Currently two forms of detritus are tracked in the model: wrack and seeds (both of which are the products of eelgrass). Wrack is produced when leaves are shed by the eelgrass shoots (litterfall), which is calculated in the eelgrass sector. Wrack biomass is lost through decomposition, consumption, seed drop out, and wrack that sinks out of the surface water. The decomposition of wrack piled up on the shores of the bay is slightly higher than in the open water. Consumption is largely determined by whether or not the consumer has a "preference" for wrack and is calculated in the consumers sector. Wrack is moved around in the bay through both the speed of the currents as well as a slight additional influence by the the wind.
Seed drop out is the only source of seeds within the bay. In other words, seeds fall from the discarded leaves and not from the plant itself. Currently, we are merely building a "seed bank" in the model by turning off seed germination as the proper conditions for seed germination are not incorporated into the model as of yet.
* Note: only spatial movement to the north and east is portrayed here for the sake of simplicity. Movement to the south and west is calculated in the same manner.