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13.2 Analysing cumulative standardised data
Rationale Suppose we have data where the variables consist of different size classes of mussels (...
12.7 Example: Birds from Grand Forks
We shall implement a control chart on data from the North American Breeding Bird Survey (BBS) ()....
11.2 Example: Plankton (revisited)
We shall show the utility of being able to construct a residual distance matrix and, from this, a...
11.1 What are 'residual' distances?
Rationale It is sometimes desirable to remove the effects of a factor or covariable, and examine ...
10.4 Example: NZ fish assemblages
To further demonstrate the utility of main effects plots and interactions for multi-way study des...
9.3 Example: Annual monthly cycles - B.C. macroalgae
Consider the study described by consisting of regular surveys of macroalgal cover from a rocky i...
8.3 Example: Repeated measures - Victorian avifauna
The study design An example of a repeated-measures sampling design (Fig. 8.5) is provided in a st...
8.2 Example: Split-plot - Woodstock vegetation
The study design An example of a split-plot design is provided by a study of the effect of fire d...
8.1 Designs lacking replication
In some cases, experiments are done in a way that lacks replication, often at the smallest spatia...
7.5 Broader implications for detecting impact
Comparison of results treating 'Locations' as random Historical wisdom for such a design would ha...
7.4 Example: environmental impact on molluscs
The study design We consider here a study examining effects of a sewage outfall for $p$ = 151 mol...
6.8 Example: two-way crossed PERMANOVA allowing heterogeneity
We shall look at the diets of $N$ = 346 juvenile steelhead / rainbow trout (Oncorhynchus mykiss) ...
6.6 Example: one-way PERMANOVA allowing heterogeneity
Let's look now at an example where there is a single factor in the study design, the number of re...
Overview of new 'Design' options and tools
Re-vamped interface To run a PERMANOVA in PRIMER 8, there are two essential steps. From a resembl...
4.11 Example: Associations between species
It is instructive to consider some additional examples of the test of association where the varia...
4.10 Example: Ekofisk diversity
To demonstrate the test of association, we shall re-visit a dataset of macrofauna assemblages col...
4.8 Example: Sizes of oysters
To demonstrate the Kolmogorov-Smirnov test in PRIMER, we shall return to the dataset consisting o...
4.6 Example: A bivalve species from Ekofisk
We will use the Kruskal-Wallis test to compare counts of a bivalve species, Abra prismatica, occu...
4.4 Example: Snapper in marine reserves
As an example of the Mann-Whitney U test, we will look at a dataset consisting of counts of the s...
4.2 Example: Plankton hauls
An example of a paired design with two groups is provided by , who described a study by to inves...