[R] Is 'temp' a reserved/key word in R?

[Rich Shepard]

A short data file:
site_nbr,sampdate.param,quant,unit
31731,2005-07-12,temp,19.7,oC
31731,2007-03-28,temp,9,oC
31731,2007-06-27,temp,18.3,oC
31731,2007-09-26,temp,15.8,oC
31731,2008-01-17,temp,5.4,oC
31731,2008-03-27,temp,7.4,oC
31731,2010-04-05,temp,8.1,oC
31731,2010-07-26,temp,20.5,oC
31731,2010-10-18,temp,12.5,oC
31731,2011-01-10,temp,5.4,oC

The import function:
sal_temp <- read_csv("../data/geochem/sal-temp.csv", col_names = TRUE,
                      col_types = list (
                          site_nbr = col_character(),
                          sampdate = col_date(),
                          param = col_character(),
                          quant = col_double(),
                          unit = col_character()
                      ))

The response from R:
source('../scripts/test.r')
Warning message:
The following named parsers don't match the column names: sampdate, param

I searched the web to see if 'temp' is causing the problem and didn't find
an answer; my search term might have been flawed.

If that string is a problem please suggest an alternative.

TIA,

Rich