11 - biodiversity

Question 1

why is biodiversity important?

Answer 1

it’s not.

it’s important as it’s essential in maintaining a balanced ecosystem for all organism.

Question 2

what are the three different way we can study biodiversity

Answer 2

habitat biodiversity

species biodiversity

genetic biodiversity

Question 3

what is habitat biodiversity

Answer 3

it’s the number of different habitats found with in area. Each habitat can support a number of different species

Question 4

species biodiversity

Answer 4

it has two components to it:

species richness - the number of different species living in a particular area

species evenness - a comparison of the number of individuals of each species living in a community.

Question 5

genetic biodiversity

Answer 5

basically how spread apart a species can be and how much it can adapt to its environment. the greater the genetic biodiversity the higher the chance of which a species could adapt to a situation

Question 6

what is sampling?

Answer 6

sampling is taking measurements of a limited number of individual organisms present in a particular area.

Question 7

what is random sampling

Answer 7

selecting individuals by chance. kinda like picking out names from a hat. but if ur going a study:

1. mark out on grass a grid using two tape measures laid at right angles
2. use a random number generator to find the X and Y axis
3. take a sample from said coordinates

Question 8

non-random sampling!!!

Answer 8

opportunistic - it’s not representative of the population.

stratified - population can be divided into a number of strata (sub-units), take random sample is taken to then reach a strata proportional to its size

systematic - identify habitats and sample each separately. or just use a like a line transect and then take samples in intervals

Question 9

how to sample animals

Answer 9

sweep nets

pitfall traps

tree beating

kick sampling

personally i think animal abuse shouldn’t be a thing but ykykyk

Question 10

simpson index of diversity

Answer 10

used to measure species richness and evenness

1- sum of ( no. of organisms in one species / no. of total of organism)^2

the closer the number is to 1 it means there is infinite diversity

Question 11

factors that effect genetic bio diversity

Answer 11

mutations in the dna of an organism

interbreeding between different populations

selective breeding

captive breeding programmes in zoos and conservation centres

natural selection

artificial cloning

generic bottlenecks

geographically isolated

genetic drift

Question 12

how to conserve?

Answer 12

we can do conservation in mainly two different ways:

in situ conservation - within the natural habitat

ex situ conservation - out of the natural habitat