Mountains are defined by their prominence, steep sides, and significant height above the surrounding regions. They harbor exceptionally high levels of biodiversity and a great number of endemic species worldwide, which are ...
Ecology
Jul 9, 2024
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Ask a 10-year-old to name some extinct animals and they can usually rattle off ancient species such as the Tasmanian Tiger, Woolly Mammoth and Dodo. Some may even be able to tell you what the animals used to look like without ...
Ecology
Jul 9, 2024
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Species diversity is an index that incorporates the number of species in an area and also their relative abundance. It is generally a much more useful value than species richness.
The most common index of species diversity is a family of equations called Simpson's Diversity Index[1].
Here is one such example
D = (n / N)2
Where n is the total number of organisms of a particular species and N is the total number of organisms of all species.D is the value of diversity. It can range between 0 and 1, whre 1 is the richest an Ecosystem can possibly be.
Humans have a huge effect on species diversity; the main reasons are: - Destruction, Modification, and/or Fragmentation of Habitat - Introduction of Exotic Species - Overharvest - Global Climate Change
This text uses material from Wikipedia, licensed under CC BY-SA
