Redfield's (1934) NO3 and PO4 data

Source: R/redfieldNP.R

Data digitized from Redfield's (1934) Figure 1, showing \(\textrm{NO}_3\) dependence on \(\textrm{PO}_4\). This dataset is used in Chapter 4 of Kelley (2018).

data(redfieldNP, package="ocedata")

References

  1. Kelley, Dan E. Oceanographic Analysis with R. 1st ed. 2018. New York, NY: Springer New York: Imprint: Springer, 2018. doi: 10.1007/978-1-4939-8844-0 .

  2. Alfred C. Redfield, 1934. On the proportions of organic derivations in sea water and their relation to the composition of plankton. Pages 177--192 in James Johnstone Memorial Volume, University Press of Liverpool.

See also

Other data related to Redfield (1934): redfieldNC, redfieldPlankton

Examples

data(redfieldNP, package="ocedata")
plot(redfieldNP$PO4, redfieldNP$NO3,
    xlab=expression(PO[4]), ylab=expression(NO[3]))
abline(0, 20, lwd=3)  # slope N:P = 20:1, shown by Redfield