23 results on '"Yayuk Sugianti"'
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2. Reef Fish Biodiversity at Different Depths in Tunda Island, Banten Province, Indonesia
- Author
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Mujiyanto Mujiyanto, Amran Ronny Syam, Sasanti R. Suharti, Yayuk Sugianti, and Saras Sharma
- Subjects
Biology (General) ,QH301-705.5 - Abstract
Reef composition and diversity of coral reef fishes play an essential role in the ecosystem. The reef fish diversity is a crucial indicator of the health level of coral reef ecosystems. The benefit of fish diversity in coral reef ecosystems is to describe ecological services. This research intended to determine reef fish diversity among stations at different depths, consisting of shallow water and reef slope. Research sampling was done in July 2018 and July 2019 in Tunda Island waters at eight stations billowing the coral distribution pattern. Collected data of reef fishes were by using Underwater Visual Census (UVC) on Belt Transects Method at 250 m2 transect area (50 meters of length and 2.5 m on either side). The result showed 69 reef fishes in shallow water and 67 species on the reef slope. The total of fish species ware from 13 families consisting of Acanthuridae, Apogonidae, Blenniidae, Chaetodontidae, Ephippidae, Haemulidae, Labridae, Lutjanidae, Nemipteridae, Pomacentridae, Pseudochromidae, Scaridae and Serranidae. The community services structure of coral reef fishes is included in the moderate community stability category with an H’ value ranging from 1.19-1.60 in shallow water and 1.23-1.44 at reef slope, respectively. Diversity in coral reef fish communities might be associated with species' spatial distribution over the reef habitat's physical structure, but these patterns could be highly scale-dependent. In general, it could be said that the higher the coral reef diversity, the higher the reef fish diversity.
- Published
- 2022
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3. Current Status and Species Diversity of Seagrass in Panjang Island, Banten
- Author
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Yayuk Sugianti and Mujiyanto Mujiyanto
- Subjects
banten ,species diversity ,seagrass ,current status ,panjang island ,Oceanography ,GC1-1581 ,Biology (General) ,QH301-705.5 - Abstract
Damage to seagrass beds in Panjang Island, Banten, has increased every year. The most significant decline occurred at an interval of 2000-2005 with a decrease of about 22.9 ha. Seagrass damage continued to increase at the year between 1989-2002 as a result of natural stone mining and coastal reclamation activities to become industrial areas and ports. The objective of this study was to determine the characteristics of the species and current status of seagrass communities in Panjang Island waters, Banten. Analysis of seagrass data included identification of species, frequency, density, percent coverage, and important value index. Based on these results, it was found three species of seagrass on Panjang Island, Banten, including species of Enhalus acoroides, Cymodocea serrulata, and Syrongodium isoetifolium. The percentage of seagrass coverage at five different research stations, the highest percentage of seagrass coverage was at station IV with a percentage of coverage of 48.94% and the lowest coverage was obtained at station V of 10.28%. The calculation of the importance value index (INP) of seagrass in Panjang Island waters, Banten, showed that the highest INP value was found in the Cymodocea serrulata seagrass species which was 41.47 and the lowest was found in the Syrongodium isoetifolium seagrass species which was 16.81. PCA analysis was also conducted to determine the relationship of seagrass density with chemical physics parameters. The results obtained showed the condition of seagrass ecosystems in Panjang Island waters, Banten, which was at a level of moderate to severe damage. The results of PCA analysis showed that water temperature, nitrate concentration, DO, and TSS greatly influenced the density of seagrass in these waters.
- Published
- 2020
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4. Periphyton Response Analysis to the Pollution in Seagrass Ecosystem Panjang Island, Banten
- Author
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Yayuk Sugianti, Barti Setiani Muntalif, and Priana Sudjono
- Subjects
Periphyton ,Panjang islands ,Seagrass ,Water Quality ,Oceanography ,GC1-1581 ,Biology (General) ,QH301-705.5 - Abstract
Increases in coastal pollutants, largely due to human activity on land, have an impact on seagrass ecosystems. The high sedimentation in the waters causes an increase in the concentration of sludge, organic matter, nutrients, and turbidity which reduce the depth that can be reached by sunlight. The condition affects seagrass ecosystems adversely. Changes in water condition can be illustrated by the presence of water organisms. One dominant organism in seagrass ecosystems is periphyton. The existence of periphyton in the waters is determined by physical and chemical conditions of the waters because it has specific limit of tolerance, which causes different community structure. To analyze periphyton response to the changes of environmental quality in seagrass ecosystems, Shannon Winner diversity and Saprobic Indices were measured at Panjang Island, Banten. The results of water quality assessment indicates the status of aquatic seagrass of the island considered as polluted to heavy polluted. It is observed from some physico-chemical parameters that exceeded the standard quality for the life of seagrass ecosystems and marine life. Based on the classification and saprobic coefficient using periphyton biological parameters, the condition of seagrass land ecosystem in the island is classified into β Mesosaprobic to β/α Mesosaprobic phase, which indicates light to medium pollution with pollutants including organic and inorganic materials. Several types of dominant periphyton were discovered during the observations, including Meridion sp, Navicula sp, Nitzschia sp and Synedra sp. This periphyton species belong to Bacillariophyceae class (Family Chrysophyta) that is commonly used to assess the condition of eutrophication and organic pollution on waters.
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- 2018
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5. Bioekologi Ikan Kerapu di Kepulauan Karimunjawa (Bioecology of Groupers in Karimunjawa Waters)
- Author
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Mujiyanto Mujiyanto and Yayuk Sugianti
- Subjects
Oceanography ,GC1-1581 ,Biology (General) ,QH301-705.5 - Abstract
Kelompok ikan yang menjadi target penangkapan di perairan Kepulauan Karimunjawa antara lain adalah ikan yang berasosiasi dengan ekosistem karang, seperti Kerapu (Epinephelus sp. dan Plectropomus sp.). Kerapu tergolong ikan demersal yang menyukai hidup di antara celah karang atau di dalam gua di dasar perairan. Penelitian ini bertujuan untuk mengetahui kondisi bioekologi ikan Kerapu di Kepulauan Karimunjawa. Penelitian dilakukan pada tahun 2011-2013. Komunitas ikan Kerapu diamati dengan menggunakan metode transek garis pada kedalaman 5-6 dan 10-11 meter. Hasil analisis menunjukkan bahwa ikan Kerapu mempunyai keanekaragaman yang rendah dengan sebaran jenis yang merata di seluruh perairan. Terdapat dominasi jenis di Pulau Cendikian. Kesamaan jenis terdekat pada nilai >95 % di kedalaman 5-6 meter dan 10-11 meter yang membentuk empat kelompok terdekat. Determinasi jenis ikan Kerapu dengan hasil tingkat kesamaan jenis terdekat dengan nilai >95 % di Pulau Kumbang (sisi utara), Pulau Kembar dan Batu Lawang. Perbedaan indeks ekologi dan kesamaan jenis Kerapu diduga dikarenakan faktor fisik-kimia perairan dan ketersediaan nutrisi serta oleh aktivitas nelayan dan kegiatan masyarakat. Kata kunci: ikan; Kerapu; indeks ekologi; Karimunjawa Fish target groups in Karimunjawa waters consist of associated coral reef fish species such as grouper (Epinephelus sp. and Plectropomus sp.). This study aims to determine bioecology the condition of grouper in Karimunjawa waters. The study was conducted during 2011-2013. Data collection was performed using line transect method at 5-6 and 10-11 meters depth. The ecological value of grouper in waters Karimunjawa showed low diversity and the species of groupers is evenly distributed across the waters. There is species dominance in Cendikian Island. The species also showed closest similarity (> 95 %) in both the depth and formed 4 groups. The closest similarity (> 95 %) happened among the waters of north side of Kembang Islands Beetles (north side), Kembar Island and Batu Lawang. The condition of groupers in Karimunjawa waters is affected by physical-chemical factors, the availability of nutrients, fishing activities and community activity. Keywords: fish; grouper; ecological index; Karimunjawa
- Published
- 2014
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6. Hydro-oceanography Profile Condition at Tunda Island Serang District Banten Province, Indonesia
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Mujiyanto Mujiyanto, Wilson L. Tisera, Yayuk Sugianti, and Sri Endah Purnamaningtyas
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Ecology ,Ecology, Evolution, Behavior and Systematics ,Nature and Landscape Conservation - Abstract
Tunda Island has three potential coastal ecosystems, but they would not be sustainable for the organism when the oceanographic condition is under the quality standards. The research aims to study hydrooceanography as the first profile Marine Conservation Area management plans at Tunda island explains in Zonation Plans on Coastal Areas and Small Island Banten Province. In general, the waters profile condition will describe how it can contribute to the primary productivity of other organisms. Collected the sampling method was in July and November 2020, and the sampling method used purposive sampling on 45 stations across the island. The result of the data analysis from each parameter was the depth of water has ranged from 0.5-52.4±1.14 meters, water transparency from 0.5-13.3±0.25 meters, waters temperature was 29.97- 31.16±0.32 °C, DO was 6.63-8.41±0.31 mg/l, pH from 6.83-7.92±0.25, salinity was 31.6-33.8±0.55 â°, TDS was 13.8-15.8±0.39 mg/l, conductivity was 22.7-24.8±0.36 mS/cm and ORP from 149-186±7.03 mV. Believed the difference in water quality conditions among stations to be due to differences in the typology of water conditions and currents from the Sunda Strait and the flow of particles from mainland Serang. Where northern and western sides are associated with several small islands and lead to the mainland of Serang. Wheres, south and east sides are directly waters related to the Sunda Strait. The hydro-oceanographic can be used as data and information to develop activities like MPAs plans in Tunda Island waters.
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- 2022
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7. Water Quality and Eutrophication in Jatiluhur Reservoir, West Java, Indonesia
- Author
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Lismining Astuti, Yayuk Sugianti, Andri Warsa, and Agus Sentosa
- Subjects
Environmental Chemistry ,General Environmental Science - Published
- 2022
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8. Identifikasi Alat-Alat Tangkap Ikan Sidat (Anguilla spp.) dan Hubungannya dengan Hasil Tangkapan di Sungai Cikaso
- Author
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Yayuk Sugianti
- Published
- 2021
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9. Reef fish community structure in the islands of Paraja Bay, Pandeglang District, Banten, Indonesia
- Author
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Amran Ronny Syam, R. Arief Budikusuma, Mujiyanto Mujiyanto, Adriani Sri Nastiti, Yusuf Arief Afandy, Sri Endah Purnaningtyas, Yayuk Sugianti, and Risnawati Rahayu
- Subjects
geography ,geography.geographical_feature_category ,Coral reef fish ,Community structure ,Biodiversity ,Plant Science ,Fishery ,Diversity index ,Abundance (ecology) ,Dominance (ecology) ,Animal Science and Zoology ,Molecular Biology ,Reef ,Bay - Abstract
Mujiyanto, Sugianti Y, Afandy YA, Rahayu R, Bidikusuma RA, Nasriri AS, Syam AR, Purnaningtyas SE. 2021. Reef fish community structure in the islands of Paraja Bay, Pandeglang District, Banten, Indonesia. Biodiversitas 22: 4402-4413. Paraja Bay waters have five small islands that coexist with Ujung Kulon National Marine Park and act as a buffer zone for the diversity of fishery resources. This study aimed to assess the reef fishes community structure at small islands in Paraja Bay. Observations were made in 20 locations during August and September 2019 in the five small islands. Reef fishes community structure showed 106 species as included major group (54 species), indicator group (24 species) and target group (28 species), among five small islands, i.e. Badul, Mangir, Oar, Sumur and Umang Islands. The highest reef fishes abundance was founded in Umang Island waters. Several target fish species recorded during the study were mature fish (such as those targeted by fishermen). Only a small proportion were juveniles. Reef fish community structure was categorized as stress community to stable community with its indication was low diversity value, high evenness index, and low dominance. The low diversity index value illustrates that the level of uniformity of reef fish species in Paraja Bay waters is high. This condition is evidenced by each coral fish group's evenness index included in the main species group around 0.93 to 0.98. The target species is 0.88 to 0.99.
- Published
- 2021
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10. Spesies Ikan Sidat (Anguilla spp.) dan Karakteristik Habitat Ruayanya di Sungai Cikaso, Sukabumi, Jawa Barat
- Author
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Yayuk Sugianti, Sri Endah Purnamaningtyas, and Masayu Rahmia Anwar Putri
- Abstract
Muara sungai menjadi tempat awal yang penting untuk ikan Sidat beruaya ke perairan sungai. Beberapa muara sungai yang ada di pesisir pantai Sukabumi menjadi daerah aktivitas penangkapan ikan Sidat yang tinggi, salah satunya adalah Sungai Cikaso. Penelitian ini bertujuan untuk mengetahui karakteristik habitat ikan Sidat dan faktor kualitas air yang memengaruhi kehidupan ikan Sidat di Sungai Cikaso. Penelitian dilakukan pada musim hujan (Maret 2019) dan musim kemarau (Agustus 2019). Penangkapan benih ikan Sidat menggunakan alat tangkap sirib dan ikan Sidat dewasa menggunakan alat tangkap bubu, pancing, jamparing dan kopyokan, serta pengamatan kualitas air dilakukan di tujuh stasiun penelitian yang dilalui selama ikan Sidat beruaya. Benih ikan Sidat diidentifikasi secara morfometrik dan perbedaan pigmentasi warna diamati di bagian sirip ekor. Dua spesies ikan Sidat ditemukan selama penelitian, yaitu Anguilla bicolor bicolor dan Anguilla marmorata yang teridentifikasi dari fase benih hingga ikan Sidat dewasa. Sebaran ikan Sidat di sepanjang Sungai Cikaso selama penelitian ditemukan dalam empat stadia siklus hidup, yaitu benih ikan Sidat, ikan Sidat berpigmen, ikan Sidat muda, dan ikan Sidat dewasa. Secara keseluruhan, ketujuh stasiun penelitian mempunyai karakteristik habitat perairan yang sama dalam mendukung kehidupan ikan Sidat. Keberadaannya di perairan dicirikan oleh parameter kualitas air seperti suhu air, kekeruhan, TDS, kecepatan arus, salinitas, oksigen terlarut, alkalinitas, dan pH perairan. Namun, fenomena muara sungai yang tertutup pada saat musim kemarau menyebabkan air sungai tidak mengalir menuju ke laut. Kondisi ini sangat memengaruhi pola ruaya ikan Sidat, yaitu menghambat pergerakan benih ikan Sidat dari laut menuju ke sungai. Oleh karena itu, solusi perlu dicari agar ruaya semua spesies ikan Sidat yang masuk ke Sungai Cikaso tetap terjaga.
- Published
- 2020
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11. BIODIVERSITAS IKANKARANG DI PERAIRANTAMANNASIONALKARIMUNJAWA, JEPARA
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Yayuk Sugianti and Mujiyanto Mujiyanto
- Subjects
lcsh:SH1-691 ,Taman Nasional Karimunjawa ,lcsh:Zoology ,ikan karang ,lcsh:QL1-991 ,Biodiversitas ,lcsh:Aquaculture. Fisheries. Angling - Abstract
Taman Nasional Karimunjawa merupakan salah satu kawasan pelestarian alamdi Kabupaten Jepara, dikelola dengan sistemzonasi yang dapat dimanfaatkan untuk tujuan penelitian, ilmu pengetahuan, pendidikan,menunjang budidaya, pariwisata dan rekreasi. Terumbu karang dan komunitas ikannyamerupakan ekosistemyang kompleks dengan keanekaragaman hayati yang tinggi. Penelitian ini bertujuan untukmengetahui kelimpahan dan biodiversitas ikan karang yang tersebar di zona inti, zona perlindungan dan zona pemanfaatan Taman Nasional Karimunjawa, Jepara. Penelitian dilakukan dengan metode transek 2,5 meter x 2,5 meter. Pencatatan jenis dan penghitungan ikan menggunakan metode sensus visual. Hasil yang diperoleh dari pengamatan ikan karang di zona inti, zona perlindungan dan zona pemanfaatan adalah ditemukannya 10 famili dengan 59 spesies dan 1369 individu ikan karang di ketiga lokasi penelitian, dengan rincian ikan karang di zona inti ditemukan 9 famili, 25 spesies dan 491 individu, di zona perlindungan terdapat 6 famili, 29 spesies dan 370 individu ikan karang dan terakhir di zona pemanfaatan ditemukan 5 famili, 27 spesies dan 508 individu ikan karang. Distribusi jenis ikan karang di zona perlindungan dan zona pemanfaatan lebih tinggi dibandingkan dengan di zona inti. Tingginya jumlah jenis ikan karang di zona perlindungan dan zona pemanfaatan dikarenakan bervariasinya habitat yang terdapat di terumbu karang. Kelimpahan spesies ikan karang tertinggi di tiga lokasi penelitian adalah Pomacentrus alexanderae sebesar 222 ind/m2. Karimunjawa National Parks is one of nature conservation area in the district of Jepara, which is managed by the zoning system can be utilized for the purpose of research, science, education, culture, tourism and recreation. Coral reefs and fish communities is a complex ecosystem with high biodiversity. The aims of this study is to determine abundance and biodiversity of reef fish species are scattered in the core zone, protection zone and utilization zone in Karimunjawa National Parks, Jepara. The research was conducted by transect 2.5 meters x 2.5 meters. Recording types and counting fish used visual census method. The results obtained from observations of reef fishes in the core zone, buffer zone and the zone was the discovery of 10 families with 59 species and 1369 individual reef fish in all three study sites, with details in the core zone of reef fish found 9 families, 25 species and 491 individuals, protection zone there are 6 families, 29 species and 370 individuals and last in the utilization zone reef fish found 5 families, 27 species of reef fish and 508 individuals. The distribution of reef fish species in protection zone and utilization zone higher than in core zone The high number of species of reef fish in the protection zone and utilization zone because of varied habitats found in coral reefs. The high abundance of species of reef fish in three research sites is Pomacentrus alexanderae of 222 ind/m2.
- Published
- 2016
12. Respon Oksigen Terlarut Terhadap Pencemaran dan Pengaruhnya Terhadap Keberadaan Sumber Daya Ikan di Sungai Citarum
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Yayuk Sugianti, Lismining Pujiyani Astuti, and Research Institute for Fish Enhancement
- Subjects
General Medicine - Abstract
The concentration of dissolved oxygen (DO) be the most attention parameter because can reflect the water quality and the health of aquatic ecosystems. Along the main flow of Citarum river conditions are already heavily polluted due to waste input both household and urban waste, industrial waste, agricultural waste and livestock also, this conditions causes disruption for organism that are inside, one of them is fish. The purpose of this study was to determine changes in water quality due to pollution through the distribution pattern of the DO concentration by performing simulations using models Streeter & Phelps and their effects on fish life in the Citarum River. The results showed the high value of BOD in Citarum River led to a DO decrease, which indicates that this river has been under pressure utilization that exceeds the carrying capacity. This condition affects the presence of fish in Citarum river,where there has been a reduction the types of fish. Only fish that are resistant to low DO conditions that can survive in Citarum river. Keywords : dissolved oxygen, Streeter Phelps model, Citarum River ABSTRAK Konsentrasi oksigen terlarut (DO) menjadi parameter yang paling banyak mendapat perhatian karena mencerminkan kualitas air dan kesehatan suatu ekosistem perairan. Sepanjang aliran sungai utama Citarum kondisi perairannya sudah tercemar berat diakibatkan masukan limbah, baik itu limbah rumah tangga dan perkotaan, limbah industri, juga limbah pertanian dan peternakan, kondisi ini menyebabkan gangguan bagi organisme yang ada di dalamnya salah satunya adalah ikan. Tujuan penelitian ini adalah mengetahui perubahan kualitas perairan akibat pencemaran melalui pola sebaran konsentrasi DO dengan melakukan simulasi menggunakan model Streeter & Phelps dan pengaruhnya terhadap kehidupan ikan di Sungai Citarum. Hasil penelitian menunjukkan tingginya nilai BOD di Sungai Citarum menyebabkan penurunan DO, yang mengindikasikan bahwa sungai ini telah mengalami tekanan pemanfaatan yang melebihi daya dukungnya. Kondisi ini berpengaruh pada keberadaan ikan di Sungai Citarum, dimana telah terjadi pengurangan jenis-jenis ikan. Hanya ikan-ikan yang tahan terhadap kondisi DO rendah yang bisa bertahan hidup di Sungai Citarum. Kata kunci : oksigen terlarut, model Streeter Phelps , Sungai Citarum.
- Published
- 2018
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13. BEBERAPA ASPEK BIOLOGI IKAN NILEM (Osteochillus vittatus) DI DANAU TALAGA, SULAWESI TENGAH
- Author
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Yayuk Sugianti, Masayu Rahmia Anwar Putri, and Krismono Krismono
- Subjects
lcsh:SH1-691 ,pola pertumbuhan ,lcsh:Zoology ,General Earth and Planetary Sciences ,makanan ,kematangan gonad ,fekunditas ,Nilem ,lcsh:QL1-991 ,tipe pemijahan ,lcsh:Aquaculture. Fisheries. Angling ,General Environmental Science - Abstract
Ikan nilem (Osteochillus vittatus) merupakan ikan introduksi diDanau Talaga,Kabupaten Donggala, Sulawesi Tengah. Studi tentang biologi populasi suatu spesiesakanmembantu dalammemahami pengelolaannya. Penelitian ini bertujuan untukmengetahui beberapa aspek biologi ikan nilem(Osteochillus vittatus)sebagai informasi dasar dalam langkah pengelolaan sumberdaya ikan di Danau Talaga. Penelitian ini dilaksanakan pada bulan Maret, Mei, Juli dan Oktober Tahun 2013. Sampel ikan nilem diperoleh dengan melakukan percobaan penangkapan menggunakan 2 set jaring insang (ukuran mata jaring 1, 1½, 2, 3 dan 4 inci). Ikan yang didapat, diukur panjang total (cm) dan beratnya (g). Pengamatan isi perut dan gonad dilakukan di laboratorium Biologi Ikan, Balai Penelitian Pemulihan dan Konservasi Sumberdaya Ikan.Ikan nilem merupakan ikan yang dominan tertangkap di Danau Talaga dengan kisaran ukuran panjang antara 11-22,7 cmdan ukuran berat antara 15,79 – 171,43 g, dimana ikan dengan kelompok panjang antara 14-15 cmmendominasi tangkapan. Pola pertumbuhan ikan nilembersifat alometrik negatif. Ikan nilemdikategorikan sebagai ikan herbivor dengan makanan utamanya adalah tumbuhan. Ikan nilem yang dominan tertangkap berada pada tingkat kematangan gonad (TKG) IV, dimana ukuran pertama kali matang gonad (Lm) baik jantan atau betina lebih kecil dibandingkan Lm ikan nilem pada beberapa referensi. Hal ini mengindikasikan bahwa ikan nilem di Danau Talaga matang gonad pada ukuran yang lebih kecil. Tipe pemijahan ikan nilemdi Danau Talagaadalah total spawner dan dapat memijah sepanjang tahun.Bonylip barb (Osteochillus vittatus) was one of introduction fish species in Sulawesi waters, including Lake Talaga, Donggala,Central Sulawesi. Study on biology populationof species will assist in understanding of its management. The aim of this research is to know some biological aspects of bonylip barb as basic information in fish resource management of Lake Talaga. The researchwas conducted on March, May, July and October 2013. The fish samples werecaptured by 2 sets experimental gillnet(mesh size 1, 1½, 2, 3 and 4 inch). These samples then measured its length and weight. The stomach content and gonad was observed at biological laboratory of Research institute for Fisheries Enhancement and Conservation. Bonylip barb is a dominant fish at Lake Talaga with the length range between 11-22.7 cm and weight range between 15.79 – 171.43 g. The fishes with the length group 14-15 cm were dominatedin fish catch. Bonylip barbwas an herbivore fish with plants as the main food. Thefish with stage IV of gonadsmaturitywere dominated, with the first length of maturity (Lm) in Lake Talagawas smaller than other references, either male or female fish.It was indicatedthat in Lake Talaga, bonylip barb fishwas matured in smaller size. Thebonylip barb is a total spawner and the spawning period of it may occurred throughout the year.
- Published
- 2015
14. EXECUTIVE SUMMARY Rencana Pengelolaan dan Zonasi (RPZ) Kawasan Konservasi Pulau Tunda Dan Pulau Pamujan Besar Kab. Serang Prov. Banten
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Mujiyanto Mujiyanto, Ehsanpour, Maryam, Yayuk Sugianti, Desita Anggraeni, Desy Putri Susanti, Hesti Roniawan, and M. Nurkholis Fauzi
- Published
- 2018
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15. EVALUASI KESUBURAN EKOSISTEM PADANG LAMUN DENGAN MENGGUNAKAN BIOINDIKATOR FITOPLANKTON DI PULAU KARIMUNJAWA, JAWA TENGAH
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Yayuk Sugianti
- Subjects
General Medicine - Abstract
Ekosistem padang lamun mempunyai fungsi yang sangat penting sebagai stabilitas dan penahan sedimen, mengembangkan sedimentasi, mengurangi dan memperlambat pergerakan gelombang, sebagai daerah feeding, nursery, dan spawning ground. Namun pemanfaatannya ternyata telah menimbulkan permasalahan pencemaran dan mengakibatkan kerusakan. Untuk mengantisipasi permasalahan tersebut digunakanlah fitoplankton sebagai bioindikator, karena beberapa organisme fitoplankton bersifat toleran dan mempunyai respon yang berbeda terhadap perubahan kualitas perairan. Tujuan dari penelitian ini adalah menentukan tingkat kesuburan dan pencemaran air pada ekosistem lamun di perairan Pulau Karimunjawa. Penelitian dilakukan pada 4 stasiun yaitu Ujung Gelam, Legon Lele, Menjangan Besar, dan Cikmas. Berdasarkan hasil penelitian Tingkat kesuburan pada ekosistem lamun di perairan Pulau Karimunjawa berdasarkan bioindikator fitoplankton termasuk dalam kondisi sedang, dengan tingkat pencemaran ringan. Adanya jenis fitoplankton dominan Nitzschia sp dari kelas Bacillariophyceae perlu diantisipasi keberadaannya supaya tidak menimbulkan dampak negatif bagi organisme di dalamnya. Karena fitoplankton jenis ini terbukti menjadi sumber asam domoic (DA) yang beracun dan sangat berbahaya bagi manusia, mamalia laut, dan burung laut.Kata Kunci : bioindikator, fitoplankton, padang lamun
- Published
- 2016
16. PENGELOLAAN PERIKANAN DI DANAU LIMBOTO PASCA PENGERUKAN
- Author
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Krismono Krismono, Andika luky Setiyo Hendrawan, Yayuk Sugianti, and Amula Nurfiarini
- Abstract
Danau Limboto di Propinsi Gorontalo termasuk danau kritis yang disebabkan karena sedimentasi/pendangkalan, eutrofikasi dan gulma air eceng gondok. Pada 2013 di Danau Limboto telah dilakukan program pengerukan dan tanah hasil pengerukan dijadikan tanggul penahan air mengelilingi danau. Tulisan ini bertujuan untuk mendapatkan pola pengelolaan perairan Danau Limboto pasca pengerukan. Penelitian perikanan di Danau Limboto telah dilakukan sebelum pengerukan sejak tahun 2006 – 2010 dan sesudah pengerukan pada periode 2014 – 2016. Pelaksanan pengerukan dan pembuatan tanggul di Danau Limboto menyebabkan terjadi perubahan ekologis yang penting yaitu; pendalaman air, tanggul penahan air, habitat lumpur yang terangkat ke atas dan tertutupnya wilayah ruaya ikan yang bermigrasi.Limboto Lake in Gorontalo Province belongs a critical lake caused by sedimentation, eutrophication and water hyacinth ). The dredging program had been initiated at Limboto lake since 2013 and dredged soil has been used as water-retaining embankments around the lake. This paper aim was to derive the management pattern of Limboto lake waters after dredging. Fisheries research was conducted at Limboto lake during before dredging during 2006 - 2010 and after dredging program. During 2014 – 2016. Implementation of dredging and embankment construction in Limboto Lake , hence has caused an important ecological changes that is; Water depths, water retention embankment, uplifted mud habitat and the closure of migratory fish beeding areas.
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- 2018
- Full Text
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17. The outbreak of Chochlodinium sp.: the red tide maker in the coastal of Lampung Bay
- Author
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R Puspasari, Rizki A. Adi, Widodo S. Pranowo, Yayuk Sugianti, A Rustam, and S S Sagala
- Subjects
education.field_of_study ,Nutrient ,Oceanography ,Abundance (ecology) ,Red tide ,Population ,Phytoplankton ,Outbreak ,Environmental science ,Seawater ,education ,Bay - Abstract
Red tide is a common phenomenon and almost present every year in Lampung Bay. In 2012, the red tide in Lampung Bay showed a different characteristic compared to the previous ones. The research was conducted to analyze the characteristics of organisms causing the red tide and the factors affecting its occurrence. Assessments were done by identifying the dominant phytoplankton and observing the environmental condition using rapid assessment method. Seawater sampling was conducted in 15 stations in December 2012 to monitor the phytoplankton abundance, nutrient, and physical condition. The results showed that the organism dominating the phytoplankton population is Cochlodinium sp., comprising of 85.89% of the total phytoplankton suggesting it was the red tide organism in the Bay. The average abundance of this species in the stations was 2.0 × 104cells/L. Choclodinium sp. was present agglomerated and distributed along the west coast of the bay. The highest concentration of the organism was found around the tip of the bay. The outbreaks of Choclodinium sp. were induced by the high concentration of nitrogen in the coastal water with N:P ratio of 35.5. Moreover, the physical condition of the coastal water strongly influenced the distribution and abundance of Cochlodinium sp. in the bay.
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- 2018
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18. PENANGKAPAN IKAN DI SUNGAI MARO, MERAUKE
- Author
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Hendra Satria and Yayuk Sugianti
- Subjects
General Earth and Planetary Sciences ,General Environmental Science - Abstract
Sungai Maro berada di Wilayah administrasi Kabupaten Merauke Propinsi Papua berfungsi untuk kegiatan transportasi dan perikanan tangkap sehingga merupakan salah satu sungai di Kabupaten Merauke yang memberi kontribusi perikanan yang besar antara lain merupakan daerah penangkapan ikan arwana Irian (Sclerophages jardini). Penelitian bertujuan untuk mengetahui jenis ikan, alat tangkap, status, dan aspek sosial ekonomi sebagai informasi yang berguna untuk mendukungkonstribusi dalam pengelolaan perikanan di Sungai Maro, Merauke. Penelitian dilakukan dengan metode survei dan wawancara pada bulan April, Juli, September, dan Nopember 2006. Lokasi penelitian ditentukan berdasarkan pada daerah yang merupakan sentra ikan arwana yaitu Toray, Bupul, Kweel, Barkey, Kaliwango (Distrik Sota), dan Tanas (Distrik Elikobel). Hasil penelitian menunjukkan bahwa hasil tangkapan terdapat 19 jenis ikan dengan 8 macam alat tangkap. Penangkapan ikan di Sungai Maro belum optimal karena nelayan banyak menggunakan alat tangkap tradisional.
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- 2017
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19. JENIS-JENIS PLANKTON YANG DITEMUKAN DI SUNGAI MARO, MERAUKE
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Yayuk Sugianti and Hendra Satria
- Subjects
General Earth and Planetary Sciences ,General Environmental Science - Abstract
Sungai Maro berada di wilayah administrasi Kabupaten Merauke dan merupakan salah satu sumber kekayaan plasma nutfah ikan asli Papua. Ikan-ikan yang terdapat di sungai ini berpotensiuntuk dikembangkan sebagai ikan konsumsi, untuk itu potensi dan pemanfaatannya perlu dikelola dengan sebaik-baiknya. Salah satu kriteria penting untuk meningkatkan sumber daya perikanan adalah data ketersediaan pakan alami seperti plankton. Tujuan dari penulisan ini adalah untuk memberikan informasi jenis-jenis plankton yang terdapat di Sungai Maro, Merauke selama pengamatan tahun 2007. Dari hasil penelitian Loka Riset Pemacuan Stok Ikan tahun 2007, kelas Chlorophyceae memiliki persentase jumlah paling tinggi dibandingkan kelas-kelas plankton lain nya (38%). Genera plankton yang ditemukan selama pengamatan didominasi oleh fitoplankton dari kelas Chlorophyceae, yaitu (Staurastrum sp., Ulotrix sp., dan Tetraedron sp.), serta Bacillariophyceae,(Asterionella sp.) dan Cyanophyceae (Oscillatoria sp.).
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- 2017
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20. TUMBUHAN AIR DI DANAU LIMBOTO, GORONTALO: MANFAAT DAN PERMASALAHANNYA
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Astri Suryandari and Yayuk Sugianti
- Subjects
General Earth and Planetary Sciences ,General Environmental Science - Abstract
Danau Limboto cenderung semakin hari, semakin menurun luasnya. Luas danau pada tahun 1932 mencapai 8.000 ha, pada tahun 1970 menurun menjadi 4.500 ha. Pada tahun 1993, perairan ini mengalami penurunan luasnya menjadi 3.057 ha dengan kedalaman maksimumnya 2,3 m dan pada tahun 2004 tersisa 3.000 ha. Masalah pendangkalan dengan laju sedimentasi 1,5 cm per tahun dan perkembangan populasi tumbuhan air (rumput liar dan eceng gondok, Eichhornia crassipes) yang telah mencapai luas 9.420 m2menjadi ancaman bagi sumber daya perikanan di danau tersebut. Tujuan dari tulisan ini adalah untuk mengetahui jenis tumbuhan air serta menggambarkan kondisinya di Danau Limboto beserta manfaat dan permasalahannya. Hasil pengamatan menunjukkan bahwadi Danau Limboto ditemukan 9 jenis tumbuhan air, meliputi tipe tumbuhan yang muncul di tepian danau, yang tenggelam dan berakar di dasar, dan yang mengapung bebas ataupun yang berakar. Jenis tumbuhan yang dominan adalah eceng gondok yang telah menjadi gulma.
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- 2017
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21. SEBARANLONGITUDINAL FITOPLANKTONDI SUNGAIMARO, KABUPATENMERAUKE, PROVINSI PAPUA
- Author
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Lismining Pujiyani Astuti and Yayuk Sugianti
- Subjects
General Earth and Planetary Sciences ,General Environmental Science - Abstract
Sungai Maro merupakan salah satu sungai besar di Kabupaten Merauke, berfungsi sebagai habitat ikan hias yang bernilai ekonomis penting yaitu ikan arwana (Scleropages jardinii) dan kakap batu (Datnioide aquadraticus). Wilayah sekitar sungai merupakan rawa-rawa yang merupakan habitat ikan arwana terutama di wilayah tengah sampai hulu sungai. Fitoplankton merupakan produser dan pakan alami beberapa jenis ikan di SungaiMaro. Tujuan penelitian ini untuk mengetahui sebaran longitudinal fitoplankton yang ada di SungaiMaro, Kabupaten Merauke. Penelitian ini dilakukan dengan survei dan pengambilan contoh dilakukan pada bulan Desember 2007 di lima stasiun pengamatan pada lokasi pemijahan ikan arwana di ruas Sungai Maro. Parameter yang dianalisis adalah komposisijenis dan kelimpahan fitoplankton. Hasil pengamatan di lima stasiun pengamatan, ditemukan lima kelas fitoplankton yang terdiri atas kelas Chlorophyceae (14 genus), Cyanophyceae (satu genus), Bacillariophyceae (tujuh genus), Dinophyceae (dua genus), dan Euglenaphyceae (satu genus), dengan kelimpahan fitoplankton berkisar 49.294- 66.396 ind./L. Persentase fitoplankton tertinggi dari ruas atas sampai bawah adalah Staurastrum dominan dari Stasiun Barkey danWeloyah, Synedra di Stasiun Mouwer dan Toray, Ulothrix di Stasiun Kaliwanggo. Sedangkan urutan keberadaan kelas fitoplankton dari ruas atas sampai bawah di SungaiMaro adalah Chlorophyceae di StasiunBarkey, Weloyah, dan Mouwer, kemudian Bacillariophyceae di Stasiun Toray dan Chlorophyceae di Stasiun Kaliwanggo. Maro River is one of big river inMerauke Regency and serve as ornamental fish habitat of arowana (Sleropages jardinii) and Datnioides aquadraticus that economically has high value. Around of this river are wetland area that is arwana habitat mainly at middle and upper river. Phytoplankton is natural feed producer for several fishes species at Maro River. Aim of this paper was to know longitudinal distribution of phytoplankton atMaro River. The research was conducted by survey method and sampling was conducted in December 2007 at 5 sampling stations on arwana fish spawning sites located at Maro River. The parameters were analyzed include composition and abundance of phytoplankton. Result showed that at five sampling stations were found 5 classes of phytoplankton which consists of the class Chlorophyceae (14 genera), Cyanophyceae (1 genera), Bacillariophyceae (7 genera), Dinophyceae (2 genera), and Euglenaphyceae (1 genera) with the abundance of phytoplankton ranges from 49,294- 66,396 ind./L. The highest percentage of phytoplankton in each station was found from upper to lower segment was Staurastrum found at Barkey and Weloyah Synedra at Mouwer and Toray, Ulothrix at Kaliwanggo. While the presence of phytoplankton class was found from upper to lower on Maro River was Chlorophyceae at Barkey, Weloyah, andMouwer, Bacillariophyceae at Toray and Chlorophyceae at Kaliwanggo.
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- 2017
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22. KARAKTERISTIK KUALITAS AIR DANAU LIMBOTO, PROVINSI GORONTALO
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Krismono Krismono, Yayuk Sugianti, and Lismining Pujiyani Astuti
- Abstract
Danau Limboto terletak pada ketinggian 25 m di atas permukaan laut yang berada di Kabupaten Gorontalo, Provinsi Gorontalo. Danau ini berfungsi untuk perikanan tangkap, perikanan budi daya, dan pengendalian banjir. Kualitas air merupakan kunci penting bagi kehidupan ikan dan salah satu masukkan penting untuk pengelolaan kegiatan perikanan. Penelitian ini bertujuan untuk mengetahui keadaan kualitas air Danau Limboto. Penelitian ini dilaksanakan pada bulan Maret, Mei, September, dan Nopember 2006. Pengambilan contoh air dilakukan di lima stasiun pengamatan dengan metode survei berstrata. Hasil penelitian menunjukkan bahwa suhu, pH, alkalinitas total, oksigen terlarut, dan karbondioksida bebas Danau Limboto mendukung untuk kegiatan perikanan. Berdasarkan pada tingkat kecerahan, N-NO3, P-PO4, klorofil-a, dan kelimpahan plankton, danau ini termasuk ke dalam perairan eutrofik hingga hipertrofik (subur). Limboto Lake is located in Gorontalo District, Gorontalo Province at 25 m above sea level. The lake functions as capture and culture fisheries and flood control. Water quality is an important environmental factors for fisheries management. The objective of this research was to identify the water quality characteristic of Limboto Lake. Research was done at March, May, September, and November 2006. Water samples was taken in each research stations using survey stratified method. The results showed that temperature, pH, total alkalinity, dissolved oxygen, and free carbon dioxide were in the level of supporting the fisheries activity. Based on transparency, N-NO3, P-PO4, chlorophylla, and abundance of plankton, the lake was catagorized as eutrophic to hypertrophic waters.
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- 2017
- Full Text
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23. Jenis-Jenis Ikan Ekonomis Penting Di Perairan Karang Kepulauan Karimunjawa, Jawa Tengah
- Author
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Mujiyanto Mujiyanto, Amran Syam, and Yayuk Sugianti
- Published
- 2013
- Full Text
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