Revealing Hidden Diversity in Menjangan Besar Island, Karimunjawa: Reef-Associated Decapods as a Proxy of Biodiversity Estimation
Abstract: The Indonesian
archipelago, with its higher number of Marine Protected Areas (MPA) and
National Parks, is a home to a high diversity of marine organisms. Karimunjawa
is an Indonesian National Park that is well known for its diverse coral reefs
and therefore is an important place to study marine biodiversity. In the
present study, the biodiversity of reef organisms was estimated in the coastal
marine habitat of Karimunjawa. A semi-quantitative sampling method was used to
estimate reef biodiversity using decapod group as a representative. Sixteen
similar sized dead coral heads of Pocillopora were sampled from 10 m depth at
Menjangan Besar Island, Karimunjawa. All decapods were sorted and identified to
the family level, yielding 11 families from total 203-collected individuals.
Species richness statistics (Chao1 and ACE) suggest that only 11 families of
decapods can be found in this area. Rarefaction curves approached an asymptote
after sampling fourteen heads, indicated that sample addition will not alter
the estimate diversity found in this location with Shanon-Wiener diversity
index of 1.9 indicated low diversity. Our findings may provide a basic
understanding of the overall biodiversity of a reef area and a basic knowledge
in monitoring coral reefs ecosystems for protection and conservation.
Penulis: Ni Putu Dian Pertiwi,
Eka Maya Kurniasih, Sukron Alfi Rintiantoto, Gede Wahyu Dani Dharmawan, Teuku
Rizza Mustari, Fitriani Basuki, Ni Kadek Dita Cahyani
Journal Code: jpperikanangg140017
