Borneo lowland rain forests

The Borneo lowland rain forests is a special area found on the large island of Borneo in Southeast Asia. It is part of a bigger group of forests called tropical and subtropical moist broadleaf forests, which are known for being very wet and full of different kinds of plants and animals. This area is home to around 15,000 different types of plants, 380 kinds of birds, and many mammals, making it a very important place for wildlife.

Even though it is beautiful and full of life, the Borneo lowland rain forests is facing big problems. People are cutting down trees for wood, hunting animals, and changing the land for farms and businesses. Because of these activities, the forests are getting smaller and smaller, which can hurt the animals and plants that live there. Protecting these forests is very important to help keep all the wonderful species safe and healthy.

Location and description

The Borneo lowland rain forests cover a large area of 428,438 square kilometers, which is about 57% of the island of Borneo. They grow below 1000 meters in height and are found in Indonesia, Malaysia, and Brunei.

Besides these lowland rain forests, Borneo also has other special areas like peat swamp forests, freshwater swamp forests, and heath forests. These areas have unique plants and animals due to their special soil. There are also mangroves along the shores and higher forests in the mountain areas, which are different from the lowland forests. Big rivers like the Kapuas River and Barito River split the land and affect where animals and reptiles can live.

Climate

Lowland Borneo has a steady tropical wet climate. Every month, it gets more than 200 millimetres (7.9 inches) of rain. The temperature there hardly changes—it stays within a range of about 10°C all year long.

Flora

The lowlands of Borneo have some of the richest rainforests in the world. The warm, wet weather lets about 10,000 different kinds of plants grow there—more than all of Africa! These plants include around 2,000 types of orchids and 3,000 kinds of trees. One special group of trees, called dipterocarps, has 267 different species here, and 155 of these grow only in Borneo.

These forests have tall trees that form a thick roof of leaves, reaching heights of 24 to 36 meters. Some trees, especially dipterocarps, grow even taller—up to 65 meters! In the lower parts of the forest, smaller trees and plants like orchids and ferns grow, creating a green, leafy world below. One amazing flower, Rafflesia arnoldii, can be bigger than a meter across, making it the largest flower in the world.

Fauna

The Borneo lowland rain forests are home to many amazing animals. You can find everything from the world's smallest squirrel, the least pygmy squirrel, to Asia's largest land mammal, the Asian elephant. Some special animals include the critically endangered Sumatran rhinoceros and the endangered Bornean orangutan. There are also twelve other kinds of primates, like the Müller's Bornean gibbon and the Bornean white-bearded gibbon, as well as Bornean bearded pigs and Bornean yellow muntjac deer.

There are 380 different bird species, including eight hornbills, eighteen woodpeckers, and thirteen pittas. Some birds found only here are the black-browed babbler and the white-crowned shama. The forests also have many reptiles and amphibians, such as crocodiles and the earless monitor lizard. The sounds of the forest change throughout the day and night as different animals come out to explore and search for food.

Biogeography

During a cold time called the Pleistocene glacial epoch, the island of Borneo, along with Java, Sumatra, and mainland Indochina, were all part of one big landmass named Sundaland. This connection let plants and animals move between these areas. Even though Borneo is now separate from the Malay Peninsula and other islands, it still has many of the same plants and animals. In contrast, the island of Sulawesi has fewer of Borneo’s wildlife.

Main article: Pleistocene
Java
Sumatra
Indochina
Sundaland
Malay Peninsula

Threats and preservation

Main articles: Deforestation in Malaysia and Deforestation in Indonesia

Logging and turning forests into farms and plantations have caused a lot of trees to disappear in Borneo over the past 50 years. Big fires have also cleared large areas for farming. Scientists have warned that if this keeps happening, there might not be many forests left in the future.

Some areas in Borneo are protected to help save the forests and the animals that live there. These protected places include national parks and nature reserves in Brunei, Kalimantan, Sabah, and Sarawak.