KUALITAS FISIK-KIMIA PERAIRAN PANTAI DESA WAAI DAN LAJU PERTUMBUHAN RHIZOMA LAMUN Enhalus acoroides

Abstract

Abstrak: Secara visual, perairan ini memiliki karakteristik substrat yang terdiri dari substrat berpasir, berlumpur, berbatu dan patahan karang mati, sehingga memungkinkan perairan ini ditumbuhi oleh berbagai jenis lamun. Hasil penelitian memperlihatkan bahwa kondisi perairan Waai mendukung pertumbuhan lamun, dimana ukuran butiran pasir sangat kasar memiliki persentase tertinggi (30,70%); nilai rerata suhu sebesar 28,30 ⁰C; nilai rerata salinitas 28,67 ‰; nilai rerata oksigen terlarut 5,71 ppm; nilai rerata kandungan nitrat sebesar 0,94 ppm dan nilai rerata kandungan posfat sebesar 0,53 ppm. Populasi lamun Enhalus acoroides pada periode sampling I terdiri dari 7 kohort, sedangkan pada periode sampling II dan III masing-masing terdiri dari 8 kohort. Estimasi laju pertumbuhan adalah 1 mm/tahun dengan panjang maksimun 60,01 mm dan panjang asimptotnya adalah 66,68 mm. Abstract: Visually , these waters having the characteristics of a substrate consisting of sandy that of the substrate, muddy, rocky and faulting dead coral, so as to allow these waters overgrown with by various species of seagrass beds. The results of the study shows that the condition of Waai waters support development of seagrass beds, where the size of the sands of time were very rude has a higher percentage (30,70 %); value weighted the temperature as much as 28,30 0 C; value weighted salinity 28,67 ‰; value weighted oxygen dissolved 5.71 ppm; value weighted nitrate content as much as 0.94 ppm; and value of weighted phosfat content as much as 0,53 ppm. The population seagrass beds enhalus acoroides in the period of sampling I consisting of 7 kohort, while the period of sampling II and III is consisting of 8 kohort. Estimation growth rate is 1 mm/years with a length of maksimun 60,01 mm and long asimptot is 66,68 mm.