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"LAMUN SEBAGAI BIOINDIKATOR KONTAMINAN LOGAM. Lamun, kelompok tanaman berbunga unik yang beradaptasi dengan terendam di laut, sangat mempengaruhi sifat fisik, kimia dan biologi dari pesisir dan mempunyai banyak fungsi ekologik. Ekosistem lamun memiliki nilai ekologi penting dengan mendukung biodiversitas dan berperan sebagai zona perawatan bagi ikan komersial dan ikan hias. Lamun yang memiliki fungsi sebagai produsen primer, dapat juga berfungsi sebagai indikator awal untuk monitoring logam berat di kawasan pesisir. Agar dapat memberikan interpretasi data yang akurat dalam menyusun program monitoring menggunakan lamun, sangat penting untuk memahami pola akumulasi dari logam yang berbeda pada tiap organ lamun"

"Flooding or inundation is frequently happenned in Jakarta on the rainy season and during the high tides. This event has lead to the idea of constructing a Giant Seawall (GSW). The pros and cons of this emerging discourse are discussed in this article from the perspective of interests and also based on scientific reasons."

"ABSTRACtBintan is one of the remarkable islands in Indonesia. The fertile soil, the abundant of water sources throughout the year; the various and numerous mineral resources and the beauty that dazzles with white sandy beach are several of the magic. Bauxite is the other magic of the island, since this mineral is the main mine resource of this island. This article explores the huge potency of alumina and the threat of mining activities in Bintan Island, especially in Gunung Kijang District which located in the eastern part of the main island."

"ABSTRACTECOSYSTEM SERVICES. The term of Ecosystem Services (ES) is defined as the benefits that people obtain from ecosystem. ES are divided into four services, namely supporting, regulating, provisioning and cultural. Supporting services are the ecosystem services that are necessary for the production of all other ecosystem. Provisioning services are the products obtained from ecosystems. Regulating services are the benefits obtained from the regulation of ecosystem procceses, while cultural services are the non material benefits that people obtain from ecosystems. This article presents component and analysis ofcoastal ecosystem services."

"ABSTRACTSea grape is a kind of potential seaweeds which is rich of secondary metabolites. Glycoglycerolipid and enol groups are metabolites produced from Caulerpa racemosa. In addition, the diterpenoid compounds, triteipenoids, nitrogen components and caulerpenyne (CYN) are major metabolites of Caulerpa species. Caulerpa racemosa is a source of antioxidants, antimicrobials, cytotoxins, antidiabetic, antimociceptive, and anti inflammatory. This species is also potential as a source of medicinal agents and functional food applications as well."

"ABSTRACTLombok is located between Bali and Sumbawa Island. This island is popular as tourist destination, especially for marine tourism. On the other hand, marine fauna from Lombok is not so popular as their beautiful beaches. One kind of marine fauna is snail, neriti snails are common and easy to find along the beach. T here are twelve species of Nerita snails found in Lombok recently. Nine 0fthem were having their representations in the collections of Museum Zoology Bogor; while the rest three are not yet collected. One of museum collection, Nerita acellata Le Guillou, 1841, is never reported from Lombok before."

"ABSTRACTThe use of reference toxicant in aquatic toxicity testing is a part of efforts to obtain good quality data and it can be justified scientifically. It is used to determine the health and sensitivity of the test on organisms; to compare relative toxicities of substances by using control as an internal standard; to perform interlaboratory calibrations; and to evaluate the reproductive ability on tested data with time. Numbers of substances, such as some metals and salts, can be used as reference toxicants, but basically we must consider certain criterias in using a chemical as a reference toxicant. An ideal reference toxicant is that has a toxic at low concentrations, rapidly lethal, non selective, and detectable by known analytical techniques. The use of each reference toxicant in toxicity tests should be repeated using the same test organism to produce a data set of sensitivity. Endpoint values are then plotted on a control chart with tolerance range 2 SD. The value outside the tolerance range requires the evaluation of all test procedures and conditions of the test organisms."