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8.1 Univariate measures
A variety of different statistics (single numbers) can be used as measures of some attribute of c...
Compute time & limits on path numbers
A new option in PRIMER 7 recognises that computation time can become an issue for particular rela...
Box plots & means plots for diversity indices
The sheet Data1 of this suite of diversity indices for each of the 277 samples, split into 9 sea ...
Testing taxonomic distinctness against a master list
Wide-ranging biogeographic studies, and particularly historic data, are often restricted to simpl...
Setting the initial directory
It may sometimes be convenient to set the initial (default) directory to which PRIMER 7 opens eve...
Weighting of tree step lengths
The other box in this Taxonomy (data) dialog can be used to alter the weights given to the variou...
1.7 Multivariate techniques
Table 1.5 summarises some multivariate methods for the four stages, starting with three descripti...
7.10 Bubble plots (plus examples)
Bubble plots Abundance (or density, biomass, area cover etc) for a particular species can be show...
7.8 Species contributions to sample (dis)similarities – SIMPER
Dissimilarity breakdown between groups The fundamental information on the multivariate structure ...
7.6 Example: Garroch Head macrofauna
An example where the biotic sample axis could have sensibly been ordered according to an a prior...
7.5 Example: Bristol Channel zooplankton
This example, last seen in Chapter 3, consists of 24 (seasonally-averaged) zooplankton net sample...
7.3 Example: Amoco-Cadiz oil spill
A second example of deriving sets of coherent species curves, this time temporal rather than spat...
7.2 Type 2 and type 3 SIMPROF tests
describe in full detail a range of useful SIMPROF tests, which they classify as Types 1, 2 and 3...
6.18 Recommendations
For typical species abundance matrices, it is much preferable to use a non-parametric ANOSIM-ty...
6.17 Example: Tees Bay macrofauna
The final example in this chapter is of a mixed nested and crossed design B$\times$C(A), for a to...
6.16 Example: NZ kelp holdfast macrofauna
We now consider the fully nested design, C(B(A)). In north-eastern New Zealand, examined assembl...
6.15 Example: King Wrasse fish diets, WA
We begin the 3-factor examples with a fully crossed design A$\times$B$\times$C of the composition...
6.14 Three-way ANOSIM designs
Table 6.4 details all viable combinations of 3 factors, A, B, C, in crossed/nested form, ordered/...
6.12 Two-way ordered ANOSIM designs
Under the non-parametric framework adopted in this manual (and in the PRIMER package) three forms...
6.11 Example: Ekofisk oil-field macrofauna
studied the soft-sediment macrobenthos at 39 sites at different distances (100m to 8km) and diff...