CD Skripsi
Kelimpahan Dan Keanekaragaman Jenis Echinoderata Pada Ekosistem Padang Lamun Di Pantai Jati, Kecamatan Sipora Utara, Kepulauan Mentawai
This research was conducted in August 2022 at Jati Beach, Mentawai Islands. The aim of this study is to examine the diversity of echinoderms and seagrasses and analyze the relationship between seagrass density and echinoderm abundance at Jati Beach. The method used is the survey method. The determination of sampling points is carried out using the purpose sampling method. Samples are taken directly in the field, then brought to the laboratory for identification, and the density, abundance of seagrasses and echinoderms, as well as their relationship, are calculated. Water quality measurements indicate a brightness value of 100%, a temperature of 29°C, salinity of 35 ppt, and a pH of 7. The identified biota includes seagrass species, namely C. Rotundata, and Echinodermata species such as T. gratilla, D. setosum, E. calamaris, and A. Typicus. The highest seagrass density recorded is 33.77 individuals/m2, while the lowest is 28.92 individuals/m2. Echinoderm abundance ranges from 0.39 to 0.50 individuals/m2, with a one-way ANOVA indicating a significant difference in echinoderm abundance between stations (0.03). Linear regression analysis suggests that seagrass density influences echinoderm abundance by 11.9%
Keywords: Echinoderms, seagrasses, the relationship seagrasses and echinoderms, and Jati Beach
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