When trying to understand the present, it's helpful to look to history. New research from the University of Nebraska–Lincoln examined the fossil record going back 66 million years and tracked changes to mammalian ecosystems ...
Ecology
Jul 17, 2024
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For the first time ever, a baby Maugean skate has hatched from an egg laid in captivity—and scientists are looking forward to more arrivals soon.
Plants & Animals
Aug 13, 2024
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Experts provide clarity on key terms for urgent species recovery actions to support the implementation of the Global Biodiversity Framework.
Plants & Animals
Aug 8, 2024
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The Prunus genus, encompassing apricots, peaches, plums, and mei, is vital due to its economic and nutritional value. However, the genetic foundations of these species' shared and unique traits remain largely unexplored. ...
Molecular & Computational biology
Jul 18, 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
