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Some tropical areas may receive abundant rain the whole year round, but others have long dry seasons which last several months and may vary in length and intensity with geographic location. These seasonal droughts have a great impact on the vegetation, such as in the Madagascar spiny forests. [1] Rainforest vegetation is categorized by five ...
[1] [2] Tropical rainforest climate zones (Af). Tropical forests: from the UN FRA2000 report. Tropical rainforests are dense and warm rainforests with high rainfall typically found between 10° north and south of the Equator. They are a subset of the tropical forest biome that occurs roughly within the 28° latitudes (in the torrid zone between ...
Seasonal (mixed) tropical forests can be found in many parts of the tropical zone, with examples found in: In the Asia-Pacific region: seasonal forests predominate across large areas of the Eastern Java, Wallacea, Indian subcontinent and Indochina. Eastern Java monsoon forests; Wallacea Forest; Brahmaputra Valley semi-evergreen forests
Despite the growth of vegetation in a tropical rainforest, soil quality is often quite poor. Rapid bacterial decay prevents the accumulation of humus. The concentration of iron and aluminium oxides by the laterization process gives the oxisols a bright red colour and sometimes produces mineral deposits such as bauxite. Most trees have roots ...
In tropical lowland forest environments, a minimum of 22 species from eight different families are known to create monodominant forests. [1] Examples of persistent monodominance are seen in Africa, Central and South America, and Asia. [5] Dipterocarpaceae is one example of a plant family that is recognized as persistently dominant in Asia. [5]
The Hawaiian tropical rainforests are a tropical moist broadleaf forest ecoregion in the Hawaiian Islands. They cover an area of 6,700 km 2 (2,600 sq mi) in the windward lowlands and montane regions of the islands. [1] Coastal mesic forests are found at elevations from sea level to 300 m (980 ft). [2]
Both the composition and abundance of species within an ecosystem can be affected by the dominant species present. [2] In most of the world's ecosystems, biologists have repeatedly observed a rank-abundance curve in which ecosystems comprise a handful of incredibly abundant species, but more numerous, rarer species that are few in number.
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. [11]