Diversity of sea cucumber from intertidal area of Pacitan and Bangkalan, East Java, Indonesia

ELSA DIANITA AULIA (Marine Ecology and Conservation Research Group, Ecology Laboratory, Department of Biology, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember. Jl. Raya ITS, Surabaya 60111, East Java, Indonesia)
FARID KAMAL MUZAKI (Marine Ecology and Conservation Research Group, Ecology Laboratory, Department of Biology, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember. Jl. Raya ITS, Surabaya 60111, East Java, Indonesia)
DIAN SAPTARINI (Marine Ecology and Conservation Research Group, Ecology Laboratory, Department of Biology, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember. Jl. Raya ITS, Surabaya 60111, East Java, Indonesia)
EDWIN SETIAWAN (Zoology and Animal Engineering Laboratory, Department of Biology, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember. Jl. Raya ITS, Surabaya 60111, East Java, Indonesia)
DAVIN SETIAMARGA (Zoology and Animal Engineering Laboratory, Department of Biology, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember. Jl. Raya ITS, Surabaya 60111, East Java, Indonesia)
ISWATUL DIAH LUTVIANTI (Marine Ecology and Conservation Research Group, Ecology Laboratory, Department of Biology, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember. Jl. Raya ITS, Surabaya 60111, East Java, Indonesia)
SANIAH KUSNATUR ROSYIDAH (Marine Ecology and Conservation Research Group, Ecology Laboratory, Department of Biology, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember. Jl. Raya ITS, Surabaya 60111, East Java, Indonesia)
NUR ALI MUHAMMAD (Marine Ecology and Conservation Research Group, Ecology Laboratory, Department of Biology, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember. Jl. Raya ITS, Surabaya 60111, East Java, Indonesia)

Biodiversitas Journal of Biological Diversity
Vol. 22 No. 4 (2021)

Abstract. Aulia ED, Muzaki FK, Saptarini D, Setiawan E, Setiamarga D, Lutvianti ID, Rosyidah SK, Muhammad NA. 2021. Diversity of sea cucumber from intertidal area of Pacitan and Bangkalan, East Java, Indonesia. Biodiversitas 22: 2136-2141. Sea cucumbers have an important role in the regeneration and mineralization processes of marine sediments. They are echinoderm, and their existence influences the sustainability of other organisms in different types of marine ecosystems. The objective of the present study was to determine the diversity of sea cucumber at Tawang and Pidakan coasts in Pacitan, and Labuhan coast in Bangkalan with slight differences in habitat characteristics. Sampling was conducted from 1000 m2 marked plots using hand collecting during low tide. Species richness, composition, abundance, and diversity indexes such as Shannon-Wiener’s diversity index (H’), Simpson’s dominance index (D) and Pielou’s evenness index (J) were observed. The results showed that there were 19 species found in this study, which belonged to family Stichopodidae, Holothuruidea, and Synaptidae. The highest species richness, abundance, H’ and J value was from Tawang coast. Value of H’ was 2.620 in Tawang, followed by 2.001 in Pidakan, and 1.621 in Labuhan. The highest D index was at Labuhan coast (0.223) compared with Tawang (0.085) and Pidakan (0.158) coast.