This study was chiefly aimed at pursuing new biologically active secondary metabolites of microfu... more This study was chiefly aimed at pursuing new biologically active secondary metabolites of microfungus species, Lecanicillium evansii, isolated from sponge Callyspongia sp collected from West Bali Sea, Indonesia. Sponges were collected by scuba diving. A tiny piece of sponge was inoculated on the surface of malt agar plates and incubated at 27 °C. In order to get a pure mono-culture of the fungus, repeated sub-culturing onto fresh malt agar plates were performed. The collected fungi were maintained on malt agar plates using the Wickerham medium. Mass cultivation of the fungus L. evansii (10 L) was carried out in 30 erlenmeyer flasks in Wickerham medium. After 10 days incubation, without shaking under constant room temperature (20 °C), fungal mycelium were separated from the culture broth. The mycelia were extracted with methanol and ethyl acetate was added to the media. Both methanol-added mycelia and ethyl acetate-added media were left overnight. Seven compounds were isolated from L. evansii. Those compounds comprised phenolic compounds (terphenylin, deoxyterphenylin, terprenin 2, terprenin epoxide), bipeptide (cyclo-tyrosylprolyl), and simple aromatic compounds (acetyl hydroxybenzamide, 4-hydroxybenzaldehyde). Detailed analysis by NMR and mass spectrometry enabled their identification to be new deoxyterphenylin, new terprenin 2, and new terprenin epoxide.
This study is aimed to determine the differences of the soft corals between sheltered and exposed... more This study is aimed to determine the differences of the soft corals between sheltered and exposed area in Pongok Island, Soulth of Bangka and Tegal Island in Lampung Bay, Indonesia. The physical-chemical parameters of waters were measured in the field and laboratorium. Soft coral types and covers were measured using line intercept transect (LIT) and quadrant transects methods. Eigtht types of soft corals classified in four genera (Lobophytum, Nephthea, Sarcophyton and Sinularia) were found in both sites, six species were identified in the waters of South Bangka (at 9 meters depth) and two species (at 3 meters depth). In Tegal Island waters (closed waters), only 3 species from the genus Sinularia were recorded (at 2-5m depth). There were 2 stations at Pongok Island namely, PGK1 and PGK2, while in Tegal Island, there were 4 stations namely MCN1, TGL2, GSN3 dan LHK4. Coral diversity was considered as medium category, similarity indexes were low to moderate, except at PGK2 station was considered high, and for the level of dominance, there were no type of coral that dominates. Principal component analyses showed that both waters can be classified based on their physical-chemical characteristic, which were turbidity, temperature, depth, currents, phosphate, nitrate and substrate type.
Tofu production is a domestic industry, that most of it has no appropriate wastewater treatment f... more Tofu production is a domestic industry, that most of it has no appropriate wastewater treatment facilities. Wastewater of tofu contains high organic matter which can decrease the water quality. This study aimed to analyze capability of Vetiveria zizanioides, L and zeliac in treating tofu wastewater industry. Zeliac is a new adsorbent, which consists of zeolite, activated carbon, limestone, rice husk ash and cement. Response surface methodology was applied to analyze the data, using central composite design with two factors, i.e., time (3, 9, and 15 days) and waste concentration (20, 40, and 60%). The optimum treatment occurred at the time of 15 days and 38.41% of tofu wastewater concentration decreasing up to 76% of COD, 71.78% of BOD, and 75.28% of TSS.
Ammonia concentration of catfish culture wastewater underwent reduction up to 90.73% under vetive... more Ammonia concentration of catfish culture wastewater underwent reduction up to 90.73% under vetiver treatment. Length and weight range of catfish under vetiver treatment was higher than that of without vetiver. Similarly, survival rate of catfish at vetiver treatment was higher compared with that at the control. Vetiver was able to remove ammonia and grow under recirculating system of catfish culture by utilizing nutrient resulted from organic substance decomposition of uneaten fish food, feces, and urine. Nitrate and total phosphate concentration remained high at the end of experiment (third week) denoting that decomposition process has still been taking place.
East Kalibaru River is one of the thirteen rivers flowing through Jakarta. East Kalibaru River ha... more East Kalibaru River is one of the thirteen rivers flowing through Jakarta. East Kalibaru River has an important role in development of the region. Considering the increasing activities of people, settlements and number of industries along the East Kalibaru River, it is necessary to calculate contaminants load that discharged into the water body East Kalibaru. This study conducted to determine the point source and domestic waste pollution loads, using parameters of BOD, COD and TSS. The analysis showed that the total pollution loads such are calculated as 43.714 kg/day for BOD, 60.107 kg/day for COD and total 41.529 kg/day for TSS. Total pollution load discharged into river from point source effluent is amounted of 249 kg/day for BOD, 1.505 kg/day for COD and total 411 kg/day for TSS. Effect of domestic waste is very insignificant compared to the effect of point source that went into the river. The result suggest that approach that need to be done to reduce the burden of domestic waste water pollutants is by performing additional production or communal Wastewater Treatment Plant (WWTP) in densely populated areas.
Source of river water pollution was determined by inventarization and application of GIS. Based o... more Source of river water pollution was determined by inventarization and application of GIS. Based on the calculation of the Storet Index and the Pollution Index for class 4, the water quality of Cipinang River in Jakarta segment tended to improve toward moderately or lightly polluted contamination. However, there were still heavy polluted catagories (2012-2014) (SLHD and PKA Data). Cipinang River water quality in Jakarta segment tended to improve from lightly polluted to good condition (2012-2014) (BBWS-CC data). Water quality status of Cipinang River Depok segment was moderately polluted or lightly polluted (2012-2014) (SLHD and PKA Data). Meanwhile, the water quality status of Cipinang River Depok segment tended to be good (2012-2014) (BBWS-CC data). Total potential pollutant load in Cipinang River was 375,037.01 kg/day BOD, 669.399.64 kg/day COD, and 349,883.27 kg/day TSS. Generally it could be concluded that the water quality of Cipinang River is currently class 4.
Ciliwung River is one of the sources of raw water and drinking water for Jakarta. Ciliwung waters... more Ciliwung River is one of the sources of raw water and drinking water for Jakarta. Ciliwung watershed has an area of approximately 347 km 2 ; and the length of the main river is 117 km. Ciliwung river flows through three major cities, Bogor at upstream, Depok at middle stream, and Jakarta at downstream. The water quality parameters for this study were TSS (Total Suspended Solid), Total Phosphate, BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand), DO (Dissolved Oxygen). These parameters were calculated with Pollution Index Method and Storet Method and classified based on the GR No. 82/2001, Indonesia. This the research aimed to study the water quality status of Ciliwung Watershed. The Storet method showed that water quality status referred to class 2, the Ciliwung river status was highly polluted, while with Pollution Index Method, the river water quality status was moderately polluted.Based on the findings, it could be concluded that DO, BOD, COD, Total Phosphate and Total Coliform negatively impacted the water quality status of Ciliwung River.
–The aim of this research was to examine the ability of butterhead lettuce (Lactuca sativa L. var... more –The aim of this research was to examine the ability of butterhead lettuce (Lactuca sativa L. var. Capitata) to absorb the nitrogen and phosphorus derived from the waste of tilapia (Oreochromis niloticus) cultivation in a aquaponic system. Tilapia was cultivated along with three treatments of plant namely T1 (without plants), T2 (10 plants) and T3 (20 plants). The experiment lasted for 6 weeks. TAN, Ammonia (NH 3 and NH 4), NO 2 , NO 3, and PO 4 were lower in the treatment of T3 than those at T1 and T2. N and P uptake in T3 was higher than that of in T2. In the term of lettuce growth performance, RGR (Relative Growth Rate) and SR (Survival Rate) were similar. FCR (Food Conversion Ratio) of fish in T2 was higher than that of in T3, while T3 had better SGR and SR.
As much as 7 locations of water quality monitoring during 2012-2014 in Pesanggrahan River were co... more As much as 7 locations of water quality monitoring during 2012-2014 in Pesanggrahan River were collected. The purpose of this study was to integrate water quality class and spatial analysis of land use and land cover in Pesanggrahan River. Water quality characteristic were determined by using Storet index and Pollution index. The study results revealed that the current water quality characteristic is class 4. River water quality class recommendation is class 3, and target river water quality class is class 2. It means that current river water characteristic can be used for irrigation, agriculture or other uses that require the same water quality with these purposes. The spatial analysis of each river segment by interpretation of satellite images pointed out that there was still dry land farming area in West Jakarta, South Jakarta, and Depok.
Increasing fish cultivation activity triggers negative impact on the environment. An effort likel... more Increasing fish cultivation activity triggers negative impact on the environment. An effort likely applied to cope with this problem is phytoremediation with aquaponics system. Aims of this study were to process organic waste from the cultivation of gouramy, and then the processed waste is utilized as a medium for growing romaine lettuce in recirculation systems and to compare the effectiveness of hydroponics-aquaponics recirculation system on romaine lettuce growth. Organic waste such as feed residuals and feces from the cultivation of gouramy could be processed with phytoremediation by romaine lettuce. The organic material after the process of decomposition could be utilized for romaine lettuce growth. Final weight of romaine lettuce was 90.16 ± 13.3 g for P4 (hydroponics), 89.4 ± 7.4 g for P2 (aquaponics with 10 romaine lettuce), and 85 ± 11.5 g for P3 (aquaponics with 20 romain lettuce). The highest daily growth (DGR) and relative growth (RGR) were P4 (hydroponics) of 0.056 ± 0.001 cm/day and 0.007 ± 0.002 g/day, respectively. Organic waste from the cultivation of gouramy can be processed with phytoremediation by romaine lettuce. Organic materials such as feed residuals and feces after the process of decomposition can be utilized for romaine lettuce growth. Meanwhile the highest daily growth (GR), specific growth (SGR) and survival rate (SR) of gouramy were P2 (aquaponics with 10 romaine lettuce) at 7.43 ± 1.77g/fish/day, 1.26 ± 0.12%/day, 100%, respectively. However, the best feed conversion ratio (FCR) was P3 (aquaponics with 20 romaine lettuce) of 0.59 ± 0.28.
Floating wetlands on a container (25 L) using Vetiveria zizanioides (L) Nash was applied to remed... more Floating wetlands on a container (25 L) using Vetiveria zizanioides (L) Nash was applied to remediate crude oil spill in water for four weeks. Three plants (height 10 cm) were inserted in a pot containing rockwool, floated on crude oil spiked water. Treatment included 3 and 6 pot plants with 1% crude oil concentration. Six pot plants during 4 weeks of experiment could reduce the oil content of 91.39%, 84.60% COD, and 84.25% BOD. Meanwhile, 3 pot plants could decrease the oil content of 90.28%, 81.69% COD, and 81.10% BOD. DO at week 4 decreased. The BOD and COD did not show any significant reduction. Plants grew better in crude oil contaminated water. Those were indicated by 47.22% parent and 100% shoots could live until the study end in 1% crude oil spiked water. Meanwhile, in crude oil uncontaminated water, 30.56% parent and 40% shoots were able to live until the study end. Wet plant biomass (5.1070 g) in the crude oil contaminated water was greater than the plant biomass (4.8362 g) in crude oil uncontaminated water. RGR of V. zizanioides in crude oil contaminated water was 5.10 g/week and 4.83 g/week in uncontaminated water.
Ciliwung is the biggest river in Jakarta. It is 119 km long with a catchment area of 476 km2. It ... more Ciliwung is the biggest river in Jakarta. It is 119 km long with a catchment area of 476 km2. It flows from Bogor Regency and crosses Bogor City, Depok City, and Jakarta before finally flowing into Java Sea through Jakarta Bay. The water quality in Ciliwung River has degraded. Many factors affect water quality. Understanding the relationship between land use and surface water quality is necessary for effective water management. It has been widely accepted that there is a close relationship between the land use type and water quality. This study aims to analyze the influence of various land use types on the water quality within the Ciliwung Watershed based on the water quality monitoring data and remote sensing data in 2010 and 2014. Water quality parameters exhibited significant variations between the urban-dominated and forest-dominated sites. The proportion of urban land was strongly positively associated with total nitrogen and ammonia nitrogen concentrations. The result can provide scientific reference for the local land use optimization and water pollution control and guidance for the formulation of policies to coordinate the exploitation and protection of the water resource.
The rapid growth of water hyacinth in Cirata Reservoir becomes an issue that must be addressed, b... more The rapid growth of water hyacinth in Cirata Reservoir becomes an issue that must be addressed, because of disrupting the function of the reservoir as a power plant. Research on reduction of water hyacinth population using grass carp was performed on floating net in Cirata Reservoir, West Java, Indonesia. The number of fish stocked was 30 fishes per nets, fish average weight of 100 g/fish, 150 g/fish and 200 g/fish as treatment. Each treatment was triplicates. Hyacinth (root length of 10-15 cm and 10-15 cm height) was placed in the transect (1 x 1 m) made from PVC pipe. As much as 8000 g hyacinth was introduced in each transect. This introduction was repeated every week. Experiment lasted 4 weeks. The highest percentage of hyacinth biomass reduction (86.8 – 88.4 %) occurred on treatment of 30 fishes (size 200 g/fish). However, 100 g/fish was recommended for controlling the blooming of water hyacinth. The choice of 100 g/fish is based on the highest feeding rate (31.5-35.2%). However, since there is no regulation yet for the introduction of grass carp to the open water in Indonesia, the usage of this fish for biocontrol of aquatic weed has not yet been legally allowed.
The study aimed to investigate the bioactivity of artificially fragmented Sinularia sp. and Lobop... more The study aimed to investigate the bioactivity of artificially fragmented Sinularia sp. and Lobophytum sp. transplanted at 3 m and 10 m seawater depth. Artificial fragmentation and transplantation was performed at Pramuka Island, Kepulauan Seribu. Lobophytum sp. raw extract showed higher bioactivity toward S. aureus and E. coli than that of Sinularia sp. Bioactivity of Lobophytum sp. and Sinularia sp. at depth of 10 m indicated higher than that of 3 m depth. Bioactivity of Lobophytum towards Artemia salina was classified as very toxic, meanwhile bioactivity of Sinularia sp was toxic.
The surface sediments were identified from west part of Java Sea to evaluate spatial distribution... more The surface sediments were identified from west part of Java Sea to evaluate spatial distribution and ecological risk potential of heavy metals (Hg, As, Cd, Cr, Cu, Pb, Zn and Ni). The samples were taken from surface sediment (<0.5 m) in 26 m up to 80 m water depth with Eikman grab. The average material composition on sediment samples were clay (9.86%), sand (8.57%) and mud sand (81.57%). The analysis showed that Pb (11.2%), Cd (49.7%), and Ni (59.5%) exceeded of Probably Effect Level (PEL). Base on ecological risk analysis, Cd ( :300.64) and Cr ( :0.02) were categorized to high risk and low risk criteria. The ecological risk potential sequences of this study were Cd>Hg>Pb>Ni>Cu>As>Zn>Cr. Furthermore, the result of multivariate statistical analysis shows that correlation among heavy metals (As/Ni, Cd/Ni, and Cu/Zn) and heavy metals with Risk Index (Cd/Ri and Ni/Ri) had positive correlation in significance level p<0.05. Total variance of analysis factor was 80.04% and developed into 3 factors (eigenvalues >1). On the cluster analysis, Cd, Ni, Pb were identified as fairly high contaminations level (cluster 1), Hg as moderate contamination level (cluster 2) and Cu, Zn, Cr with lower contamination level (cluster 3).
Ciliwung is the biggest river in Jakarta. It is 119 km long with a catchment area of 476 km2. It ... more Ciliwung is the biggest river in Jakarta. It is 119 km long with a catchment area of 476 km2. It flows from Bogor Regency and crosses Bogor City, Depok City, and Jakarta before finally flowing into Java Sea through Jakarta Bay. The water quality in Ciliwung River has degraded. Many factors affect water quality. Understanding the relationship between land use and surface water quality is necessary for effective water management. It has been widely accepted that there is a close relationship between the land use type and water quality. This study aims to analyze the influence of various land use types on the water quality within the Ciliwung Watershed based on the water quality monitoring data and remote sensing data in 2010 and 2014. Water quality parameters exhibited significant variations between the urban-dominated and forest-dominated sites. The proportion of urban land was strongly positively associated with total nitrogen and ammonia nitrogen concentrations. The result can provide scientific reference for the local land use optimization and water pollution control and guidance for the formulation of policies to coordinate the exploitation and protection of the water resource
The main problem of coastal waters in Indonesia is generally caused by anthropogenic activities t... more The main problem of coastal waters in Indonesia is generally caused by anthropogenic activities that promoting the accumulation of organic matters in sediments. It was well-known that organic matters in sediment might influence the macrozoobenthic communities. AMBI and M-AMBI are two recent developed indices which could be used to evaluate the health of soft bottom macrozoobenthic community and their ecological quality status. This present study was aimed to compare and evaluate the ecological status of macrozoobenthic communities in Tangerang coast (northern part of Java) and Palabuhanratu Bay (southern part of Java) based on AMBI and M-AMBI indices. This study was conducted in April-May 2013 in Tangerang coastal area, and in May 2016 in Palabuhanratu Bay. There are 18 sampling sites in the Tangerang coast, and 30 sampling sites in Palabuhanratu Bay. The results showed that the disturbance level of macrozoobenthos community in Palabuhanratu Bay based on AMBI analysis ranged from undisturbed to slightly disturbed, while in Tangerang coastal waters ranged from undisturbed to moderate disturbed. Ecological quality status based on the M-AMBI ranged from poor to high for both locations. The AMBI and M-AMBI indices showed that benthic environment in Palabuhanratu Bay was ecologically better than that inTangerang coastal waters.
This study was chiefly aimed at pursuing new biologically active secondary metabolites of microfu... more This study was chiefly aimed at pursuing new biologically active secondary metabolites of microfungus species, Lecanicillium evansii, isolated from sponge Callyspongia sp collected from West Bali Sea, Indonesia. Sponges were collected by scuba diving. A tiny piece of sponge was inoculated on the surface of malt agar plates and incubated at 27 °C. In order to get a pure mono-culture of the fungus, repeated sub-culturing onto fresh malt agar plates were performed. The collected fungi were maintained on malt agar plates using the Wickerham medium. Mass cultivation of the fungus L. evansii (10 L) was carried out in 30 erlenmeyer flasks in Wickerham medium. After 10 days incubation, without shaking under constant room temperature (20 °C), fungal mycelium were separated from the culture broth. The mycelia were extracted with methanol and ethyl acetate was added to the media. Both methanol-added mycelia and ethyl acetate-added media were left overnight. Seven compounds were isolated from L. evansii. Those compounds comprised phenolic compounds (terphenylin, deoxyterphenylin, terprenin 2, terprenin epoxide), bipeptide (cyclo-tyrosylprolyl), and simple aromatic compounds (acetyl hydroxybenzamide, 4-hydroxybenzaldehyde). Detailed analysis by NMR and mass spectrometry enabled their identification to be new deoxyterphenylin, new terprenin 2, and new terprenin epoxide.
This study is aimed to determine the differences of the soft corals between sheltered and exposed... more This study is aimed to determine the differences of the soft corals between sheltered and exposed area in Pongok Island, Soulth of Bangka and Tegal Island in Lampung Bay, Indonesia. The physical-chemical parameters of waters were measured in the field and laboratorium. Soft coral types and covers were measured using line intercept transect (LIT) and quadrant transects methods. Eigtht types of soft corals classified in four genera (Lobophytum, Nephthea, Sarcophyton and Sinularia) were found in both sites, six species were identified in the waters of South Bangka (at 9 meters depth) and two species (at 3 meters depth). In Tegal Island waters (closed waters), only 3 species from the genus Sinularia were recorded (at 2-5m depth). There were 2 stations at Pongok Island namely, PGK1 and PGK2, while in Tegal Island, there were 4 stations namely MCN1, TGL2, GSN3 dan LHK4. Coral diversity was considered as medium category, similarity indexes were low to moderate, except at PGK2 station was considered high, and for the level of dominance, there were no type of coral that dominates. Principal component analyses showed that both waters can be classified based on their physical-chemical characteristic, which were turbidity, temperature, depth, currents, phosphate, nitrate and substrate type.
Tofu production is a domestic industry, that most of it has no appropriate wastewater treatment f... more Tofu production is a domestic industry, that most of it has no appropriate wastewater treatment facilities. Wastewater of tofu contains high organic matter which can decrease the water quality. This study aimed to analyze capability of Vetiveria zizanioides, L and zeliac in treating tofu wastewater industry. Zeliac is a new adsorbent, which consists of zeolite, activated carbon, limestone, rice husk ash and cement. Response surface methodology was applied to analyze the data, using central composite design with two factors, i.e., time (3, 9, and 15 days) and waste concentration (20, 40, and 60%). The optimum treatment occurred at the time of 15 days and 38.41% of tofu wastewater concentration decreasing up to 76% of COD, 71.78% of BOD, and 75.28% of TSS.
Ammonia concentration of catfish culture wastewater underwent reduction up to 90.73% under vetive... more Ammonia concentration of catfish culture wastewater underwent reduction up to 90.73% under vetiver treatment. Length and weight range of catfish under vetiver treatment was higher than that of without vetiver. Similarly, survival rate of catfish at vetiver treatment was higher compared with that at the control. Vetiver was able to remove ammonia and grow under recirculating system of catfish culture by utilizing nutrient resulted from organic substance decomposition of uneaten fish food, feces, and urine. Nitrate and total phosphate concentration remained high at the end of experiment (third week) denoting that decomposition process has still been taking place.
East Kalibaru River is one of the thirteen rivers flowing through Jakarta. East Kalibaru River ha... more East Kalibaru River is one of the thirteen rivers flowing through Jakarta. East Kalibaru River has an important role in development of the region. Considering the increasing activities of people, settlements and number of industries along the East Kalibaru River, it is necessary to calculate contaminants load that discharged into the water body East Kalibaru. This study conducted to determine the point source and domestic waste pollution loads, using parameters of BOD, COD and TSS. The analysis showed that the total pollution loads such are calculated as 43.714 kg/day for BOD, 60.107 kg/day for COD and total 41.529 kg/day for TSS. Total pollution load discharged into river from point source effluent is amounted of 249 kg/day for BOD, 1.505 kg/day for COD and total 411 kg/day for TSS. Effect of domestic waste is very insignificant compared to the effect of point source that went into the river. The result suggest that approach that need to be done to reduce the burden of domestic waste water pollutants is by performing additional production or communal Wastewater Treatment Plant (WWTP) in densely populated areas.
Source of river water pollution was determined by inventarization and application of GIS. Based o... more Source of river water pollution was determined by inventarization and application of GIS. Based on the calculation of the Storet Index and the Pollution Index for class 4, the water quality of Cipinang River in Jakarta segment tended to improve toward moderately or lightly polluted contamination. However, there were still heavy polluted catagories (2012-2014) (SLHD and PKA Data). Cipinang River water quality in Jakarta segment tended to improve from lightly polluted to good condition (2012-2014) (BBWS-CC data). Water quality status of Cipinang River Depok segment was moderately polluted or lightly polluted (2012-2014) (SLHD and PKA Data). Meanwhile, the water quality status of Cipinang River Depok segment tended to be good (2012-2014) (BBWS-CC data). Total potential pollutant load in Cipinang River was 375,037.01 kg/day BOD, 669.399.64 kg/day COD, and 349,883.27 kg/day TSS. Generally it could be concluded that the water quality of Cipinang River is currently class 4.
Ciliwung River is one of the sources of raw water and drinking water for Jakarta. Ciliwung waters... more Ciliwung River is one of the sources of raw water and drinking water for Jakarta. Ciliwung watershed has an area of approximately 347 km 2 ; and the length of the main river is 117 km. Ciliwung river flows through three major cities, Bogor at upstream, Depok at middle stream, and Jakarta at downstream. The water quality parameters for this study were TSS (Total Suspended Solid), Total Phosphate, BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand), DO (Dissolved Oxygen). These parameters were calculated with Pollution Index Method and Storet Method and classified based on the GR No. 82/2001, Indonesia. This the research aimed to study the water quality status of Ciliwung Watershed. The Storet method showed that water quality status referred to class 2, the Ciliwung river status was highly polluted, while with Pollution Index Method, the river water quality status was moderately polluted.Based on the findings, it could be concluded that DO, BOD, COD, Total Phosphate and Total Coliform negatively impacted the water quality status of Ciliwung River.
–The aim of this research was to examine the ability of butterhead lettuce (Lactuca sativa L. var... more –The aim of this research was to examine the ability of butterhead lettuce (Lactuca sativa L. var. Capitata) to absorb the nitrogen and phosphorus derived from the waste of tilapia (Oreochromis niloticus) cultivation in a aquaponic system. Tilapia was cultivated along with three treatments of plant namely T1 (without plants), T2 (10 plants) and T3 (20 plants). The experiment lasted for 6 weeks. TAN, Ammonia (NH 3 and NH 4), NO 2 , NO 3, and PO 4 were lower in the treatment of T3 than those at T1 and T2. N and P uptake in T3 was higher than that of in T2. In the term of lettuce growth performance, RGR (Relative Growth Rate) and SR (Survival Rate) were similar. FCR (Food Conversion Ratio) of fish in T2 was higher than that of in T3, while T3 had better SGR and SR.
As much as 7 locations of water quality monitoring during 2012-2014 in Pesanggrahan River were co... more As much as 7 locations of water quality monitoring during 2012-2014 in Pesanggrahan River were collected. The purpose of this study was to integrate water quality class and spatial analysis of land use and land cover in Pesanggrahan River. Water quality characteristic were determined by using Storet index and Pollution index. The study results revealed that the current water quality characteristic is class 4. River water quality class recommendation is class 3, and target river water quality class is class 2. It means that current river water characteristic can be used for irrigation, agriculture or other uses that require the same water quality with these purposes. The spatial analysis of each river segment by interpretation of satellite images pointed out that there was still dry land farming area in West Jakarta, South Jakarta, and Depok.
Increasing fish cultivation activity triggers negative impact on the environment. An effort likel... more Increasing fish cultivation activity triggers negative impact on the environment. An effort likely applied to cope with this problem is phytoremediation with aquaponics system. Aims of this study were to process organic waste from the cultivation of gouramy, and then the processed waste is utilized as a medium for growing romaine lettuce in recirculation systems and to compare the effectiveness of hydroponics-aquaponics recirculation system on romaine lettuce growth. Organic waste such as feed residuals and feces from the cultivation of gouramy could be processed with phytoremediation by romaine lettuce. The organic material after the process of decomposition could be utilized for romaine lettuce growth. Final weight of romaine lettuce was 90.16 ± 13.3 g for P4 (hydroponics), 89.4 ± 7.4 g for P2 (aquaponics with 10 romaine lettuce), and 85 ± 11.5 g for P3 (aquaponics with 20 romain lettuce). The highest daily growth (DGR) and relative growth (RGR) were P4 (hydroponics) of 0.056 ± 0.001 cm/day and 0.007 ± 0.002 g/day, respectively. Organic waste from the cultivation of gouramy can be processed with phytoremediation by romaine lettuce. Organic materials such as feed residuals and feces after the process of decomposition can be utilized for romaine lettuce growth. Meanwhile the highest daily growth (GR), specific growth (SGR) and survival rate (SR) of gouramy were P2 (aquaponics with 10 romaine lettuce) at 7.43 ± 1.77g/fish/day, 1.26 ± 0.12%/day, 100%, respectively. However, the best feed conversion ratio (FCR) was P3 (aquaponics with 20 romaine lettuce) of 0.59 ± 0.28.
Floating wetlands on a container (25 L) using Vetiveria zizanioides (L) Nash was applied to remed... more Floating wetlands on a container (25 L) using Vetiveria zizanioides (L) Nash was applied to remediate crude oil spill in water for four weeks. Three plants (height 10 cm) were inserted in a pot containing rockwool, floated on crude oil spiked water. Treatment included 3 and 6 pot plants with 1% crude oil concentration. Six pot plants during 4 weeks of experiment could reduce the oil content of 91.39%, 84.60% COD, and 84.25% BOD. Meanwhile, 3 pot plants could decrease the oil content of 90.28%, 81.69% COD, and 81.10% BOD. DO at week 4 decreased. The BOD and COD did not show any significant reduction. Plants grew better in crude oil contaminated water. Those were indicated by 47.22% parent and 100% shoots could live until the study end in 1% crude oil spiked water. Meanwhile, in crude oil uncontaminated water, 30.56% parent and 40% shoots were able to live until the study end. Wet plant biomass (5.1070 g) in the crude oil contaminated water was greater than the plant biomass (4.8362 g) in crude oil uncontaminated water. RGR of V. zizanioides in crude oil contaminated water was 5.10 g/week and 4.83 g/week in uncontaminated water.
Ciliwung is the biggest river in Jakarta. It is 119 km long with a catchment area of 476 km2. It ... more Ciliwung is the biggest river in Jakarta. It is 119 km long with a catchment area of 476 km2. It flows from Bogor Regency and crosses Bogor City, Depok City, and Jakarta before finally flowing into Java Sea through Jakarta Bay. The water quality in Ciliwung River has degraded. Many factors affect water quality. Understanding the relationship between land use and surface water quality is necessary for effective water management. It has been widely accepted that there is a close relationship between the land use type and water quality. This study aims to analyze the influence of various land use types on the water quality within the Ciliwung Watershed based on the water quality monitoring data and remote sensing data in 2010 and 2014. Water quality parameters exhibited significant variations between the urban-dominated and forest-dominated sites. The proportion of urban land was strongly positively associated with total nitrogen and ammonia nitrogen concentrations. The result can provide scientific reference for the local land use optimization and water pollution control and guidance for the formulation of policies to coordinate the exploitation and protection of the water resource.
The rapid growth of water hyacinth in Cirata Reservoir becomes an issue that must be addressed, b... more The rapid growth of water hyacinth in Cirata Reservoir becomes an issue that must be addressed, because of disrupting the function of the reservoir as a power plant. Research on reduction of water hyacinth population using grass carp was performed on floating net in Cirata Reservoir, West Java, Indonesia. The number of fish stocked was 30 fishes per nets, fish average weight of 100 g/fish, 150 g/fish and 200 g/fish as treatment. Each treatment was triplicates. Hyacinth (root length of 10-15 cm and 10-15 cm height) was placed in the transect (1 x 1 m) made from PVC pipe. As much as 8000 g hyacinth was introduced in each transect. This introduction was repeated every week. Experiment lasted 4 weeks. The highest percentage of hyacinth biomass reduction (86.8 – 88.4 %) occurred on treatment of 30 fishes (size 200 g/fish). However, 100 g/fish was recommended for controlling the blooming of water hyacinth. The choice of 100 g/fish is based on the highest feeding rate (31.5-35.2%). However, since there is no regulation yet for the introduction of grass carp to the open water in Indonesia, the usage of this fish for biocontrol of aquatic weed has not yet been legally allowed.
The study aimed to investigate the bioactivity of artificially fragmented Sinularia sp. and Lobop... more The study aimed to investigate the bioactivity of artificially fragmented Sinularia sp. and Lobophytum sp. transplanted at 3 m and 10 m seawater depth. Artificial fragmentation and transplantation was performed at Pramuka Island, Kepulauan Seribu. Lobophytum sp. raw extract showed higher bioactivity toward S. aureus and E. coli than that of Sinularia sp. Bioactivity of Lobophytum sp. and Sinularia sp. at depth of 10 m indicated higher than that of 3 m depth. Bioactivity of Lobophytum towards Artemia salina was classified as very toxic, meanwhile bioactivity of Sinularia sp was toxic.
The surface sediments were identified from west part of Java Sea to evaluate spatial distribution... more The surface sediments were identified from west part of Java Sea to evaluate spatial distribution and ecological risk potential of heavy metals (Hg, As, Cd, Cr, Cu, Pb, Zn and Ni). The samples were taken from surface sediment (<0.5 m) in 26 m up to 80 m water depth with Eikman grab. The average material composition on sediment samples were clay (9.86%), sand (8.57%) and mud sand (81.57%). The analysis showed that Pb (11.2%), Cd (49.7%), and Ni (59.5%) exceeded of Probably Effect Level (PEL). Base on ecological risk analysis, Cd ( :300.64) and Cr ( :0.02) were categorized to high risk and low risk criteria. The ecological risk potential sequences of this study were Cd>Hg>Pb>Ni>Cu>As>Zn>Cr. Furthermore, the result of multivariate statistical analysis shows that correlation among heavy metals (As/Ni, Cd/Ni, and Cu/Zn) and heavy metals with Risk Index (Cd/Ri and Ni/Ri) had positive correlation in significance level p<0.05. Total variance of analysis factor was 80.04% and developed into 3 factors (eigenvalues >1). On the cluster analysis, Cd, Ni, Pb were identified as fairly high contaminations level (cluster 1), Hg as moderate contamination level (cluster 2) and Cu, Zn, Cr with lower contamination level (cluster 3).
Ciliwung is the biggest river in Jakarta. It is 119 km long with a catchment area of 476 km2. It ... more Ciliwung is the biggest river in Jakarta. It is 119 km long with a catchment area of 476 km2. It flows from Bogor Regency and crosses Bogor City, Depok City, and Jakarta before finally flowing into Java Sea through Jakarta Bay. The water quality in Ciliwung River has degraded. Many factors affect water quality. Understanding the relationship between land use and surface water quality is necessary for effective water management. It has been widely accepted that there is a close relationship between the land use type and water quality. This study aims to analyze the influence of various land use types on the water quality within the Ciliwung Watershed based on the water quality monitoring data and remote sensing data in 2010 and 2014. Water quality parameters exhibited significant variations between the urban-dominated and forest-dominated sites. The proportion of urban land was strongly positively associated with total nitrogen and ammonia nitrogen concentrations. The result can provide scientific reference for the local land use optimization and water pollution control and guidance for the formulation of policies to coordinate the exploitation and protection of the water resource
The main problem of coastal waters in Indonesia is generally caused by anthropogenic activities t... more The main problem of coastal waters in Indonesia is generally caused by anthropogenic activities that promoting the accumulation of organic matters in sediments. It was well-known that organic matters in sediment might influence the macrozoobenthic communities. AMBI and M-AMBI are two recent developed indices which could be used to evaluate the health of soft bottom macrozoobenthic community and their ecological quality status. This present study was aimed to compare and evaluate the ecological status of macrozoobenthic communities in Tangerang coast (northern part of Java) and Palabuhanratu Bay (southern part of Java) based on AMBI and M-AMBI indices. This study was conducted in April-May 2013 in Tangerang coastal area, and in May 2016 in Palabuhanratu Bay. There are 18 sampling sites in the Tangerang coast, and 30 sampling sites in Palabuhanratu Bay. The results showed that the disturbance level of macrozoobenthos community in Palabuhanratu Bay based on AMBI analysis ranged from undisturbed to slightly disturbed, while in Tangerang coastal waters ranged from undisturbed to moderate disturbed. Ecological quality status based on the M-AMBI ranged from poor to high for both locations. The AMBI and M-AMBI indices showed that benthic environment in Palabuhanratu Bay was ecologically better than that inTangerang coastal waters.
Kualitas lingkungan negeri kita seyogyanya
semakin hari semakin dihiasi dengan semakin
terjaganya... more Kualitas lingkungan negeri kita seyogyanya semakin hari semakin dihiasi dengan semakin terjaganya dan terpeliharanya lingkungan, yang disokong oleh semakin meningginya pemahaman segenap pemangku kepentingan lingkungan dan ditopang oleh semakin komprehensifnya regulasi dan kebijakan yang mengimplementasikan kedua hal tersebut. Namun ironisnya, terkadang pada sebagian jengkal habitat diindikasikan kondisi lingkungan yang semakin terpuruk secara de facto, disebabkan oleh kerakusan umat manusia dalam mengeksploitasi sumber daya alam tanpa mengindahkan kemungkinan terganggunya homeostasi ekologi. Hal ini sebagai buah dari ketidaktahuan, keapatisan, pengabaian, dan pembiaran. Berbagai hal terkait dengan memburuknya kualitas lingkungan tersebut, serta beberapa upaya yang barangkali bisa dilakukan dan diterapkan, dicuplik dan dielaborasi dalam buku yang hadir kehadapan khalayak pembaca dengan selingkung bahasa yang ringan, sederhana, dan popular ini.
Kegiatan ini merupakan salah satu bagian dari tanggung jawab terhadap lingkungan dari perusahaan ... more Kegiatan ini merupakan salah satu bagian dari tanggung jawab terhadap lingkungan dari perusahaan yang merupakan upaya berkelanjutan dalam rangka menjaga dan melestarikan lingkungan sekitar dengan melibatkan segenap pemangku kepentingan (stakeholders) untuk bekerjasama dalam upaya perlindungan dan pengelolaan lingkungan hidup di sekitar Lapangan Pulai Gading.
Puji syukur dipanjatkan kehadirat Ilahi, karena atas perkenanNyalah, buku arahan tentang Penentua... more Puji syukur dipanjatkan kehadirat Ilahi, karena atas perkenanNyalah, buku arahan tentang Penentuan Status Mutu Perairan Pesisir ini dapat disusun dan dituntaskan dengan baik. Buku ini dimaksudkan untuk memberi arahan bagi segenap pemangku kepentingan (stakeholders) perairan pesisir baik pemerintah, masyarakat, akademisi, dan pihak lainnya dalam memberikan penilaian status kuaitas perairan pesisir. Buku ini juga dapat dijadikan bahan rujukan bagi mahasiswa baik program sarjana, master, maupun doktor yang mengikuti mata perkuliahan: Pencemaran Perairan dan Bioindikator, Analisis Mengenai Dampak Lingkungan Perairan, Kualitas Air, Kerentanan dan Analisis Risiko Lingkungan, Ekologi dan Pembangunan, dsb. Penulis menghaturkan terima kasih kepada KLH yang telah mendorong dan mensupport penulisan buku ini, serta segenap pihak yang telah memberikan sumbangsih baik secara langsung maupun tak langsung terhadap penulisan buku arahan sederhana ini. Akhir kata, semoga buku arahan sederhana dan ringkas ini dapat memberikan manfaat bagi pengembangan ilmu pengetahuan dan teknologi di tanah air tercinta ini serta dapat digunakan sebagai bahan rujukan dalam penilaian kualitas perairan pesisir.
Penilaian dokumen Amdal yang pada intinya berisi formulasi tentang dampak lingkungan, pengelolaan... more Penilaian dokumen Amdal yang pada intinya berisi formulasi tentang dampak lingkungan, pengelolaan dan pemantauan lingkungan, selalu diakhiri dengan penentuan kelayakan/ketidaklayakan lingkungan bagi rencana usaha/kegiatan yang dinilai dokumen Amdal-nya. Dalam penilaian kelayakan lingkungan tersebut dibutuhkan semacam panduan yang ditujukan untuk memudahkan tim teknis dan komisi Amdal melakukan penilaian akhir tentang kelayakan/ketidaklayakan lingkungan dari suatu rencana usaha/kegiatan. KLH telah membangun 10 kriteria penentuan kelayakan lingkungan. Namun demikian kriteria tersebut perlu disertai dengan petunjuk yang lebih teknis yang pada intinya menjabarkan 10 kriteria tersebut. Penjabaran dari 10 kriteria kelayakan lingkungan inilah yang menjadi esensi dari naskah akademik ini yang diejawantahkan dalam 21 tolok ukur berikut pemberikan nilai (skor) dari masing-masing tolok ukur tersebut. Nilai agregat dari semua tolok yang menyatakan layak lingkungan berkisar 16 – 21 point. Kegiatan pembuatan naskah akademik (academic paper) Pedoman Penentuan Kelayakan Lingkungan ini dapat terselenggara atas kerjasama DANIDA (Denmark) dengan KLH melalui program ESP (Environmental Support Program) fase 2. Selanjutnya bekerjasama dengan PPLH-LPPM-IPB yang dalam proses pengkajiannya diketuai oleh Hefni Effendi. Academic paper ini disusun melalui serangkaian kegiatan berupa penelaahan pustaka, penelaahan peraturan terkait, dan focus group discussion (FGD). FGD melibatkan berbagai pemangku kepentingan lingkungan seperti akademisi, pemerhati lingkungan, praktisi usaha/kegiatan, Badan Lingkungan Hidup Daerah (BLHD), dan Lembaga Swadaya Masyarakat. Akhir kata dihaturkan terima kasih kepada semua pihak yang telah berkontribusi terhadap pembuatan naskah akademik ini. Semoga naskah akademik ini bermanfaat bagi semua pemangku kepentingan (stakeholders) Amdal dalam menentukan kelayakan lingkungan dari suatu rencana usaha/kegiatan.
Sebagai sebuah entitas pendidikan tinggi yang peduli terhadap pelestarian lingkungan, IPB mencana... more Sebagai sebuah entitas pendidikan tinggi yang peduli terhadap pelestarian lingkungan, IPB mencanangkan program green campus yang berupa upaya menciptakan kampus IPB sebagai sebuah kampus yang ramah lingkungan ditinjau dari segi keasrian lingkungan kampus, penghematan penggunaan energi, , pengelolaan sampah, transportasi yang ramah lingkungan, dsb, yang pada intinya dimaksudkan untuk membuat kampus IPB sebagai miniatur anasir ekologis yang bisa saling hidup berdampingan dengan nyaman.
Lingkungan hidup adalah kesatuan ruang dengan semua benda, daya, keadaan, dan makhluk hidup, term... more Lingkungan hidup adalah kesatuan ruang dengan semua benda, daya, keadaan, dan makhluk hidup, termasuk manusia dan perilakunya, yang mempengaruhi alam itu sendiri, kelangsungan perikehidupan, dan kesejahteraan manusia serta makhluk hidup lain.
Pasal 33 ayat (4) : Perekonomian nasional diselenggarakan berdasarkan atas demokrasi ekonomi deng... more Pasal 33 ayat (4) : Perekonomian nasional diselenggarakan berdasarkan atas demokrasi ekonomi dengan prinsip kebersamaan, efisiensi, berkeadilan, berkelanjutan, berwawasan lingkungan, kemandirian, serta dengan menjaga keseimbangan dan kemajuan ekonomi nasional.
Traditional batik industrial wastewater is not well treated so far. The waste is simply dumped in... more Traditional batik industrial wastewater is not well treated so far. The waste is simply dumped into the surrounding water bodies. Raw wastewater quality characteristics of batik small and medium enterprises (SMEs) included pH (6.05), turbidity (1306 NTU/Nephelometric Turbidity Unit), TSS/Total Suspended Solid (1248 mg/l) and COD/Chemical Oxygen Demand (3712.5 mg/l). M. oleifera seed powder coagulant addition and deposition length as well as their interactions in batik effluent treatment significantly (0.01) affected turbidity decrease. Interaction of M. oleifera seed powder coagulant addition (4000 mg/l) and deposition length (180 minutes) showed the lowest turbidity decline namely 59.25 NTU (95.5% reduction). M. oleifera seed powder coagulant addition significantly (0.01) affected TSS reduction. Deposition length and the interaction between the coagulant addition and deposition length did not significantly affect the TSS. Treatment of 5000 mg/l M. oleifera seed coagulant and 60 minutes precipitation gave the best results with the lowest TSS of 156.00 mg/l (87.5% reduction). In general, the best treatment combination was shown by treatment of 5000 mg/l coagulant addition and 180 minutes long deposition which eventually produced turbidity of 61 NTU and TSS of 170 mg/l. However further investigation need to be carried out to treat the remaining high COD.
As much as 7 locations of water quality monitoring during 2012-2014 in Pesanggrahan River were co... more As much as 7 locations of water quality monitoring during 2012-2014 in Pesanggrahan River were collected. The purpose of this study was to integrate water quality class and spatial analysis of land use and land cover in Pesanggrahan River. Water quality characteristic were determined by using Storet index and Pollution index. The study results revealed that the current water quality characteristic is class 4. River water quality class recommendation is class 3, and target river water quality class is class 2. It means that current river water characteristic can be used for irrigation, agriculture or other uses that require the same water quality with these purposes. The spatial analysis of each river segment by interpretation of satellite images pointed out that there was still dry land farming area in West Jakarta, South Jakarta, and Depok.
In order to obtain a raw description of water quality of River Ciapus, River Cihideung, and lak... more In order to obtain a raw description of water quality of River Ciapus, River Cihideung, and lake in the near of Dramaga Campus of IPB, a grab sampling on water quality parameter was performed on 5 sites. As many as 29 water quality parameters were measured. Those parameters were compared to threshold water quality (GR No 82 / 2001) class III for fisheries and animal husbandry. Water quality standard stipulated in Government Regulation of Indonesia (GR) No 82 /2001 on Water Quality and Water Pollution Management was applied in assessment of river water quality. This GR has 48 freshwater water quality parameter including physical parameter, anorganic chemical parameter, organic chemical parameter, microbiology, and radioactivity. There are 4 classes of water quality within this GR namely class 1 as potable water sources, class 2 for water recreation, class 3 for fisheries and animal husbandry, class 4 for agriculture. Provincial government has an obligation to set up river class for the river flowing within its area. Once the river has already been set up its class, all stakeholders have to make any effort to obey this determined class. Provincial government then monitors regularly river water quality 3 times/year. Storet Index or Water Pollution Index is normally applied in analysis and interpretation of river water quality (Ministry of Environment Decree No 115/2003). In order to assess the suitability of water for diverse uses, there is a need to devolve an index similar to the air quality model that will categorize the quality of water. This index should integrate the significant physico-chemical and biological constituents of water and present them in a simple, yet scientifically defensible manner (Lumb et al., 2006). Calculation of water pollution index to determine the healthiness of the river and lake was also carried out. All 5 sampling sites denote pollution index (0.728-0.892), pointing out good water quality, especially for the purpose of fisheries and animal husbandry. The water quality might still support the thrive of fish and other aquatic creatures in this river and lake. Campus activity might not bring about an effect to the healthiness of the river and lake. However, to convince this initial rapid assessment result, a series of water quality parameter samplings representing much more spatial and temporal need to be pursued to obtain a through description of river and lake water quality status of IPB Dramaga Campus. All five sampling sites at River Ciapus, River Cihideung, and lake at PPLH displayed water quality parameter fulfilling standard for fisheries and animal husbandry (Government Regulation No 82/2001). Several literatures cited the importance of water quality index application in determination of river water quality status. Water quality index plays a major role in water quality assessment of a given source as a function of time and other influencing factors (Poonam et al., 2014). Water quality index (WQI) is a valuable and unique rating to depict the overall water quality status in a single term that is helpful for the selection of appropriate treatment technique to meet the concerned issues. However, WQI depicts the composite influence of different water quality parameters and communicates water quality information to the public and legislative decision makers (Tyagi et al., 2013). Rapid water quality assessment using grab sampling was also reported by Banerjee and Srivastava (2009), grab surface water samples from 12 locations were collected, processed and analyzed for 11 pre-identified variables. Besides providing the raw baseline data, the information was normalized and integrated by applying WQI. The average surface water quality surrounding IIE-Pantnagar was found to be satisfactory in terms of its potability after conventional treatment and disinfection. Another report of water quality index usage by Komar et al (2014) stated that based on the WQI results majority of the samples are falling under excellent to good category and suitable for drinking water purposes (Komar et al., 2014). Water Quality Index was also applied in Dokan Lake, Kurdistan region, Iraq using ten water quality parameters. The impact of various anthropogenic activities was evident. It is suggested that monitoring of the lake is necessary for proper management. Application of the WQI is also suggested as a very helpful tool that enables the public and decision makers to evaluate water quality of lakes (Alobaidy et al., 2010). Any number of water quality measurements can serve, and have already been used, as indicators of water quality. However, there is no single measure that can describe overall water quality for any one body of water, let alone at a global level. As such, a composite index that quantifies the extent to which a number of water quality measures deviate from normal, expected or 'ideal' concentrations may be more appropriate for summarizing water quality conditions across a range of inland water types and over time (UNEP, 2007). The water quality index is principally designed to (1) provide numbers so that various waters can be compared directly with one another, (2) allow for comparison of water-quality changes with time, (3) indicate waters of both "good" and "bad" quality, and (4) provide values which managers and other nontechnical personnel can use more easily to characterize water quality (Stoner, 1978). A rapid interpretation of river water quality is a compulsory since river is a dynamic ecosystem, influenced by various activities in the river bank. Hence a preliminary rapid river water quality status determination using pollution index on locations near IPB Dramaga campus was simulated. Based on grab sampling on 5 sites in River Cihideung, River Ciapus, and Lake of PPLH, all water quality parameter met water quality standard class III for fisheries and animal husbandry as stipulated in Government Regulation No 82/2001. Application of water pollution index towards 5 sampling sites denotes good water quality status with water pollution index ranging from 0.728 to 0.892
The Mahakam Delta typically consist of several ecosystems and has been identified as one of biodi... more The Mahakam Delta typically consist of several ecosystems and has been identified as one of biodiversity hotspot in Kalimantan Island. In order to provide phytoplankton spatial distribution of diversity and abundance data, a research on 4 stations representing delta plain (ST1) and delta front (ST2, ST3, ST4) was performed. The studies describe phytoplankton community that exist in this region and multivariate analysis using correspondent analysis (CA). There were 48 taxa phytoplankton belonging to Bacillariophyceae (35), Dinophyceae (6), Chlorophyceae (4), and Cyanophyceae (3). The highest taxa occurred in ST3 with diversity index of 2.09, followed by ST2 (1.95), ST1 (1.15), and ST4 (0.9). Diversity index of ST3, ST2, and ST1 delta was categorized to moderate stable community, while ST4 was categorized to unstable community. Bacillariophyceae was not only as the highest diversity class but also as the highest abundance, recorded in ST3. The abundance class ranged 1.4x10 5 cell/m 3 to 2.2x10 6 cell/m 3. Generally, phytoplankton diversity and abundance in delta front was higher than delta plain. Human activities and physical process likely influenced diversity and abundance of phytoplankton in Delta Mahakam.
Spreading heavy metals in the water column may be accumulated in sediment because of low solubili... more Spreading heavy metals in the water column may be accumulated in sediment because of low solubility then become sensitivity indicator for aquatic organism existence. Ecological risk is assessed through the heavy metals concentration in the surface sediment. Sediment samples were grabbed from 20 stations in Mahakam Delta divided into four zones. Hakanson method was used to identify potential risk ecology then multivariate analysis was used to determine heavy metals pollution source. The results showed that Zn (0.12 mg/kg), Cr (4.77 mg/kg), Cd (76.17 mg/kg) and Ni (33.48 mg/kg) concentration exceeded Threshold Effect Level furthermore Ni also exceeded Probable Effect Level. Base on the type, potential risk heavy metals sequence were Pb>As>Cd>Ni>Zn>Cr>Cu. The criteria of ecological risk on Pb and As were considerable risk (í µí°¸í µí± í µí± Pb: 52.18 and í µí°¸í µí± í µí± As: 50.00) and the others were low risk. Moreover, the potential ecological risk sequence base on the location of study were 7 belong to considerable risk, ST 12 was low risk and others location were medium risk.
X. 2015. Dissolved oxygen stratification and response to thermal structure and long-term climate ... more X. 2015. Dissolved oxygen stratification and response to thermal structure and long-term climate change in a large and deep subtropical reservoir (Lake Qiandahohu, China). Water Research. 75:249-258
Ciambulawung River is used for micro-hydro power plant (capacity 10.000 Watt). The purpose of thi... more Ciambulawung River is used for micro-hydro power plant (capacity 10.000 Watt). The purpose of this study was to determine the water quality status of Ciambulawung River by applying Water Pollution Index and NSF-WQI. The pollution index ranged 0.56 – 0.78 and NSF WQI ranged 87 – 88. Hence the river water quality was considered good. Based on pollution index and NSF WQI index it is concluded that communities living along river bank and micro-hydro power plant do not negatively affect the water quality of Ciambulawung River.
PUSAT PENELITIAN LINGKUNGAN HIDUP LEMBAGA PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT INSTITUT PE... more PUSAT PENELITIAN LINGKUNGAN HIDUP LEMBAGA PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT INSTITUT PERTANIAN BOGOR (PPLH-LPPM-IPB)
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Papers by Hefni Effendi
substrate type.
substrate type.
semakin hari semakin dihiasi dengan semakin
terjaganya dan terpeliharanya lingkungan,
yang disokong oleh semakin meningginya
pemahaman segenap pemangku kepentingan
lingkungan dan ditopang oleh semakin
komprehensifnya regulasi dan kebijakan yang
mengimplementasikan kedua hal tersebut.
Namun ironisnya, terkadang pada sebagian
jengkal habitat diindikasikan kondisi lingkungan
yang semakin terpuruk secara de facto,
disebabkan oleh kerakusan umat manusia
dalam mengeksploitasi sumber daya alam tanpa
mengindahkan kemungkinan terganggunya
homeostasi ekologi. Hal ini sebagai buah dari
ketidaktahuan, keapatisan, pengabaian, dan
pembiaran.
Berbagai hal terkait dengan memburuknya
kualitas lingkungan tersebut, serta beberapa
upaya yang barangkali bisa dilakukan dan
diterapkan, dicuplik dan dielaborasi dalam
buku yang hadir kehadapan khalayak pembaca
dengan selingkung bahasa yang ringan,
sederhana, dan popular ini.
Buku ini dimaksudkan untuk memberi arahan bagi segenap pemangku kepentingan (stakeholders) perairan pesisir baik pemerintah, masyarakat, akademisi, dan pihak lainnya dalam memberikan penilaian status kuaitas perairan pesisir.
Buku ini juga dapat dijadikan bahan rujukan bagi mahasiswa baik program sarjana, master, maupun doktor yang mengikuti mata perkuliahan: Pencemaran Perairan dan Bioindikator, Analisis Mengenai Dampak Lingkungan Perairan, Kualitas Air, Kerentanan dan Analisis Risiko Lingkungan, Ekologi dan Pembangunan, dsb.
Penulis menghaturkan terima kasih kepada KLH yang telah mendorong dan mensupport penulisan buku ini, serta segenap pihak yang telah memberikan sumbangsih baik secara langsung maupun tak langsung terhadap penulisan buku arahan sederhana ini.
Akhir kata, semoga buku arahan sederhana dan ringkas ini dapat memberikan manfaat bagi pengembangan ilmu pengetahuan dan teknologi di tanah air tercinta ini serta dapat digunakan sebagai bahan rujukan dalam penilaian kualitas perairan pesisir.
Dalam penilaian kelayakan lingkungan tersebut dibutuhkan semacam panduan yang ditujukan untuk memudahkan tim teknis dan komisi Amdal melakukan penilaian akhir tentang kelayakan/ketidaklayakan lingkungan dari suatu rencana usaha/kegiatan.
KLH telah membangun 10 kriteria penentuan kelayakan lingkungan. Namun demikian kriteria tersebut perlu disertai dengan petunjuk yang lebih teknis yang pada intinya menjabarkan 10 kriteria tersebut.
Penjabaran dari 10 kriteria kelayakan lingkungan inilah yang menjadi esensi dari naskah akademik ini yang diejawantahkan dalam 21 tolok ukur berikut pemberikan nilai (skor) dari masing-masing tolok ukur tersebut. Nilai agregat dari semua tolok yang menyatakan layak lingkungan berkisar 16 – 21 point.
Kegiatan pembuatan naskah akademik (academic paper) Pedoman Penentuan Kelayakan Lingkungan ini dapat terselenggara atas kerjasama DANIDA (Denmark) dengan KLH melalui program ESP (Environmental Support Program) fase 2. Selanjutnya bekerjasama dengan PPLH-LPPM-IPB yang dalam proses pengkajiannya diketuai oleh Hefni Effendi.
Academic paper ini disusun melalui serangkaian kegiatan berupa penelaahan pustaka, penelaahan peraturan terkait, dan focus group discussion (FGD). FGD melibatkan berbagai pemangku kepentingan lingkungan seperti akademisi, pemerhati lingkungan, praktisi usaha/kegiatan, Badan Lingkungan Hidup Daerah (BLHD), dan Lembaga Swadaya Masyarakat.
Akhir kata dihaturkan terima kasih kepada semua pihak yang telah berkontribusi terhadap pembuatan naskah akademik ini. Semoga naskah akademik ini bermanfaat bagi semua pemangku kepentingan (stakeholders) Amdal dalam menentukan kelayakan lingkungan dari suatu rencana usaha/kegiatan.