SEA CUCUMBER ECOLOGY HOLOTHUROIDEA STUDIES IN THE SANCANG MARINE PRESERVE A Rohayat, S Destiani, S Nurjaman, C Ardiana and I Nawawi
Prodi Pendidikan Biologi, Institut Pendidikan Indonesia Garut
Abstract
This research is titled: Sea Cucumber Ecology Holothuroidea Studies in The Sancang Marine Preserve. Aims to analyze the kelp, diversity, evenness, dominance, food charateristics, habitat and physical and chemical parameters of Holothuroidea in the Sancang marine preserve. The method used in this research is descriptive method with sampling method using purposive sampling, the method is assisted by using the help of lie transects, quadratic transect to help analyze the ecology of Holothuroidea. The population in the study was 920 meters, samples were taken 276 meters from the population. Sampling is done dividing the study area into three observation stations. Each statio is divided into three observation points. Station I, II, III, each placed with squares of sample size 1x1 meters totaling 30 samples. Based on field observations, Holothuroidea species exiting in the Cikabodasan Sancang beach there are found as many as 3 species including : Holothuria atra, Holothuria leucospilota and Holothuria scabra. Based on the results of the analysis of the Holothuroidea ecological index calculation at the Cikabodasan Sancang beach, the index value is obtained as follows: abudance index namely Holothuria atra dan Holothuria scabra 16% which shows the abudance index according to adequate category, whereas in Holothuria leucospilota shows that the abudance index is in the very many categories, the diversity index ranges from 0,9 to 0,13 which shows that diversity is in the low category, Evennes indx ranges from 0,75-1,00 which shows that evenness of Holothuroidea is spread and the equity is in a stable
condition, the dominance index ranges from 0,02 to 0,53 which shows that there are no dominant species . Food characteristics in the sea cucumber’s stomach are detritus, algae litter, and decapoda. Substrate in the Holothuroidea environmental habitat, namely at station I rough sand, station II medium sand, station III fine sand. The results of the analysis of the measurement of the physical and chemical parameters of the waters show that these values are still within the range of normal and stable conditions so that they support the life of sea cucumbers (Holothuroidea).
Keywords: Ecology index, Holothuroidea, CAL Sancang
