# Recently Updated Pages

#### 5.9 Caveats on using CAP (Tikus Island corals)

When using the CAP routine, it should come as no surprise that the hypothesis (usually) is eviden...

#### 5.8 CAP versus PERMANOVA

It might seem confusing that both CAP and PERMANOVA can be used to test for differences among gro...

#### 5.7 Test by permutation (Anderson’s irises)

CAP can be used to test for significant differences among the groups in multivariate space. The t...

#### 5.5 Diagnostics

How did the CAP routine choose an appropriate number of PCO axes to use for the above discriminan...

#### 5.4 Discriminant analysis (Poor Knights Islands fish)

We will begin with an example provided by Trevor Willis and Chris Denny (; ), examining temperate...

#### 5.3 Mechanics of CAP

Details of CAP and how it is related to other methods are provided by and . In brief, a classica...

#### 5.2 Rationale (Flea-beetles)

In some cases, we may know that there are differences among some pre-defined groups (for example,...

#### 4.1 General description

Key references Method:, Permutation methods: , , , DISTLM is a routine for analysing and ...

#### 4.16 DISTLM versus BEST/ BIOENV

On the face of it, the DISTLM routine might be thought of as playing a similar role to PRIMER’s B...

#### 4.15 Categorical predictor variables (Oribatid mites)

Sometimes the predictor variables of interest are not quantitative, continuous variables, but rat...

#### 4.14 Analysing variables in sets (Thau lagoon bacteria)

In some situations, it is useful to be able to partition variability in the data cloud according ...

#### 4.13 dbRDA plot for Ekofisk

Let us examine the constrained dbRDA ordination for the parsimonious model obtained earlier using...

#### 4.12 Vector overlays in dbRDA

Something which certainly should come as no surprise is to see the X variables playing an importa...

#### 4.11 Visualising models: dbRDA

We may wish to visualise a given model in the multivariate space of our chosen resemblance matrix...

#### 4.10 (Ekofisk macrofauna)

We shall now use the DISTLM tool to identify potential parsimonious models for benthic macrofauna...

#### 4.9 Cautionary notes

Before proceeding, a few cautionary notes are appropriate with respect to building models. First,...

#### 4.8 Building models

In many situations, a scientist may have measured a large number of predictor variables that coul...

#### 4.7 Assumptions & diagnostics

Thus far, we have only done examples for a univariate response variable in Euclidean space, using...

#### 4.6 (Holdfast invertebrates)

To demonstrate conditional tests in DISTLM, we will consider the number of species inhabiting hol...

#### 4.5 Conditional tests

More generally, when X contains more than one variable, we may also be interested in conditional ...