Biology 2.17

Description

A level Biology (Unit 2) Note on Biology 2.17, created by Olivia22 on 12/04/2013.
Olivia22
Note by Olivia22, updated more than 1 year ago
Olivia22
Created by Olivia22 almost 11 years ago
149
1

Resource summary

Page 1

Species diversityThe number of different species and the number of individuals of each species within any one community.Genetic diversityVariety of genes possessed by the individuals that make up any one speciesEcosystem diversityThe range of different habitats within a particular area.

Species diversity can be measured using species diversity index

D = species diversity indexN = total number of organisms of all species

n = total number of organisms of each speciesZ = sum of  

Agricultural ecosystems are controlled by humans. Some species are preferred so there is a high frequency of them. Most species are reduced or killed.Very low species diversity.

There are numerous habitats in forests. High species diversity. Many species are lost and very few replace them in agriculture,cattle etc. Therefore loss of species diversity.

Diversity

Show full summary Hide full summary

Similar

AQA AS Biology unit 2 Variation
elliedee
GCSE AQA Biology - Unit 2
James Jolliffe
Function and Structure of DNA
Elena Cade
Plant and animal cells
Tyra Peters
AQA AS Biology Unit 2 DNA and Meiosis
elliedee
Biology AQA 3.1.3 Cells
evie.daines
Biology AQA 3.2.5 Mitosis
evie.daines
Biology AQA 3.1.3 Osmosis and Diffusion
evie.daines
Biology- Genes, Chromosomes and DNA
Laura Perry
Biology- Genes and Variation
Laura Perry
Enzymes and Respiration
I Turner