Edukasi Pengolahan Sampah Organik Rumah Tangga dan Pembuatan Lubang Biopori

Pencemaran sungai perlu diupayakan solusinya mengingat dampaknya terhadap kehidupan biota perairan dan sosial ekonomi masyarakat. Salah satu sumber pencemaran sungai berasal dari sampah organik rumah tangga yang banyak dibuang ke lingkungan perairan. Sampah tersebut dapat meningkatkan kandungan bahan organik di perairan. Tujuan kegiatan ini adalah menyajikan dan menganalisis pelaksanaan edukasi pengelolaan sampah organik rumah tangga menjadi pupuk cair dan kompos agar sampah tidak dibuang lagi ke sungai. Kegiatan dilaksanakan di Kampung Arban Bawah, Desa Gunung Bunder 2, Kecamatan Pamijahan, Kabupaten Bogor pada bulan Mei sampai Juni 2022. Metode pelaksanaan kegiatan dilakukan melalui observasi lapangan, memberikan materi pelatihan, praktik langsung, dan melakukan pemantauan. Analisis data dilakukan secara deskriptif. Edukasi dan aksi dilakukan melalui kegiatan pelatihan, pembuatan pupuk cair dan kompos dari sampah, pembuatan lubang biopori serta pemberian bantuan bak sampah dan pelubang biopori. Hasil pre-test menunjukkan bahwa masyarakat tidak mengetahui tentang mikroorganisme dalam sampah organik dan masyarakat belum mengetahui tentang pengelolaan sampah yang baik. Setelah dilakukan kegiatan pelatihan, diperoleh hasil bahwa masyarakat mengetahui tentang mikroorganisme dalam sampah organik, lubang biopori, dapat mengelola sampah, dan mau melakukan pengelolaan sampah menjadi pupuk cair dan kompos.Solutions for river pollution need to be worked out considering its impact on the life of aquatic biota and the socio-economic condition of the community. One source of river pollution comes from household organic waste which is disposed of a lot into the aquatic environment. The aim of this study is to present and analyze the educational implementation of household organic waste management into liquid fertilizer and compost so that garbage is not thrown into the river again. The activity was carried out in Arban Bawah, Gunung Bunder 2 Village, Pamijahan District, Bogor from May to June 2022. The method of carrying out activities is through field observations, providing training materials, practice, and monitoring activities. Data were analyzed descriptively. Education and action are carried out through training activities, making liquid fertilizer and compost from waste, making biopore holes and providing assistance with trash bins and biopore holes. The results of the pre-test showed that the community did not know about microorganisms in organic waste and the community did not know about good waste management. After the training, the community knows about microorganisms in organic waste, biopore hole, can manage waste, and is willing to do waste management become liquid fertilizer and compost

Horizontal Distribution of Zooplankton in Tangerang Coastal Waters, Indonesia

AbstractZooplankton plays an important role in aquatic ecosystems. It has both horizontal and vertical distribution. This research was conducted in Tangerang coastal waters with the purpose to determine horizontal distribution of zooplankton and its correlation to water quality. The results showed that there were 12 groups of zooplankton found in Tangerang coastal waters dominated by Crustacean. Based on Morisita Index, zooplankton in Tangerang coastal waters has been grouped as patchy pattern distribution. Horizontal distribution of zooplankton was divided into two clusters of site location and more influenced by pH and ammonia

Evaluasi kualitas air Danau Hias Crown Golf, Jakarta Utara berdasarkan kandungan N dan P: Evaluasi kualitas air Danau Hias Crown Golf, Jakarta Utara berdasarkan kandungan N dan P

Kegiatan antropogenik di sekitar perairan Danau hias Crown Golf berpotensi memberikan masukan limbah yang dapat menurunkan kualitas air yang berdampak pada terjadinya pengayaan nutrien. Penelitian ini bertujuan mengevaluasi kondisi kualitas air Danau Hias Crown Golf berdasarkan kandungan nutrien N dan P. Pengambilan contoh dilakukan selama satu tahun (September 2018-Agustus 2019) di empat titik pengamatan. Parameter utama yang diamati adalah N (nitrogen total, amonia, nitrit dan nitrat) dan P (fosfat total dan ortofosfat). Analisis data yang dilakukan adalah pembandingan kualitas air yang diperoleh dengan baku mutu kelas II pada PPRI No 82 Tahun 2001, penentuan rasio N/P, dan penentuan tingkat pencemaran menggunakan Water Quality Index (WQI) dan Indeks Pencemaran (IP) berdasarkan kandungan N dan P. Secara umum, kondisi perairan Danau hias Crown Golf masih sesuai dengan baku mutu untuk kegiatan rekreasi perairan. Konsentrasi nutrien (nitrit, nitrat, dan ortofosfat) lebih rendah pada musim hujan dibandingkan musim kemarau, sedangkan amonia, nitrogen total, dan fosfat total tidak berbeda antarmusim. Namun demikian, rasio N/P yang diperoleh sangat tinggi yaitu 51:1. Tingkat pencemaran Danau hias Crown Golf juga berada pada tingkat sedang hingga buruk berdasarkan WQI dan cemar ringan hingga cemar sedang berdasarkan IP. Hal ini menunjukkan bahwa perairan Danau hias Crown Golf telah memiliki konsentrasi N dan P yang cukup tinggi yang berpotensi menyebabkan terjadinya penurunan kualitas air dan fungsi ekologis.Anthropogenic activity surrounds the Crown Golf ornamental lake may contribute to waste input that could lead to the increasing of nutrient concentration and affect nutrient enrichment in the lake. This research aims to evaluate the water quality of Crown Golf ornamental lake, Pantai Indah Kapuk, North Jakarta based on N and P content. Water sampling was conducted for a year (September 2018 to August 2019) at four sampling locations. The main observed parameters were N (total nitrogen, ammonia, nitrite, nitrate) and P (total phosphate, orthophosphate).  The data were analyzed for comparison of observed water quality and standard (Government Decree of Indonesia Republic No 82 the Year 2001), determination of N/P ratio, and determination of pollution level determination using Water Quality Index (WQI) and Pollution Index (IP) based on N and P content. The nutrient concentrations (nitrite, nitrate, and orthophosphate) were lower in the rainy season than in the dry season, while ammonia, total nitrogen, and total phosphate were not different between both seasons. Generally, the water quality of Crown Golf ornamental lake was still meet the standard for recreational activity (Class II). However, the obtained N/P ratio was very high (51:1). The pollution level of this lake is also moderate to bad (based on WQI) and slightly polluted to highly polluted (based on PI). This revealed that the Crown Golf ornamental lake had quite high N and P concentration and potentially causing the decrease of water quality and ecological function

The potency of plankton as natural food for hard-lipped barb larvae (Osteochilus hasselti C.V.)

Plankton is aquatic organism that can be utilized as natural food. Hard-lipped barb is one of herbivorous fish that most of its life using plankton as its food source. Growing phytoplankton in pond can be conducted by providing nutrient source, such as fertilizing.  In this study, we examined the growth of hard-lipped barb larvae related to the existence of natural food in different fertilized ponds.  Four types of fertilizer were applied i.e. 100% organic fertilizer (PO), mixing of 85% organic and 15% inorganic fertilizer (PCa), mixing of 60% organic and 40% inorganic fertilizer, and 100% inorganic fertilizer (PA). Hard-lipped barb larvae were put into ponds after fertilizing process. Plankton was observed in ponds and larval intestines (Index of Preponderance and Ivlev Index). The growth of hard-lipped barb larvae was also observed. The result showed that larvae tend to utilize phytoplankton from the class of Bacillariophyceae and zooplankton in the early of its life. Utilizing plankton with those compositions as natural food in the early period generates a good growth performance.  The best performance of growth was shown by larvae in PA treatment which utilized most on zooplankton in the early period. Key words: fertilizer, natural food, hard-lipped barb, plankton   ABSTRAK Plankton merupakan organisme akuatik yang dapat digunakan sebagai sumber pakan alami. Ikan nilem merupakan salah satu jenis ikan herbivora yang hampir sepanjang hidupnya memanfaatkan plankton sebagai sumber makanannya. Cara untuk menumbuhkan fitoplankton di kolam adalah dengan menyediakan sumber nutrien, di antaranya melalui pemupukan. Oleh karena itu, penelitian ini dilakukan untuk mempelajari tingkat pertumbuhan larva ikan nilem berkaitan dengan keberadaan pakan alami yang ditumbuhkan pada media dengan jenis pupuk berbeda. Dalam penelitian ini diterapkan empat jenis pupuk berbeda, yaitu 100% pupuk organik (PO), campuran 85% pupuk organik dan 15% pupuk anorganik (PCa), campuran 60% pupuk organik dan 40% pupuk anorganik, dan 100% pupuk anorganik (PA).  Larva ikan nilem ditebar di kolam setelah proses pemupukan. Pengamatan dilakukan terhadap keberadaan plankton di kolam dan di usus (Indeks Preponderance dan Ivlev).  Di samping itu juga dilakukan pengamatan pertumbuhan larva.  Berdasarkan hasil penelitian diketahui bahwa fitoplankton dari kelas Bacillariophyceae dan zooplankton banyak dimanfaatkan oleh larva di awal hidupnya.  Pemanfaatan plankton dengan komposisi tersebut sebagai pakan alami di awal masa pemeliharaan menghasilkan pertumbuhan yang baik.  Larva dengan pertumbuhan yang paling baik ditunjukkan oleh perlakuan PA yang memanfaatkan zooplankton lebih besar di awal masa pemeliharaan. Kata kunci: ikan nilem, pakan alami, plankton, pupu

Estimation of phytoplankton carbon content in Jatigede Reservoir, Sumedang, West Java

Waduk Jatigede merupakan perairan daratan tergenang yang terbentuk dari pembendungan sungai Cimanuk.  Waduk Jatigede, sebagaimana waduk umunnya, secara horizontal terbagi atas tiga wilayah, yaitu riverin, transisi, dan lakustrin. Perbedaan karakteristik setiap zona juga berdampak pada komposisi dan komunitas fitoplankton, status trofik, dan kandungan karbon. Penelitian ini bertujuan untuk mengalkulasi seberapa besar kandungan karbon pada fitoplankton di perairan Waduk Jatigede pada setiap zona dengan komposisi dan komunitas fitoplankton pada status trofik tertentu. Stasiun penelitian dipilih menggunakan purposive sampling dengan pemilihan stasiun berdasarkan zona dalam waduk, yaitu riverin, transisi, dan lakustrin. Analisis status trofik dan kandungan karbon digunakan untuk mengetahui kondisi dan keberadaan karbon di Waduk Jatiged. Status trofik Waduk Jatigede berdasarkan Indeks Nygaard dan TSI (Tropic State Index) dikategorikan ke dalam tingkat kesuburan eutrofik. Jenis-jenis dari Kelas Cyanophyceae memiliki kelimpahan tertinggi, tetapi kandungan karbon tertinggi berada di kelas Dinophyceae. Zonasi riverin, transisi, dan lakustrin memiliki status kesuburan yang sama, tetapi memiliki komposisi dan komunitas fitoplankton yang berbeda. Berdasarkan hasil penelitian, diperoleh kandungan karbon fitoplankton relatif tinggi di zona  riverin dan lakustrin, dan rendah di zona transisi.  Jatigede Reservoir is stagnant inland water formed from the damming of the Cimanuk river. Jatigede Reservoir, like any other reservoir, is horizontally divided into three areas, namely riverine, transition, and lacustrine. The different characteristics of each zone also impact the composition and community of phytoplankton, trophic status, and carbon content. This study aims to calculate the carbon content of phytoplankton in the waters of the Jatigede Reservoir in each zone with the composition and community of phytoplankton at a certain trophic status. The research stations were selected using purposive sampling with station selection based on the site in the reservoir, namely riverine, transition, and lacustrine. Analysis of trophic status and carbon content was used to determine the condition and presence of carbon in the Jatiged Reservoir. The trophic position of the Jatigede Reservoir based on the Nygaard Index and TSI (Tropic State Index) is categorized into the eutrophic level. Species from the Cyanophyceae class tend to have high abundances, but the higher carbon content is in the Dinophyceae class. Riverin, transitional, and lacustrine zoning have the same trophic status but have different compositions and phytoplankton communities. Based on the study results, the carbon content of phytoplankton was relatively high in the riverine and lacustrine zones and low in the transition zone. &nbsp

Kajian Aspek Ekologis Dan Daya Dukung Perairan Situ Cilala

Ecological 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

The impact of nitrifying probiotic to population growth of pathogenic bacteria, Vibrio sp., and toxic nitrogen gasses in marine shrimp culture media under laboratory condition

Intensification of shrimp farming has led to problems of water quality and development of pathogenic bacteria. The excess feed and fecal deposited in the bottom of the pond undergo ammonification and result in excess of ammonia formation in pond water and sediment. The purposes of this research was to investigate the impact nitrifying bacteria application on the controlling of pathogenic Vibrio sp. bacteria and toxic nitrogen gasses.  Twelve (12) transparent glass bottles (effective volume of 3 L) were used in this research. Tested probiotic was purchased in free market and producer claims to contain Nitrosomonas sp., Nitrosococcus sp., Nitrobacter sp., Bacillus sp., Aerobacter sp., and Pseudomonas sp. The tested media was sea water containing Vibrio sp., TAN, NO2 and NO3 of 54.07 ± 2.93 mg/L; 6.33 ± 0.17 mg/L; 2.43 ± 0.04 mg/L; and 0.46 ± 0.01 mg/L respectively.  The treatment of probiotic was 0 mg/L as a control; 0.1 mg/L; 0.2 mg/L; and 0.4 mg/L with 3 replications. In regard to concentration of Vibrio sp., NH3 and NO2 gasses, treatment doses of 0.1 mg/L (A) resulted a save level within 4 days after treatment, but to more secure in the practical work for shrimp farm, the doses of 0.2 mg/L (B) is suggested

Dinamika Sel Heterokis Anabaena Azollae Dalam Media Tumbuh Dengan Konsentrasi Nitrogen Berbeda

Anabaena azollae is an heterocyst Cyanophyceaean as symbiont of Azolla sp. Anabaena azollae is able to fix N2 from atmosphere and transform it into ammonium by its heterocyst cell. This research was conducted to study the influence of different concentration level of nitrogen to the dynamic of Anabaena azollae heterocyst cell. Research was conducted by observing heterocyst cell and variation nitrogen concentration in growing media in 21 days. In each sampling of Azolla sp., heterocyst observation was conducted for every 1000 cells in Anabaena azollae filament colonies. Result showed that media with 0 mg/L nitrogen has the highest number of heterocyst cell. In early observation, there was increasing of ammonium concentration in media 0 mg/L and 5 mg/L. Media without nitrogen addition has generated the highest number of heterocyst cell