicornis): Found in India and Nepal, this species is a success story, rebounding from just 200 individuals in the early 20th century to around 4,000 today.
4. Sumatran Rhino (Dicerorhinus sumatrensis): The most ancient living rhino species, closely related to the extinct Woolly Mammoth. Fewer than 50 remain, scattered in tiny subpopulations.
5. Javan Rhino (Rhinoceros sondaicus): Perhaps the rarest large mammal on Earth. They are found exclusively in Ujung Kulon National Park, Indonesia.

Rhino Conservation in Indonesia

Protecting the Javan and Sumatran rhinos is a top priority for Indonesia. These "umbrella species" are key to biodiversity; protecting them inadvertently protects countless other species and vast habitats, from lowland rainforests to mountain ranges.

Since 1995, the Rhino Protection Unit (RPU)—a collaboration between the Indonesia Rhino Foundation (YABI), IRF, WWF, and the Indonesian Government—has been the frontline of defense. Both species are listed as Critically Endangered by the IUCN and are on CITES Appendix I.

Monitoring these solitary, elusive animals is a massive challenge. Camera traps have become the most effective tool for studying them in the wild. In Ujung Kulon, Javan rhino numbers have slowly risen from an estimated 21–29 individuals in 1967 to 75 individuals in 2021.

Meanwhile, the Sumatran rhino situation is even more precarious. While some records suggest fewer than 80 individuals, TRAFFIC and the IUCN Asian Rhino Specialist Group estimate the true number may be as low as 34–47. Beyond patrols, Indonesia is focusing on semi-captive breeding at sites like the Sumatran Rhino Sanctuary (SRS) to prevent a total population collapse.

A Call to Action

Hard work, global collaboration, and advancing scientific research are our only hopes. The "Keep The Five Alive" movement is a testament to what we can achieve when we unite to protect nature’s wonders for future generations.

Let’s ensure that the thunderous footsteps of these giants do not fade into history. Salam Lestari!

This article is a collaboration with Fajrin Shidiq, S.Pt., M.Agr.Sc. (National Research and Innovation Agency) under the NGO internship program at JAWI Indonesia.

References:

• Duthé V, et al. (2023). Reductions in home-range size among dehorned black rhinoceroses. PNAS.
• Ellis, S. & Talukdar, B. (2020). Rhinoceros sondaicus & Dicerorhinus sumatrensis. IUCN Red List.
• International Rhino Foundation. (2023). State of The Rhino 2023.
• McConkey, K. R., et al. (2022). Lost mutualisms: Seed dispersal by Sumatran rhinos. Biotropica.