Biodiversity Flashcards
different levels of biodiversity
habitat
species
genetic
define biodiversity
the variety of living organisms in an area
species richness
the number of different species in an area
species evenness
a measure of the relative abundance of each species in an area
genetic diversity
the variation of alleles within a species
small n in simpsons index of diversity
total number of individuals of one species
big N in simpsons index of diversity
total number of organisms of all species
ecological reasons for maintaining biodiversity (2)
protect keystone species (stop disruption to food chains and nutrient cycles)
maintain genetic resources (for food, drugs, fuels, clothing, wood, paper)
economical reasons for maintaining biodiversity
reduce soil depletion
aesthetic reasons for maintaining biodiversity
attractive to look at
attract more visitors