PLANKTON ABUNDANCE BETWEEN DRY AND RAINY SEASON IN TALLO FRESHWATER AND PANGKEP RIVER

Plankton abundance is influenced by seasons, sea surface currents (SSC), nutrients and surface temperature (SST). Is a marine organism has a function to stabilize the surface temperature of the earth by regulating the concentration of Dimetyl sulfide (DMS) due to exposure to direct sunlight. There is the ability of the ocean to regulate warming and to regulate the distribution of water vapor in the atmosphere which is controlled by sea surface temperature. Sampling using the transeck system in September and January represents the rainy season and the dry season which is closest to the Tallo river estuary and the Pangkep river estuary represents the estuary region, towards the coast of the spermonde (Litoral) islands and far from the coast (offshore) from freshwater sources, but the relationship of nutrient entry into estuary areas by sea surface currents (SSC) is still poorly known. The dominant aspect of phytoplankton is determined by the amount of nutrients flowing (runoff) from land to estuary to spermonde water

THE EXISTENCE OF PLASTIC WASTE MANAGEMENT IN THE SEA ENVIRONMENT SEEN FROM CHEMICAL SCIENCE ANGLE

Plastic waste from year to year in the marine environment continues to increase. This is due to its wide application and its resistance to degradation making it difficult or impossible to decompose. Plastic waste has been found in various sizes and accumulated in the body of marine life. The existence of plastic waste in the body of the marine biota even causes death. This review discusses the latest advances in research and development of methods for handling plastic waste in the marine environment

ASSESSMENT OF MICRONUTRIENT (Fe, Cu AND Mn) CONCENTRATIONS IN SOIL FROM CACAO PLANTATION COASTAL AREAS, EAST LUWU REGENCY

Micronutrients Fe, Cu and Mn, despite being required in only small amount, have an important role in cacao plant metabolism. This study aims to assess of micronutrient (Fe, Cu and Mn) concentrations in soil from cacao plantation coastal areas, East Luwu Regency. Availability of micronutrient (Fe, Cu and Mn) were analyzed by dry ash method and measured with Inductively Coupled Plasma (ICP). The results showed that Iron (Fe) was represented in large quantities (788.80 mg/100 g). Copper (Cu) and Manganase (Mn) were represented in small quantities 21.65, and 4.34 mg/100 g, respectively

DETERMINATION OF KOH EFFICIENCY AS CARBOSORB IN DETERMINING AGE OF CORAL REEF SAMPLES IN SELAYAR ISLANDS THROUGH LSC METHOD (LIQUID SCINTILLATION COUNTING)

Research using the method of LSC (Liquid Scintillation Carbon) in determining the age of coral reefs in the Selayar islands has been carried out. The samples of coral reefs were taken between the tides. Sample preparation was carried out physically and chemically using an acid-base mixture solution: NaOH, H2O2, HClO4 and HCl produced coral samples that looked whiter with weight reduction of up to 1.6%. Carbonate is separated into CO2 by reaction with 10% HCl and absorption with KOH 1 M as K2CO3. Total carbon is determined by the titration method which produces 0.0542 g of total carbon sample. Specific activity of 14C measured by enumeration with LSC is 12.0542 DPM/gC. The age of coral reef samples obtained from sample specific activity data was 1971,728 year

EVALUATION OF THE BRINE PRESERVATION METHOD OF SEA GRAPES (Caulerpa lentillifera) AS A COMMERCIAL PRODUCT

The aim of this study is to evaluate this commercial product in relation to the preservation materials, the preserved product biomass, individual weight and length of the fronds, and the effect of soaking time and water temperatures on the frond “crispiness”. There was no significant difference between different soaking times (from 30s to 2 minutes) on the weight and the length of the fronds ANOVA (p=0.88) and (p=0.81) after the initial period. Furthermore, tap water and ice water treatments during rehydration process had no significant effect on the fronds crispiness (ANOVA p=0.560). These results show that the preserved product using high concentration of brine produces a product with consistent biomass, size, and amount of the fronds. However, the temperature of the freshwater used in rehydration has no effect on the quality of the product, in contrast to the claims made by the company on the packaging instruction

CHARACTERIZATION OF SEA GRAPES (Caulerpa lentillifera) FROM VIETNAMESE COMPANY’S PRODUCTS

Species of sea grapes (Caulerpa spp.) are consumed broadly in many regions such as in Southeast Asia and Pacific areas. However, it damages easily if packed incorrectly and may only last for couple of days. A company in Vietnam (Tritin Pty Ltd) has developed a preservation technique for sea grapes that enables export to many countries. The aim of this study is to characterization of the Vietnamese company’s product of Caulerpa. The study found that the product based on a 10% brine concentration (114.33 g/L ±2.30 SD). The average weight of each sachet package is 22.47 g ±0.37 containing 65 fronds of Caulerpa lentillifera. The average weight and length of the fronds is 0.73 g ±2.30 SD and 7.27 cm ±1.59 SD. There was a significant relationship between the weight and the length of the fronds during the rehydration process in freshwater (R2=0.35, p<0.01), with rehydration of weight and length complete after x second

DETERMINATION OF AGE OF CORAL REEFS ON PANIKIANG ISLAND, BARRU DISTRICT, SPERMONDE ISLANDS THROUGH MEASUREMENT ACTIVITY 14C USING LSC (LIQUID SCINTILLATION COUNTING) METHOD

Determination Of Age Of Coral Reefs On Panikiang Island, Barru District, Spermonde Islands Through Measurement Activity 14C Using LSC (Liquid Scintillation Counting) Method. This research was using a sample of coral reefs taken from the Panikiang Island, Barru, Spermonde Islands. This research has been carried out by using sample preparation with physic and chemical. Sample preparation was done physically and chemically. Chemical preparation was carried out by using a mixture of NaOH with 30% H2O2 followed by a mixture of HClO4 with 30% H2O2, and finally with HCl solution to produce a clean sample with a weight reduction of 7.94%. Absorption of CO2 through reaction with HCl 10% and NH4OH as Carbosorb .produced K2CO3. The total carbon in the sample solution is 0.2496 gram sobtained through titration method.  Radiocarbon dating method based on the measurement of the specific activity of the samples obtained from the results of counts LSC (Liquid Scintilation Counter) Hidex 300 SL.The specific activity of coral sample is 14.68 ± 4.04 DPM/gC. Age of coral sample which were calculated from the specific activity were 342.04 ± 37.66 years

CHARACTERISTICS AND SEDIMENT DISTRIBUTION OF COASTAL MAMUJU DISTRICT

This study aims to determine the basic sedimentary profile and distribution of TSS in the coastal areas of Mamuju Regency. The research method used a case study with data collection using field survey tec hniques and sample testing in the laboratory. The data was then analyzed descriptively using tabulation techniques and making sediment distribution maps. The results showed that sediment at the study site was dominated by coarse sand with a total organic matter content (BOT) of 1.59 mg / L which was still below the quality standard (<10 mg / L) but the TSS concentration at water bodies of 26.80 mg / L have passed the quality standard for coral reef and seagrass ecosystems (20 mg / L

MICRONUTRIENTS (Fe, Cu, Zn) IN CACAO BEANS FROM COASTAL AREA OF EAST LUWU REGENCY

Cacao is an excellent essential minerals source. Cacao is a raw material for various products with rich mineral content to fulfill the nutritional requirements of human body, both for children and adults. Micronutrients of sufficient quantities greatly determines the nutritional quality of the food. Micronutrients content that in the body functions as a cofactor for certain enzymes involved in metabolism . This study aims to find out the micronutrients content in cacao beans from 5 location points and its potential to be utilized as food products raw material which meet the body nutritional requirement. This study  will be conducted at 5 locations point. Methods of analysis  used digestion and Inductively Coupled Plasma. Study findings that micronutrients content in cacao beans from 5 location points  were: copper (Cu), iron (Fe), and zinc (Zn) at average 2.316 mg/100g, 3.99 mg/100g, and  5.917 mg/100g, respectively

DETERMINATION OF THE AGE OF SAMALONA ISLAND CORAL REEF THROUGH C-14 ACTIVITY USING LSC METHOD (LIQUID SCINTILLATION COUNTIN

Analysis of 14C on samples of coral reefs on the Samalona Spermonde Islands vessel through 14C activity measurements using the LSC (Liquid Scintillation Counting) method was carried out. The preparation sample is carried out physically and chemically. Preparation of coral reefs with chemicals using a mixture of 1N NaOH and 30% H2O2 processed with a mixture of 1% HClO4 and 30% H2O2 and finally with 10% HCl to produce a clean sample by adding a weight of 5.36%. Carbonate separation was carried out using KOH as a carbosorb to produce K2CO3 solution. The total carbon is determined by the titration method which produces a total carbon of 0.9984 g. Measurement of 14C activity is done using LSC Hidex 300 SL. Specific activities of coral reef samples obtained were 15.06 ± 3.3613 DPM/gC. Age of coral samples on the island of Samalona in the Spermonde Islands was 130,343 ± 18.4 years