Abstract
Echinoderm is one of the phylum which has high diversity and abundance in Indonesia, especially in Gunung Kidul, Yogyakarta. Sadranan and Slili beach are side by side beach located in Gunung Kidul. This beach is dominated by coral and rocky coral with macroalgae that provide the habitat of Echinoderms. This research is conducted to study the abundance and distribution pattern of Echinoderms in the intertidal zone between Sadranan and Slili beach. Sampling was carried out on Friday, 4 October 2019 at 05.00 p.m. in the intertidal zone using quadrat plot methods. The beach area is 2240 m2 which is divided into 21 plots with 1 x 1 m size. Data analysis was performed by measuring Margalef index (D), Pielou index (e), and Shannon-Wiener index (H’) then analyzing the distribution pattern and habitat parameters. The result shows that the Echinoderms which has the highest abundance is Echinometra mathei with 19 individual founds. The distribution pattern of Echinometra mathei, Stomopneustes variolaris, Heterocentrotus trigonarius, Ophiocoma erinaceus, Macrophiotrix longipeda, Ophiomastix annulosa, and Echinus sp. is clumped. The distribution pattern of Tripneustes gratilla, Diadema antillarum, Echinotrix calamaris, and Ophiocoma scolopendrina is uniform
Highlights
Indonesia is one of the countries with high biodiversity, including the marine biodiversity
This research was conducted to find out the Echinoderms abundance in Sadranan and Slili Beach, Gunung Kidul, Yogyakarta
The research was conducted in the intertidal zone of Slili and Sadranan Beach, Gunung Kidul, Yogyakarta, Indonesia at October 4th 2019 at 05.00 a.m. at Sadranan and Slili beach is located in Ngestirejo, Tanjungsari, Gunung Kidul, Yogyakarta
Summary
Indonesia is one of the countries with high biodiversity, including the marine biodiversity. An example of the abundant marine life found in Indonesia is a member of phylum Echinodermata. Echinodermata is a group of marine invertebrates that have spines attached on the surface of the body. Echinoderms consist of 5 classes, including Crinoidea, Asteroidea, Ophiuroidea, Echinoidea, and, Holothuroidea (Llacuna et al, 2016). Its body parts consist of a central disk with several arm attached on it. Each species has a specific habitat, for example Asteroidea which is often found in corals, rocky, sandy seagrass substrates, and deep sea to a depth of 6000 meter (Pourvali et al, 2014). Sadranan Beach is one of the beaches in Gunung Kidul Regency, Yogyakarta which has a marine biodiversity. This research was conducted to find out the Echinoderms abundance in Sadranan and Slili Beach, Gunung Kidul, Yogyakarta
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