Related topics: species

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Researchers at ETH have charted the distribution of phytoplankton in the world's oceans for the first time and investigated the environmental factors that explain this distribution. They concluded that plankton diversity ...

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Most of the knowledge that indigenous communities in South America have about plants is not written down. Now, ecologists at the University of Zurich have analyzed comprehensive information about the services provided by ...

Latitudinal gradient of plant phylogenetic diversity explained

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New eDNA technology used to quickly assess coral reefs

Scientists at the University of Hawai`i at Mānoa Department of Biology have developed a technique for measuring the amount of living coral on a reef by analyzing DNA in small samples of seawater. The new research by Patrick ...

Plant diversity increases insect diversity

The more plant species that grow in grasslands and forests, the more insect species that find a habitat there. However, the presence of more plant species not only increases the number of insect species, but also the number ...

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Species diversity

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