SAND DOLLARS DISTRIBUTION PATTERN AND ABUNDANCE AT THE COAST OF CEMARA KECIL ISLAND, KARIMUNJAWA, JEPARA, INDONESIA
DOI:
https://doi.org/10.11113/jt.v78.8215Keywords:
Abundance, sand dollars [Clypeaster subdepressus(Gray, 1840)], spatial distribution patternAbstract
This research is aimed to know the distribution patterns and abundance of sand dollars [Clypeaster subdepressus (Gray, 1840)] at different spatial distances from the coast of Cemara Kecil Island Karimunjawa, Indonesia. The data were collected using purposive sampling and analyzed using cluster analysis PAST-3. The results indicate that the abundance of sand dollar amounts to 2 200 individuals, and the existing species are Laganum centrale, L. laganum, L. fudsiyama, L. depressum, L. retinens, L. boschi, L. depressum tonganense, L dickersoni, L. decagonale rectum, L. joubini and L. decagonale. The cluster analysis using PAST-3 reveals that there are clumped distributions and uniform distributions of L. centrale and Laganum laganum. At a distance of 23 m to 38 m from the coastline the animals form clumped distributions.
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