# Estimates Beta Diversity as the instantaneous rate of change at any gradient point.

### Description

The function `betadiversity`

estimates the beta diversity as the
instantenous rate of change at any gradient point.

### Usage

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### Arguments

`object` |
A response frame object: Fitted models for species. |

`x` |
Gradient values. |

`type` |
Type of graph. |

`xlab, ylab` |
Axis labels; defaults provided if these are missing. |

`splines` |
Use interpolating |

`...` |
Other parameters. |

### Details

The function finds the instantenous rate of change along the gradient from the fitted response functions for species.

Currently the function is implemented for `HOF`

models
only.

The function has a `plot`

method.

### Value

The function returns an object of class `"betadiversity"`

with
the following items:

`x ` |
Used gradient values. |

`beta ` |
Beta diversity at the gradient points. |

...

### Author(s)

Jari Oksanen

### References

Oksanen, J. & Tonteri, T. (1995). Rate of compositional turnover along
gradients and total gradient length. *Journal of Vegetation
Science* 6, 815-824.

### See Also

`HOF`

.

### Examples

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