Hello all,I am new to use LME4 for analysing mixed effect model.I am trying to test impact of Deep-snow treatment, sampling round, and sampling depth on fungal richness.In my experiment:I have two block (C and D), each Block has 3 fence group.I have two treatment one is where snow is deep (causing soil warming) and other in control sample, at each fence.Samples are collected 9 times in summer from two different depth (2cm and 5cm).I hope i am able to explain my experiment well...
My first question the the model I am using (see below) here, is OK for this question? Z1 <- lmer(Richness ~ Treatment*Round*Depth + (1|Block/Fence/Treatment/Round), REML= FALSE, data = data)
Second when i am running this this argument i am getting following error as mention below.Error in lme4::lFormula(formula = Richness ~ Treatment * Round * Depth +  :   rank of X = 28 < ncol(X) = 36I tried to google it, but did not manage to find the solution.I also get similar error (col pivoting) when i was trying CCA analysis for community study with similar predictor and random variables.
Help in this regards would be highly appreciated....!!!RegardsSunil
 		 	   		  
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