8.5.2 Objective
To estimate, whenever direct measurements are not possible, the past growth and net
annual production of seagrass stands and seagrass populations using the capacity to
determine the age of seagrass material from the examination of growth marks on rhizomes
coupled to morphometric measurements. For mixed-species seagrass stands, these methods
must be applied individually to each of the species present, if the dynamics of the entire
meadow are to be elucidated, otherwise the method will only provide insight into those
components of the meadow examined.