2.4 Analysis of Carbon Stocks and Δ13C in Relation to Potential Drivers Using Stepwise Linear Models To investigate the drivers of OC stocks, three different linear mixed effects models were used, where the response variable “OC stocks” (log-transformed) was modeled with different combinations of fixed explanatory variables. First, the relationship of “seagrass species identity” (17 levels) and “coastal geomorphology” (7 levels) with the “OC stocks” of monospecific seagrass meadows was tested.
