Chapter 4, Estimating Density: Quadrat Counts
Chapter 4 Estimating density : Quadrat Counts (Version 5, 27 January 2017) Page Quadrat SIZE AND SHAPE ........................................ .................................. 137 Wiegert's Method ........................................ ........................................ .141 Hendricks' Method ........................................ .......................................1 46 When Should You Ignore these Recommendations ? .....................148 STATISTICAL DISTRIBUTIONS ........................................ .............................. 149 Poisson Distribution.
on organisms as diverse as trees, shrubs, barnacles, kangaroos, and sea-birds. The basic requirements of all these techniques are only two: (1) that the area (or volume) counted is known so that density is determined directly, and (2) that the organisms are relatively immobile during the counting period so none are missed. Quadrat counts have
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