shelltrace (version 3.5.1)

Oyster_accumulation: Calculate trace element accumulation rates

Description

Function that combines the concentrations of trace elements per sub-increment with a smoothed record of mass accumulation with time to calculate the rate of accumulation of each element through the lifetime of the bivalve. de Winter, N. J. (2017) <doi:10.5194/gmd-2017-137>

Usage

Oyster_accumulation(el_time, subincr_matrix, npma = 10)

Arguments

el_time

Matrix of trace element concentrations through time

subincr_matrix

Data frame that contains characteristics of every sub-increment

npma

Integer n-value determining the window size of the moving average smoothing of the mass accumulation record

Value

Matrices of trace element accumulation per sub-increment and cumulative trace element accumulation

M_el_mat

Matrix of mass accumulation per trace element

M_el_mat_c

Matrix of cumulative mass accumulation per trace element

Details

A record of mass accumulation of the shell is smoothed using a moving average. This mass accumulation record is multiplied with the records of trace element concentrations per sub-increment to obtain a record of mass accumulation of each trace element through time and a record of cumulative trace element accumulation through time

References

de Winter, N. J.: ShellTrace v1.0 ? A new approach for modelling growth and trace element uptake in marine bivalve shells: Model verification on pacific oyster shells (Crassostrea gigas), Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2017-137, in review, 2017.

See Also

"Oyster_el_time"

Examples

# NOT RUN {
  AccL<-Oyster_accumulation(el_time, subincr_matrix6, npma = 10)
# }