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ZOOPLANKTON COMMUNITY STRUCTURE AT MAJAKERTA ESTUARY AND ITS SURROUNDING WATERS, INDRAMAYU REGENCY, WEST JAVA PROVINCE Widyarini, Happy; Pratiwi, Niken T.M.; Sulistiono, .
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 1 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v9i1.17919

Abstract

Majakerta estuary and its surrounding waters have a high potential fishery resource which is commonly utilized by the community around the area. Fluctuation of physical and chemical parameters of the waters and fishery activities around the estuary can influence the existence of  zooplankton. This study was conducted from December 2014 to May 2015. Samples of the zooplankton were collected monthly at four stations (consisted of sea, river and estuary areas). Based on the study, zooplankton in the  Majakerta estuary and its surrounding waters consisted of six classes; i.e. Protozoa (11 genera), Crustaceae (4 genera, 1 nauplius stadia), and Rotifera (4 genera). A higher abundance was found at the sea (29025 ind./m3), while a lower  abundance was at the river and estuary (7147 ind./m3 dan 7582 ind./m3).  Based on the zooplankton diversity index, it can be inferred that the value was relatively low. There were two habitat groups, namely Station Group 1 (Station 1 and  2; river and estuary) and Station Group 2 (Station  3 and 4; sea) with influencing parameters such as  transparency, pH, and salinity.  Keywords: estuary, Majakerta, zooplankton, community structure
Kajian Aspek Ekologis dan Daya Dukung Perairan Situ Cilala Pratiwi, Niken T.M.; Hariyadi, Sigid; Ayu, Inna Puspa; Iswantari, Aliati; MZ, Novita; Apriadi, Tri
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1039.912 KB) | DOI: 10.14203/jbi.v11i2.2201

Abstract

ABSTRACTEcological aspect (morphometry, a complexity of community structure, trophic state, and carrying capacity) are one of basic information to build comprehensive management concept of aquatic ecosystem, as Lake Cilala.  The concept was addressed to develop ornamental fish floating cage and natural fishery activity.  Lake Cilala is a longwise shape small lake with maximum length, average width, and average depth as 1141 m, 161 m, 2.67 m respectively.  Lake Cilala has various genera of phytoplankton and zooplankton, 8 genera of benthos, 5 genera of aquatic plants, and 12 fish species including planktivore, herbivore, and carnivore fishes.  Those organisms established food chains, by grazing and detritus food chain.  The trophic state of Lake Cilala was categorized as middle to heavy eutrophic level by Trophic State Index (TSI).  The carrying capacity analysis of Lake Cilala is 130 tons/year. It is resulted a possibility to increase ornamental fish floating cage to 165 units from 300 existed units. Furthermore, the carrying capacity for natural fish was reached 3.77 tons/year. Keywords: carrying capacity, food chain, lake fisheries, small lake management, trophic state 
Produktitvitas Diatom Perifitik yang Ditumbuhkan pada tipe Subtrat Berbeda Sebagai Alternatif Penyediaan Pakan Alami Udang Pratiwi, Niken T.M.; Adiwilaga, Enan M.; Widigdo, Bambang; Soedharma, Dedi
JURNAL BIOLOGI INDONESIA Vol 4, No 3 (2007): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5695.068 KB) | DOI: 10.14203/jbi.v4i3.3262

Abstract

ABSTRACTThe Productivity of Periphytic Diatom Grown on Different Types of Substrates asan Alternative on Providing Natural Feed for shrimp. Providing natural feed is anattempt to support fisheries culture in a polite way for the sustainability of environment.Periphytic community is living aquatic resources that have a potential value for thispurpose. The major component of saline water periphytic community is diatom.The study was emphasized on diatom presentation grown on two types of artificialsubstrates: biocrete (sand, palm fiber, cement) and zeocrete (zeolite, palm fiber, cement).The reseach was conducted in laboratory with an experimen design follows split splitplot in times. The aim of the research is to study the ecological factor and availablenutrients to support the growth of periphitic diatoms (Amphora, Cyclotella, Melosira,Navicula, Phaeodactylum, and Thallassiosira) on two different substrates. Theproductivity of diatom, and the effect of shrimp larvae on the diatom productivity werealso analyzed. Two fertilized materials (biocrete and zeocrete) with two main treatmentsand three levels of treatments each, and unfertilized materials were used as artificialsubstrates for periphitic diatoms. The results show that all treatment could give sufficientbiological available nutrient for the diatoms. The highest diatom productivity was achievedby the population on third level ratio of fertilized biocrete and zeocrete (added by fertilizedwith N:P ratio of 30:l). Diatom productivity follows the shrimp larvae grazing. Theshrimp larvae could grow well on the media with diatom that were grown on fertilizedbiocrete.Key words: periphytic diatoms, natural feed, biocrete, zeocrete, productivity
HUBUNGAN ANTARA KELIMPAHAN FITOPLANKTON DENGAN PARAMETER FISIK-KIMIAWI PERAIRAN DI TELUK JAKARTA -, Yuliana; Adiwilaga, Enan M.; Harris, Enang; Pratiwi, Niken T.M.
Jurnal Akuatika Vol 3, No 2 (2012): Jurnal Akuatika
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Fitoplankton mempunyai peranan yang sangat penting di dalam suatu perairan, selain sebagai dasar dari rantai pakan (primary producer) juga merupakan salah satu parameter tingkat kesuburan suatu perairan. Tujuan penelitian ini adalah mengetahui struktur komunitas dan kelimpahan fitoplankton di Perairan Teluk Jakarta serta mempelajari hubungan antara kelimpahan fitoplankton dengan beberapa parameter fisik-kimiawi perairan.  Penelitian dilaksanakan pada bulan Agustus, September, dan November 2009 di Teluk Jakarta, pada 9 (sembilan) stasiun dengan metode pengendapan.  Hasil penelitian menunjukkan bahwa ditemukan 47 genera dari 4 (empat) kelas fitoplankton yang terdiri atas 26 genera kelas Bacillariophyceae, 8 genera kelas Chlorophyceae, 7 genera kelas Cyanophyceae, dan 6 genera kelas Dinophyceae. Kelimpahan yang diperoleh berkisar antara 194.000 - 20.132.143 sel/l.  Kisaran nilai indeks-indeks biologi yang ditemukan adalah indeks keanekaragaman (H?) = 0,6148 - 2,2375, indeks keseragaman (E) = 0,2397 - 0,8614, dan indeks dominansi (D) = 0,1316 - 0,7498. Parameter fisika-kimia perairan berturut-turut adalah nitrat 0,0072 - 0828 mg/l, ortofosfat 0,0114 - 0,3480 mg/l, silika 0,2787 - 5,9946 mg/l, pH 7,59 - 8,73, suhu 26,40 - 31,80oC, dan salinitas 28,00 - 33,00.  Hasil analisis regresi linear berganda ditemukan bahwa terdapat keterkaitan yang sangat erat antara parameter fisika-kimia perairan dengan kelimpahan fitoplankton (R2 = 0,739) dengan persamaan regresi Y = - 53190202 + 330084 suhu - 199740 salinitas + 6103042 pH - 10442291 nitrat - 3275245 ortofosfat + 2545042 silika. Kata kunci :  fitoplankton, kelimpahan, dan Teluk Jakarta
Status Limnologis Situ Cilala Mengacu pada Kondisi Parameter Fisika, Kimia, dan Biologi Perairan Pratiwi, Niken T.M.; Adiwilaga, Enan M.; Basmi, Johan; Krisanti, Majariana; Hadijah, Oji; K., Pieka Wulandari
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 1 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.67

Abstract

The purpose of this research was to study the limnological status of Cilala reservoir, based on physical, chemical, and biological parameters. The observation comprised some morphometric of surface and vertical dimension, water quality measurements, plankton community structure, and primary productivity. Based on some morphometric condition, Cilala reservoir has a high potention of biological productivity, but the area of lake begins narrowing. The physical and chemical characteristic showed that Cilala reservoir was still in good condition. The condition of Total Suspended Solid (TSS) at inlet and the water debit of outlet showed that the waters has a relatively high potention of sedimentation that lead to a shallowing condition. There were found 95 genus of phytoplankton from seven classes (Bacillariophyceae, Chlorophyceae, Cyanophyceae, Chrysophyceae, Euglenophyceae, Pyrrophyceae, and Xanthophyceae). It was also found four major groups of zooplankton, i.e. Rotifera, Copepoda, Cladocera, and Protozoa. Although the primary productivity was relatively low, based on orthophosphate, chlorophyll-a, and Nygaard Index, the water was in mesotrophic-eutrophic status. As a whole, Cilala reservoir was still appropriate for fisheries activities.
LAND CHANGES AND MANAGEMENT STRATEGIES OF MANGROVE IN SAWO DISTRICT, NORTH NIAS REGENCY, NORTH SUMATERA PROVINCE Mendrofa, Septinus; Kurnia, Rahmat; Pratiwi, Niken T.M.
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 2 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v9i2.19286

Abstract

One of the resources that has potential to utilization is a mangrove ecosystem. The aim of this study was to analyze the changes in the area of mangroves, analyze the causes of destruction of mangroves, and formulate strategies for sustainability management of mangroves in Sawo District. The changes in the area of mangroves was identified from  imagery and analyzed by ArcGis 10.2.2. The causes of mangrove destruction was analyzed from the data collected from the stakeholders in Sawo District that related to management of mangroves in district level, regency level, and province. The data was analyzed by Analytical Hierarchy Process (AHP) to formulate the strategies for sustainability management of mangroves. The result of landsat imagery showed that, mangrove area has decreased about 17,405 ha within a decade. Mangrove destruction was caused by human activities, such as logging and conversion of mangrove land into agriculture. The main strategy for sustainability management of mangroves was community?s empowerment, then followed by others alternatives. Keywords: AHP, coastal, destruction, ecosystem, landsat
APLIKASI ANALISIS KLASTER DAN INDEKS TRIX UNTUK MENGKAJI VARIABILITAS STATUS TROFIK DI TELUK PEGAMETAN, SINGARAJA, BALI Tammi, Turmuzi; Pratiwi, Niken T.M.; Radiarta, I Nyoman
Jurnal Riset Akuakultur Vol 10, No 2 (2015): (Juni 2015)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2648.778 KB) | DOI: 10.15578/jra.10.2.2015.271-281

Abstract

Tren variabilitas status trofik adalah informasi dasar pengelolaan ekosistem perairan dalam kaitannya dengan tingkat eutrofikasi. Tujuan penelitian ini adalah menentukan tren variabilitas status trofik baik secara spasial dan temporal sehingga dapat diterapkan dalam konsep pengelolaan perairan. Selama tiga bulan penelitian (Agustus-Oktober 2014), penelitian ini telah berhasil mengumpulkan data dari 48 titik pengamatan baik saat pasang maupun surut yang bertepatan saat bulan purnama maupun gelap. Data yang dikumpulkan lalu dianalisis secara statistik (analisis klaster) dan penentuan indeks TRIX. Hasil analisis secara spasial menunjukkan bahwa lokasi penelitian terbagi menjadi dua wilayah yakni: K1 untuk kawasan pesisir teluk, K2 untuk tengah, dan ujung teluk dengan nilai masing-masing adalah 4,97±0,92 dan 5,51±0,90. Analisis secara temporal menghasilkan dua kelompok yakni pada bulan Agustus (A1) dan September-Oktober (A2) dengan nilai indeks TRIX masing-masing 4,28±0,99 dan 5,78±0,27. Berdasarkan analisisklaster dan indeks TRIX telah menunjukkan secara jelas bahwa kondisi kawasan klaster K1 lebih baik dibandingkan kawasan klaster K2. Kawasan K1 masih dapat dikembangkan untuk budidaya laut keramba jaring apung (KJA), namun dalam perkembangannya, budidaya laut secara terintegrasi berbasis integrated multi-trophic aquaculture (IMTA) dapat diterapkan guna menjaga daya dukung lingkungan perairan Teluk Pegametan. Tren secara temporal menunjukkan pola yang mengikuti fluktuasi air atau pasang surut, serta jadwal kematian massal ikan setiap tahunnya dan berbeda nyata pada saat Agustus hingga September-Oktober. Hasil penelitian ini diharapkan memberikan informasi tentang kondisi perairan Teluk Pegametan sehingga dapat dilakukan pengelolaan kawasan yang lebih baik untuk kegiatan budidaya laut yang berkelanjutan.
Penilaian Kualitas Air Berdasarkan Sistem Saprobik di Sungai Ciapus Krisanti, Majariana; Pratiwi, Niken T.M.
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (619.639 KB) | DOI: 10.22146/jfs.48

Abstract

Changes of environment could also changes the organisms, as individual, population, or community therefore the appearance of an organism could be applied as biological indicator of those environments. Simple methods were introduced in England, Australia, Thailand, and Indonesia. The objective of this study was to evaluate water quality of Ciapus river using simple kit based on saprobic system. An Illustrated cover and inserted paper were used as kit to evaluate the river water quality. Using this kit, the appearance of specific organisms were used as key to evaluate the river water quality of Ciapus River directly. Samples were taken from two segment of Ciapus River i.e. upper and middle part. According to the method, the upper segment of Ciapus River was categorized as very good condition, while the middle part was in moderate condition.
KAJIAN ASPEK EKOLOGIS DAN DAYA DUKUNG PERAIRAN SITU CILALA Pratiwi, Niken T.M.; Hariyadi, Sigid; Ayu, Inna Puspa; Iswantari, Aliati; MZ, Novita; Apriadi, Tri
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i2.2201

Abstract

ABSTRACTEcological aspect (morphometry, a complexity of community structure, trophic state, and carrying capacity) are one of basic information to build comprehensive management concept of aquatic ecosystem, as Lake Cilala.  The concept was addressed to develop ornamental fish floating cage and natural fishery activity.  Lake Cilala is a longwise shape small lake with maximum length, average width, and average depth as 1141 m, 161 m, 2.67 m respectively.  Lake Cilala has various genera of phytoplankton and zooplankton, 8 genera of benthos, 5 genera of aquatic plants, and 12 fish species including planktivore, herbivore, and carnivore fishes.  Those organisms established food chains, by grazing and detritus food chain.  The trophic state of Lake Cilala was categorized as middle to heavy eutrophic level by Trophic State Index (TSI).  The carrying capacity analysis of Lake Cilala is 130 tons/year. It is resulted a possibility to increase ornamental fish floating cage to 165 units from 300 existed units. Furthermore, the carrying capacity for natural fish was reached 3.77 tons/year. Keywords: carrying capacity, food chain, lake fisheries, small lake management, trophic state 
PRODUKTITVITAS DIATOM PERIFITIK YANG DITUMBUHKAN PADA TIPE SUBTRAT BERBEDA SEBAGAI ALTERNATIF PENYEDIAAN PAKAN ALAMI UDANG Pratiwi, Niken T.M.; Adiwilaga, Enan M.; Widigdo, Bambang; Soedharma, Dedi
JURNAL BIOLOGI INDONESIA Vol 4, No 3 (2007): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i3.3262

Abstract

ABSTRACTThe Productivity of Periphytic Diatom Grown on Different Types of Substrates asan Alternative on Providing Natural Feed for shrimp. Providing natural feed is anattempt to support fisheries culture in a polite way for the sustainability of environment.Periphytic community is living aquatic resources that have a potential value for thispurpose. The major component of saline water periphytic community is diatom.The study was emphasized on diatom presentation grown on two types of artificialsubstrates: biocrete (sand, palm fiber, cement) and zeocrete (zeolite, palm fiber, cement).The reseach was conducted in laboratory with an experimen design follows split splitplot in times. The aim of the research is to study the ecological factor and availablenutrients to support the growth of periphitic diatoms (Amphora, Cyclotella, Melosira,Navicula, Phaeodactylum, and Thallassiosira) on two different substrates. Theproductivity of diatom, and the effect of shrimp larvae on the diatom productivity werealso analyzed. Two fertilized materials (biocrete and zeocrete) with two main treatmentsand three levels of treatments each, and unfertilized materials were used as artificialsubstrates for periphitic diatoms. The results show that all treatment could give sufficientbiological available nutrient for the diatoms. The highest diatom productivity was achievedby the population on third level ratio of fertilized biocrete and zeocrete (added by fertilizedwith N:P ratio of 30:l). Diatom productivity follows the shrimp larvae grazing. Theshrimp larvae could grow well on the media with diatom that were grown on fertilizedbiocrete.Key words: periphytic diatoms, natural feed, biocrete, zeocrete, productivity