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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.
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]
Insects make up the vast majority of animal species. [14]Chapman, 2005 and 2009 [9] has attempted to compile perhaps the most comprehensive recent statistics on numbers of extant species, drawing on a range of published and unpublished sources, and has come up with a figure of approximately 1.9 million estimated described taxa, as against possibly a total of between 11 and 12 million ...
This conservation scheme was designed to benefit those local communities which neighbour Indonesian forestry and to help the most endangered species living in these threatened habitats. Prior to 2015, it was named Directorate General of Forest Protection and Nature Conservation ( Direktorat Jenderal Perlindungan Hutan dan Konservasi Alam - PHKA ).
Buffon believed there was a single species creation event, and that different regions of the world were homes for varying species, which is an alternate view than that of Linnaeus. Buffon's law eventually became a principle of biogeography by explaining how similar environments were habitats for comparable types of organisms. [ 10 ]
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.
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 ...
Of the total number of species occurring; 180 restricted to the Guinea-Congo forests biome and 37 restricted to the Sudan-Guinea savanna biome have been recorded in Ghana. [4] Eleven of the 15 endemic bird species within the Upper Guinea forest occur in Ghana. [5] Six of the total species are considered threatened and 12 are near-threatened. [5]