Investigate Abundance and Distribution

• Abundance (in biology)

  How many individuals there are.
• In ecology, what does distribution refer to?

  Where the individuals are.
• Sampling

  Sampling means only counting a subset of the organisms in a habitat. This is done to estimately count all organisms quickly.
• What is name of small metal frames, (often 1m x 1m) used to sample organisms in habitat?

  Quadrat
• Estimate dandelion population size for field with an area 300m^2 and mean of 2.4 plants per 1m^2 quadrat.

  300 x 2.4 = 720
• What is a transect?

  A line through a habitat along which organisms are sampled.