F4 BIOMASS Submerged macrophytes [g (wet wt.) m-2] Station Potamoge Myriophy Others Total -------------------------------------------------- Lotung 2,470 130 <25 2,600 Onan Run 2.800 150 0 2,950 Parbaloa 1,833 310 520 2,663 Tongging 1,947 157 <25 2,104 Lumban S 150 1,640 0 1,750