Ervia Yudiati

TRANSPLANTASI LAMUN Thalassia hemprichii DENGAN METODE JANGKAR DI PERAIRAN TELUK AWUR DAN BANDENGAN, JEPARA

The seagrass bed is a coastal ecosystem which have an important role for the coastal environment. The seagrass beds are vulnerable with changes of water environmental conditions. The decrease of seagrass beds area in the world are the result from environmental stresses both of natural and impact of human activities. Transplantation is one way of to rehabilitate the condition of seagrass beds were damaged. The purpose of this research was to determine the survival rate and the rate of growth of transplanted seagrass Thalassia hemprichii with anchor method at Teluk Awur and Bandengan Waters Jepara. The method used in this research was field experimental method. Determination of sites using purposive random sampling method. The research was conducted at two stations are Teluk Awur Water as Station I and Bandengan Water as Station II. Each station divided into 3 plots of observation. The environmental parameters were taken are: salinity, temperature, current velocity, depth, nitrate, phosphate, dissolved oxygen, organic matter, composition and grain size of the substrate. The results showed that the survival rate of seagrass transplants at Teluk Awur water was higher when compared to the survival rate of seagrass transplants at Bandengan water. The survival rate of seagrass transplants at Teluk Awur water have a range of of 38,89% to 41,67%, while the survival rate of seagrass transplants at Bandengan water have a range of 20,97% to 23,15%. The average range growth rate of seagrass transplants at Teluk Awur water was 0,13 cm/day to 0,16 cm/day, while the average range growth rate of seagrass transplants at Bandengan water was 0.16 cm/day up to 0.17 cm/day.PO Box 208118, New Haven, CT 06520-8118 USA (203) 432-3154 fax (203) 432-5872 jmr@yale.edu www.journalofmarineresearch.org The Journal of Marine Research is an online peer-reviewed journal that publishes original research on a broad array of topics in physical, biological, and chemical oceanography. In publication since 1937, it is one of the oldest journals in American marine science and occupies a unique niche within the ocean sciences, with a rich tradition and distinguished history as part of the Sears Foundation for Marine Research at Yale University.

Exploration of Sea Cucumbers Stichopus hermanii from Karimunjawa Islands as Production of Marine Biological Resources

This research aim was to study the potential of Stichopus hermanii to determine the amino acid, chondroitin, and glucosamine contents, to discover its antibacterial and anti-cancer agent. The samples were rinsed prior to separation, with only the corpus being used in the study. Sea cucumber extract was then processed using HPLC to trace contents of amino acid, chondroitin, and glucosamine contents. The samples were then put into test against several strains of pathogenic bacteria by means of diffusion for any biological activity. The anti-cancer test was performed by human ovarian cancer cell line (KOC7C) method. The study showed that the extract of Stichopus hermanii has the potency to inhibit the growth of active ovarian cancer cells. The qualitative test of the sea cucumber extract showed that it is capable of suppressing the growth of several strains of pathogenic bacteria identified as Staphylococcus aureus, Escherichia coli, Vibrio voinivica, and Pseudomonas sp. HPLC results showed that the extract contained amino acid (mg/100g), the highest being Collagen (11200), followed by Glycine (3760), Glutamic Acid (3700), Aspartic Acid (2540), Alanine (2140), Proline (2050), Arginine (2050), Tyrosine (1430), Threonine (1270), Leucine (1170), Valine (1050), Serine (971), Isoleucine (816), Phenylalanine (713), Lysine (639), Methionine (383), Cystine (263) and Histidine (208). The extract also contained Chondroitin Sulfate (4200) and Glucosamine