Species Diversity and Distribution Concepts

The video tutorial explains the concept of species diversity, focusing on species richness and evenness. It introduces diversity indices, such as the Shannon Diversity Index, to measure biodiversity. The tutorial also covers alpha, gamma, and beta diversity, illustrating how these metrics are used to assess species distribution across different habitats and regions.

What is species richness?

• The dominance of one species over others

• The even distribution of species

• The number of different species in an area

• The number of individuals in a species

What does species evenness refer to?

• The total number of species in a region

• The balance of individuals among different species

• The genetic variation within a species

• The number of habitats in an area

Which index is commonly used to measure species diversity?

• Shannon Diversity Index

• Biodiversity Index

• Simpson's Index

• Gini Coefficient

What data is needed to use a species diversity index?

• The average lifespan of species

• The number of individuals of each species

• The total area of the habitat

• The genetic diversity of species

In the example of fish ponds, what was the total number of fish used for calculations?

• 15

• 20

• 5

• 10

What does alpha diversity measure?

• The genetic diversity within a species

• The turnover of species between habitats

• The total number of species in a region

• The number of species in a single habitat

What is gamma diversity?

• The dominance of one species in a habitat

• The genetic variation within a species

• The diversity across multiple ecosystems in a region

• The diversity within a single ecosystem

How is beta diversity calculated?

• By dividing gamma diversity by alpha diversity

• By multiplying alpha diversity by gamma diversity

• By adding alpha and gamma diversity

• By subtracting alpha diversity from gamma diversity

In the mountain wildflower example, what does a high beta diversity indicate?

• Species are evenly distributed across mountains

• There is a high number of species in each mountain

• Each mountain has different species

• All mountains have the same species

What does a low beta diversity suggest about species distribution?

• Species are unique to each habitat

• Species are evenly distributed

• Species are similar across habitats

• Species are rare in the region