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Aliati Iswantari
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Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

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PENGELOLAAN KANDUNGAN BAHAN ORGANIK PADA LIMBAH CAIR LABORATORIUM PROLINGMSP-IPB DENGAN BERBAGAI KOMBINASI AGEN BIOREMEDIASI Pratiwi, Niken Tunjung Murti; Hariyadi, Sigid; Ayu, Inna Puspa; Apriadi, Tri; Iswantari, Aliati; Wulandari, Dwi Yuni
JURNAL BIOLOGI INDONESIA Vol 15, No 1 (2019): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v15i1.3768

Abstract

ABSTRACT Wastewater from laboratory glassware washing activities contains organic materials. Decomposing bacteria could increase the biomass by utilizing organic matter as a source of carbon. This research was aimed to describe the influence of commercial probiotic application in reducing organic matter content of Proling laboratory wastewater. The research was conducted from February to July 2016 in Aquatic Microbiology Laboratory. The experiment consists of several treatments, those were wastewater (L), wastewater+molase (LM), and wastewater+molase+bacteria from commercial probiotic (LMB). Major parameters observed were COD and bacteria abundance. The results showed that there was significant response difference between molasses and without molasses treatment. Based on COD, the most influenced treatment in decreasing organic matter were LM and LMB. These treatments could decrease COD up to 97% and 91%. Furthermore, the abundance of bacteria in molasses treatment was higher than without molasses. Based on this study, the most effective treatment in reducing organic matter was LMB.  Keywords: bacteria, laboratory wastewater, molasses, organic matter
Komposisi Fitoplanton dan Status Kesuburan Perairan Danau Lido, Bogor-Jawa Barat Melalui Beberapa Pendekatan Pratiwi, Niken TM; Hariyadi, Sigid; Ayu, Inna Puspa; Iswantari, Aliati
JURNAL BIOLOGI INDONESIA Vol 9, No 1 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i1.152

Abstract

Danau Lido merupakan perairan yang banyak dimanfaatkan untuk berbagai aktivitas manusia yang akan memberimasukan bahan organik dan anorganik ke perairan. Masukan tersebut dapat meningkatkan kandungan nutrienperairan. Hal ini dapat menyebabkan berubahnya status kesuburan perairan. Penelitian ini bertujuan untukmengetahui komposisi fitoplankton dan menduga status kesuburan perairan Danau Lido melalui beberapa pendekatan.Komposisi fitoplankton di stasiun KJA dan non-KJA relatif sama. Proporsi dan kelimpahan tertinggiberasal dari kelompok Bacillariophyceae, terutama dari genus Melosira sp. Status kesuburan berdasarkan parameteryang diolah dengan menggunakan pendekatan TSI, TRIX, dan Indeks Nygaard menunjukkan bahwa perairan DanauLido memiliki status kesuburan eutrofik. Indeks Nygaard masih relevan dan dapat diterapkan dalam penentuanstatus kesuburan perairan.Kata kunci: Danau Lido, Indeks Nygaard, status trofik, TRIX, TSI
Dinamika Sel Heterokis Anabaena azollae dalam Media Tumbuh dengan Konsentrasi Nitrogen Berbeda Murti Pratiwi, Niken Tunjung; Ayu, Inna Puspa; Hariyadi, Sigid; Nursiyamah, Siti; Sulaiman, Goran Suryanti Afifah; Iswantari, Aliati
JURNAL BIOLOGI INDONESIA Vol 12, No 2 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (750.84 KB) | DOI: 10.14203/jbi.v12i2.2897

Abstract

ABSTRACTAnabaena 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.Keywords: Anabaena azollae, Azolla sp., heterocyst
Fluks Bentik dan Potensi Aktivitas Bakteri Terkait Siklus Nitrogen di Sedimen Perairan Mangrove Pulau Dua, Banten Iswantari, Aliati; Wardiatno, Yusli; Pratiwi, Niken T.M; Rusmana, Iman
JURNAL BIOLOGI INDONESIA Vol 10, No 1 (2014): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.728 KB) | DOI: 10.14203/jbi.v10i1.336

Abstract

Mangrove ecosystem has important role as source of nutrient particularly nitrogen in coastal area. Nitrogen (N) is alimiting factor in marine and coastal area. The aim of this research was to study benthic fluxes and potency ofbacterial activity in sediment of mangroves area, related to nitrogen cycle. This research was conducted in floodedmangroves area in Pulau Dua. The sediment and overlying water was sampled using sediment core sampler.Experimental treatment for flux analysis and sediment-slurry were conducted in three hours. Nutrient of NH3-N,NO2-N, and NO3-N and abundance of nitrifier, denitrifier, DNRA, and ammonifier were analyzed. The resultsshowed that the abundance of anaerobic bacteria was higher than aerobic bacteria. The dominance of bacterialgroups found in sediment was ammonification bacteria. The highest nutrient concentration in sediment was NH3-N. Benthic fluxes value showed higher NH3-N tends to release from the sediment to water than NO2-N and NO3-N. Generally, mangrove sediment in Pulau Dua has higher potency ofbacterial activity (Vmax and Km) in NO3reduction by anaerobic bacteria than NH3 oxidation by aerobic bacteria.Keywords: bacteria, benthic fluxes, mangrove, potency of bacterial activity, sediment
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 
Konsumsi Oksigen Ikan Uceng Nemacheilus fasciatus (Valenciennes, 1846) pada Kondisi Padat Tebar yang Berbeda Iswantari, Aliati; Kurniawan, Kurniawan; Priadi, Bambang; Prakoso, Vitas Atmadi; Kristanto, Anang Hari
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 2 (2019)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (622.488 KB) | DOI: 10.14203/oldi.2019.v4i2.245

Abstract

Oxygen Consumption of Barred Loach Nemacheilus fasciatus (Valenciennes, 1846) under Different Stocking Densities. In aquaculture system, fish growth is affected by stocking densities. One way to predict the effect of stocking density on growth is to determine fish metabolic rate through oxygen consumption measurements. In Barred loach Nemacheilus fasciatus (Valenciennes, 1846), the information was scarce on oxygen consumption. This study was to analyze the effect of stocking density on oxygen consumption in Barred loach conducted at Research Institute for Freshwater Aquaculture and Fisheries Extension, Bogor in May 2018. Barred loach (total length: 5.79 ± 0.47 cm, weight: 1.32 ± 0.34 g) was observed its oxygen consumption on three different stocking densities (5, 10, and 15 fish/L) by using closed respirometers (volume: 1.4 L) with three replications of each treatment. Measurement of oxygen consumption was carried out under normoxia and hypoxia conditions. In addition, fish behavior and ventilation rate were also observed and recorded according to treatment. The results showed that the highest oxygen consumption of barred loach was found in the stocking density of 5 fish/L (1250.6 ± 128.4 mg O2/kg/h) which was significantly different from the stocking density of 10 fish/L (626.9 ± 46.7 mg O2/kg/h) and 15 fish/L (596.9 ± 48.9 mg O2/kg/h). Meanwhile, oxygen consumption of barred loach under hypoxic conditions decreased significantly compared to normoxic conditions, which was marked by a decrease in their swimming activities. Although the ventilation rate in hypoxic conditions has decreased, the value was not significantly different from those of normoxia condition. Results of this study provide information that an increase in stocking density and hypoxic conditions in barred loach caused a decrease in oxygen consumption rates. In addition, this study showed that the critical oxygen level for barred loach was around 3.1 mg/L
DINAMIKA SEL HETEROKIS ANABAENA AZOLLAE DALAM MEDIA TUMBUH DENGAN KONSENTRASI NITROGEN BERBEDA Murti Pratiwi, Niken Tunjung; Ayu, Inna Puspa; Hariyadi, Sigid; Nursiyamah, Siti; Sulaiman, Goran Suryanti Afifah; Iswantari, Aliati
JURNAL BIOLOGI INDONESIA Vol 12, No 2 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i2.2897

Abstract

ABSTRACTAnabaena 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.Keywords: Anabaena azollae, Azolla sp., heterocyst
KOMPOSISI FITOPLANTON DAN STATUS KESUBURAN PERAIRAN DANAU LIDO, BOGOR-JAWA BARAT MELALUI BEBERAPA PENDEKATAN Pratiwi, Niken TM; Hariyadi, Sigid; Ayu, Inna Puspa; Iswantari, Aliati
JURNAL BIOLOGI INDONESIA Vol 9, No 1 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i1.152

Abstract

Danau Lido merupakan perairan yang banyak dimanfaatkan untuk berbagai aktivitas manusia yang akan memberimasukan bahan organik dan anorganik ke perairan. Masukan tersebut dapat meningkatkan kandungan nutrienperairan. Hal ini dapat menyebabkan berubahnya status kesuburan perairan. Penelitian ini bertujuan untukmengetahui komposisi fitoplankton dan menduga status kesuburan perairan Danau Lido melalui beberapa pendekatan.Komposisi fitoplankton di stasiun KJA dan non-KJA relatif sama. Proporsi dan kelimpahan tertinggiberasal dari kelompok Bacillariophyceae, terutama dari genus Melosira sp. Status kesuburan berdasarkan parameteryang diolah dengan menggunakan pendekatan TSI, TRIX, dan Indeks Nygaard menunjukkan bahwa perairan DanauLido memiliki status kesuburan eutrofik. Indeks Nygaard masih relevan dan dapat diterapkan dalam penentuanstatus kesuburan perairan.Kata kunci: Danau Lido, Indeks Nygaard, status trofik, TRIX, TSI
PENGELOLAAN KANDUNGAN BAHAN ORGANIK PADA LIMBAH CAIR LABORATORIUM PROLINGMSP-IPB DENGAN BERBAGAI KOMBINASI AGEN BIOREMEDIASI Pratiwi, Niken Tunjung Murti; Hariyadi, Sigid; Ayu, Inna Puspa; Apriadi, Tri; Iswantari, Aliati; Wulandari, Dwi Yuni
JURNAL BIOLOGI INDONESIA Vol 15, No 1 (2019): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v15i1.3768

Abstract

ABSTRACT Wastewater from laboratory glassware washing activities contains organic materials. Decomposing bacteria could increase the biomass by utilizing organic matter as a source of carbon. This research was aimed to describe the influence of commercial probiotic application in reducing organic matter content of Proling laboratory wastewater. The research was conducted from February to July 2016 in Aquatic Microbiology Laboratory. The experiment consists of several treatments, those were wastewater (L), wastewater+molase (LM), and wastewater+molase+bacteria from commercial probiotic (LMB). Major parameters observed were COD and bacteria abundance. The results showed that there was significant response difference between molasses and without molasses treatment. Based on COD, the most influenced treatment in decreasing organic matter were LM and LMB. These treatments could decrease COD up to 97% and 91%. Furthermore, the abundance of bacteria in molasses treatment was higher than without molasses. Based on this study, the most effective treatment in reducing organic matter was LMB.  Keywords: bacteria, laboratory wastewater, molasses, organic matter
FLUKS BENTIK DAN POTENSI AKTIVITAS BAKTERI TERKAIT SIKLUS NITROGEN DI SEDIMEN PERAIRAN MANGROVE PULAU DUA, BANTEN Iswantari, Aliati; Wardiatno, Yusli; Pratiwi, Niken T.M; Rusmana, Iman
JURNAL BIOLOGI INDONESIA Vol 10, No 1 (2014): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v10i1.336

Abstract

Mangrove ecosystem has important role as source of nutrient particularly nitrogen in coastal area. Nitrogen (N) is alimiting factor in marine and coastal area. The aim of this research was to study benthic fluxes and potency ofbacterial activity in sediment of mangroves area, related to nitrogen cycle. This research was conducted in floodedmangroves area in Pulau Dua. The sediment and overlying water was sampled using sediment core sampler.Experimental treatment for flux analysis and sediment-slurry were conducted in three hours. Nutrient of NH3-N,NO2-N, and NO3-N and abundance of nitrifier, denitrifier, DNRA, and ammonifier were analyzed. The resultsshowed that the abundance of anaerobic bacteria was higher than aerobic bacteria. The dominance of bacterialgroups found in sediment was ammonification bacteria. The highest nutrient concentration in sediment was NH3-N. Benthic fluxes value showed higher NH3-N tends to release from the sediment to water than NO2-N and NO3-N. Generally, mangrove sediment in Pulau Dua has higher potency ofbacterial activity (Vmax and Km) in NO3reduction by anaerobic bacteria than NH3 oxidation by aerobic bacteria.Keywords: bacteria, benthic fluxes, mangrove, potency of bacterial activity, sediment
Co-Authors Bambang Priadi Dwi Yuni Wulandari Iman Rusmana Inna Puspa Ayu, Inna Puspa Kristanto, Anang Hari Kurniawan Kurniawan Murti Pratiwi, Niken Tunjung Murti Pratiwi, Niken Tunjung Niken T.M Pratiwi, Niken T.M Niken T.M. Pratiwi Niken TM Pratiwi Niken Tunjung Murti Pratiwi Novita MZ, Novita Nursiyamah, Siti Nursiyamah, Siti Prakoso, Vitas Atmadi SIGID HARIYADI Sulaiman, Goran Suryanti Afifah Sulaiman, Goran Suryanti Afifah Tri Apriadi Yusli Wardiatno