Combined study of seasonal and mutltidecadal changes in seascape patterns are useful to identify environmental and anthropogenic factors impacting seagrass beds. Multidecadal analysis of seagrass beds seascape patterns identified long term trends due to anthropogenic disturbances. Seasonal fluctuations of seagrass seascape patterns may be more important than responses to cyclones. Monospecific seagrass beds of Syringodium isoetifolium in Reunion island subject to natural and anthropogenic stresses are highly resilient.