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"Many kinds of waste from poultry and fisheries by product such usintestine and blood chicken also shrimp head waste still have high nutrition andsignificant amounts. There are have high potency utilization as alternative feedanother commercial feed for marine worm aquaculture. The aims of this researchwere to know effect different kinds waste material as feed to growth, survival rate,and nutrient composition marine worm Nereis diversicolor. The research usedexperimental design in laboratorium. Experimental unit were arranged in acompletely randomized design with 4 treatments and 6 replication for eachtreatment. Kinds of feed were (A) intestine chicken powder; (B) shrimp headpowder; (C) blood chicken powder and (D) commercial fish feed as control. Theinitial weight of worms were range between 0,67 ? 0,71 g, after cultured for 50days showed weight gain were range between 0,31 ? 1,01 g, spesific growth rate(SGR) 0,73 ? 1,76 %/day, and survival rate 80,56 ? 92,22%. The result of analisisvarian weight growth, spesific growth rate, and survival rate showed significantdifferences. The best treatment was intestine chicken powder compare to the othertreatments. The result of proximate analysis such us protein were ranged between6,37 ? 6,65%. The highest protein on treatment B, and lowest on treatment C.The result of anova showed not significant diferences (P > 0,05) to value proteinworm. Value of fat on end exsperiment were ranged between 1,01 ? 2,34%. Thehighest fat on treatment D and lowest on treatment C. The result of anovashowed significanct differences (P < 0,05) to value of fat worm. The conclusionof this research was all kind of feed from local waste material source can be asalternative feed another commercial feed in marine worm aquaculture."

"Kawasan Segara Anakan merupakan habitat mangrove yang masih lengkap berdasarkan formasi vegetasinya. Keberadaan mangrove mempunyai manfaat bagi masyarakat pesisir. Penelitian ini dilaksanakan pada bulan Desember 2010 sampai Januari 2011. Penelitian ini untuk melihat perubahan secara kuantitatif dan spasial, prediksi trend perubahan luasan hutan mangrove, dan tingkat partisipasi masyarakat dalam pelestarian mangrove di Kawasan Segara Anakan, Kelurahan Kotawaru, Cilacap, Jawa Tengah, Indonesia. Metode yang digunakan dalam penelitian yaitu analisis Overlay dan diskriptif kuantitatif dengan pendekatan survei. Analisis statistik yang digunakan adalah Regresi Linear Sederhana dan Berganda. Hasil penelitian menunjukkan terjadi penyusutan luasan hutan mangrove, tahun 1991 (5.900 ha), tahun 2001 (5.200 ha), tahun 2005 (3.900 ha), dan tahun 2010 (3.600 ha). Berdasarkan persamaan linear sederhana, di prediksi luasan hutan di Kawasan Segara Anakan akan menjadi 0 ha pada tahun 2033. Berdasarkan persamaan linear berganda menunjukkan bahwa terdapat hubungan positif antara pendidikan, pendapatan, dan pengetahuan masyarakat terhadap partisipasi dalam pelestarian hutan mangrove di Kelurahan Kotawaru, Cilacap, Jawa Tengah.

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Segara Anakan Region is the habitat of mangrove which is still complete based on vegetation formation. The existence of mangrove has some advantages for the coastal inhabitants. The research has been accomplished in December 2010 - January 2011. The objectives of the research are to find out the quantitative and spatial changes, and the prediction in the change of mangrove area, and is to see the community's participation in conserving the mangrove in Segara Anakan Region, Kotawaru, Cilacap, Central Java, Indonesia. The method used in the research are analysis of overlay, descriptive with Surveys approach. The statistic analysis used is Simple and Multiple Regression Linear.

The research indicated that the mangrove area has decreased, in year 1991 (5.900 ha), 2001 (5.200 ha), 2005 (3.900 ha), and 2010 (3.600 ha). Based on the Simple Linear Equation, the mangrove will be predicted to become 0 ha in 2033. Based on the statistic analyses indicates that there is a positive relation between education, income, community?s knowledge to the community?s participation in conserving mangrove in Kotawaru, Cilacap, Central Java, Indonesia."

"Penelitian ini bertujuan menganalisis kelimpahan serta bentuk mikroplastik yang terkandung pada saluran pencernaan dan insang ikan kakap putih (Lates calcarifer) di tambak Desa Muara Teluknaga, Tangerang. Sampel sebanyak 10 individu dengan ukuran ±31 cm diisolasi insang serta saluran pencernaanya (lambung dan usus). Analisis mikroplastik pada saluran pencernaan dengan cara melarutkan isi lambung dan usus dengan 30 mL akuades serta mengamati preparat 1 cm² dinding usus dan dinding lambung dibawah mikroskop optik cahaya. Sepanjang 1 cm lembar insang dijadikan preparat, kemudian diamati dibawah mikroskop optik cahaya. Hasil yang didapatkan terdapat mikroplastik bentuk fiber, film, fragmen dan granula dengan ukuran berkisar 20 – 3160 µm. Rata-rata kelimpahan mikroplastik pada larutan isi lambung dan larutan isi usus yaitu 677 ± 241,34 partikel/ind dan 983 ± 211,4 partikel/ind. Sekitar 9,68% dan 11,9% mikroplastik masih ditemukan pada dinding lambung dan usus setelah proses pencucian menggunakan akuades. Rata-rata kelimpahan mikroplastik yang ditemukan pada dinding lambung dan usus yaitu 72,55  ±  34,9 partikel/ind dan 132,72 ± 42,16 partikel/ind. Hal ini menunjukkan kelimpahan mikroplastik pada usus lebih tinggi dibandingkan pada lambung. Ada perbedaan kelimpahan mikroplastik pada insang berdasarkan lembar insangnya. Jumlah rata-rata mikroplastik pada lembar insang pertama hingga keempat pada insang ikan kakap putih yaitu 41,4 partikel per lembar; 25,04 partikel per lembar; 23,52 partikel per lembar; dan 19,53 partikel per lembar. Sementara jumlah rata-rata mikroplastik yang ditemukan pada 10 sampel insang adalah 109,49±38,17 partikel/ind.

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This study aims to analyzed the abudance and type of microplastic in digestive tract and gill of  barramundi  (Lates calcarifer) at Desa Muara pond Teluknaga, Tangerang, Banten. Gills and digestive tract (stomach and intestine) of 10 barramundi with size of about 31 cm were isolated. Microplastic abundance analysis in digestive tract by dissolving the content of stomach and intestine in 30 mL distilled water and observing preparations 1 cm² intestinal and wall under microscope. Gills sample with size of 1 cm of gill sheet made as preparations, then were observed under light optical microscope. The results obtained are microplastic types of fibers, films, fragments and granules with sizes ranging from 20 µm – 3160 µm. Average microplastic abundance in stomatch contents solution and intestine contents solution were 677 ± 241,34 particle/ind and 983 ± 211,4  particle/ind. On average about 9,68% and 11,9% of microplastics are still attached to the stomach and intestine wall after the washing process using distilled water. Average microplastic abundance in stomach wall and intestine wall were 72,55  ±  34,9 particle/ind and 132,72 ± 42,16  particle/ind. It showed that abundance in the intestine is higher than in the stomach. There is a difference in microplastic abundance on the gills based on the gill sheet. The average number of microplastics in the first to fourth gill sheets in the barramundi was 41.4 particles per sheet; 25.04 particles per sheet; 23.52 particles per sheet; and 19.53 particles per sheet. while While the average number of microplastics found in 10 gills samples was 109.49 ± 38.17 particles / ind.

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"Penelitian ini bertujuan untuk mengungkap perspektif masyarakat lokal terhadap satuan-satuan lanskap serta mengungkap pengetahuan dan pemanfaatan sumber daya hayati, terutama sumber daya tumbuhan, oleh masyarakat lokal Pulau Serangan, Bali. Metode penelitian ini diadaptasi dari Multidisiplinary Landscape Assessment (MLA). Data dikumpulkan melalui wawancara, observasi langsung, diskusi kelompok fokus (FGD-Focus Group Discussion), metode distribusi kerikil (PDM-Pebble Distribution Method), serta analisis Local User?s Value Index (LUVI). Terdapat 146 spesies dari 55 famili tumbuhan yang dikenali masyarakat yang tersebar di berbagai satuan lanskap. Satuan-satuan lanskap tersebut yaitu karang/natah (80 spesies tumbuhan), bet muda (54 spesies tumbuhan), bet tua (79 spesies tumbuhan), padang-padang (11 spesies tumbuhan), pasih (7 spesies tumbuhan), kanal, lagun, danau, dan segara. Satuan lanskap pasih memperoleh nilai LUVI tertinggi (24 %). Hasil penelitian juga menunjukkan bahwa terdapat 132 spesies tumbuhan yang dikenali masyarakat di Pulau Serangan, yang diketahui memiliki manfaat sebagai makanan (9,25 %), obat-obatan (6,94 %), kayu bakar (4,31 %). teknologi lokal dan seni (5,38 %), pewarna (3,50 %), sumber penghasilan (8,625 %), ritual/adat (6 %), bahan pakan ternak (5,31 %), dan penunjang rekreasi/wisata (6,75 %). Selain tumbuhan, masyarakat juga memanfaatkan sumber daya lain seperti fauna pesisir dan laut serta makroalga. Untuk pemanfaatan sumber daya hayati pulau secara keseluruhan, dua kategori pemanfaatan dengan nilai LUVI tertinggi berturut-turut yakni sumber penghasilan (19 %) dan bahan makanan (18 %).

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This research attempts to reveal the relationship of the Serangan local people and their landscape, as well as their utilization of biological resources. Data were collected by conducting interview, direct observation in the site of the research, Focus Group Discussion (FGD), Pebble Distribution Method (PDM) and Local User?s Value Index (LUVI) analysis. A total of 146 plant species, distributed in 55 families were cited. The result also showed that Serangan local people identified nine landscape units, namely karang/natah (80 plant species), bet muda (54 plant species), bet tua (79 plant species), padang-padang (11 plant species), pasih (7 plant species), kanal, lagun, danau, and segara. Pasih, kanal, lagun, danau, and segara generally have potential in coastal and marine natural resources. Since each landscape unit differs in biological resources composition, the local people utilize and manage each of them differently. According to the local people?s perspective, the pasih landscape unit gained the highest LUVI score (24 %). The result also showed that a total of 132 useful plant species were used by Serangan people for food (9.25%), medicinal plant (6.94 %), firewood (4.31 %), local technology and art (5.38 %), food-coloring (3,50 %), revenue (8.625 %), ritual/tradition (6 %), livestock fodder (5.31 %), and recreation/tourism (6.75 %). Serangan people also utilize other biological resources such as coastal and marine fauna as well as macroalgae. In terms of utilization of the whole biological resources, two categories with the highest LUVI score respectively are revenue (19 %) and food (18 %)."

"Sumber karbon utama di ekosistem hutan terdiri dari biomassa pohon, tumbuhan bawah, serasah, kayu mati dan bahan organik tanah. Karbon hutan yang tersimpan pada biomassa atas permukaan (BAP) atau aboveground biomass (AGB) merupakan sumber terbesar dan paling terkena dampak deforestasi dan degradasi hutan. Deforestasi dan degradasi hutan merupakan penyumbang kedua terbesar emisi karbon ke atmosfer yang menyebabkan perubahan iklim, setelah penggunaan bahan bakar fosil oleh industri dan transportasi. Penelitian dilakukan dengan tujuan untuk mengkaji potensi BAP dan stok karbon berdasarkan tipe-tipe hutan, serta mengetahui pengaruh deforestasi terhadap perubahan stok karbon hutan di DAS Batang Natal dan sekitarnya, Mandailing Natal, Sumatera Utara. Pengukuran potensi biomassa pohon dilakukan dalam plot ukur berbentuk persegi panjang dengan ukuran 20 m x 125 m sebanyak 15 plot ukur. Sebanyak 8 plot dibuat di hutan lahan kering, 4 plot di hutan mangrove dan 3 plot di hutan rawa. Total area hutan yang disurvei mencapai 3,75 ha. Pohon dengan Diameter at Breast Height (DBH) ≥ 2 cm diidentifikasi dan diukur diameternya. Penghitungan biomassa dilakukan melalui persamaan alometrik yang sudah ada untuk hutan tropis. Analisis deforestasi dilakukan melalui pendekatan penginderaan jauh. Data citra satelit Landsat tahun 2000 dan 2011 dianalisis dengan metode klasifikasi terbimbing (supervised classification) Maximum Likelihood Classifier (MLC). Analisis perubahan biomassa dan stok karbon dilakukan melalui Stock-Difference Method. Perubahan biomassa dan stok karbon total untuk setiap tipe hutan dilakukan melalui perkalian Mg ha-1 dengan luas hutan. Hasil penelitian menunjukkan rerata biomassa pohon hutan lahan kering 364,99 ± 39,32 Mg ha-1, hutan rawa memiliki rerata biomassa pohon 643,95 ± 177,71 Mg ha-1, dan rerata biomassa pohon hutan mangrove 387,37 ± 31,10 Mg ha-1. Pada tahun 2000, DAS Batang Natal dan sekitarnya memiliki total luas tutupan hutan mencapai 93.396, dan tahun 2011 menurun dengan luas 67.961 ha. Dengan demikian, selama periode 2000-2011, luas tutupan hutan yang hilang mencapai 25.435 ha dengan rerata deforestasi 6,26% tahun-1 atau setara dengan 2.312 ha tahun-1. Rerata deforestasi hutan lahan kering mencapai 1,78% tahun-1 dengan emisi karbon sekitar 756.710 Mg CO2e tahun-1. Hutan rawa memiliki rerata deforestasi 4,48% tahun-1 dengan emisi 747.115 Mg CO2e tahun-1.

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The main source of biomass and carbon in the forest ecosystem are coming from trees, litter, dead wood and soil organic matter. Forest carbon stored in the above ground biomass (AGB) is the largest source; however it is also the most affected by deforestation and forest degradation. Deforestation and forest degradation is the second largest contributor of carbon emissions into the atmosphere which caused the climate change issue, after the use of fossil fuels by industry and transportation.

This research was conducted with the aim to assess the potential of AGB and carbon stocks based on forest tipology, as well as to determine the impact of deforestation on change of forest carbon stock in Batang Natal watershed and the surrounding area, Mandailing Natal, North Sumatra. Biomass of trees measurement performed through 15 rectangular sample plots with 20 m x 125 m in size. A total of 8 plots were established in the dryland forest, 4 plots in the mangrove forest and 3 plots in the swamp forest.

The total sampled area was around 3.75 ha. All trees with Diameter at Breast Height (DBH) ≥ 2 cm were recorded and measured. In the absence of destructive sampling measurements, biomass calculated using the existing allometric equations for the tropical forest. Analysis of the deforestation was carried out using remote sensing approach. Two-dates image pair for 2000 and 2011 were classified using a supervised maximum likelihood classifier (MLC). Analysis of biomass and carbon stock changes was carried out using stock-difference method. The difference in carbon stocks is multiplied by the area of each forest type to obtain the total carbon emissions.

The results showed that average of tree biomass for dryland forest is 364.99 ± 39.32 Mg ha-1, the swamp forest has an average of around 643.95 ± 177.71 Mg ha-1, and for mangrove forests is 387.37 ± 31.10 Mg ha-1. In 2000, the total forest cover of study area reached to 93396 ha, while in 2011 the forest cover decreased to 67961 ha. Thus, during the period 2000-2011, forest cover with total 25435 ha have been converted with rate of 6.26% year-1 or equivalent to 2312 ha year-1. The deforestation rate in the dryland forest reached 1.78% year-1 with carbon emissions estimated at 756710 Mg CO2e year-1. The swamp forest deforestation rate was approximately at 4.48% year-1, equivalent to 747115 Mg CO2e year-1 of carbon emissions."

"ABSTRAKLuas padang lamun di Pulau Panjang Teluk Banten terus menurun akibat aktivitas industri di sekitar Teluk Banten Hilangnya padang lamun merugikan dikarenakan kapasitas lamun dalam menyerap dan menyimpan karbon dalam jumlah besar dan waktu yang lama Penelitian bertujuan mengetahui struktur komunitas lamun estimasi laju penyerapan karbon pada lamun Enhalus acoroides dan Cymodocea serrulata beserta nutrien di Pulau Panjang Teluk Banten Komunitas lamun diukur menggunakan metode analisis vegetasi di 3 stasiun pengamatan Penyerapan karbon diukur menggunakan metode penandaan daun Zieman pada 30 tegakan lamun selama 21 hari Kandungan karbon pada lamun dan sedimen di analisis menggunakan metode Wakley Black sedangkan nutrien N P menggunakan metode Kjedahl untuk nitrogen dan metode Bray Kurts untuk fosfat Lamun yang ditemukan di Pulau Panjang yaitu Enhalus acoroides Cymodocea serrulata Syringodium isoetifolium Halophila ovalis dan Halodule uninervis Padang lamun didominansi oleh S isoetifolium dengan nilai kepentingan IV 119 90 Estimasi karbon yang diserap E acoroides dan C serrulata adalah 1 58 gC m2 hari dan 0 31 gC m2 hari dan karbon tersimpan yaitu 142 88 gC m2 untuk E acoroides dan 18 91 gC m2 untuk C serrulata Lamun mengandung 42 91 44 08 karbon dan

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ABSTRACTSeagrass bed in Panjang Island Banten Bay has been decreased due to industry activities Seagrass loss was demetrial because seagrass has capacity in uptake and store carbon in greater scale The aims of research were to gain the seagrass community structure and to estimate carbon uptake and store by seagrass Enhalus acoroides and Cymodocea serrulata also it rsquo s nutrient content in Panjang Island Banten Bay Seagrass community was measured using vegetation analysis method Carbon uptake using Zieman leaf marking method The method was examined at 30 seagrass shoots for 21 days Carbon storage in seagrass also in sediment was analyzed using Wakley Black method There were 5 species seagrass found in Panjang Island Enhalus acoroides Cymodocea serrulata Syringodium isoetifolium Halophila ovalis and Halodule uninervis Seagrass was dominated by S isoetifolium with Importance Value IV 119 90 Seagrass condition on Panjang Island was medium high desity 235 03 ind m2 and good coverage 60 16 Estimation of carbon uptake by E acoroides and C serrulata in Panjang Island were 1 58 gC m2 d and 0 31 gC m2 d while carbon storage were 142 88 gC m2 and 18 91 gC m2 respectively Nutrient in seagrass contained of 42 91 44 08 carbon less than 0 91 nitrogent and phospate under 0 23 ppm Conversely nutrient on the sediment has much greater phosphate average 104 54 116 76 ppm and less than 1 carbon and nitrogent "

"Penelitian dilakukan pada bulan Maret--Juni 2013 di Hutan Mangrove Pancer Cengkrong, Trenggalek, Jawa Timur. Penelitian bertujuan untuk memperoleh informasi komposisi vegetasi, potensi stok karbon, produksi, laju dekomposisi dan kontribusi nutrisi serasah mangrove. Komposisi vegetasi diukur menggunakan transek kuadran. Stok karbon diestimasi dengan persamaan allometrik. Produksi serasah dihitung menggunakan perangkap serasah ukuran 1x1m2. Laju dekomposisi serasah diukur selama 56 hari dengan pengamatan 2 minggu sekali. Kontribusi serasah ke perairan diperoleh dengan menyaring serasah pada saluran air saat laut surut. Sebanyak 26 spesies telah diidentifikasi (17 mangrove sejati dan 9 mangrove asosiasi). Vegetasi pohon didominasi oleh Sonneratia alba J.E. Smith dengan kerapatan 596 pohon/ha sedangkan anakan dan semai didominasi Ceriops tagal (Perr.) C.B. Robinson (kerapatan 1.745 anakan/ha; 34.745 semai/ha). Stok karbon dan biomassa total di lokasi penelitian masing-masing 185,81 ton/ha dan 400,45 ton/ha (total serapan CO2 sebesar 681,91 ton/ha). Sebagian besar sumbangan stok karbon berasal dari S. alba, Rhizophora apiculata Blume, dan Avicennia alba Blume. Produksi serasah 1,42 g/m2/hari, tersusun atas daun 84%, organ reproduksi 9% dan ranting 7%. Potensi nutrisi serasah 0,4 gC/m2/hari dan 0,012 gN/m2/hari. Serasah dilepas ke perairan sebesar 11,15 g/m3/hari. Laju dekomposisi serasah daun paling cepat ialah R. apiculata (0,20 g/hari). Nilai nutrisi tertinggi terdapat pada S. alba dengan rasio C:N 62,90.

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Research has been conducted in March--June 2013 on the Mangrove Forest Cengkrong Pancer, Trenggalek, East Java. The objectives were to obtain information of vegetation composition, potential carbon stocks, production, decomposition rates, and nutrient contribution of mangrove litter. There were 50 quadrants on tree stations for vegetation analysis. Potential carbon stock was calculated by allometric equations. Littertrap size 1x1 m2 used to calculate litter production. Decomposition rate calculated for 56 days by once observation in two weeks. Litter contribution to waters was obtained by filtering water channel at low tide. The total of 26 species were identified (17 true mangroves and 9 association mangroves). The vegetation dominated by Sonneratia alba J.E. Smith (596 trees/ha) while the saplings and seedlings dominated by Ceriops tagal (Perr.) C.B. Robinson (1,745 saplings/ha; 34,745 seedlings/ha). Total biomass were 400.45 ton/ha and carbon stocks 185.81 ton/ha (CO2 uptake 681,91 ton/ha). The carbon stocks were donated from S. alba, Rhizophora apiculata Blume, dan Avicennia alba Blume. The production of litter was 1.42 g/m2/day consisting of leaves 84%, reproductive organs 9%, and twigs 7% respectively. The litter contained 0.4 gC/m2/day and 0.012 gN/m2/day. In addition 11.15 g/m3/day litters flow towards the waters during high tide. The fastest decomposition rate of leaf litter was R. apiculata (0.20 g/day). While the highest nutritional value from S. alba with C:N ratio of 62.90."

"Penelitian bertujuan untuk menilai kualitas Sungai Cibareno di Banten, Jawa Barat. Penelitian dilakukan dengan menyatakan hasil identifikasi makrozoobentos sebagai bioindikator yang diambil dari 9 stasiun penelitian di Sungai Cibareno. Analisis makrozoobentos dalam rangka pemantauan kualitas Sungai Cibareno menggunakan Biological Monitoring Working Party - Average Score per Taxon (BMWP - ASPT) pada tingkat famili atau kelompok makrozoobentos berdasarkan toleransinya terhadap cemaran. Hasil penelitian menunjukkan bahwa bagian hulu, tengah, dan hilir sungai Cibareno berturut - turut memiliki nilai ASPT sebesar 5,3, 5,5 dan 4,8. Secara keseluruhan Sungai Cibareno memiliki nilai ASPT 5,2 dan termasuk dalam tingkat pencemaran ringan.

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The main objective of this study was to assess the quality of Cibareno River in Banten, West Java. The research was conducted by explain the result of identification of macrozoobenthos as the indicator which taken form 9 research stations in Cibareno River. The analysis of macrozoobenthos in order to monitor the quality of Cibareno River is using Biological Monitoring Working Party - Average Score per Taxon (BMWP - ASPT) on the family level or groups of macrozoobenthos based on the tolerance of the organism against pollutant. The result showed that the head, the middle and the downstream of Cibareno River has the ASPT score about 5,3, 5,5 and 4,8. The entire score of Cibareno River is 5,2 and it means that the pollutant level is low."

"Vachellia nilotica diintroduksi ke Taman Nasional Baluran (TNB) sejak tahun 1969 sebagai sekat bakar antara savana dan hutan tropis. Namun, tanaman tersebut tumbuh secara tidak terkendali dan menjadi tumbuhan invasif. Pengendalian secara mekanik dan kimia telah digunakan tapi belum berhasil menyelesaikan masalah tersebut. Solusi alternatif seperti penggunaan serangga sebagai agen pengendali hayati perlu diterapkan. Nilai Potensial serangga (NP) ditentukan oleh Indeks Nilai Penting (INP), dan hubungan filogeni serangga Indonesia dan Afrika. Penelitian dilakukan pada bulan Maret 2014 dengan 150 sampel V. nilotica menggunakan purposive sampling method dan line transect, sedangkan serangga dikumpulkan menggunakan metode beating tray. Terdapat 50 jenis serangga ditemukan pada V. nilotica. Lima jenis serangga dengan nilai NP yang tinggi dipilih. Jenis tersebut dikelompokan kedalam suku Geometridae (NP = 2.594 dan 2.004), Pyralididae (NP = 2.391), Aphididae (NP = 2.042), dan Membracidae (NP = 2.004). Geometridae dan Pyralididae adalah serangga yang paling direkomendasikan karena spesifisitas dan dominansinya. Penelitian lebih lanjut dianjurkan untuk melihat aktivitas serangga potensi sebagai pengendali hayati.

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Vachellia nilotica was introduced to Baluran National Park (BNP) since 1969 as firebreaks between savana and tropical forest . However, this plant grows out of control and becomes invasive. Mechanical and chemical control have been used but have not managed to resolve the problem. Alternative solution such as using insect as biocontrol agent should be applied. Potential Value of insects (PV) is determined by the importance value index (IVI), and insect phylogeny relations between Indonesia and Africa insects. The study was conducted in March 2014, with 150 V. nilotica using purposive sampling method and line transects, while insects collected using beating tray method. There are 50 species of insects found on V. nilotica. Five species whose NP is high are choosen. These species grouped into Family Geometridae (PV= 2.594 and 2.004), Pyralididae (PV = 2.391), Aphididae (PV = 2.042), and Membracidae (PV = 2.004). Geometridae and Pyralididae are the most recommended insect because of their specificity and dominance. Further research need to be conducted to see the activity of insect as biocontrol."

"Telah dilakukan penelitian untuk mengetahui pengaruh pemberian alga cokelat (Sargassum) dalam ransum terhadap pertumbuhan dan sintasan ikan nila srikandi (Oreochromis aureus x O. niloticus) yang dipelihara dengan sistem akuaponik. Terdapat 4 perlakuan dan 3 ulangan. P0 yang diberi pakan tanpa campuran Sargassum, kelompok P1 yang diberi pakan dengan campuran Sargassum 2%, kelompok P2 yang diberi pakan dengan campuran Sargassum 4%, dan kelompok P3 yang diberi pakan dengan campuran Sargassum 6%. Hasil uji anava satu faktor (P > 0,05) menunjukkan tidak adanya pengaruh nyata pemberian Sargassum terhadap pertumbuhan dan sintasan pada semua kelompok perlakuan.

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The research was done to observe the effect of brown algae (Sargassum) in the ration on the growth and survival of Srikandi tilapia (Oreochromis aureus x O. niloticus) were maintained aquaponics system. There are 4 treatments and 3 replication. P0 mixture fed without Sargassum, P1 group fed with a mixture of 2% Sargassum, P2 group fed with a mixture of Sargassum 4%, and the P3 group fed with Sargassum mixture of 6%. The feed is given three times daily for 8 weeks. The result anova test (P > 0.05) showed no significant effect on the survival and provision of Sargassum growth in all treatment groups."