DISTRIBUTION OF CTENACTIC ECHINATA AND FUNGIA CONSINNA CORAL On MAMBURIT ISLAND, SUMENEP REGENCY, EAST JAVA
Description
Coral fungiidae are known as solitary corals whose life is clustered and attached to a hard substrate. Fungiidae coral have an important role in invertebrates. This study aims to calculate the distribution of Ctenactis echinata and Fungia consinna from fungiidae families on Mamburit Island. Sampling was done in July 2017 using a transect belt with a length of 10 meters and a width of 1 meter then recording all the individuals. The results have found types: Ctenactis echinata, leeward location 1, 1.1064, windward 1, 1.061, leeward 2, 0.886 windward 2, 0.643, while Fungia consinna is found in location, leeward 1, 0.984. Windward 1, 1.03, leeward 2, 1.018. windward 2, 0.667. Indonesia has a very high distribution of coral species and has 77 genera (Veron et al. 2011). Many coral fungiidae call it mushroom coral and are classified into fungiidae families, while according Hoeksama (1992) is one of 18 families while the number of species is approximately 41 which are found in the Indo Pacific. Ctenactis echinata and Fungia consinna are also fungiidae family found on reef slopes which have coral fracture substrate (Hoeksema 2012), when it is juveniles are attached to a hard substrate and will release themselves when 1cm ( Yamashiro and Yamazoto 1997). Mushroom corals are very unique species because they have unique characteristics, mushroom corals have a role as habitat for organisms in the sea, among others: crab shrimp, fish, worms etc. (Hoeksam et al 2012.) Pulau mamburit mempunyai terumbu karang yang cukup luas dan memiliki 11 spesies karang jamur yang berasal dari 6 genera (sawiya et al.217). Mamburit Island are located on the east of Madura Island and included the Arjasa sub-district, Sumenep regency East Java which has an area of 3.536.2 ha of coral reefs (Muhsoni 2011). Damage to coral reefs turn into coral fragments will make the growth of coral fungiidae because it is need a hard and suitable substrate and depends on environmental parameters that can make coral growth
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Steps to reproduce
The study was conducted in July 2017 on the island of Mamburit, Sumenep Regency (Figure 1). Observations were carried out IV locations where each location consisting of 4 locations, each of which consisted of 6 points so that the total data collection was 24 points, the method used was belt transect method.Belt transects are used to describe the population of coral type that has a relatively varied size. This method can be used to determine the presence of ornamental coral (number of colonies, largest diameter, type) in an area of coral reef ecosystem, the transect length used is 10 m and a width of 1 m, then recording was done on all individuals who are the research objectives in the transect area ( Eleftheriou & Mclntyre, 2005) and (Suharsono, 2008). The equipment used includes: Boat, Complete diving equipment, Camera under water, roller meter, Thermometer, Refractometer, Stationery, guess ball. study location was determined using the Global positioning system (GPS). Retrieval of data in the field will be carried out from the morning until the afternoon. Analysis of fungiidae coral fatigue is analyzed according to Elliot (1983) that we can see below. Distribution: 1ᵹ = n Σx²-Σx (Σx)²-Σx Where: 1ᵹ = distribution of species N = Total number of quadrants x = jumlah individu per spesies pada setiap kuadran to determine the significance of 1ᵹ ≠ 1, the calculation according to Cox (1967) in Krebs (1989) is used as follows: x² = 1ᵹ (Σx-1)+n-Σx if : 1ᵹ = 1, distribution of the species is random 1ᵹ >1, distribution of these species is grouped 1ᵹ <1, distribution of the species is same