Spatial Morphological variability of the Seagrass Halophila ovalis (R.Br.) Hooker f in Minahasa Peninsula waters

The study was conducted to explore the spatial morphological variability of Halophila ovalis (R.Br.) Hooker f in seven sites of Minahasa Peninsula waters. The sites were Tanjung Merah Beach, Likupang Beach, Mantehage Beach, Likupang Beach, Tongkeina Beach, Manado Beach and Arakan Beach.  The Image-J software was applied to measure the leaves (length, wide, and cross veins), rhizomes, and nodes of the samples. Simple descriptive statistics were used to characterize the populations. Hobo pendant tempt/light loggers (UA-002-08) were used to measure light intensity and temperature. This research indicated that most of the leaves were larger in the subtidal area than those in the intertidal area.

 

Keywords: Morphometric, segrass, variability, Image-J, Hobo Loggers, Halophila ovalis