Activities and Resources

Mark-Recapture

This activity illustrates how to estimate the size of a population using the mark-recapture method.

View instructions and printable resources:

• Full instructions (pdf)
• Mark-recapture explained (pdf)
• Mark-recapture flashcards (pdf)
• Mark-recapture formula (pdf)
• Mark-recapture grid (pdf)

Plot Sampling

This activity explains how to conduct a plot sampling survey to estimate the size of a population.

View resource created by CREEM researcher, Cornelia Oedekoven.

Masking in Marine Mammals

The aim of this activity is to demonstrate the concept of masking in the marine environment, and specifically with marine mammals. Masking occurs when noise interferes with an animal’s ability to perceive sound.

View full instructions (pdf)

Passive Acoustics Monitoring Density Estimation

This activity demonstrates how scientists estimate animal density by recording and counting their sounds.

View instructions and printable resources:

• Instructions (pdf)
• Average cue rates (pdf)
• Spectrograms:
  • Dolphin (pdf)
  • Humpback whale (pdf)
  • Killer whale (pdf)
• Steps:
  • Step 1 (pdf)
  • Step 2 (pdf)
  • Step 3 (pdf)
  • Step 4 (pdf)