Hasil Pencarian  ::  Simpan CSV :: Kembali

"Synaptidae was one of holothuroidea member, unique because they has no podia or tube feet in their surface of body wall and has no respiratory trees in their internal organ. They has anchor shape spicules in their body wall that supporting locomotory function. Synaptidae were frequently found in the sea grass area, but no publication was specifically observed their existence. This study proposed to observed the species of synaptidae in Sanur Beach-Bali, included their length distribution and their vegetation preference to live with. The observation was conducted twice time using swept survey time based method (one hour) on low tide. The results shows 46 individual of synaptidae consist of two species (Synapta maculata and Opheodesoma grisea) found in the intertidal zone of Sanur Beach-Bali. In the first observation, most of synaptidae had shorter body length then in the second observation. Almost all of synaptidae observed was associated with Enhalus acoroides. Synaptidae in the study area adapt to a very extrem environment. Their adaptation were: 1) osmoregulation to the fluctuation of salinity; 2) wide tolerance of temperature fluctuation; defense mechanism to the wave motion by 3) having sticky skin and 4) autotomy mechanism. "

"Penilia avirostris, Kladosera laut kosmopolitan. Penilia avirorostris adalah salah satu jenis dari delapan jenis Kladosera yang hidup di laut sebagai zooplankton. Walaupun keanekaragaman kladosera sangat rendah di perairan marin, namun distribusi jenis-jenisnya sangat luas mulai dari perairan hangat sampai perairan beriklim sedang (temperate). Penilia avirostris memiliki kemampuan reproduksi secara partenogenesis dan gametogenesis. Ketika kondisi lingkungan mendukung kehidupan (favorable) maka reproduksi dilakukan secara partenogenesis, sebaliknya ketika lingkungan kurang mendukung maka akan bereproduksi secara gametogenesis. Kemampuan beradaptasi yang tinggi terhadap kondisi lingkungan ekstrim dengan cara dormansi atau hibernasi, diduga sangat berpengaruh terhadap semakin luasnya daerah persebaran. "

"Jumlah penemuan bahan baku obat dari sumber daya hayati laut tidak sebanyak di darat. Akhir-akhir ini penemuan bahan baku obat dari sumber daya hayati mengalami peningkatan. Artikel ini memuat beberapa bahan baku obat dari sumber daya hayati laut yang telah memasuki tahap uji klinik maupun pra-klinik. Selain itu, artikel ini juga memuat faktor-faktor yang mempengaruhi peningkatan penemuan bahan obat dari sumber daya hayati laut seperti perkembangan metode produksi senyawa bioaktif, kerjasama antara lembaga penelitian dengan industri, teknologi baru, penemuan senyawa bioaktif dari mikroba laut, dan manipulasi jalur biosintesis senyawa bioaktif."

"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."

"Napoleon fish (Cheilinus undulatus) is one of wrasses that has a high value in the worlds market. This paper present the existence of Napoleon fish of Maratua Island, East Borneo as one of its habitat in Indonesia and current records influencing the social-economic conditions there. The existence of Napoleon fish were detected by GPS (Global Positioning System) using Density Survey Method at six station of three different island i.e. Maratua, Kakaban, and Atol of Karang Muaras. During the observation, four Napoleon fish were found successfully in the northern coastal area of Kakaban Island. Unsustainable fishing activities such as using the potassium cyanide, fish bomb, and illegal fishing suggested as reasons of dramatic declining in the fishery production"

"Laut Flores memiliki dinamika oseanografi secara historis yang disebabkan oleh pergerakan massa air di dalamnya. Pergerakan massa air laut ini dikenal sebagai fenomena upwelling, dimana air bersuhu dingin dan kaya nutrisi dari kedalaman lautan bergerak menuju permukaan laut. Air laut yang bergerak ke permukaan ini membawa nutrien, yang terukur melalui kadar klorofil-a yang dihasilkan oleh fitoplankton di permukaan laut. Upwelling disebabkan oleh transpor Ekman, yakni transpor arus laut yang terbentuk oleh angin yang bertiup di atas permukaan air laut. Dalam penelitian ini, digunakan data anomali suhu permukaan laut (SSTa) dari NOAA AVHRR Pathfinder Version 5.3 Collated Global, data vektor angin permukaan laut (u dan v) dari ERA5 Copernicus, serta data konsentrasi klorofil (chlor-a) dari Ocean Color SMI dengan rentang tahun 1998 Р2023. Analisis spasial dilakukan dengan melihat variasi spasiotemporal klorofil-a, SSTa dan indeks upwelling. Analisis temporal dilakukan secara time series, dekomposisi dan rerata bulanan tiap variabel. Hasil penelitian menunjukkan fenomena upwelling di Laut Flores utamanya disebabkan oleh pergerakan angin arah barat laut pada musim angin muson timur (April-Oktober), ditandai dengan indeks upwelling positif. Pada periode tersebut, upwelling terjadi di Laut Flores bagian utara dekat Sulawesi Selatan. Upwelling kuat tercatat terjadi pada tahun 2004, 2014, 2015, 2019 dan 2020, dimana perisitwa ini dipengaruhi oleh El Ni̱o.

---

The historical of Flores Sea was driven by oceanographic dynamics caused by the movement of water masses within it. This movement of seawater masses is known as the upwelling phenomenon, where cold-temperature, nutrient-rich water from the ocean depths moves towards the sea surface. This surface-moving seawater carries nutrients, which are measured through chlorophyll-a levels produced by phytoplankton at the ocean surface. Upwelling is caused by Ekman transport, which is the transport of water mass formed by wind blowing over the sea surface. This study use the data of sea surface temperature (SSTa) anomaly data from NOAA AVHRR Pathfinder Version 5.3 Collated Global, sea surface wind vector data (u and v) from ERA5 Copernicus, and chlorophyll concentration data (chlor-a) from Ocean Color SMI with time range in 1998 Р2023. Spatial analysis was conducted by analyzing spatiotemporal variations in chlorophyll-a, SSTa and upwelling index. Temporal analysis was done by time series analysis, decomposition and monthly average of each variable. The results showed that the upwelling phenomenon in the Flores Sea is mainly caused by northwest wind movements during the east monsoon season (April РOctober), characterized by a positive upwelling index. During this period, upwelling occurs in the northern Flores Sea near South Sulawesi. Strong upwelling was recorded in 2004, 2014, 2015, 2019 and 2020, where this event was influenced by El Ni̱o."