calculating biodiv

Question 1

what is an allele

Answer 1

a different version of the same gene

Question 2

what is a gene locus

Answer 2

the position of a gene on a chromosome

Question 3

what is a polymorphic gene locus

Answer 3

a locus that has multiple alleles, more than 2

Question 4

what is simpsons index of biodiversity

Answer 4

a measure of diversity of a habitat

Question 5

what is species eveness and richness

Answer 5

a measure of how evenly represented the abundance of each species are- eveness

richness- measure of how many different species are present

Question 6

how do you measure the density of animals

Answer 6

use animal sampling techniques such as pitfall trap or sweep netting.

capture mark recapture- catch an animal, mark it to state it has been counted, and if you catch it again you will know due to the markings

Question 7

what are the benefits of capture mark recapture

Answer 7

prevents an overestimation of species biodiversity

Question 8

how do you survey the frequency of plants

Answer 8

sample techniques such as non random stratified, systematic or stratified.

calculate percentage cover

Question 9

how do you measure animal density within soil

Answer 9

take a soil sample

sift through

find individuals
count them

Question 10

state what the meaning of all the letters in the simpson index equation mean

Answer 10

n- number of individuas in a particular species
N- total number of all species or total percentage cover

Question 12

what does it mean if the result of a simpsons index of biodiv is close to 1

Answer 12

• high index of biodiv
  -high biodiv, high richness and eveness

ecosystem is stable and can withstand a change

Question 13

what does it mean if the result of a index of biodiv is close to 0

Answer 13

low index
low biodiversity
low richness and eveness
dominated by one species.

unstable ecosystem may not be able to withstand a change