The Concentration of Chlorophyll-C in the Bottom Sediment of Sea Cucumber Rearing Cage

Abstract

The total chlorophyll-c has been proved as indicator of the occurance of diatom and green algal biomass in sediments. Those chlorophyll-c-containing algae acts as food of sea cucumber reared in the cage. The present study was aimed to examine the total chlorophyll-c in the bottom sediment of sea cucumber Holothuriaatra rearing cage with high stocking density (40 ind.4m-2). The sample of sediments were collected from 0-3 cm surface layer of bottom sediment during Mei-July. The chlorophyll-c were analysed using spectrophotometer. spectrophotometrically. The result showed that the chlorophyll-c concentration in the bottom cage sediment fluctuated, decreased due to activity of sea cucumber feeding on microphytobenthos and increased due to their bioturbation activity.