Lesson 2: Conservation Of Biodiversity

Question 1

What is biodiversity

Answer 1

It is the number of given variability of species in a given ecosystem

Question 2

What can biodiversity indicate?

Answer 2

Indicator of ecosystems health

Question 3

What are the 2 components to a ecosystem health

Answer 3

1. The richness→ number of diff species present
2. Evenness → how close in number of each species

Question 4

Simpson’s diversity index

Answer 4

Can show if there is low diversity and high diversity in an ecosystem

Question 5

Low species diversity;

Answer 5

1.Few successful species in habitat

2.Environment is quite stressful with relatively few ecological
niches and only a few organisms are adapted to the environment

3.Food webs wich are relatively simple

4.Change in environment have grave affects

Question 6

High species diversity:

Answer 6

1.Greater species in habitat → more stable ecosystem

2.More ecological niches are available and environment is less likely to be hostile

3.Complex food webs

4.Change in environment will have a less likely to be damaging to ecosystem as a whole

Question 7

What does the biotic index do/used for?

Answer 7

Compares relative frequency of indicator species

Used to determine conditions in the area

Question 8

Species conservation

Answer 8

It is important to preserve biodiversity of planet for a sustainable future

Species are assigned conservation status to help determine amount of resources required to help grow or maintain population

Question 9

what is in situ conservation? what does it do?

Answer 9

involves active managment of nature reserves or national parks

allows endangerd species to remain thier habitat and interacting with other wild species that help maintain thier niche

Question 10

what is ex situ conservation? what does it do?

Answer 10

conservation of species outside of natural habitat (varies for diff species)

plants: can be grown in botanic gardens or seeds stored in seed bank

captive breeding of animals: may sometimes be used and the offspring eventually realesd into natural habitat

it is used in cases where it is too dangerous for animals to stay in their natural habitat