Pengaruh Lama Peletakan Substrat Kolektor Terhadap Rekruitmen Jenis Karang Di Daerah Pantai Saleo, Selat Dampier, Kabupaten Raja Ampat

Abstract

The limitation of the substrate for the recruitment of coral species at the Saleo beach study site is limited due to historic destructive practices such as fishing using bombs and the increase of fault cover in particular between 2016 and 2017. This research was conducted for 6 months using the Coral Recruitment Tile method. This method uses an artificial substrate for coral placement at 5-7 meter with slope of substrate. The substrate will be removed every two, four and six months after placement to identify the type of coral attached. The purpose of the study was to analyze the influence of the substrate types and its placement, duration, diversity of attached coral species. The results indicated that coral recruitments were the genus Pocillopora, Porites, Seriatopora, Montipora, Stylophora and Goniastrea. The highest coral abundance was genus Pocillopora with a value of 8 ind. (38.10%) while Stylophora and Goniastrea were the least with 1 ind. (4,76%) each. Species diversity is classified as moderate with a value of 1.5. The analysis showed that the placement duration of the tiles in ocean influences the recruitment of coral species (<0.05), whereas the type of substrate used did not significantly influence the recruitment of coral genus (>0.05). The placement of substrate for a long time would facilitate new settlements from the reproduction of coral species.