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Teluk Jakarta merupakan perairan yang memiliki nilai ekonomis yang sangat tinggi karena posisinya yang berada di Ibu Kota Indonesia namum perairan ini juga memiliki beban masukan yang tinggi mulai dari kegiatan domestik, industri, ataupun pertanian dari 13 muara sungai di sekitarnya yang berasal dari wilayah Jakarta, Bogor, Tangerang, dan Bekasi sehingga dapat memberikan dampak terhadap kelimpahan klorofil-a. Permasalahan kini muncul karena konsentrasi total material tersuspensi yang melebihi daya dukung perairan mendorong produktifitas seperti plankton untuk berkumpul dan tumbuh dengan sangat cepat sehingga menyebabkan eutrofikasi. Atas dasar tersebut, peneliti melakukan penelitian di Teluk Jakarta dengan tujuan : (1) Menganalisis hubungan Total Suspended Matter (TSM) dan klorofil-a case 2 (CHL2), (2) Menganalisis hubungan parameter fisik kelautan terhadap kesuburan di teluk Jakarta, serta (3) Mensintesis hubungan seluruh variabel penelitian terhadap kesuburan. Data yang digunakan adalah data bulanan dari seluruh data dari sensor OLCI-A yang tersedia di GlobColour Project yaitu bulan April 2016 - Desember 2018. Seluruh data diolah menggunakan metode SIG  secara time series untuk mengetahui karakter masing masing variabel terutama terkait pada bulan angin muson. Selanjutnya digunakan analisa regresi linear, uji-F, dan uji-T untuk mengetahui hubungan terhadap variabel penelitian. Hasil yang diperoleh antara lain terdapat  hubungan yang sangat kuat antara TSM dan CHL2 dengan nilai R = 0,905 dan nilai P= 0,000 < 0,05, parameter kelautan yang dominan terhadap kesuburan adalah parameter arus laut terutama pada musim barat, variabel penelitian dengan variansi searah kuat yaitu CHL2 dengan TSM dan arus laut, variansi berkebalikan kuat dengan curah hujan dan temperatur.

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Jakarta bay is a water that have high economic value because of its position in the Indonesian capital city, but these water also have a  high input load due to domestic, industrial, or agricultural activities from the surrounding river estuaries comes from Jakarta, Bogor, Tangerang, and Bekasi regions that can have an impact on the high concentration of chlorophyll-a. The problem comes when the concentration of TSM exceeds the carrying capacity of the water thus encouraging plankton to grow and develop rapidly so it can cause eutrophication . Based on this, the author conducted research in the Jakarta bay with the following objectives: (1) Analyzing the relationship of TSM and Chlorophyll-a Case 2 (CHL2), (2) Analyzing the relationship of marine physical parameter to productivity in Jakarta bay, and (3) Synthesize the relationship of all data variables to productivity. Data collection was conducted in April 2016 – December 2018 using monthly data from OLCI-A sensors available at GlobColour project. All data were processed using the GIS and time series method to determine the character of each variable, especially related to Monsoon. Furhermore, linear regression analysis, F-Test and T-Testwere used to determine the relationship to the research variables. The result obtaineda very strong relationship between TSM and CHL2 with R value 0,905 and P value 0,000<0,05, in the marine physical parameters, the dominant parameter was sea current that distribute productivity. Research variables that have a strong relationship were CHL2 with TSM, current velocity, rainfall, and temperature.

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"Detects the sound frequency range of fish, the intensity of the sound amplitude, sound fluctuations, and shape the sound patterns of the fish. Passive acoustic methods used to monitor marine mammals expressed. In general, the signal obtained from the animal record sounds is poor and difficult to determine from which directions it is produced, therefore it requires that require amplification strengthening. Bioacoustic research is needed to identifies the communication language (Acoustic communication) in mammals. Bioacoustic detect mammal produced frequency ranges of sound, amplitude intensity of sound, voice fluctuation, and form sound patterns of mammals. Studying bioacoustic is inseparable from the science of underwater acoustics, biology of mammals, and the study of mammalian behavior: Generally bioacoustic include physiology of mammals organ that produce sound, earning voice mechanism, sound characteristics of mammals, mammals sound approaching mechanism, the hearing capacity of fish, and the evolution of the auditory system, and to obtain the fequency range of each sound produced by the dolphins (mammals). Environmental conditions and parameters (salinity and temperature) will greatly affect the value of the intensity and frequently generated the target, the more extreme the environmental conditions, the lower value of the intensity and frequency generated."

"Penelitian ini menggunakan teknik penginderaan jauh dengan tujuan untuk : (1) memetakan daerah budidaya rumput laut yang terinfestasi mikroflora epifit dengan menggunakan data ALOS AVNIR-2 dan spectral signature in situ; (2) memetakan zona potensi retensi menggunakan data AQUA MODIS melalui analisa kesesuaian lahan (site selection) untuk budidaya rumput laut. Metode yang digunakan dalam analisis spektral ALOS AVNIR-2 adalah identifikasi berdasarkan spectral signature in situ yang diolah di MESMA VIPER TOOLS pada ENVI 4.8 dan analisis spasial menggunakan syarat kesesuaian lahan untuk Eucheuma cottonii dengan metode composite dan overlay pada Arcmap 10. Analisis spektral menunjukkan pola pada kanal biru (panjang gelombang 460 nm) reflektasinya sangat rendah, kanal hijau (panjang gelombang 560 nm) reflektasinya sedikit meningkat, kanal merah (panjang gelombang 650 nm) sedikit meningkat sedangkan pada kanal near infrared menunjukkan reflektasi yang cukup tinggi. Pola spectral signature ini menyerupai pola spectral signature Eucheuma cottonii dari Kabupaten Jeneponto (Hendiarti, dkk., 2012) tetapi terdapat sedikit perbedaan yaitu pada spectral signature Eucheuma cottonii terinfestasi memiliki pola yang kurang halus dibandingkan dengan spectral signature Eucheuma cottonii dari Kabupaten Jeneponto. Analisis spektral ALOS AVNIR-2 dapat memetakannya potensi retensi infestasi mikroflora epifit kurang lebih seluas 4,81 ha di Desa Legundi dan 48,345 ha di Desa Sumur. Analisis spasial menunjukkan hasil bahwa di perairan Provinsi Lampung potensi retensi terinfestasi mikroflora epifit ini seluas 3.677.191,34 ha (daerah yang berpotensi), 893.919,40 ha (cukup berpotensi) dan 175.888,44 ha (tidak berpotensi). Apabila dibandingkan dengan kualitas perairan pada tahun 2007 (pada tahun ini produksi sangat tinggi) terjadi peningkatan luasan untuk daerah yang berpotensi.

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This study used remote sensing technical, it aims to: (1) mapping the seaweed cultivation areas infested epiphytic microflora using the ALOS AVNIR-2 data and in situ spectral signatures; (2) mapping the area of potential retention through the use of AQUA MODIS data and site selection analysis for seaweed cultivation.The method using spectral analysis of ALOS AVNIR-2 with reference spectral identification derived from in situ spectral signatures processed in MESMA VIPER TOOLS in ENVI 4.8. It also conducted a spatial analysis of land used site selection for Eucheuma cottonii with the overlay method in Arcmap 10. This study showed through in situ spectral signatures measurements obtained the pattern on a blue canal (460 nm wavelength) with very low reflectation, the green canal (560 nm wavelength) slightly increased reflectation, the red canal (wavelength 650 nm) slightly increased, while the band near infrared is showed with high enough reflectation. This spectral signature pattern similar to the pattern of spectral signatures of Eucheuma cottonii Jeneponto (Hendiarti et al, 2012) but there is little difference in the spectral signature of Eucheuma cottonii infested pattern smoother than the spectral signature of Eucheuma cottonii Jeneponto. Spectral analysis of ALOS AVNIR-2 with reference to the spectral signature is mapping Eucheuma cottonii that can more or less infested area of 4.81 ha in the Legundi village and 48.345 ha in the Sumur village. Spatial analysis showed that in Lampung potential retention area infested 3.677.191,34 ha (potentially area), 893,919.40 ha (potentially enough) and 175,888.44 ha (not potential). Compared to the water quality in 2007 (the year of production was very high) occurred the increasing of the extent to potential areas."

"ABSTRACTThe increase in research activities in recent years has generated a lot of data to be analysed. Research related communities need powerful software to perform their analyses, which can be a problem. particularly for those who live in developing countries, where the proprietary programs are often unaffordable. R may provide a solution, since it is open source software which can be installed on major operating systems. In addition, it is well maintained by the R Core Team, which ensures that the program and its packages work across platforms. The increasing usage of R, especially in universities, is not only proof that the program can be relied on, but it is also a guarantee that the software will continue developing. R and its capability, particularly for ecological research activities, will be described in this short note."

"ABSTRACTAmphipods inhabit many marine benthic habitats and have an important ecological role. However, there is a lack of information about Indonesian amphipod diversity and distribution, especially in the shallow subtidal sediments of Probolinggo and Tangerang. During the transition to the monsoon season in September 2014, eight subtidal stations were sampled in Bayeman (Probolinggo) on East Java and seven subtidal stations were sampled in Kramat Kebo (Tangerang) in West Java. A total of 7346 amphipods individuals were collected, comprising flve genera. Genus Photis was the most abundant group, followed by Grandidierella and Synchelidium. Multivariate analyses of these data indicated that sampling location and sediment granulometry were major determinants of distribution and composition of amphipods in Probolinggo and Tangerang."

"ABSTRACTThis study investigated the effects of the addition of coral rubble and polyvinylchloride (PVC) guttering as substrates on the growth of the donkey ear abalone (Haliotis asinina) reared in a How through water system. The tanks were 100 cm long x 50 cm wide x 40 cm deep, filled with sea water up to a height of 30 cm. Hatchery produced abalone, with a mean initial shell length of 30.9 i 0.1 mm and wet weight of 5.51: 0.1 g. were stocked at 25 individuals per tank that corresponds to stocking densities of ca. 50 abalone m'2 at the bottom of the tank. Juvenile abalone were provided with plenty of red seaweed Gracilaria spp daily over 175 days. The results show that the growth and growth rates in shell length and wet body weight were not significantly different between treatments (P>0.05). Survival rates of juveniles reared in the tank with the addition of coral rubble and/or PVC guttering were 100%, but 98% for juveniles in the tank without the addition of substrate. The average daily growth rates of shell length and wet body weight were 0.08710037 mm and 008810.044 g for juveniles reared in the tank with coral rubble 0.08110030 mm and 0.07710032 g for juveniles reared in the tank with PVC guttering and 008210.032 mm and 007810.039 g for juveniles reared in the tank without substrates. Juveniles reared in tanks with a flow through water system grew very well. The increase of body weight was more than double (>250%) the initial size."

"ABSTRACTMercury and arsenic are considered to be among the most toxic metals and have been associated with serious adverse health effects. These two trace metals and other contaminants that are found in fish products are therefore of public concern for food safety reasons. Hence, we selected three marine species to study i.e., yellow fin tuna, marlin and green mussels because of their economic values in the international and local markets. The objective of our study was to determine the arsenic and mercury content in these three marine species as a first step in monitoring metal content in seafood products. The tissue samples of tuna and marlin were collected from the Jakarta Fishing Port, while the green mussels was collected from aqua culture sites in Jakarta Bay. The metal content was determined by ICP MS and validated using CRM DORM Z and DORM 3. The speciation of arsenic (organic and inorganic forms) was determined using HPLC ICPMS. All measurements were based on dry weight samples. The result showed that the mercury concentration in yellow fin tuna, marlin and green mussel samples was 0.68 :1: 0.08 mg kg", 0.56 :1: 0.06 mg kg"and 1.51 :t 0.10 mg kg, respectively. The total arsenic concentration in yellow fin tuna, marlin and green mussel samples was 3.47 i 0.21 mg kg, 2.71 i 0.18 mg kg, and 6.77 :t 0.32 mg kg, respectively. The mercury content in the fish tissue was below the maximum allowable concentration (National Standard of Indonesia 1.0 mg kg), except for the green mussels. For total arsenic concentration, all the samples were above the national standard concentration (1.0 mg kg). The organic arsenic species arsentobetaine (AB) found in tuna and marlin fish samples was not toxic. Inorganic and organic arsenic was found in the green mussel samples. Our results suggest that there is a need to establish a national program to regularly monitor the content of selected trace metals in fishery products."

"ABSTRACTAlginate extracted from brown seaweed has gelling properties that make it useful as a wall material in encapsulation systems. Liquid smoke contains the active substances, such as phenols, which can preserve food. In order to protect the active substances, liquid smoke is encapsulated by using alginate and maltodextrin. The purpose of this study was to investigate liquid smoke encapsulation technology with maltodextrin and alginate using a spray dryer, to improve the physical and chemical characteristics of the liquid smoke. The microcapsules of liquid smoke were made, using a spray dryer SD 04, by encapsulating liquid smoke with two types of wall materials, maltodextrin and the combination of alginatemaltodextrin. The ratio of liquid smoke to total solids (wall materials) was 9:1 (v/w). The alginate concentration used was 0.5 to 2% (w/v). Parameters observed in this study were phenol release, shape and morphology, encapsulant efficiency, drying yield, phenol marker and, particle size. This study used a completely randomized design with three replications. The best treatment was obtained by using the alginate with a concentration of 1% (w/v) and maltodextrin of 9% (w/v) with phenol release of 2.52% (w/w) in the 20 minute of release, encapsulant efficiency of 45.13% and drying yield of 28.74%. The particle size analyzer results showed that the particles were agglomerating. Scanning electronic microscope (SEM) observation illustrated that all treatments have a better capsule morphology than the controls, whereas Optilab image processing and analysis software results showed that phenolic compounds are encapsulated by wall materials used."