Sahidin A, Zahidah, Herawati H, Wardiatno Y, Setyobudiandi I, Partasasmita R. 2018. Macrozoobenthos as bioindicator ofecological status in Tanjung Pasir Coastal, Tangerang District, Banten Province, Indonesia. Biodiversitas 19: 1123-1129. Theexistence of macrozoobenthos organism allow for bioindicator of ecological status and detected water pollution in coastal environmentwith observing the response, diversity, and abundance. The one of biological method for water quality analysis is AZTI Marine BioticIndex (AMBI). This research aims to determine water quality status in Tanjung Pasir water coastal Tangerang, Banten. The research wasconducted in April - August 2014 in Tanjung Pasir Coastal, Tanggerang, Banten with purposive sampling method and be forwarded withwater pollution analysis with AZTI Marine Biotic Index (AMBI) model. The research showed 4.552 individual of macrozoobenthosfound divided into 52 species with the average of diversity amount 634 ind./m2 with dominated by bivalve species Nuculana bicuspidate22.89%, it is a bivalve an extreme species that can live in waters with very low oxygen concentrations and hight pollution. The result ofAMBI (4.01 to 5.02) indicates water pollution in Tanjung Pasir Coastal classified in medium-heavy pollution and concentred in coastalzone. Polychaeta is a key bioindicator in the determination of water pollution and ecological status in Tanjung Pasir coastal.
Abstract. Andriani Y, Dhahiyat Y, Zahidah, Zidni I. 2016. The effect of stocking density ratio of fish on water plant productivity in aquaponics culture system. Nusantara Bioscience 8: xxxx. This study aims to determine the productivity of water plants at various stocking density ratios in the aquaponic culture system. This study is conducted experimentally using the Completely Randomized Design with the differences in the treatment of stocking density ratio, each repeated five times. The treatments of the stocking density ratio of both the catfish fry and the Nile tilapia fry include: A (75:75 fry/m 2 ), B (100:50 fry/m 2, and C (125:25 fry/m 2 ). The observed parameters are 1) plant productivity including measuring the growth of water spinach and growth rate, covering weight gain, stem length and number of leaves, and 2) water quality, including dissolved oxygen (DO), nitrate and phosphate. The data of plant productivity is analyzed descriptively while the water quality is analyzed using ANOVA. The result of this study shows that the stocking density ratio significantly affects the productivity of water plants and the water quality of the media. The highest productivity of water spinach productivity occurs at the stocking density ratio of 75 catfish fry/m 2 : 75 Nile tilapia fry m 2 , at which the average stem length is 59.14 cm, average number of leaves is 13.67, and the harvest weight is 465 g. Fish stocking density ratio also affects the quality of water, where the synergy between fish farming and water plant growing results in the better water quality compared to fish farming without water plant. The highest quality of water is achieved at the stocking density ratio of 100 catfish fry/m 2: 50 Nile tilapia fry/m 2 .
Pangandaran rocky shores have a unique ecosystem and a variant of invertebrate organisms such as mollusk from the gastropod class. This study aims to analyze the biodiversity of gastropods on the rocky shore of Karapyak beach. This research consists of 5 stations. The quadrant set by 1 m x 1 m vertically toward the sea. The result found 773 individuals scattered in nine families. The family of Neritidae dominated (43%), followed by family cyprinoids with 6.3%. Nerita plicata is a species found to dominate in every station with an average abundance (256 ± 10) and/m2. Using the Bray-Curtis cluster analysis, showed variations in the distribution and abundance of different gastropods vertically into the ocean and uniformly distributed horizontally to the shore. Substrate and tidal are the main variables in the spatial distribution of gastropods in the Karapyak beach.
<p align="center"><strong>Abstract</strong><strong></strong></p><p>Aquaponics is new aquaculture integrating the technology of fishes and plants due to less availability of land. This study aimed to determine the optimum retention period in the aquaponics farming of sangkuriang catfish (<em>Clarias gariepinus</em>) integrated with water spinach (<em>Ipomoea reptan</em>) to generate the water to support the catfish production. This study conducted in 40 days between May to June 2016 at Ciparanje Fish Hatchery Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. The design of this study was completely randomized, with five treatments and three replications. The treatments retention periods were 5, 10, 15, 20 minutes, and control (no water flow). The study showed that the retention period affected water spinach’s inorganic nutrient absorption in sangkuriang catfish farm. The 15 minutes retention period gave the most desirable result, with a flow of 0.072 L/s that reduced 58.83% of nitrate, and 33.32% of ammonia has been produced by fish farming activities. The highest specific growth rate of the sangkuriang catfish obtained in 15 minute retention period of 4.01 %</p><p> </p><p>Keywords: aquaponics, sangkuriang catfish, water spinach, retention periods</p><p> </p><p> </p><p align="center"><strong>Abstrak</strong></p><p>Akuaponik adalah teknologi akuakultur baru yang mengintegrasikan ikan dan tanaman karena ketersediaan lahan yang semakin rendah. Penelitian ini bertujuan untuk menentukan periode retensi optimum pada budidaya akuaponik ikan lele sangkuriang (<em>Clarias gariepinus</em>) yang terintegrasi dengan kangkung air (<em>Ipomoea reptan</em>) untuk menghasilkan air yang mendukung produksi lele. Penelitian ini dilakukan selama 40 hari di Laboratorium Budidaya Ikan Ciparanje, Fakultas Perikanan dan Ilmu Kelautan, Universitas Padjadjaran. Penelitian ini menggunakan rancangan acak lengkap, dengan lima perlakuan dan tiga kali ulangan. Perlakuan berupa periode retensi 5, 10, 15, 20 menit, dan kontrol (tidak ada aliran air). Hasil penelitian menunjukkan bahwa periode retensi memengaruhi penyerapan nutrisi anorganik oleh bayam air dalam budidaya ikan lele sangkuriang. Periode retensi 15 menit memberikan hasil yang paling baik, dengan aliran 0,072 L/s mengurangi 58,83% nitrat, dan 33,32% amonia dalam media budidaya ikan. Laju pertumbuhan spesifik ikan lele sangkuriangtertinggi diperoleh pada perlakuan waktu retensi 15 menit, yaitu sebesar 4,01%. </p><p> </p><p>Kata kunci: akuaponik, ikan lele sangkuriang, kangkung darat, waktu retensi</p><p> </p><p> </p>
Reservoir inlet. The Cilalawi River receives pollutant from households, as well as agriculture around the river. Utilization of the river as a waste disposal site is the impact of community activities on the environment that causes changes in environmental factors that will adversely affect the life of aquatic organisms. This research aims to map the spatial distribution of macrozoobenthos community along the Cilalawi River. This research was conducted from March-May 2019. The research method used a survey method by taking water and macrozoobenthos samples along the Cilalawi River. Data collection techniques using purposive sampling by setting 4 stations and four times sampling every two weeks. Based on the observation location, composition at station 1 consisted of 3 classes and 12 species of macrozoobenthos. The composition at station 2 consists of 3 classes and 10 species. Composition at station 3 consists of 3 classes and 16 species and composition at station 4 consists of 2 classes and 7 species. The difference in species deficit value at each station is different, this is influenced by physical and chemical parameters according to conditions around the aquatic environment. The index of diversity in the Cilalawi River ranges from 1,59 – 2,94 and the Uniformity Index of the Cilalawi River ranges from 0,2 to 0,9. The distribution pattern of makrozoobentos in the waters of the Cilalawi River based on the Morisita Index is uniform and grouped at station 1 to station 4 Keywords: Distribution, Makrozoobenthos, Cilalawi River, Jatiluhur, Pollutant ABSTRAKSungai Cilalawi merupakan salah satu anak Sungai Citarum yang menjadi inlet Waduk Jatiluhur. Sungai Cilalawi menerima buangan limbah yang berasal dari rumah tangga, serta pertanian yang berada di sekitar aliran sungai. Pemanfaatan Sungai untuk pembuangan limbah merupakan dampak dari aktivitas masyarakat terhadap lingkungan yang menyebabkan perubahan faktor lingkungan yang akan berakibat buruk bagi kehidupan organisme air. Riset ini bertujuan untuk memetakan distribusi spasial makrozoobentos di sepanjang aliran Sungai Cilalawi. Riset ini dilakukan dari bulan Maret –Mei 2019. Metode riset menggunakan metode survey yaitu dengan cara melakukan pengambilan sampel air dan sampel makrozoobentos di sepanjang Sungai Cilalawi. Teknik pengambilan data menggunakan purposive sampling dengan menetapkan 4 stasiun dan empat kali pengambilan sampling setiap dua minggu sekali. Berdasarkan lokasi pengamatan secara komposisi di stasiun 1 terdiri dari 3 kelas dan 12 spesies makrozoobentos. Komposisi di stasiun 2 terdiri dari 3 kelas dan 10 spesies. Komposisi di stasiun 3 terdiri dari 4 kelas dan 16 spesies dan komposisi di stasiun 4 terdiri dari 2 kelas dan 7 spesies. Perbedaan nilai spesies defisit pada masing – masing stasiun berbeda, hal ini dipengaruhi oleh parameter fisik dan kimiawi sesuai kondisi di sekitar lingkungan perairan tersebut. Indeks keanekaragaman di Sungai Cilalawi berkisar 1,59 – 2,94 dan Indeks Keseragaman berkisar 0,2 – 0,9. Pola distribusi makrozoobentos di perairan Sungai Cilalawi berdasarkan Indeks Morisita adalah seragam dan berkelompok di stasiun 1 hingga stasiun 4.Kata kunci: Distribusi, Makrozoobentos, Sungai Cilalawi, Jatiluhur, Bahan Pencemar
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