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Abstrak :
Zooplankton merupakan komponen penting pada ekosistem perairan yang memiliki sebaran dalam skala ruang dan waktu. Sebaran dan keanekaragaman zooplankton merupakan salah satu indikator biologis kualitas suatu perairan.Kajian mengenai sebaran dan kelimpahan zooplankton di Danau Maninjau, Sumatera telah dilakukan Desember 2005......

Abstrak :
[ABSTRAK
Telah dilakukan penelitian mengenai identifikasi spesies dan distribusi larva udang mantis di Teluk Banten selama bulan Oktober 2013--November 2013. Penelitian bertujuan untuk mengukur efektivitas aplikasi DNA barcoding dalam identifikasi larva udang mantis dan mempelajari pola distribusinya di Teluk Banten. Larva udang mantis sebanyak 138 individu dikoleksi dengan menggunakan jaring larva dengan besar mulut 30x30 cm2 dan besar jaring sebesar 500 μm dari 6 stasiun penelitian. Daerah COI sebagai penanda DNA barcoding efektif dapat digunakan untuk identifikasi larva udang mantis dengan variasi intraspesies sekuen COI berkisar antara 0,7--2,4%. Distribusi larva udang mantis berpusat di Stasiun 4 yang ditandai dengan tingginya kelimpahan larva udang mantis pada lokasi tersebut (P<0,005; ANOSIM). Ordinasi NMDS dan klusterisasi berdasarkan jarak Bray-Curtis menunjukkan distribusi larva udang mantis dipengaruhi oleh kondisi perairanTeluk Banten. Faktor lingkungan yang memengaruhi kelimpahan larva udang mantis adalah suhu, salinitas dan kecerahan dengan nilai R2 adjusted sebesar 94,5% (P<0,05). Distribusi, kelimpahan, dan komposisi larva udnag mantis di Teluk Banten juga dipengaruhi oleh pola perilaku larva (vertical migration) dan arah arus yang memengaruhi perairan Teluk Banten. Distribusi kelimpahan larva pada lokasi penelitian selama bulan Oktober--November 2013 bergerak kearah barat Teluk Banten.

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ABSTRACT
Planktonic larvae of stomatopoda were collected at six stations in Banten Bay from October 2013 to November 2013, aimed at assessing effectiveness of using COI gene for barcoding stomatopoda larvae and studying its distribution in Banten Bay. A total of 138 stomatopod larvae were obtained by deploying larval trap of 30x30 cm2 mouth diameters and 500 μm mesh size for approximately 10 minutes just beneath the surface. Five species of stomatopod successfully identified using COI gene as barcode marker. Variation of intraspecies for COI gene based on Kimura 2-Parameter (K2P) were found to be ranged from 0,7% to 2,4%. NMDS ordination and Bray-Curtis cluster shown that distribution of stomatopod larvae affected by hydrodynamic on Banten Bay. Larvae abundance at six stations in Banten Bay affected by temperature, salinity, and visibility with score of adjusted R2 is 94,5% (P<0,05). Distribution, abundance, and diversity of stomatopods larvae are affected by vertical migration and current on Teluk Banten water.;Planktonic larvae of stomatopoda were collected at six stations in Banten Bay from October 2013 to November 2013, aimed at assessing effectiveness of using COI gene for barcoding stomatopoda larvae and studying its distribution in Banten Bay. A total of 138 stomatopod larvae were obtained by deploying larval trap of 30x30 cm2 mouth diameters and 500 μm mesh size for approximately 10 minutes just beneath the surface. Five species of stomatopod successfully identified using COI gene as barcode marker. Variation of intraspecies for COI gene based on Kimura 2-Parameter (K2P) were found to be ranged from 0,7% to 2,4%. NMDS ordination and Bray-Curtis cluster shown that distribution of stomatopod larvae affected by hydrodynamic on Banten Bay. Larvae abundance at six stations in Banten Bay affected by temperature, salinity, and visibility with score of adjusted R2 is 94,5% (P<0,05). Distribution, abundance, and diversity of stomatopods larvae are affected by vertical migration and current on Teluk Banten water.;Planktonic larvae of stomatopoda were collected at six stations in Banten Bay from October 2013 to November 2013, aimed at assessing effectiveness of using COI gene for barcoding stomatopoda larvae and studying its distribution in Banten Bay. A total of 138 stomatopod larvae were obtained by deploying larval trap of 30x30 cm2 mouth diameters and 500 μm mesh size for approximately 10 minutes just beneath the surface. Five species of stomatopod successfully identified using COI gene as barcode marker. Variation of intraspecies for COI gene based on Kimura 2-Parameter (K2P) were found to be ranged from 0,7% to 2,4%. NMDS ordination and Bray-Curtis cluster shown that distribution of stomatopod larvae affected by hydrodynamic on Banten Bay. Larvae abundance at six stations in Banten Bay affected by temperature, salinity, and visibility with score of adjusted R2 is 94,5% (P<0,05). Distribution, abundance, and diversity of stomatopods larvae are affected by vertical migration and current on Teluk Banten water., Planktonic larvae of stomatopoda were collected at six stations in Banten Bay from October 2013 to November 2013, aimed at assessing effectiveness of using COI gene for barcoding stomatopoda larvae and studying its distribution in Banten Bay. A total of 138 stomatopod larvae were obtained by deploying larval trap of 30x30 cm2 mouth diameters and 500 μm mesh size for approximately 10 minutes just beneath the surface. Five species of stomatopod successfully identified using COI gene as barcode marker. Variation of intraspecies for COI gene based on Kimura 2-Parameter (K2P) were found to be ranged from 0,7% to 2,4%. NMDS ordination and Bray-Curtis cluster shown that distribution of stomatopod larvae affected by hydrodynamic on Banten Bay. Larvae abundance at six stations in Banten Bay affected by temperature, salinity, and visibility with score of adjusted R2 is 94,5% (P<0,05). Distribution, abundance, and diversity of stomatopods larvae are affected by vertical migration and current on Teluk Banten water.]

Abstrak :
Plankton berperan penting dalam ekosistem perairan, karena kehadirannya dapat mempengaruhi komunitas lain. Penurunan populasi ikan dipengaruhi oleh beberapa faktor yaitu faktor kondisi lingkungan dan ketersediaan makanan. Penelitian ini bertujuan menganalisis kondisi perairan Pandeglang dilihat dari parameter fisika suhu, kecerahan, kecepatan arus , kimia salinitas, pH, DO, nitrat, fosfat dan biologi klorofil-a , menganalisis struktur komunitas plankton di perairan Pandeglang, menganalisis hubungan antara parameter fisika-kimia perairan dengan struktur komunitas plankton, menganalisis ketersediaan makanan ikan dan kebiasaan makan ikan kembung terhadap fitoplankton di perairan Pandeglang. Penelitian dilaksanakan dari bulan September-Oktober 2017. Pengambilan sampel fitoplankton menggunakan plankton net 80 m dengan penarikan horizontal dan zooplankton menggunakan plankton net 133 m dengan penarikan vertikal. Komposisi fitoplankton terdiri dari 37 genus dengan 4 filum yaitu Bacillariophyta, Miozoa, Cyanophyta dan Euglenophyta dengan kelimpahan berkisar pada 2,785-29,425 ind/liter. Indeks keanekaragaman fitoplankton rata-rata sebesar 1,62, indeks keseragaman 0,65, dan indeks dominansi sebesar 0.29. Komposisi zooplankton terdiri dari 35 genus dengan 12 filum dengan kelimpahan berkisar pada 279-480 ind/liter. Indeks keanekaragaman zooplankton rata-rata sebesar 1.69, indeks keseragaman sebesar 0.72, indeks dominansi sebesar 0.27. Hubungan parameter lingkungan perairan terhadap kelimpahan fitoplankton : berkorelasi positif [kecepatan arus 0.793 , fosfat 0.122 ] dan sangat signifikan [kecepatan arus ? ......Plankton play an important role in aquatic ecosystems, because its presence can affect other communities. The decrease of fish population is influenced by several factors, namely environmental condition and food availability. This study aims were to analyze the condition of Pandeglang waters viewed from the physics parameters temperature, brightness, current velocity , chemistry salinity, pH, DO, nitrate, phosphate and biology chlorophyll a , analyzing the plankton community structure in Pandeglang waters, between water physics chemical parameters and plankton community structure, analyzing the availability of fish food and feeding habits of Indian Mackerel on phytoplankton in Pandeglang waters. The study was conducted from September to October 2017. Phytoplankton sampling using 80 m plankton net with horizontal drag and zooplankton using 133 m net plankton with vertical drag. The phytoplankton composition consists of 37 genera with 4 phyla namely Bacillariophyta, Miozoa, Chyanophyta and Euglenophyta with abundance ranging from 2,785 29,425 individu liter. The phytoplankton diversity index was 1.62, the evenness index was 0.65, and the dominance index was 0.29. The composition of zooplankton consists of 35 genera with 12 phyla with abundance ranging from 279 480 individu liter. The zooplankton diversity index of 1.69, evenness index of 0.72, the dominance index of 0.27. The relation of environmental parameters to phytoplankton abundance positively correlated current velocity 0.793 , phosphate 0.122 and strong significant current velocity

Abstrak :
Hurun Gulf waters including Fisheries Management Area (WPP) and the Java Sea in the area of Lampung Bay waters. Hurun Bay around many ponds, sights, and karamba Floating Net, so the activities carried out at sea and on land can have a negative effect on this region, especially the quality of aquatic environment. Therefore, to study the depth of the plankton community structure that can be used as the basis of information in monitoring the condition of the waters. This research was conducted during two weeks in January, February, and March. Defined 15 stations taking measurements and water and plankton samples, with two replications, from each station. Determination of the station based on the condition of the area. Sampling for phytoplankton taken with a Kitahara net cone with diameter 31 cm, length 100 cm and eye net size for surface and vertical net 80 m. Zooplankton sampling with a NORPAC net with diameter 45 cm, 180 cm length and eye net size for surface and vertical net 300 m. These samples were preserved with formalin 4 then analyzed in the laboratory using the method of sub-samples. Plankton was observed and analyzed using a microscope binoculars. The instrument used for measuring chemical and physical parameters are thermometer, refraktometer, Secchi disc, and bathymetrimeter. Vehicle used was 40 HP fishing boat. Phytoplankton species identification results of the surface are 50 genera, including in the class 3 or Diatoms Bacillariophyceae (36 genera), Cyanophyceae (3 genera) and Dinophyceae (11 genera) and the vertical is 56 genera which are 36 genera composition classes Bacillariophyceae, 4 genus 16 genus of Cyanophyceae and Dinophyceae. The dominant genus of the class is Bacillariophyceae Chaetoceros, Thalassiosira, Thalassionema and Biddulphia and three genera of the class Dinophyceae is Ceratium, Noctiluca and Protoperidinium. Diversity index values range in the surface 1.50 (Station 15) - 0.59 (Station 10), while the vertical 1.79 (Station 9) - 0.78 (Station 15). The range of values of surface uniformity index 0.47 (Station 15) - 0.17 (Station 10), whereas the vertical range of values uniformity index 0.64 (Station 9) - 0.16 (Station 15). Dominance is the highest index of 0.83 indicates that dominance is. Total abundance of phytoplankton ranged from the lowest 750 cells / l until the highest 192750 cells / l. The dominant zooplankton obtained from the class Crustacea, which is taking 24 genera in the genus 19 surface and vertically, Protozoa class (on the surface of genus 17 and 18 are vertical), Annelida (on the surface of genus 7 and 6 are vertical), Protochordata (there are two genus on the surface or vertical), molluscs (two genera), and Rotifera Echinodermata one genus. Diversity index values range in the Surface, 2.27 (Station 4) - 0.64 (Station 3) and the Vertical 2.33 (Station 1) -0.82 (Station 15). The range of surface uniformity index value, 0.99 (Station 2) -0.42 (Stasiun12), whereas the vertical range of values uniformity index 0.95 (Station 4) -0.54 (Station 14). Dominance is the highest index of 0.66, indicating that dominance was. The lowest surface abundance of 6750 ind / l (Station 14), the highest 144000 ind / l (Station 3). Phytoplankton relationships with environmental factors, phytoplankton abundance parameters are influenced by phosphate and brightness, but the most affecting is phosphate, when viewed between phytoplankton abundance parameters week has a close affinity with salinity, DO, depth and pH. Zooplankton relationships with environmental factors seen in between stations have a close connection with the phosphate and brightness, and when viewed from the inter-week zooplankton abundance parameter has a close affinity with salinity, DO, phosphate and pH. Relationships of phytoplankton-zooplankton abundance correlated positively linear in time corresponding to the regression equation Y = 0,502X – 8226. The results showed that herbivorous zooplankton feed speed is proportional to the speed increase phytoplankton populations.

Abstrak :
Penelitian ini dilakukan untuk mengetahui komunitas zooplankton dan hubungan antara zooplankton dengan fitoplankton di Waduk Krenceng Cilegon. Kelimpahan zooplankton ditentukan dengan metode Sedwigck-Rafter Counting Method. Hubungan antara zooplankton dengan lingkungan dianalisis dengan regresi linier berganda. Keeratan hubungan zooplankton dengan fitoplankton menggunakan analisis korelasi regresi. Hasil identifikasi ditemukan 13 jenis zooplankton yang termasuk dalam 3 kelas. Rotifera merupakan kelompok yang dominan ditemukan pada November 2002 dan Maret 2003. Hasil regresi menunjukkan faktor lingkungan yang berpengaruh terhadap kelimpahan zooplankton pada bulan November adalah pH, BOD 5 , nitrat, CO2 bebas dan kelimpahan fitoplankton, sedangkan pada bulan Maret adalah kecerahan, nitrat, orthoposfat, dan C organik. Keeratan hubungan fitoplankton dengan zooplankton berkorelasi positif.

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Zooplankton communities in the Krenceng Reservoair, Cilegon, Banten. This research was carried out to know the structure of zooplankton communities and relations between the phytoplankton and zooplankton in the Krenceng Reservoair, Cilegon. The zooplankton abundance with used Sedwigck Rafter Counting Method, diversity and evenness were counted. Relations between zooplankton and the environmental factors as well as its relations to phytoplankton calculated with regression. The results showed that are 13 species of the zooplankton found which including in three classes with the highest abundance on Novembers 2002 and March 2003 of the Rotifera. The analysis of regression pointed out that the environmental factors such: pH, BOD5, nitrate, CO2 and abundance of phytoplankton influence the abundance zooplankton in November. While in March, the abundance of zooplankton is influenced by brigthtness, nitrate, orthophosphates and C organic. The abundance of phytoplankton influenced positively by the abundance of zooplankton.

Abstrak :
Zooplankton merupakan organisme mikro yang hidup di permukaan laut dan bergerak seperti suatu partikel dalam air. Pergerakan pada zooplankton di permukaan laut dinyatakan ke dalam persamaan diferensial parsial yang disebut persamaan difusi. Dengan menambahkan syarat awal dan syarat batasnya maka dapat dicari solusi eksak dengan menggunakan metode variabel terpisah. Selanjutnya dilakukan simulasi penyelesaian persamaan difusi dengan menggunakan program mathematica.

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Zooplankton are the microorganisms that live at sea level and move like a particle in the water. The movement of the zooplankton in the sea surface can be expressed in partial differential equations, called the diffusion equation. By adding the initial and boundary condition, a separation variable method can be sought to be used for the particular solution. Next, a simulation is made to solve the completion of the diffusion equation using mathematical program.

Abstrak :
Penelitian hubungan kuantitatif antara fitoplankton dan zooplankton herbivor di Teluk Jakarta telah dilakukan pada Agustus dan September 2009. Sampel pada 10 stasiun diambil secara horizontal menggunakan jaring Kitahara untuk sampel fitoplankton dan jaring NORPAC untuk zooplankton. Tabulasi data disajikan dalam bentuk tabel dan grafik serta dianalisis secara deskriptif. Kelimpahan kelompok Diatom, Dinoflagellata, dan Cyanophyta memiliki korelasi negatif terhadap kelimpahan zooplankton herbivor pada bulan Agustus 2009. Kelimpahan zooplankton herbivor dapat dijelaskan sebesar 23,4% dengan persamaan regresi linear yang terbentuk pada bulan Agustus 2009. Kelimpahan kelompok Diatom, Dinoflagellata, dan Cyanophyta memiliki korelasi positif terhadap kelimpahan zooplankton herbivor pada bulan September 2009. Kelimpahan zooplankton herbivor dapat dijelaskan sebesar 88,8% dengan persamaan regresi linear yang terbentuk pada bulan September 2009.

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Research on quantitative relationship between phytoplankton and herbivore zooplankton in Jakarta Bay was conducted on August and September 2009. Sample at 10 stations was taken horizontally by Kitahara net for phytoplankton and NORPAC net for zooplankton. The data tabulation are showed in tables and graphs and also analyzed descriptively. Abundance of Diatom, Dinoflagellate, and Cyanophyta have negative correlation for herbivore zooplanktons on August 2009. Abundace of herbivor zooplankton can explain 23,4% by regression linearity on August 2009. Abundance of Diatom, Dinoflagellat, and Cyanophyta have positive correlation for herbivore zooplanktons on September 2009. Abundace of herbivor zooplankton can explain 88,8% by regression linearity on September 2009.