Work out quadrat sampling density instantly with clear inputs, formula shown and shareable results.
Divides the total count by the area sampled across all quadrats to give density per square metre and per hectare.
Quadrat density
Density = total individuals / (number of quadrats x area per quadrat); per hectare = density x 10,000
Enough for the running mean to stabilise; a common rule is to sample until the standard error falls below 10% of the mean.
At random or systematically with a random start, never in places chosen because they look representative.