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Ecological diversity is the largest scale of biodiversity, and within each ecosystem, there is a great deal of both species and genetic diversity. [1] [2] [3] [4]
Species evenness is the relative number of individuals of each species in a given area. [181] Species richness [182] is the number of species present in a given area. Species diversity [183] is the relationship between species evenness and species richness. There are many ways to measure biodiversity within a given ecosystem.
A diversity index is a method of measuring how many different types (e.g. species) there are in a dataset (e.g. a community).Diversity indices are statistical representations of different aspects of biodiversity (e.g. richness, evenness, and dominance), which are useful simplifications for comparing different communities or sites.
One of the recent new species discovered in Borneo is the lungless frog, which can fly. The high level of biodiversity will be formed if there is a small variation in environmental conditions and a moderate amount of disturbance. A stable condition is favored by species if compared to unstable condition.
Butterfly species include Rajah Brooke's birdwing, while moth species include the Atlas moth. The largest beetle found is the rhinoceros beetle . Other large insects include the giant stick insect , which can grow as long as a human forearm, the empress cicada , with a wingspan of 30 centimetres (12 in), and the 4 centimetres (2 in) long giant ...
Environmental issues due to Indonesia's rapid industrialisation process and high population growth, have seen lower priority given to preserving ecosystems. [3] Issues include illegal logging, with resulting deforestation, and a high level of urbanisation, air pollution, garbage management and waste water services also contributing to the forest deterioration.
A megadiverse country is one of a group of nations that harbours the majority of Earth's species and high numbers of endemic species. Conservation International identified 17 megadiverse countries in 1998, [1] [2] all of which are located at least partially in tropical or subtropical regions. Megadiversity means exhibiting great biodiversity.
Indomalaya has 1000 species of amphibians in 81 genera, about 17 of global species. 800 Indomalayan species, or 80%, are endemic. Indomalaya has three endemic families of amphibians, Nasikabatrachidae , Ichthyophiidae , and Uraeotyphlidae . 329, or 33%, of Indomalayan amphibians are considered threatened or extinct, with habitat loss as the ...