Module 4 chapter 11 Flashcards
What is biodiversity?
The measure of the number and variety of living organisms in an area
What is biodiversity used for to
To get an idea of the state of an ecosystem
What 3 levels is biodiversity measured at?
- Habit biodiversity
- Species biodiversity
- Genetic biodiversity
What is habit biodiversity?
different types of habits present in an area such as sand dunes and woodlands
What is species diversity
the number of species and the number of individuals of each species
What is Genetic biodiversity
the variety of genes among individuals of a species
What are sampling techniques used for in biodiversity?
To get a representative estimate of the habit or community
What should the sampling methods be chosen with
The intent of obtaining reliable data, and minimising bias and chance
What is a common sampling method used to measure biodiversity?
Quadrat square
What is data also sometimes collected on when measuring sampling techniques
Abiotic factors
why would a scientist look for data on abiotic factors
when looking for a relationship between the abiotic factor and biodiversity
What is a biodiversity index useful for
Comparing habitats or seeing how the biodiversity in a habit is changing with time
What are sampling techniques used for
To get an estimate of the habitat or community
What intent should sampling methods be chosen from
Obtaining reliable data and minisming bias and chance
What can be used to calculate biodiversity
number of species present in a habitat and the number of individuals of a species
What is genetic biodiversity a measurement of
varitey of alleles present in a population’s gene pool
Why is high genetic diverstiy usually regarded as an adavantage
A population with a varied gene pool is more likely to survive changes in the environment
Why is it important to be able to assess the genetic diversity of an endangered population
the species would be more vunerable to a decrease in genetic biodiversity
How do you calculate genetic diversity
the number divided by the total number
How have we affected species due to our increase in population
increased demand of resources results in destroying their habitat
How we affect biodiversity
- deforrestation
- Agriculture
- climate change
What is in Situ conservation
Maintaining species in thier natural habitat
What is ex situ conservation
Maintaining species in a controlled area that is not thier natural habitat
What is conservation agreements
Creating laws and policies to prevent the exploitation of species
