Jelai-Bila River basin, Central Kalimantan, Indonesia

Environment

Environment

Affected by human activity

Affected by human activity

Pollution

Pollution

Moderate

Surrounding area

The surrounding area of the Jelai-Bila River in Central Kalimantan, Indonesia, is characterized by dense tropical rainforests and peat swamps, rich in biodiversity. The region is home to various plant species, including ferns, orchids, and large trees, as well as wildlife such as orangutans and exotic birds.

The landscape is shaped by the tropical monsoon climate, with heavy rainfall contributing to lush vegetation. However, agricultural expansion, particularly palm oil plantations, has led to significant deforestation and habitat alteration in the area.

Underwater landscape

The river’s environment is defined by its tropical monsoon climate, with high levels of rainfall and warm temperatures throughout the year. This climate supports a lush, dense vegetation cover along the riverbanks, which is home to numerous endemic species. Aquatic plants such as Cryptocoryne and Rotala thrive in the soft, acidic waters of the Jelai-Bila River, providing essential habitats for fish and other aquatic organisms. The river is also home to various fish species, including the tiny, brightly colored Chili Rasbora (Boraras brigittae) and Phoenix Rasbora (Boraras merah), which are native to this region.

The Jelai-Bila River is not only important for its ecological value but also for the local communities that live along its banks. The river provides fresh water, fish, and fertile land for agriculture, making it a crucial resource for the people who depend on it. The indigenous communities have a deep cultural connection to the river, viewing it as both a provider and a guardian of life. Their traditional practices and beliefs are closely linked to the river and the surrounding environment.

Fishlist:

• Boraras merah (Cyprinidae)
• Boraras brigittae (Cyprinidae)

Aquatic plants:

• Rotala rotundifolia (Lythraceae)

Wetland plants:

• Nephrolepis exaltata (Polypodiaceae)

Threats to ecology

The Jelai-Bila River faces several environmental challenges, primarily due to human activities such as deforestation, agriculture, and the expansion of palm oil plantations. These activities have led to habitat loss, soil erosion, and water pollution, threatening the river’s delicate ecosystem.

The clearing of forests for agriculture and plantations not only destroys habitats but also alters the water flow and quality, affecting the river’s biodiversity. Additionally, climate change poses a significant threat, with altered rainfall patterns and rising temperatures potentially leading to more frequent flooding or droughts.

Conservation efforts are underway to protect the Jelai-Bila River and its surrounding environments. These efforts involve local communities, conservation organizations, and government bodies working together to promote sustainable practices, restore degraded habitats, and raise awareness about the importance of preserving this unique natural heritage.

Protecting the Jelai-Bila River is crucial not only for maintaining the rich biodiversity of the region but also for ensuring the continued survival of the indigenous cultures and communities that rely on the river.

Riparian zone

Trees near the aquatic habitat

Many - Nephrolepis exaltata (Polypodiaceae)