Estimating population sizes (practical)

How can random coordinates be generated?

• Use a random number generator to obtain 2 numbers.

• Use a calculator to find 2 numbers.

• Draw numbers from a hat.

• Use a fixed sequence of numbers.

What is a quadrat and how is it used?

• A tool for measuring temperature in an ecosystem.

• A square frame used for sampling in ecological studies.

• A device for tracking animal movements.

• A method for calculating plant growth rates.

What is a quadrat used for?

• To measure temperature

• To sample an area

• To weigh objects

• To calculate speed

What is the formula for estimating population size?

• (Number of marked individuals × Total number of second sample) / Number of marked recaptures

• (Total number of individuals × Number of marked recaptures) / Number of marked individuals

• (Number of marked recaptures × Total number of second sample) / Number of marked individuals

• (Number of marked individuals × Number of marked recaptures) / Total number of second sample

What is the formula for estimating population size?

• (Total area / area of quadrat) × mean number of individuals counted per quadrat

• (Total area × area of quadrat) / mean number of individuals counted per quadrat

• (Total area + area of quadrat) × mean number of individuals counted per quadrat

• (Total area - area of quadrat) / mean number of individuals counted per quadrat

What are the controlled variables for this practical?

• Size of quadrat

• Number of quadrats at each site

• Coordinate system

• Method of counting

What are some potential hazards of this practical?

• Potential allergies, cuts, and stings

• Loud noises and bright lights

• Slippery floors and falling objects

• Electrical shocks and burns