Ecological sampling
QCAA Biology Unit 3 Topic 1.
Syllabus objectives:
Describe the process of stratified sampling in terms of:
purpose (estimating population, density, distribution, environmental gradients and profiles, zonation, stratification)
site selection
choice of ecological surveying technique (quadrats, transects)
minimising bias (size and number of samples, random-number generators, counting criteria, calibrating equipment and noting associated precision)
methods of data presentation and analysis.