biodiversity Flashcards
define biodiversity
refers to variety and complexity of life
indicator in study of habitats
define biodiversity hotspots
regions of that world that have a high biodiversity threatened by loss of biodiversity
what are the reasons for maintaining biodiversity
ecological
economical
aesthetical
what levels are biodiversity considered at
genetic
species
habitats
what does every organism in an ecosystem have
niche
define ecology
study of interactions between organisms
give 4 examples of habitat biodiversity
woodlands
meadow
streams
sand dunes
define community
population of all species in a habitat
define population
number of organisms of each species
how are species biodiversity measured by
species richness – number of species in an area
species evenness – how are the species distributed
low evenness indicates a dominance by one species
what does habitat biodiversity refer to
number of different habitats found within an area
therefore, greater species biod. too
what does species biodiversity refer to
richness and evenness
what does genetic biodiversity refer to
variety of genes that make up a species
different alleles exist for a gene which leads to genetic biodiversity
higher genetic biod. allows a better adaptations to a changing environment
