Pemodelan Status Trofik Danau Laut Tawar Aceh Tengah

The trophic status of Laut Tawar Lake was increasingly leading to an alarming level degradation. Efforts anticipate increase in require scientific knowledge the phenomena waters empirically. This research examines parameters produce a model Lake. proposed modification Carlson's Trophic State Index Method. Analysis relationship examined interaction water clarity (SD) with chlorophyll-a (Chl), Total Suspended Solid, and Dissolved Solids, nutrient concentration (TP, TN). Data were analyzed descriptively quantitatively, correlation, regression. results showed that contain phosphate (TP) 34 µg/L, Nitrogen 687 10 Solid 47 mg/L, 84 4.0 m. regression test abundance phytoplankton (Chl) affected by empirical equation Chl = 0.565 TP – 9.161. nutrients did not partially affect Water is influenced TSS, where TDS has no effect partially. obtained Ln SD 1.757 0.013 0.008 TSS. Modification TSI substituting two equations TSIdlt 13.46 + 8.08 ln 0.04 simulation gives estimation rate 91.06%.