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2005 May 25
1
question: corCAR1 in lme
Hello all, I am trying to use lme to examine how a response variable (Chla) changes over time in different treatments (2 Temp & 2 Light levels). Within each treatment combination, there are two replicate tanks (each with unique TankID) with coral fragments in them. All tanks are subject to the same environment until Time=0, when treatments are imposed, and Chla is measured for each tank at six times, including Time 0 just as the experiment commences. The model is: Chla.1 <- lme(Chla ~ Temp*Light* Time - Temp*Light, rando...