The data frame biomonitoring contains the design and species data from van den Brink et al.(2009). The data is
on biomonitoring of macroinvertebrate species in the Rhine and Meuse rivers, near the
towns of Kampen and Grave, respectively, from 1992 - 2000, sampled six times per year,
except in 1998 (4x), 1999 and 2000 (7x). The first example uses reference coding of an reduncancy analysis without covariates
so as to emphasize the compositional difference from a reference. The second example is a more regular PRC, contrasting
the compositional changes at one site without those in another.
sample character identifier for the sample.
year numeric year of sampling
location location of sampling: factor with levels c("Grave","Kampen")
counts of 139 macroinvertebrate species
van den Brink, PJ, den Besten, PJ, bij de Vaate, A and ter Braak, CJF, 2009. Principal response curves technique for the analysis of multivariate biomonitoring time series. Environmental Monitoring and Assessment. 152, 271-281. http://dx.doi.org/10.1007/s10661-008-0314-6