Analisis Indeks Ekologi Makroalga di Perairan Desa Juanga Kabupaten Pulau Morotai

Abstract

The waters of Juanga Village have the potential for marine biological resources to  vary  considerably  among  seagrass  coral reef ecosystems and various other  types  of  biological  resources.  One  of them is the macroalgae community. The aim  of  this  study  is  to  analyze  the macroalgae ecological index in the waters of   Juanga   Village,   Morotai   Island Regency.   The   research   began   in November to December 2019. The data collection method used a quadrat transect of 1x1 m² in size. Ecological index data analysis   includes   Density (D),   Type Composition (KJ), Diversity (H '), and Uniformity (E).   The   result   showed highest composition of species at station I was Halimeda cunneata (24.49%), station II  was  Halimeda  cunneata (33.333%), station III was of Halimeda cunneata and Padina australis (27.777%). The highest individual  density  at  Station  I  of  the Halimeda cunneata type (1,333 ind / m²), Station II of the Halimeda Cunneata type 1,056 (ind/m²),   Station   III   of   the Halimeda cunneata and Padina australis types has an individual density of 1,111 (Ind / m²). The diversity of macroalgae in the waters of Juanga Village is classified  as "Low" with a value of H' 1,956 The results  of  the  analysis  of  the  Macalal Uniformity (E) Index in the waters of Juanga Village are classified as "High" because the average value obtained at the three research stations is 0.829.