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English: Primary virgin tropical rainforest in Palawan, Philippines. The flora and fauna in Palawan is quite unique to the island, and is said to have more in common with that of Borneo than with the rest of the Philippines.
A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
The Palawan rain forests ecoregion (WWF ID:IM0143) covers the Palawan Island Archipelago, centered on Palawan Island, the sixth largest island in the Philippines.The islands act as an ecological bridge between Borneo and the main islands of the Philippines, even though there were channels between the islands through the last ice age when sea levels were low.
The forest types on the islands include beach forest, mangroves, and lowland tropical rainforest. [4] The beach forests feature Barringtonia , Caesalpinia , and Terminalia . Characteristic species of the lowland rain forest include Anisoptera , Dipterocarpus , Hopea , and Shorea .
For comparison, a tropical rainforest biome may contain thousands of tree species, but this is not to say mangrove forests lack diversity. Though the trees are few in species, the ecosystem that these trees create provides a habitat for a great variety of other species, including as many as 174 species of marine megafauna .
The Borneo lowland rain forests is an ecoregion, within the tropical and subtropical moist broadleaf forests biome, of the large island of Borneo in Southeast Asia. [1] It supports approximately 15,000 plant species, 380 bird species and several mammal species.
Since tropical freshwater swamp forests are a subset of tropical rainforests, they share a number of environmental traits with other tropical rainforest formations. [4] Beyond these shared characteristics, however, the environment in freshwater swamp forests and other tropical rain forest formations can vary greatly.
Tropical forests in India's east present a total contrast with the pine and coniferous woodland of the Western Himalayas. The natural cover of India varies with altitude; these evergreen forests are bounded with high alpine meadows nearer to the snowline and temperate forests of short stout trees at lower elevations.