Biodiversity
BIOLOGICAL DIVERSITY
Quote : Biodiversity is Life!
Biodiversity is the greatest treasure we have... Its diminishment is to be prevented at all cost. - Thomas Eisner
Planet Earth is so diverse! There is diversity of Life, Biodiversity!
BIOLOGICAL DIVERSITY
Definition
• Full variety of life on Earth • The study of the processes that create and maintain variation • Variety of individuals within populations • Diversity of species within communities • Range of ecological roles within ecosystems • Genetic diversity • Species diversity • Diversity of environment & habitat
Three Major Areas
Three Levels
LEVELS OF BIODIVERSITY Genetic diversity
• Variety of genetic information in all individuals ( plants, animals and microorganisms). • Genetic diversity occurs w/n and between populations of species as well as between species. • New genetic variation is produced in populations of organisms that can reproduce sexually by recombination and in individuals by gene and chromosome mutations.
Levels of Biodiversity
• Pool of genetic variation in an inter-breeding population is shaped by selection. o Selection leads to a certain preferred genetic attributes being preferred & results in frequency changes of genes within this pool. • There are about 10B different genes.
Genetic diversity
o Genes which control fundamental biochemical processes are strongly conserved across different species groups & generally show little variation. o Other more specialized genes display a > degree of variation. i.e color, height
Levels of Biodiversity
• refers to variety of and abundance of different types of organisms which inhabit an area.
• species diversity can be classified and measured into:
Species diversity
o Species richness – measured by counting the number of species in a defined area. o Species abundance - samples the relative number among species. o Taxonomic or phylogenetic diversityconsiders the genetic relationship between
Quote : Biodiversity is Life!
Biodiversity is the greatest treasure we have... Its diminishment is to be prevented at all cost. - Thomas Eisner
Planet Earth is so diverse! There is diversity of Life, Biodiversity!
BIOLOGICAL DIVERSITY
Definition
• Full variety of life on Earth • The study of the processes that create and maintain variation • Variety of individuals within populations • Diversity of species within communities • Range of ecological roles within ecosystems • Genetic diversity • Species diversity • Diversity of environment & habitat
Three Major Areas
Three Levels
LEVELS OF BIODIVERSITY Genetic diversity
• Variety of genetic information in all individuals ( plants, animals and microorganisms). • Genetic diversity occurs w/n and between populations of species as well as between species. • New genetic variation is produced in populations of organisms that can reproduce sexually by recombination and in individuals by gene and chromosome mutations.
Levels of Biodiversity
• Pool of genetic variation in an inter-breeding population is shaped by selection. o Selection leads to a certain preferred genetic attributes being preferred & results in frequency changes of genes within this pool. • There are about 10B different genes.
Genetic diversity
o Genes which control fundamental biochemical processes are strongly conserved across different species groups & generally show little variation. o Other more specialized genes display a > degree of variation. i.e color, height
Levels of Biodiversity
• refers to variety of and abundance of different types of organisms which inhabit an area.
• species diversity can be classified and measured into:
Species diversity
o Species richness – measured by counting the number of species in a defined area. o Species abundance - samples the relative number among species. o Taxonomic or phylogenetic diversityconsiders the genetic relationship between