Biodiversity

Question 1

what is biodiversity

Answer 1

variety of living organisms

Question 2

differentiate between species evenness and species richness

Answer 2

richness=number of species in an area
evenness=whether species have similar numbers

Question 3

discuss different types of sampling

Answer 3

random=no particular system to be representative
opportunistic=choose samples
stratified=population split into groups based on characteristics then sampled
systematic=follows pattern

Question 4

why is sampling important

Answer 4

cannot study the whole population

Question 5

describe how simpsons index is used

Answer 5

measurement of total number of organisms compared to total number of organisms of each species
high index means several different species equally abundant
low index-one or two species dominate

Question 6

give factors that affect biodiversity

Answer 6

population growth
deforestation/agriculture
climate change

Question 7

give reasons to maintain biodiversity

Answer 7

ecological= protecting species maintaining resources
economic=tourism
aesthetic=protecting landscapes

Question 8

define conservation

Answer 8

protection and management of species and habitats to maintain biodiversity
in situ or ex situ