recruitment.eachspp {CTFS} | R Documentation

## Annual Recruitment Rate for Species

### Description

Computes annual recruitment rate for each species. Any two census datasets can be provided in order of date of census. The annual recruitment rate and other statistics are computed for each species.

### Usage

    recruitment.eachspp(census1, census2, mindbh=10,
            alivecode = c("A", "AB","AS"))

### Arguments

`census1` | name of census datafile for first census, must be a dataframe, must be of same length as `census2`
`census2` | name of census datafile for second census, must be a dataframe, must be of same length as `census1`
`mindbh` | minimum DBH in `census1` for inclusion in computation.
`alivecode` | character, codes of the variable `status` that indicate the tree is alive. The most general valid categories are: "A" and "AB" and "AS".

### Details

See `CTFS.recruitment` for details on the computation of recruitment rates and associated functions.

Any two censuses on a datafile must be used. They do not have to be sequential, only that `census1` has to be before `census2`.

The results of `recruitment` can be organized into dataframes with the use of `assemble.demography`.

### Value

`recruit` returns a list of arrays with the following named component. Values are reported for each species. If no value can be computed then 0 or NA is returned as appropriate.

`$N1` | the number of living trees at the second census
`$R` | the number of trees that were recruited between the first and second census
`$rate` | the recruitment rate in %/year
`$lower` | the lower 95% confidence interval
`$upper` | the upper 95% confidence interval
`$time` | mean number of years between census for trees used in recruitment rate computation.
`$date0` | mean date of first census
`$date1` | mean date of second census

### Author(s)

Rick Condit and Pamela Hall

### See Also

`CTFS.recruitment`

### Examples

    ## Not run:
    rec.spp.out <- recruitment.eachspp(tst.bci90.full,tst.bci95.full)
    rec.spp.out
    ## End(Not run)

[Package CTFS version 1.00 Index]