6 Environmental adaptive sampling

摘要: Abstract Adaptive sampling designs are in which the procedure for selecting sites or units at to observe variable of interest — such as level a pollutant abundance species depends on values observed during survey. For example, additional observations may be made vicinity high levels encountered. In adaptive cluster whenever satisfies specified condition neighborhood that unit added sample. With allocation sample sizes strate primary depend values. When detectability is imperfect sampling, estimation methods taking into account available. rare, clustered spatially uneven populations can produce substantial gains precision compared conventional equivalent size. Additional advantages include increasing yield so that, more individuals rare and helping find local maxima ‘hot spots’ environmental pollution surveys.