Recruitment of crustose coralline algae on tiles material for monitoring coral larvae settlement’s consolidators at Nature Reserve Pulau Sempu, East Java, Indonesia

Abstract

Crustose coralline algae (Corallinophycideae) are red algae that produced calcium carbonate and are well recognized as foundation species in the epipelagic zone of the marine ecosystem. These algae induced settlement juvenile of coral by released chemical cues from bacterial communities on the surface of their colonies. Their extracellular calcium carbonate also can stabilize reef structure that influencing many invertebrate attaches and growth in the seabed. Crustose coralline algae (CCA) have obtained attention because of their distribution and health compromise to increasing seawater temperature, ocean acidification, and pollutant. As a cryptic species in the ecosystem, the presence of CCA recruit sometimes doesn’t have attention, especially on their capability to occupy the empty space. This study aimed to document coverage and number of CCA recruit in two different recruitment tile’s material. The highest CCA percentage of the cover was showed inside surface than others surface in all stations. Light intensity and low sedimentation were suggested as a key factor of success of high coverage. Overall, station higher CCA recruits have shown from Tiga Warna. Low sedimentation and protection from aerial exposure became the main reason for it. No significant difference number of CCA recruits between marble and sandstone in this study. Successful CCA recruitment in this study can give a wide picture that natural recruitment of coral and other reef biodiversity in Southern Malang might be will succeed because of the abundance of coralline algae that support their life history stage.

Pertumbuhan Crustose Coralline Algae (CCA) pada Substrat Keramik dengan Komposisi dan Jenis Material Penyusun yang Berbeda

“…Hasil dokumentasi kemudian dianalisa melalui ukuran pixel yang dibandingkan dengan ukuran acuan menggunakan software Image-J (Kurniawan et al, 2011). Luas tutupan CCA pada substrat keramik dihitung menggunakan persamaan (3) (Guntur et al, 2023).…”

Genetic Differentiation of Five Sea Cucumber Species from the Red Sea, Hurghada, Egypt

“…Many marine invertebrates, particularly those that are sessile or move slowly, are rich sources of bioactive metabolites (Jiménez, 2018;Luthfi and Asadi, 2021). In Asia and the Middle East, people traditionally use marine invertebrates, such as sea cucumbers in holothurians, as food and folk medicine (Bordbar et al, 2011).…”