To see the other types of publications on this topic, follow the link: Pond management.

Journal articles on the topic 'Pond management'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Pond management.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Willkommen, Sandra, Matthias Pfannerstill, Björn Guse, Uta Ulrich, and Nicola Fohrer. "PondR: a process-oriented model to simulate the hydrology of drainage ponds." Journal of Hydroinformatics 20, no. 1 (October 12, 2017): 149–63. http://dx.doi.org/10.2166/hydro.2017.038.

Full text
Abstract:
Abstract Drainage ponds are a useful measure to manage water resources. However, these small water bodies are characterized by highly dynamic internal processes. This article discusses a simple process-oriented model developed to simulate temporal dynamics of internal processes within drainage ponds. The PondR model is able to simulate the relevant hydrological processes of the pond by using commonly available input data. For model development, data from a 3-year monitoring campaign of the investigated drainage pond served to validate the newly developed model for the autumn and winter time periods. A temporal parameter sensitivity analysis (TEDPAS) revealed that groundwater parameters are predominant during the whole year. The model performed well in simulating outflow together with simulated pond volume and improved the understanding of the hydrological regime for drainage ponds. Regarding the practical benefit, the developed PondR model could be useful in future studies for more precise planning of pond dimensions and water resource management in the field of research and engineering services.
APA, Harvard, Vancouver, ISO, and other styles
2

Erna Ratnawati, Irmawati Sapo, Akhmad Mustafa,. "Penentuan Faktor Pengelolaan Tambak Yang Mempengaruhi Produktivitas Tambak Kabupaten Mamuju, Provinsi Sulawesi Barat [Determining Of Brackishwater Pond Management Factors That Effect On The Brackishwater Pond Productivity In Mamuju Regency, West Sulawesi Province]." Jurnal Ilmiah Perikanan dan Kelautan 2, no. 2 (January 24, 2019): 199. http://dx.doi.org/10.20473/jipk.v2i2.11651.

Full text
Abstract:
Abstract One of regency in West Sulawesi Province that has vast area of brackishwater ponds is Mamuju Regency. However, there is not yet information on pond management that conducted by farmers in Mamuju Regency. Hence, it was carried out a research that aim to know pond management factors that effect on the pond productivity in Mamuju Regency. Survey method that applied to find primary data and ponds production also pond management by means of questionnaires. The dependent variable in this research was total production, while the independent variables were pond management factors that consists of 30 variables. Multiple regressions with dummy variable were used to analyze the data in predicting total production. The results show that total production of brackishwater ponds in Mamuju Regency is 349.5 kg/ha/season in average. There are seven pond management variables that effect on total production in Mamuju Regency i.e. stocking density of milkfish, stocking density of tiger prawn, out-break disease, initial liming, duration of milkfish culture, initial pest control with teaseed and size of tiger prawn that stocked in the brackihswater pond. The total productivity of brackishwater pond can be increase through increasing dosage of initial liming, increasing duration of milkfish culture, increasing dosage of teaseed as initial pest control as well as increasing size of tiger prawn that stocked in the brackishwater ponds.
APA, Harvard, Vancouver, ISO, and other styles
3

Gharabaghi, B., A. Fata, T. Van Seters, R. P. Rudra, G. MacMillan, D. Smith, J. Y. Li, A. Bradford, and G. Tesa. "Evaluation of sediment control pond performance at construction sites in the Greater Toronto Area." Canadian Journal of Civil Engineering 33, no. 11 (November 1, 2006): 1335–44. http://dx.doi.org/10.1139/l06-074.

Full text
Abstract:
Receiving water quality concerns associated with increased construction activities in recent years in the Greater Toronto Area has prompted the Toronto and Region Conservation Authority (TRCA) to evaluate design criteria for sediment control ponds employed during the construction period. Stormwater management ponds located in the towns of Richmond Hill and Markham were monitored to obtain stormwater runoff quantity and influent-effluent quality data during site development. The ponds were designed and constructed in accordance with the Ontario Ministry of the Environment Stormwater management planning and design manual 2003 for an enhanced level of protection (i.e., 80% total suspended solids removal). A hydrodynamic and sediment-transport model was used to examine the effect of pond geometry on sediment removal efficiency under varying storm events. The monitoring data and the modelling results clearly demonstrate the importance of proper pond size and geometry design. This paper focuses on the effect of the ratio of pond length to pond width in minimizing the short-circuiting effect and improvement of the sediment removal efficiency of stormwater management ponds. The results of this study will be useful in updating the design criteria for stormwater management ponds.Key words: stormwater, management, pond, design, sediment.
APA, Harvard, Vancouver, ISO, and other styles
4

Olding, Daniel D. "Algal Communities as a Biological Indicator of Stormwater Management Pond Performance and Function." Water Quality Research Journal 35, no. 3 (August 1, 2000): 489–504. http://dx.doi.org/10.2166/wqrj.2000.029.

Full text
Abstract:
Abstract An investigation into phytoplankton and periphyton algal communities of two recently constructed Stormwater management ponds suggests that Stormwater impacts on biological communities are reduced during passage through the ponds, providing a degree of protection for biological communities in their receiving waters. In both ponds, disturbance effects from the incoming Stormwater on algal community richness and evenness appear to be greatest in the sediment forebay and are reduced in the main pond. However, the nature of the disturbance in the two systems can be seen to be fundamentally different from a biological perspective, with Rouge Pond functioning primarily to reduce toxins harmful to algal communities (e.g., heavy metals), and Harding Pond acting to reduce nutrients. The taxonomic composition of the two sites provides an indication of the quality of the incoming Stormwater. Rouge Pond, which contains many marine and brackish water species, receives Stormwater runoff from a major highway, while Harding Pond, containing more nutrient rich species, receives Stormwater primarily from residential properties. Despite the nutrient-rich conditions present in both ponds, nuisance blue-green algae (cyanobacte-ria) are conspicuously absent, and the ponds appear to have little potential for developing harmful algal blooms. The lack of blue-green algae can be linked to the hydraulic functioning of the ponds, suggesting that Stormwater facilities may be engineered to inhibit undesirable algal communities.
APA, Harvard, Vancouver, ISO, and other styles
5

-, Sukemi, Marlina Sylvia, Samsuryadi Samsuryadi, Hadipurnama Satria, and Apriansyah Putra. "STUDI KETINGGIAN KOLAM RETENSI SIMPANG POLDA PALEMBANG UNTUK LANGKAH PENENTUAN KEBIJAKAN." Jurnal Informatika dan Rekayasa Elektronik 4, no. 1 (April 19, 2021): 21–29. http://dx.doi.org/10.36595/jire.v4i1.332.

Full text
Abstract:
Simpang Polda retention pond is an alternative flood control construction which is designed to temporarily hold exceeding water flow during rainfall in the vicinity of Simpang Polda, in order to avoid or reduce flood in the area. Retention ponds are prone to sedimentation due to garbage and other materials settling down in the bottom of the pond, which in turn causing reduction of total volume of water it can contain. To ensure that the pond has enough volume, depth measurements were done so that the pond can function as intended. Boat robots from previous research in 2019 and 2020 were utilized as the method to measure the depth of the retention pond. The boat robots mapped the depth of the whole pond area with the help of remote control and single beam sensor. Measurement result shows that the Simpang Polda retention pond has an average depth of 2.245 m. Based on this finding it is suggested that the local government water resource management agency (Dinas PUPR Dept. PSDA) to follow up with the appropriate sediment removal procedures to return the pond’s depth back to the original value when it was constructed
APA, Harvard, Vancouver, ISO, and other styles
6

Silva, Ana Maria Dias da, Levy de Carvalho Gomes, and Rodrigo Roubach. "Growth, yield, water and effluent quality in ponds with different management during tambaqui juvenile production." Pesquisa Agropecuária Brasileira 42, no. 5 (May 2007): 733–40. http://dx.doi.org/10.1590/s0100-204x2007000500017.

Full text
Abstract:
The objective of this work was to evaluate the effect of pond management on fish feed, growth, yield, survival, and water and effluent quality, during tambaqui (Colossoma macropomum) juvenile production. Fish were distributed in nine 600 m² earthen ponds, at a density of 8 fish per m²; the rearing period was 60 days. Three different pond management were applied: limed and fertilized (LimFer), limed (Lim), and natural (Nat). Fish were fed with a commercial ration containing 34% crude protein three times daily. There were no significant differences in fish growth or yield. Three main items found in tambaqui stomach were insect, zooplankton and ration, without a significant difference among treatments in proportion. Alkalinity, hardness, and CO2 were greater in LimFer and Lim ponds. Chlorophyll a, transparency, ammonia, nitrite, temperature, and dissolved oxygen of pond water were not significantly different among treatments. Biochemical oxygen demand, total phosphorus, orthophosphate, ammonia, and nitrite were significantly greater in effluents from LimFer ponds. Pond fertilization should be avoided, because growth and yield were similar among the three pond management systems tested; besides, it produces a more impacting effluent.
APA, Harvard, Vancouver, ISO, and other styles
7

Adek Rizaldi, M., and Lily Montarcih Limantara. "Wetland as revitalization pond at urban area based on the eco hydrology concept." International Journal of Engineering & Technology 7, no. 3.29 (August 24, 2018): 143. http://dx.doi.org/10.14419/ijet.v7i3.29.18544.

Full text
Abstract:
Universitas Indonesia (UI) has a campus in Depok with six ponds, five of which are artificial ponds and one of the catchment area that operates in the central Ciliwung Sub-watershed. The ponds (Kenanga, Agathis, Mahoni, Puspa, Ulin and Salam "KAMPUS") are designed as one of the catchment area, referring to Presidential Decree No. 32/1990 about the management of protected areas, ponds as catchment areas, flood controllers, and groundwater runoff. However, due to uncontrolled development in the catchment area of the UI pond system, KAMPUS cascade ponds transformed into a "toilet" which accommodates the liquid and solid waste of its catchment area. The mechanism designed for management in the KAMPUS cascade pond system is to utilize the cascade pond as a stabilization pond (improving water quality). One of them is utilizing Agathis cascade pond as a constructed stormwater wetland system, which is a pretreatment for the inflow to the KAMPUS pond system. This constructed wetland design is planned with several mechanisms: precipitation, filtering, chemical process by utilizing plants for absorption, nutrient transformation and eliminating pathogens. The result shows that this constructed wetland gives the water quality improvement percentage up to 87%. Water quality on effluent conforms with the water quality standards for irrigation and planting (grade 4) referring to Government Regulation No. 82/2001 about Water Quality Management and Pollution Control.
APA, Harvard, Vancouver, ISO, and other styles
8

Bhandari, Chandani. "Evaluation of Farm Ponds of Kharagpur Blocks of West Bengal, India." Journal of Agricultural Engineering 58, no. 04 (March 31, 2022): 385–96. http://dx.doi.org/10.52151/jae2021581.1759.

Full text
Abstract:
Marginal and small farmers of the state of West Bengal suffer from frequent droughts due to erratic rainfall patterns, high evaporation rates, and recurrent water scarcity. The majority of farmers in West Bengal have farm ponds that are grossly underutilized due to several social and technical constraints. In this study, the roles of various socio-economic factors on management of existing farm ponds were examined using a binary logit model to understand their contributions to sustainability of the livelihoods of marginal and small farmers of the region. A field survey of 155 farm ponds, owned by farmers with different socio-economic backgrounds, was undertaken in Kharagpur Blocks (I, II) of West Medinipur district in West Bengal. The study also included water budget, water quality, and economic analyses of three farm ponds having different management practices, viz. managed bentonite lined pond, managed unlined pond, and unmanaged unlined pond. Water budget analysis revealed that about 610 mm of extra water depth could be saved in bentonite-lined ponds compared to unlined ponds. Also, the water quality (as per the threshold values recommended for aquaculture life) was not deteriorated due to bentonite lining. The study suggested that the best way of utilizing pond water includes simultaneous water use for irrigation and fish cultivation, which is possible with lined ponds. Therefore, lined farm ponds with locally available cheap lining material might be a suitable intervention in the context of the socioeconomic development of small and marginal farmers of the Kharagpur region. The pond management was significantly influenced by household economic factors and pond related factors.
APA, Harvard, Vancouver, ISO, and other styles
9

Pranata, Andrian, Novi Kartika Sari, Tarmizi Tahir, Achmad Gus Fahmi, Hanifullah Habibie, Dodik Choiron, and Didik Triwibowo. "MINE WATER MANAGEMENT IN THE COAL MINING PROCESS." Sustainable Environmental and Optimizing Industry Journal 6, no. 1 (March 31, 2024): 1–12. http://dx.doi.org/10.36441/seoi.v6i1.2285.

Full text
Abstract:
The open mining method has the potential for the formation of mine water. Mine water is characterized by a high degree of acidity which affects the life of organisms and the quality of the environment indirectly or directly, therefore it needs to be managed. This study examines mine water management at PT Adaro Indonesia. The methods used in the research were field studies and laboratory experiments. Grab sampling is used to take water samples, with the test parameters being pH, Fe and Mn metals and total suspended solid (TSS). Data analysis was carried out quantitatively and descriptively. The mine water management used is in the form of a settling pond. The settling pond consists of several compartments, namely sedimentation pond, safety pond, treatment pond and mud pond. The quality of mine water management through a series of settling ponds obtained changes in pH to 6.07, Fe metal 0.0465 mg/l, Mn metal 1.3513, and TSS 35 mg/l with an efficiency of more than 50%. The quality of mine water produced after going through management has met the established regulations, namely Decree of the Minister of Environment and Forestry No. 1347/MENLHK/SETJEN/PLA.4/12/2022.
APA, Harvard, Vancouver, ISO, and other styles
10

Iswahyudi, Iswahyudi, Rosmaiti Rosmaiti, Siti Balqies Indra, and Cut Mulyani. "KERAGAAN BIOFISIK, SOSIAL DAN PENDAPATAN SERTA KELAYAKAN USAHA TANI TAMBAK SILVOFISHERY DI KECAMATAN SERUWAY, ACEH TAMIANG." Jurnal Belantara 7, no. 2 (August 19, 2024): 269–86. http://dx.doi.org/10.29303/jbl.v7i2.1045.

Full text
Abstract:
The increase in aquaculture businesses in the coastal areas of Seruway District, Aceh Tamiang Regency, has resulted in high conversion of mangrove forests into ponds. If management is not carried out, it will have an impact on coastal environmental degradation. Therefore, it is necessary to look for a sustainable pond management model. One model is silvofishery. In developing this silvofishery model, biophysical environmental data, social and economic conditions of pond cultivation are needed. The aim of this research is to determine the biophysical, social performance, income level and feasibility of a silvofishery system pond business. The research was conducted using descriptive methods with survey techniques. The research results show that the silvofishery ponds at the research location use a partite pond model. From the analysis of biophysical properties, overall results were obtained, the conditions were suitable for the development of milkfish and tiger prawn cultivation. From social performance, the results showed that silvofishery system pond farmers are still of productive age and have an average pond area of 5 ha. The income obtained from silvofishery system ponds is IDR 19,560,000/ha/year/farmer. Silvofishery pond system If the R/C value is greater than 1, then silvofishery pond farming is worth pursuing.
APA, Harvard, Vancouver, ISO, and other styles
11

Sugiyarti, Listya, and Nur Asmilia. "ANALISIS CIYCLE COSTING DAN WASTE MANAGEMENT SCENARIOS PADA KOLAM IKAN 4G DAN AZOLLA." SCIENTIFIC JOURNAL OF REFLECTION : Economic, Accounting, Management and Business 3, no. 4 (October 1, 2020): 351–60. http://dx.doi.org/10.37481/sjr.v3i4.231.

Full text
Abstract:
One of Mina Kahuripan fish cultivators in Jampang village located in Bogor Regency has innovation and achievements in managing fish and its fish feed, and is the largest fish producer in Bogor Regency. One of the innovations of fish cultivators is the use of a 4G (Four G) fish pond. Besides the fish pond innovation, there is another innovation, namely the use of the Azolla plant. This research aims to analyze the collaboration between Azolla and the 4G pond in waste management scenarios and cycle costing. This research is a qualitative research phenomenon. The data collection technique is done by using observation, interview, documentation, and experiment techniques. Respondents of this study were fish cultivators Mina Kahuripan in Jampang Bogor Village. The results showed that the cycle costing analysis between conventional and 4G fish ponds, it was seen that the production costs in conventional ponds were higher because the media used were all purchased by new categories, while the production costs for 4G fish ponds were lower even though there was a budget for Azolla plant ponds, the quality of the fish produced was guaranteed. Lower production costs are due to the fish cultivators doing waste management from the waste in making 4G fish ponds, resulting in cost efficiency. Another advantage of Waste management scenarios utilizes waste from vegetable and fruit plants that are above the 4G fish pond
APA, Harvard, Vancouver, ISO, and other styles
12

Soliman, Mostafa AM. "Water Quality and Plankton Population Abundance Affected by Earthen Ponds Management." International Journal of Oceanography & Aquaculture 7, no. 4 (2023): 1–11. http://dx.doi.org/10.23880/ijoac-16000286.

Full text
Abstract:
The study was conducted in two earthen ponds fish farming systems located at (El-Rayed area- Kafer El-Shiak governmentEgypt); namely, feed and fertilizer fish farming systems. Each system was replicated in four ponds (8000m2 each), to determine water quality, phytoplankton and zooplankton abundance. Nile tilapia (Orechromis niloticus); mullet (Mugil cephalus) and catfish (Clarias garipinus) were cultured in each pond at initial weight of 2, 30 and 50 g, respectively. The present study aimed to evaluate two fish farming systems differing in pond management procedures in the Nile Delta regions. Results apparent insignificant differences between the two fish farming systems in terms of water temperature (ranged 12.7 to 30.9°C from winter to summer months), salinity, EC and total hardness. Whilst, fertilizer fish farm had significantly high levels of pH, DO, secchi disc, total alkalinity, orthophosphate, TAN, NO2, NO3, algal abundance and chlorophyll “a” n water compared to those of feed fish farm. Significant increase (P<0.05) in phytoplankton and zooplankton abundance were observed in fertilizer fish farm compared to feed fish farm, this was due the high organic manure inputs to pond water during all seasons including winter at one ton per feddan every 10 days.
APA, Harvard, Vancouver, ISO, and other styles
13

Ajide-Akinola, Oluwadara Esther, and Ayoola Olusegun Akinwole. "Relationship between the Productivity and Nutrient Profile of Bottom Soils of Selected Regular and Integrated Fish Ponds in Ibadan, Nigeria." Asian Journal of Fisheries and Aquatic Research 25, no. 3 (September 25, 2023): 130–38. http://dx.doi.org/10.9734/ajfar/2023/v25i3673.

Full text
Abstract:
Water quality management has been considered one of the most important aspects of pond aquaculture for many years, but less attention has been given to the management of pond bottom soil. The quality of pond bottom soils greatly impacts the productivity of ponds with respect to fish production. The objective of this study is to explain the nutrient profile of bottom soils of selected regular and integrated ponds in the Ibadan metropolis, Oyo State, Nigeria. Bottom soils and water samples of three regular and three integrated ponds in Ibadan metropolis, Nigeria were sampled. In each pond, soil samples were sampled from two different points at three depths each (inlet and outlet) of 0-10cm,10-20cm and 20-30cm. Soil samples were also analysed for; pH, organic carbon, organic matter, nitrogen, phosphorous and potassium. The productivity of the ponds was evaluated using the measured parameters in line with standard procedures. The data obtained were analyzed using descriptive statistics, one-way analysis of variance, correlation and regression analysis. The organic carbon of all the ponds indicated that they were all suitable for aquaculture production with average values ranging from 0.82% to 2.66%. Three of the ponds’ bottom soil were of mineral soils having medium organic carbon of mean values 1.81%, 1.73% and 2.66% for integrated pond 3, regular ponds 1 and 3 respectively while the three other ponds were of organic soils having high organic carbon concentration of mean values 1.06%,0.82% and 1.01% for integrated ponds 3and 2 and regular pond 2. The pond soils were all neutral except two of the regular ponds with average values ranging from 7.00 to 9.60. All the mean values of phosphorous in the soil indicated that the soils were of high productivity and highly suitable for aquaculture production. Mean soil phosphorous concentration values 0.33%, 0.30%, 0.26%, 0.27%, 0.28% and 0.34% of integrated ponds 1 to 3 and regular ponds 1-3 respectively showed that the ponds were highly suitable for fish culture with respect to ability to synthesize phytoplankton and zooplanktons. The organic carbon concentration and the phosphorous concentration of all the ponds showed high productivity. The pH and the nitrogen concentration of all the ponds showed high productivity. Generally, the evaluation of the ponds in line with the three standard procedures indicated that the integrated pond soils was more productive for fish culture than the regular pond soils.
APA, Harvard, Vancouver, ISO, and other styles
14

Hossain, Md Rayhan, Fawzia Adib Flowra, Saiful Islam, Shishir Kumar Dey, and Sayeeda Sultana. "Status of fish culture in Rajshahi City Corporation of Bangladesh." Asian Journal of Medical and Biological Research 3, no. 1 (April 14, 2017): 94–102. http://dx.doi.org/10.3329/ajmbr.v3i1.32043.

Full text
Abstract:
The present study carried on 16 sampling ponds in Rajshahi City Corporation, Rajshahi, Bangladesh during the period from August, 2005 to April, 2006. The main theme of this work was to find out the impact on present status of improved traditional culture and mixed culture in various pond. This study involved the observations made on physical characteristics, ownerships system, ponds preparation, stocking combinations of fish seeds, post stocking management and maintenance, harvesting and cost analysis of 16 improved traditional managed ponds in Rajshahi City Corporation. The primary data for the study was taken from the growers of these ponds. After collecting primary data, it was analyzed by suitable statistical method. Physical characteristics of the sampling pond were found. Water depth more or less sufficient, water colour greenish, presence of sunlight was sufficient, water source was mainly drain and rain and various shaped of pond was found. Pond was prepared by traditional method using pesticides (Phostoxin, Rotanone, Sumithion, Quick fume), lime and fertilizers (Urea, TSP., Cow dung). The fish seed were stocked in different ponds. In Sac fry was stocked in 4 nursery ponds. Post stocking management and maintenance were included inorganic fertilizer (Urea, TSP), organic fertilizer cow dung, applied weekly and supplementary feeds were used daily. It was observed that 15 ponds were made profit and one pond had loss. Two types of ownership were found (three years and five years) in the study period. During the study time two types of harvesting method were found. They were partial and final harvest. Mainly two types of production cost such as variable cost (lease, pond preparation, pesticide use, fertilizer etc.) and fixed cost (cost of net, net preservation, tax of pond etc.) were observed in the study period.Asian J. Med. Biol. Res. March 2017, 3(1): 94-102
APA, Harvard, Vancouver, ISO, and other styles
15

Kumar, Manoj, and Pratap Padhy. "Environmental Perspectives of Pond Ecosystems: Global Issues, Services and Indian Scenarios." Current World Environment 10, no. 3 (December 25, 2015): 848–67. http://dx.doi.org/10.12944/cwe.10.3.16.

Full text
Abstract:
Ponds are an integral component of the hydrological system; and perform diverse roles in the biosphere. Studies on pond ecosystems are, however, often neglected, probably, due to their little size. There is no doubt that little things perform many important activities in our lives. The literature survey on pond environment studies shows very little investigative works in India; and there is no review publication on pond environment reports. In Europe, pond conservation initiative has, however, resulted in many studies on the subject. In Indian perspectives, when there is a dearth of studies on ponds, it is futile to say that there is any concrete institutional initiative on pond conservation. The 2010-2011 report of the Central Pollution Control Board (CPCB) shows that there are only 60 CPCB pond water quality monitoring stations in the country. In these scenarios, an attempt has been made in this manuscript to compile the reports on pond environment in India. The problems faced by ponds in India, mostly from pollution and encroachment, have been discussed in the text. Based on outcomes of different pond reports, some suggestions have been discussed in the end of the manuscript for an effective pond conservation initiative, and their sustainable management in India.
APA, Harvard, Vancouver, ISO, and other styles
16

Peng, Changkang, Ya Gao, Yaqin Tan, Genming Sheng, Yang Yang, Jiong Huang, Dayong Sun, Daofang Zhang, Hong Tao, and Feipeng Li. "Pollution and Release Characteristics of Nitrogen, Phosphorus and Organic Carbon in Pond Sediments in a Typical Polder Area of the Lake Taihu Basin." Water 14, no. 5 (March 6, 2022): 820. http://dx.doi.org/10.3390/w14050820.

Full text
Abstract:
There is currently a lack of knowledge on the release characteristics of nutrients from artificial pond sediments in polder areas, resulting in problems in future management of such environments, including converting polders to lakes. In this study, sediment samples were taken from a fish pond and a lotus pond in a typical polder area of the Lake Taihu Basin in China. The total nitrogen (TN, 1760–1810 mg/kg), total phosphorus (TP, 1370–1463 mg/kg) and total organic carbon (TOC, 10.1–21.2 g/kg) contents were significantly higher than those found in sediments from the adjacent aquatic system, which indicates that the legacy of agricultural activities has had an obvious cumulative effect on pond sediment nutrients. The release behavior of TN, TP and TOC varied significantly, not only under disturbed and static conditions, but also from sediments sampled at different ponds and depths. During the disturbing condition, there were continuous releases of carbon and nutrients in the lotus pond sediments, while the fish pond sediments showed a higher release at the beginning. Under static release conditions, the release of TP in the surface and bottom sediments of the fish pond increased first, then decreased and stabilized within 24 h, while the release of the lotus pond showed a slow upward trend. Despite the lower concentration of nutrients and TOC, the lotus pond sediment showed a higher release rate. The results suggested that it is necessary to adopt different strategies for different types of ponds in the project of returning polders to lakes; it is especially important to pay attention to the release of nutrients from the bottom sediments of lotus ponds in the project management.
APA, Harvard, Vancouver, ISO, and other styles
17

Bouahim, Siham, Laila Rhazi, Btissam Amami, Aline Waterkeyn, Mouhssine Rhazi, Er-Riyahi Saber, Abdelmjid Zouahri, et al. "Unravelling the impact of anthropogenic pressure on plant communities in Mediterranean temporary ponds." Marine and Freshwater Research 65, no. 10 (2014): 918. http://dx.doi.org/10.1071/mf13194.

Full text
Abstract:
Identifying the respective role of environmental, landscape and management factors in explaining the patterns in community composition is an important goal in ecology. Using a set of 32 temporary ponds in northern Morocco we studied the respective importance of local (within the pond) and regional (density of ponds in landscape) factors and the impacts of different land uses on the plant species assemblages, separating pond and terrestrial species. The main hypotheses tested were that (1) species assemblages respond to both local and regional environmental factors, (2) anthropogenic pressure has a negative influence on the number of pond species, and that (3) human activities differ in their impact on pond biodiversity. The results showed that (1) local factors explain most of the variation in plant community composition, and (2) land use impacts the communities through changing local environmental conditions, leading to a loss of typical pond species. Aside from recreation, all other activities (grazing, drainage, agriculture and partial urbanisation) significantly reduced the number of pond species. The conservation strategy for rare pond species should focus on maintaining networks of oligotrophic ponds, while allowing only low-impact activities.
APA, Harvard, Vancouver, ISO, and other styles
18

LaClaire, Linda V. "Vegetation of selected upland temporary ponds in north and north-central Florida." Bulletin of the Florida Museum of Natural History 38, no. 3 (October 17, 1995): 69–96. http://dx.doi.org/10.58782/flmnh.tjbq1845.

Full text
Abstract:
Vegetation was sampled in 13 temporary ponds located in uplands of north and north-central Florida The ponds were selected for study because they represented potential breeding sites for 2 rare amphibians, the gopher frog, Rana capito aesopus, and the striped newt, Notophthalmus perstriatus. Vegetation in the non-forested depression ponds was analyzed in order to determine if a set of characteristic species was present in each. These date then could be used to identify breeding sites for the two species and to provide information for use in the development of management plans for the sites. The study ponds generally fill during winter rains and completely dry down during the summer, but, during the period of this research, Florida was experiencing a relatively dry period, and some ponds did not fill on an annual basis. A total of 112 vascular plant species were identified in the pond basins. Panicum hemitomon was the only species present at each pond. Other common species included Andropogon glomeratus, Rhexia mariana var. mariana, Eupatorium leptophyllum, Rhynchospora spp., Ilax glabra, Cephalanthus occidentalis, and members ofthe family Eriocaulaceae. Similarities between ponds generally resulted from similarities in hydrologic cycle, defined as the period of time since each had held water, and the proximity of ponds to each other. The vegetation of each pond reflected a pattern of zonation or banding commonly described for temporary ponds in other regions. Wetland index values calculated for each pond fit wetland designation criteria, including a basin that had not formed a pond for 7 years, Dry Pond. Species richness and diversity were highest in ponds that had recently dried down and lowest in flooded ponds and Dry Pond.
APA, Harvard, Vancouver, ISO, and other styles
19

Insan, Irsyaphiani, Endhay Kusnendar Kontara, and Raden Roro Sri Pudji Sinarni Dewi. "IMPROVED PRODUCTION OF TIGER SHRIMP (Penaeus monodon) THROUGH PROBIOTICS APPLICATION." Indonesian Aquaculture Journal 10, no. 2 (December 31, 2015): 131. http://dx.doi.org/10.15578/iaj.10.2.2015.131-136.

Full text
Abstract:
The study was carried out in Brebes District, the North coast of Java. Tiger shrimp farming in Indonesia, particularly in this area faced some problems which caused by improper pond preparation, disease, and low seed quality. Probiotic was applied in pond to solve this problem. The aim of this study was to evaluate the production of tiger shrimp in ponds with probiotic applications. Six experimental ponds (each measuring 0.5 ha) were selected of which three were probiotic ponds and three were controlled. Tiger shrimp postlarvae (PL-30) were stocked at density of four shrimps/m2. Tiger shrimps were reared for three months. Shrimps were fed by commercial pellet. In the first month, shrimp were fed about 7%-5% of the total biomass; in the second months, 3.5%-3% of the total biomass; and in the third month, 2.5%-2% of the total biomass. The treatments in this study were the application of probiotics with concentration of 3 mg/L that were given every five days and control (without probiotics). The results showed the rearing period was 92 ± 6 days in probiotic ponds and 76 ± 16 days in controlled pond. The shrimp in controlled pond should be harvest earlier caused by the high mortality. The average final weight was 16.2 ± 0.7 g in probiotic pond and 15.6 ± 1.9 g in controlled pond. The survival rate was 64.13 ± 12.63% in probiotic pond and 44.17 ± 14.15% in controlled pond. Production was 208 ± 46 kg/pond/cycle in probiotic pond and 123 ± 6 kg/pond/cycle in controlled pond. The result showed that probiotic plays an important role in maintaining water quality parameters and health management as well as increases the survival of shrimp.
APA, Harvard, Vancouver, ISO, and other styles
20

Hardi, Esti Handayani, Haris Retno Susmiyati, Rita Diana, Nurul Puspita Palupi, and Krishna Purnawan Candra. "Sosialisasi Budidaya Udang Dengan Model Smart Silvofishery Untuk Meningkatkan Kesejahteraan Masyarakat Di Kecamatan Muara Badak." ABDIKU: Jurnal Pengabdian Masyarakat Universitas Mulawarman 1, no. 2 (January 24, 2023): 32–37. http://dx.doi.org/10.32522/abdiku.v1i2.380.

Full text
Abstract:
Shrimp farming is one of the most important livelihoods practiced by the community in the villages of Muara Badak Ulu and Salo Palai, Muara Badak District, Kutai Kartanegara Regency, using traditional management. Disease problems, decreasing of water quality, and natural food are all factors that reduce shrimp yields and pond productivity. This outreach and mentoring activity were held in collaboration with the Indonesian Peat and Mangrove Restoration Agency, with the goal of improving community skills in pond management through the use of environmentally friendly smart silvofishery. This method makes use of the nutrient cycle in the pond, as well as plant extracts to prepare and manage the pond. This activity was carried out for four discussed meetings by delivering environmental management and safety pond management. It involved nearly 155 people from the village community, local government, BRGM, and students from Mulawarman University's Faculty of Fisheries and Marine Sciences, forestry, agriculture, and law. This activity began with the identification of pond problems, followed by workshops and the preparation of smart silvofishery subjects, socialization activities for the application of the 10 steps of smart silvofishery, trials on demonstration plot ponds, and concluded with the monitoring and evaluation of activity implementation. Experiments on pond demonstration plots revealed that polyculture management with smart silvofishery increased yields up to 35 kg/ha, up from 14 kg/ha previously, and fish farmer have a standard step to manage their pond.
APA, Harvard, Vancouver, ISO, and other styles
21

Yunus, Budiman, and Dan Basse Siang Parawansa. "MANAGEMENT OF SILVOFISHERY PONDS BASED ON PUBLIC KNOWLEDGE AND MOTIVATION IN COASTAL AREA OF PANGKEP REGENCY." International Journal of Research -GRANTHAALAYAH 8, no. 3 (May 24, 2020): 49–56. http://dx.doi.org/10.29121/granthaalayah.v8.i3.2020.126.

Full text
Abstract:
This study aims to analyze the management pattern of integrated mangrove ponds (silvofishery) as a form of creating an environmentally friendly ecosystem and the sustainable use of its resources. The study was conducted through direct observation of three silvofishery patterns that were developed based on the level of knowledge and motivation of the farm-pond community in the coastal area of archipelago Pangkajene District, Pangkep Regency. The research variables consist of 3 integrated management patterns, namely: 1) embankment path pattern, 2) trench path pattern, and 3) complangan pond pattern. These three patterns want to know their contribution to the production of Chanos chanos biomass, Penaeid shrimp, and Scylla sp., as a natural biodiversity and as indicator of environmentally friendly and sustainable ecosystems. Knowledge and motivation data on environmental management (silvofishery) are analyzed based on Structural Equation Modeling (SEM). Whereas the production of 3 silvofishery patterns were analyzed by Anova by SRD (0.05) test. The results showed knowledge and motivation contribute positively to the management of integrated silvofishery patterns. Furthermore, these three patterns of silvofishery contribute positively in maintaining pond production (milkfish, shrimp and crab), where the silvofishery pond pattern gives a greater influence value, and supports the realization of sustainable management of integrated ecosystems of mangroves and ponds.
APA, Harvard, Vancouver, ISO, and other styles
22

Taslihan, Arief, Richard Callinan, Jenny-Ann Torribio, Bambang Sumiarto, and Kamiso Handoyo Nitimulyo. "CLUSTER MODEL FOR EXTENSIVE GIANT TIGER SHRIMP (Penaeus monodon Fab.) TO PREVENT TRANSMISSION OF WHITE SPOT SYNDROME VIRUS." Indonesian Aquaculture Journal 10, no. 1 (June 30, 2015): 65. http://dx.doi.org/10.15578/iaj.10.1.2015.65-70.

Full text
Abstract:
White spot syndrome virus (WSSV) has become epidemic in Indonesia and affecting shrimp aquaculture interm of its production. White spot syndrome virus is transmitted from one to other ponds, through crustacean, included planktonic copepode as carrier for WSSV and through water from affected shrimp pond. A cluster model, consist of shrimp grow out ponds surrounded by non-shrimp pond as a role of biosecurity has been developed. The model aimed to prevent white spot virus transmission in extensive giant tiger shrimp pond. The study was conducted in two sites at Demak District, Central Java Province. As the treatment, a cluster consist of three shrimp ponds in site I, and two shrimp ponds in site II, each was surrounded by buffer ponds rearing only finfish. As the control, five extensive shrimp grow out ponds in site I and three shrimp grow out ponds in site II, with shrimp pond has neither applied biosecurity nor surrounded by non-shrimp pond as biosecurity as well considered as control ponds. The results found that treatment of cluster shrimp ponds surrounded by non-shrimp ponds could hold shrimp at duration of culture in the grow out pond (DOC) 105.6±4.5 days significantly much longer than that of control that harvested at 60.9±16.0 days due to WSSV outbreak. Survival rate in trial ponds was 77.6±3.6%, significantly higher than that of control at 22.6±15.8%. Shrimp production in treatment ponds has total production of 425.1±146.6 kg/ha significantly higher than that of control that could only produced 54.5±47.6 kg/ha. Implementation of Better Management Practices (BMP) by arranging shrimp ponds in cluster and surrounding by non-shrimp ponds proven effectively prevent WSSV transmission from traditional shrimp ponds in surrounding area.
APA, Harvard, Vancouver, ISO, and other styles
23

Dumbre, Akshay, and Prathamesh Bhoir. "Multi-Channel Stormwater Ponds: A Sustainable Approach to Urban Flood Resilience." International Journal for Research in Applied Science and Engineering Technology 12, no. 9 (September 30, 2024): 187–90. http://dx.doi.org/10.22214/ijraset.2024.64146.

Full text
Abstract:
Flood-prone cities depend on stormwater ponds, but current designs with single, shallow channels limit storage. This paper proposes a new approach: using multiple channels to create smaller sections on the pond floor. Modeling shows this significantly increases storage for floods without needing a bigger pond. It also improves water flow and reduces stagnant areas. Finally, the paper explores practicalities for building these ponds, making them a valuable tool for better urban water management without needing more land or changing the pond’s height. These multi-channel ponds are particularly beneficial for frequent smaller storms by distributing water flow, reducing its speed, and allowing more time for sediment to settle, leading to improved water quality. Sustainable solutions are essential for safeguarding the future. In this research, sustainability plays a pivotal role, as the multi-channel stormwater pond design provides an innovative approach to improving flood management without the need for extra land or resources, thus supporting the goals of sustainable urban development.
APA, Harvard, Vancouver, ISO, and other styles
24

Zhang, Yantao, Jie Yang, Xiaoman Lin, Biao Tian, Tanglin Zhang, and Shaowen Ye. "Phytoplankton Community Dynamics in Ponds with Diverse Biomanipulation Approaches." Diversity 16, no. 2 (January 25, 2024): 75. http://dx.doi.org/10.3390/d16020075.

Full text
Abstract:
The rising challenge of eutrophication in aquatic systems globally necessitates an understanding of phytoplankton community dynamics under diverse biomanipulation approaches. This study, conducted from June 2022 to July 2023 in the Yuqiao Reservoir’s ponds in China, explored phytoplankton dynamics across ponds under different biomanipulation strategies. The study included a pond (BL) without fish stocking, a pond (CH) stocked with carnivorous and herbivorous fish, and another pond (CFD) incorporating a mix of carnivorous, filter-feeding, and detritus-feeding fish. Substantial seasonal variations in phytoplankton density and biomass were observed. In the BL pond, phytoplankton density ranged from 0.23 × 107 to 3.21 × 107 ind/L and biomass from 0.71 to 7.10 mg/L, with cyanobacteria predominantly in warmer seasons and a shift to cryptophytes and chrysophytes in winter. The CH pond exhibited a density range from 0.61 × 107 to 8.04 × 107 ind/L and biomass of 1.11 to 7.58 mg/L. Remarkably, the CFD pond demonstrated a significant reduction in both density (0.11 × 107 to 2.36 × 107 ind/L) and biomass (0.27 to 5.95 mg/L), indicating the effective implementation of its biomanipulation strategy. Key environmental factors including total nitrogen, water temperature, pH, chlorophyll-a, and total phosphorus played a significant role in shaping phytoplankton communities. The study highlights the importance of tailored biomanipulation strategies in aquatic ecosystem management, emphasizing long-term monitoring for sustainable management of eutrophication.
APA, Harvard, Vancouver, ISO, and other styles
25

Edgar Watt, W., and Jiri Maršálek. "Comprehensive Stormwater Pond Monitoring." Water Science and Technology 29, no. 1-2 (January 1, 1994): 337–45. http://dx.doi.org/10.2166/wst.1994.0681.

Full text
Abstract:
Stormwater management ponds are widely used to control urban stormwater pollution. An understanding of the relevant biological, chemical and physical processes in such ponds requires a comprehensive monitoring program. Such a program is described for a 0.52 ha pond near Kingston, Ontario. In addition to continuous measurement and discrete sampling of pond inflow, storage and outflow to define the overall mass balances of water, sediment and chemicals, the program includes special process-related surveys and investigations. These include analyses of bottom sediment cores, suspended sediment and submergent plants as well as modelling/measurement of the velocity field and sediment transport. This comprehensive monitoring program is presented as an example of what should be implemented in many climatic regions before transfer of data on pond performance can be justified.
APA, Harvard, Vancouver, ISO, and other styles
26

Dickes, Lori A., Jeffery Allen, Monika Jalowiecka, and Katie Buckley. "A Policy Lens of South Carolina Coastal Stormwater Management." Journal of South Carolina Water Resources, no. 3 (June 1, 2016): 31–41. http://dx.doi.org/10.34068/jscwr.03.04.

Full text
Abstract:
Similar to many environmental issues today, stormwater management lies within a network of regulatory and policy oversight. As South Carolina coastal communities continue to experience economic and population growth, understanding the broader policy context of stormwater pond management is important. This study was aimed at compiling the state-of-the-knowledge of stormwater pond management policy for the eight coastal counties of South Carolina. In order to enhance researchers and policymakers understanding of the stormwater policy and regulatory environment, this research utilizes a mixed methods approach. A mixed methods approach allows researchers to explore different components of a particular research question by deploying more than one methodological tool. This research employed three primary qualitative techniques: a policy instrument scan, a regional online survey and a local policy and economic focus group. Results indicate that while potentially strong policy exists at all levels (federal, state and local), there are identified gaps and stakeholder concerns around policy implementation and proper stormwater pond management at the local level. Additionally, with many stormwater ponds managed by Homeowners’ Associations (HOAs) there appears to be wide variation in their management and maintenance. Some of the recommendations identified in these results include: encouraging more Low Impact Development (LID) practices both for new development and re-development, improved communication on and best practices in pond maintenance, research and development of alternative pond management methods, more effective communication from South Carolina Department of Health and Environmental Control (DHEC) related to design criteria, effective maintenance and training opportunities for engineers preparing stormwater plans, and improved education for developers and HOAs. This document provides a framework to help lay the foundation for future stormwater pond policy studies that can assist policy makers, managers, stakeholders and other decision makers to more fully understand issues impacting water resource management in South Carolina.
APA, Harvard, Vancouver, ISO, and other styles
27

Hudson, N., K. Casey, S. Melvin, and P. Nicholas. "Laboratory investigation of supported permeable organic covers for the management of odour emissions from anaerobic piggery waste ponds." Water Science and Technology 44, no. 9 (November 1, 2001): 317–26. http://dx.doi.org/10.2166/wst.2001.0563.

Full text
Abstract:
Australian research has linked much of the odour arising from intensive livestock operations to pond treatment systems. A reduction in emissions from treatment ponds would therefore generally reduce odour emissions from intensive livestock operations. Published data indicates that the application of straw and other biological materials to effluent pond surfaces as a continuous cover reduces odour emissions. The effectiveness of these covers has not, however, been researched under controlled conditions. Using locally available materials, the efficacy of supported covers has been investigated using a series of laboratory anaerobic digesters treating typical piggery effluent. Research to date has focused on:•identifying effective cover and cover support materials;•quantifying odour reduction;•• identifying the impact use these covers may have on greenhouse gas emissions;•• devising practical and effective methods for constructing these covers.Results have confirmed that a variety of cover materials are effective in reducing pond odour emissions. Supporting the pond cover appears to extend the cover life expectancy. While greenhouse gas emissions appear to vary according to cover type, the overall significance of these emissions is not yet clear. The impact of permeable pond covers on overall pond performance requires additional research.
APA, Harvard, Vancouver, ISO, and other styles
28

Firdaus, Mustika, Sulistiono, and Bambang Widigdo. "Brackishwater pond development: present status and problems in the Padang Pariaman Regency of West Sumatera, Indonesia." E3S Web of Conferences 322 (2021): 05009. http://dx.doi.org/10.1051/e3sconf/202132205009.

Full text
Abstract:
Padang Pariaman Regency is one of the coastal regencies in West Sumatra which brackish aquaculture have been developed recently, especially shrimp pond aquaculture. This study was conducted to convey the pond's general condition, including the current status and the problems in aquaculture development. The method used was a desk study through the description of the status and the problems. Based on the study, the development of shrimp ponds increased quickly (63.77 ha) until 2019, which the largest number of ponds was in Batang Anai District, and spreading over 35 points. The production of that shrimp ponds in Padang Pariaman Regency reached 1,500 tons or Rp. 135 million (in 2017), which is marketed locally and outside Padang Pariaman. Problems that arose along with shrimp pond activities are 1. Shrimp pond construction is built very close to coastal areas 2. Shrimp pond activities do not have a business license, 3. Poor waste management of shrimp culture, 4. It is low involvement of the local community as technicians at the shrimp ponds, 5. Business license arrangement is done through third parties, and 6. It is an incompatibility between the area of ponds in the license and the real size of the ponds.
APA, Harvard, Vancouver, ISO, and other styles
29

Mohid, Mahin, Mohammad Azmal Hossain Bhuiyan Bhuiyan, Md Symoon Haque Saykot, Mohaimina Nahin, and Moniruzzaman Khondker. "A Comparative Study of Phytoplankton Communities and Eutrophication Status in Two Urban Ponds Within Dhaka Metropolis." Dhaka University Journal of Biological Sciences 33, no. 2 (September 1, 2024): 15–26. http://dx.doi.org/10.3329/dujbs.v33i2.75813.

Full text
Abstract:
Changes in physicochemical water quality and plankton biomass over time can clearly indicate the eutrophication status of a water body. Urban ponds are particularly susceptible to cultural and natural eutrophication, making it essential to study their water quality and phytoplankton biomass. This study examined two urban ponds within the University of Dhaka campus: Shahidullah Hall Pond (SH-pond) and Museum Pond (Mu-pond). Common phytoplankton in both ponds included species like Pediastrum simplex, Melosira granulata var. angustata, Synedra nana, Ceratium sp., and Ceratium furcoides, along with zooplankton such as Brachionus sp., Keratella cochlearis, and copepod nauplii. The higher diversity of zooplankton compared to phytoplankton suggests that zooplankton overgrazing has reduced phytoplankton species composition. The study’s results indicate a clear trend of eutrophication in both ponds. Over three decades, SH-pond showed increases in water temperature (4.5°C), alkalinity (0.32 meq/L), dissolved oxygen (6.84 mg/L), soluble reactive phosphorus (21.35 μg/L), nitrate (137.77 μg/L), and chlorophyll-a (23.76 μg/L), with water transparency decreasing by 67 cm. Eutrophication indicators like dissolved oxygen, nitrogen, phosphorus, and phytoplankton biomass (chlorophyll-a) increased by 1.9, 1.82, 2.23, and 2.21 times, respectively, suggesting significant eutrophication in Sh-pond. In contrast, over 26 years, Mu-pond data showed decreases in water temperature (2.66°C), pH (0.18), conductivity (31 μS/cm), silica (12.17 mg/L), and chlorophyll-a (12.4 μg/L), but increases in dissolved oxygen (7.61 mg/L), soluble reactive phosphorus (1.16 μg/L), and nitrate nitrogen (170.75 μg/L). This suggests a slower rate of eutrophication in Mu-pond. Human intervention is a critical factor influencing eutrophication in urban ponds, highlighting the need for effective management systems. Dhaka Univ. J. Biol. Sci. 33(2): 15-26, 2024 (July)
APA, Harvard, Vancouver, ISO, and other styles
30

Das, David Rintu, Mahmudul Hasan Mithun Mithun, Md Moniruzzaman, Maliha Khanum, and Yahia Mahmud. "Nursing and management of early produced larvae of Thai pangas (Pangasianodon hypophthalmus) using greenhouse concept." Archives of Agriculture and Environmental Science 8, no. 1 (March 25, 2023): 28–34. http://dx.doi.org/10.26832/24566632.2023.080105.

Full text
Abstract:
This experiment was conducted for the development of nursing techniques of early produced larvae of Thai pangus (Pangasianodon hypophthalmus) using Greenhouse concept for a period of 40 days from 10th February to 20th March 2020. The experiment was designed into two treatments (i) Greenhouse pond (GP) and (ii) Control or open ponds (CP) having three replicates each. Greenhouse concept was used for increasing the temperature during the winter month for proper growth and survival of the spawn. For this purpose, three ponds were covered with transparent polyethylene sheet fastened into bamboo frame and three ponds with no such covering. All the nursery ponds were stocked at a density of 20 g hatchling/decimal with 3 days old P. hypophthalmus. After 40 days of nursing period, the highest mean final length, weight gain and survival rate of fry were found to be 9.75 cm, 12.44g and 73.19% in greenhouse pond where in Control ponds it was 6.39 cm, 7.22g and 58.08%, respectively. A significantly higher (p<0.05) mean gross production of 6.07 kg/ decimal was found in greenhouse pond where in Control ponds it was 2.80 kg/ decimal in 40 days of nursing period. Water quality parameters were found to be better with good primary production in the green house ponds due to retaining day light temperature by polyethylene sheet. Results from the present experiment indicated that greenhouse technique can be suitable for the nursing and management of early produced larvae of Thai pangas with proper growth and good survival rate.
APA, Harvard, Vancouver, ISO, and other styles
31

Mushtaq, Shahbaz, Shahbaz Khan, and Mohsin Hafeez. "Evaluating the impact of ponds in sustaining crop production: a case of Zhanghe irrigation system in China." Water Policy 11, no. 2 (April 1, 2009): 236–49. http://dx.doi.org/10.2166/wp.2009.019.

Full text
Abstract:
Ponds are small reservoirs located in irrigated areas that allow farmers to capture rainfall, store surplus water from irrigation canals and conserve water from other sources. These ponds allow the users to obtain water on-demand providing built-in flexibility by storing water close to water users. Though ponds have been used widely in irrigated areas for many years, a recent increase in the construction of ponds because of growing water shortages and government policies are placing greater need on understanding their role in sustaining crop production. We evaluated the impact of ponds in sustaining agricultural production, specifically the impact of ponds on cost of irrigation, crop area and production. Multivariate regression models were developed to assess the impact of ponds. The results of an assessment of the impact of access to pond water indicated that it reduces the total cost of irrigation. However, the effect is not statistically significant, whereas access to pond water had some positive but non significant impact on rice area and yield. The results did not show any significant increase in yield and rice area because of the similar quality of ponds and the ZIS canal water; the ZIS contributes around 20% to pond water. However, comparing yield using pond water and rainfed agriculture may show a significant impact of pond water. We envision that ponds will continue to play vital roles in sustaining agricultural production.
APA, Harvard, Vancouver, ISO, and other styles
32

Morales, Kayla, and Claire Oswald. "Water age in stormwater management ponds and stormwater management pond‐treated catchments." Hydrological Processes 34, no. 8 (February 13, 2020): 1854–67. http://dx.doi.org/10.1002/hyp.13697.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Wu, Xiaoyun. "Image Extraction of Tailings Pond Guided by Artificial Intelligence Support Vector Machine." Wireless Communications and Mobile Computing 2022 (September 22, 2022): 1–11. http://dx.doi.org/10.1155/2022/9406930.

Full text
Abstract:
The large number of tailings ponds in my country, coupled with various man-made and natural factors in recent years, leads to the frequent occurrence of tailings pond accidents, causing serious harm. Mastering the number and distribution of tailings ponds is of great significance to prevent tailings pond accidents and carry out emergency management of tailings ponds. For the identification and monitoring of tailings ponds, the traditional survey methods are mainly based on ground surveys, and it is difficult to achieve large-scale and high-frequency detection. With the development of artificial intelligence technology, based on the support vector machine (SVM) method, the automatic extraction of remote sensing image (RSI) information has been realized, and remarkable achievements have been made in the field of remote sensing. This paper takes the tailings pond as the research goal, and based on the analysis of the characteristics of the tailings pond in the RSI, the method of SVM target detection is used to realize the rapid and high-precision identification of the tailings pond. The main contents of this paper are as follows: (1) The accident risk of tailings ponds at home and abroad and the status quo of tailings pond monitoring technology are introduced. (2) The relevant theory of SVM is learned, and the kernel function and corresponding parameter selection method of SVM are discussed in a multiclassification problem. (3) On the basis of determining the kernel function, parameters, and features, the trained model is compared with the original model. The results show that the SVM detection model proposed in this paper has excellent performance in tailings pond image recognition.
APA, Harvard, Vancouver, ISO, and other styles
34

Sri Rahayu, Yekti, Muslimatul Mufida, and Sunyoto. "Management of Fish Pond Water Waste with Aquaponics Technology at Paguyuban Budiarta 7, Bululawang District, Malang Regency." Soeropati: Journal of Community Service 6, no. 1 (November 30, 2023): 57–70. http://dx.doi.org/10.35891/js.v6i1.4366.

Full text
Abstract:
This service aims to provide solutions in the form of applying aquaponic technology to handle fish pond water waste. Aquaponic technology has the advantage of filtering wastewater to be channeled into vegetable growing media. The implementation method applied is training and assistance in aquaponic installation in the fish ponds of members of Paguyuban Budiarta 7. Aquaponic installation is in the form of installing pipes and water pumps from the fish pond to the vegetable growing media through filter and nutrient reservoirs. The results achieved are the installation of aquaponic systems in fish ponds can reduce the inundation of fish pond water waste, because the pond water is not directly discharged in the fish farming area, but channeled to the vegetable planting media, after being filtered in a water tank filled with charcoal. The results of observations of partner members show that around 90% of association members stated that this community service program provides benefits to increase knowledge and skills in diversifying fish and vegetable products through the aquaponics system. The sustainability of the program is highly expected to train members' expertise in producing energy sources through the use of solar cells, so that the use of electricity to support aquaponic installations can be more efficient and economical.
APA, Harvard, Vancouver, ISO, and other styles
35

Hariyono. "ANALISIS USAHA INTEGRASI ANTARA JASA RMU, PETERNAKAN DAN PERIKANAN DI DESA SIDORAHAYU KECAMATAN BELITANG KABUPATEN OKU TIMUR." Jurnal Bakti Agribisnis 6, no. 01 (April 1, 2020): 14–21. http://dx.doi.org/10.53488/jba.v6i01.84.

Full text
Abstract:
The objectives of this study were to: 1) determine the integration business management between RMU services, duck livestock and catfish pond fisheries in Sidorahayu Village, Belitang District, Oku Timur Regency, 2) determine the amount of income received in the integration effort between RMU services, duck livestock and fisheries catfish ponds in Sidorahayu Village, Belitang District, Oku Timur Regency, 3) knowing how the community's perceptions and responses are regarding the integration effort between RMU services, ducks and catfish pond fisheries in Sidorahayu Village, Belitang District, East Oku Regency. The results showed that: 1) Management in the integration effort between RMU services, duck livestock and catfish pond fisheries in Sidorahayu Village, Belitang District, East OKU Regency in the procurement of inputs, namely by fulfilling the production facilities from local villages, then for cultivation it is carried out by the integration method or by how to combine more than one type of farming business in the same land, namely RMU services, ducks by generating two incomes, namely the production of eggs and broiler ducks, and catfish pond fisheries where the existence of the pond is used as a place for broiler duck ponds, 2) Efforts to integrate between RMU services, duck livestock and catfish pond fisheries in Sidorahayu Village earn an income of IDR 9,933,999,793.43 / year, 3) The perception of the Sidorahayu community towards integration efforts between RMU services, duck livestock and catfish pond fisheries is very agreeable (SS) with a percentage of 97 , 5% so that the business is feasible to be developed in Sidorahayu Village, Kecamata n Belitang, East OKU Regency.
APA, Harvard, Vancouver, ISO, and other styles
36

Hartati, Hartati, Ahmad Muhlis Nuryadi, and Sitti Rosmalah. "The Ratio of Added Value to Marginal Land Use of Embankments in Wisata Agribisnis." Buletin Penelitian Sosial Ekonomi Pertanian Fakultas Pertanian Universitas Haluoleo 22, no. 2 (January 28, 2020): 82. http://dx.doi.org/10.37149/bpsosek.v22i2.14241.

Full text
Abstract:
The main activity of pond land in Wisata Agribisnis is the cultivation of milkfish. However, to maximize the use of pond land, pond farmers plant dragon fruit plants to add value to land management. The aim of this research is to analyze the value-added ratio on marginal land. This research method is a case study of marginal land use in agribusiness tourism, with qualitative and quantitative data. Quantitative data are analyzed with income analysis and value-added analysis. Qualitative data describe the marginal land use of embankments. The research results of dragon fruit planting in the marginal areas of pond embankments showed: 1) dragon fruit plants do not pollute pond water, this is because the structure of dragon fruit plants is similar to cactus plants, 2) full sunlight in ponds is very suitable for dragon fruit plants, 3) plants dragon fruit is very tolerant of brackish water, 4) the taste of dragon fruit remains sweet in root conditions close to brackish water, 5) dragon fruit plants continue to bear fruit even though planted in marginal land at the embankments of the pond. The results of the research on marginal land use of pond embankments by planting dragon fruit plants added value of Rp. 17,302,857, with a ratio of 85%. Pond farmers can take advantage of the marginal land of their ponds by planting dragon fruit plants.
APA, Harvard, Vancouver, ISO, and other styles
37

Febrianty, Irma. "Serapan Tenaga Kerja Pada Budidaya Ikan Patin dalam Kolam di Kabupaten Banjar, Kalimantan Selatan." Journal of Economic, Bussines and Accounting (COSTING) 4, no. 1 (September 7, 2020): 103–8. http://dx.doi.org/10.31539/costing.v4i1.1209.

Full text
Abstract:
The difference in pond area owned by catfish cultivators will result in differences in pond management so that the wider the pond, the more manpower needed and the worker specifications required by the cultivators. The purpose of this research is to see the labor absorption in catfish culture in ponds, as well as the labor value according to the specifications of the type of work required. The data analysis method uses descriptive analysis for the amount of labor absorbed and Oppurtunity cost, namely what benefits the workforce gets in working in catfish farming. Labor absorption in catfish farming in ponds for large scale businesses requires permanent labor to maintain the pond. as many as 4 people and harvest labor also requires as many as 8 - 9 people. Medium-scale businesses require 1-3 permanent workers and 5-7 panensian workers, while small scale businesses do not require permanent workers to maintain the pond because they are guarded by themselves and require 5-6 harvest workers. The value of the labor resources absorbed in catfish culture in the pond is Rp. 436,608,000.00. Keywords: Labor, Cultivation, Catfish.
APA, Harvard, Vancouver, ISO, and other styles
38

Tian, Peng, Yongchao Liu, Jialin Li, Ruiliang Pu, Luodan Cao, Haitao Zhang, Shunyi Ai, and Yunze Yang. "Mapping Coastal Aquaculture Ponds of China Using Sentinel SAR Images in 2020 and Google Earth Engine." Remote Sensing 14, no. 21 (October 26, 2022): 5372. http://dx.doi.org/10.3390/rs14215372.

Full text
Abstract:
Aquaculture has enormous potential for ensuring global food security and has experienced rapid growth globally. Thus, the accurate monitoring and mapping of coastal aquaculture ponds is necessary for the sustainable development and efficient management of the aquaculture industry. Here, we developed a map of coastal aquaculture ponds in China using Google Earth Engine (GEE) and the ArcGIS platform, Sentinel-1 SAR image data for 2020, the Sentinel-1 Dual-Polarized Water Index (SDWI), and water frequency obtained by identifying the special object features of aquaculture ponds and postprocessing interpretation. Our map had an overall accuracy of 93%, and we found that the coastal aquaculture pond area in China reached 6937 km2 in 2020. The aquaculture pond area was highest in Shandong, Guangdong, and Jiangsu Provinces, and at the city level, Dongying, Binzhou, Tangshan, and Dalian had the most aquaculture pond area. Aquaculture ponds had spatial heterogeneity; the aquaculture pond area in north China was larger than in south China and seaside areas had more pond area than inland regions. In addition, aquaculture ponds were concentrated near river estuaries, coastal plains, and gulfs, and were most dense in the Huang-Huai-Hai Plain and Pearl River Delta. We showed that GEE cloud processing and ArcGIS local processing could facilitate the classification of coastal aquaculture ponds, which can be used to inform and improve decision-making for the spatial optimization and intelligent monitoring of coastal aquaculture, with certain potential for spatial migration.
APA, Harvard, Vancouver, ISO, and other styles
39

Gu, Bihan, Feipeng Li, Yanru Liu, Lingchen Mao, and Hong Tao. "Effect of Vegetable Growth on Content and Composition of Antibiotics in Litopenaeus vannamei Pond Sediments in Crop/Aquacultural Rotation Process." Sustainability 13, no. 15 (July 28, 2021): 8400. http://dx.doi.org/10.3390/su13158400.

Full text
Abstract:
Photodegradation remains the major pathway of antibiotic removal in natural ponds. This study introduced a new method of growing vegetables on the bottom substrate of shrimp ponds to improve sediment quality. The aim of the study was to investigate the effect of vegetable planting on the photodegradation of antibiotics. This study characterized antibiotic levels in the pond sediment during this phytoremediation process and investigated the antibiotic content and composition of the sediment with and without crop rotation (traditional control), as well as the shrimp yields. The results showed that total antibiotics (e.g., trimethoprim, oxytetracycline, and norfloxacin) in the sediment of all aquaculture ponds continuously decreased from 44.78 ± 4.07 μg/kg to 18.80 ± 2.26 μg/kg in the crop rotation pond. The total amount of antibiotics consistently decreased in all ponds, and the rate of decline did not greatly differ. However, oxytetracycline in the crop rotation pond decreased faster than in the control pond, presumably because the growing vegetables altered the sediment and microbial-community characteristics that promoted oxytetracycline degradation. In the following year, there was little difference in the levels of norfloxacin or oxytetracycline between the two ponds. An increase in trimethoprim in the control pond was much higher than in the crop-growing sediment. It was indicated that the system remediated the shrimp pond ecosystem as well as providing the possibility of increasing profits by planting vegetables in the winter idle period of shrimp ponds.
APA, Harvard, Vancouver, ISO, and other styles
40

Liu, Ya Yun, Ying Yi Liu, Li Bing Mo, Chu Shan Zeng, Ming Long Yang, Yuan Hao Li, and Chun Mei Zhong. "Characteristics of Temporal and Spatial Distribution of Water Quality in the Ponds of Lv-Tang-River National Urban Wetland Park, China." Applied Mechanics and Materials 641-642 (September 2014): 141–44. http://dx.doi.org/10.4028/www.scientific.net/amm.641-642.141.

Full text
Abstract:
Based on the data collected in January, March,July and October in 2013, the characteristics of water quality in temporally and spatially in the ponds of Lv-Tang-River national urban wetland park were investigated. The results show that the main pollutants of Lv-Tang-River wetland are chemical oxygen demand, total nitrogen and ammonia nitrogen. Their average concentrations are worse than the national quality standards for Class V. The characteristics of water quality in spatially are significantly correlated with the plant configuration in the wetland. The water quality in reed pond is the best. Secondly is in natural pond. The worst is in lotus pond. The average of single parameter pollution index (Sj) of reed pond, natural pond and lotus pond is 1.72, 1.82 and 1.96. The water quality in the three ponds belongs to light pollution area. The water quality in July and October is better than that in January and March. In July and October, the water quality belongs to light pollution area and Sj is 1.12 and 1.35 respectively. In January and March, the water quality belongs to moderate pollution area and Sj is 2.17 and 2.71, respectively. In order to improve the water quality in Lv-Tang-River national urban wetland park and protect the ecological environment of Zhanjiang city, the valid measure is to strengthen the management of artificial ponds in winter and spring.
APA, Harvard, Vancouver, ISO, and other styles
41

Rabbani, Md Golam, Syed Hafizur Rahman, and Sirazoom Munira. "Prospects of pond ecosystems as resource base towards community based adaptation (CBA) to climate change in coastal region of Bangladesh." Journal of Water and Climate Change 9, no. 1 (October 3, 2017): 223–38. http://dx.doi.org/10.2166/wcc.2017.047.

Full text
Abstract:
Abstract Climate-induced hazards are adversely affecting the pond ecosystems in Bangladesh. Most of the poor communities collect water from isolated ponds for drinking and other domestic needs. This paper explores how the small pond ecosystems and associated livelihoods of the coastal communities are vulnerable and argues that the pond ecosystem can be a potential resource base for community based adaptation in the coastal regions of Bangladesh. A set of quantitative and qualitative tools were applied to 309 households across five villages. The study showed that 96% of the respondents are dependent on pond water for drinking. More than 50% households expressed that temperature, rainfall variations and salinity intrusion, directly and indirectly, affect the pond water. Physical parameter values of temperature, pH and salinity from the ponds showed changes across different seasons. Drinking water scarcity during pre-monsoon (March–May), winter (Dec–Feb), disaster and immediate post-disaster period among the communities is high. Salinity intrusion and surface runoff caused by excessive rainfall in short periods also cause deterioration in the quality of pond water. However, successful examples of pond water usage emerged through the discussions, especially during a post-disaster crisis, which strengthens the idea that ponds could be a resource base for community-based adaptation in the coast of Bangladesh.
APA, Harvard, Vancouver, ISO, and other styles
42

Haukos, David, Stephanie Martinez, and Jeannie Heltzel. "Characteristics of Ponds Used by Breeding Mottled Ducks on the Chenier Plain of the Texas Gulf Coast." Journal of Fish and Wildlife Management 1, no. 2 (November 1, 2010): 93–101. http://dx.doi.org/10.3996/032010-jfwm-005.

Full text
Abstract:
Abstract Mottled ducks Anas fulvigula are nonmigratory and primarily depend on habitats associated with coastal marshes of the Gulf Coast for their entire life cycle. Much of remaining available coastal marsh habitats of the Texas Gulf Coast are managed by state and federal agencies. The Texas Gulf Coast breeding population of mottled ducks has recently declined dramatically. To aid in development of management plans for breeding mottled ducks, we estimated the number of potential pair ponds available on the Texas Chenier Plain National Wildlife Refuge Complex relative to marsh type (fresh, intermediate, brackish, and saline), estimated occupancy, compared habitats of used and unused pair ponds, and evaluated pair pond selection relative to marsh type during spring 2004 and 2005. Greater than 18,000 ponds were recorded in &gt;22,400 ha of coastal marsh with &gt;74% of potential pair ponds in the intermediate marsh type. Average pond size of 425 randomly selected ponds across marsh types was 0.09 ha. Pond occupancy was estimated as 1.3% and 2.5% in 2004 and 2005, respectively, in 634 ponds surveyed for presence of mottled duck pairs. Mottled ducks selected for ponds in fresh marsh with short surrounding vegetation associated with recent cattle grazing, but avoided recently (&lt;3 mo prior) burned areas. Pond area was greater with shallower water depth for used compared to unused ponds. The presence and coverage of submergent and emergent vegetation did not influence use of pair ponds by mottled ducks. Development of breeding habitat (pair ponds, nesting cover, brood habitat) in fresh marsh will benefit mottled ducks. Our results indicate development of breeding habitat on the Texas Gulf Coast, and vegetation management using cattle grazing timed for disturbance in fresh marsh during mid- to late winter and early spring will further attract breeding mottled ducks.
APA, Harvard, Vancouver, ISO, and other styles
43

Lu and, Huanmin, and Andrew H. P. Swift. "El Paso Solar Pond." Journal of Solar Energy Engineering 123, no. 3 (January 1, 2001): 178. http://dx.doi.org/10.1115/1.1384572.

Full text
Abstract:
The El Paso Solar Pond, a research, development, and demonstration project operated by the University of Texas at El Paso, is a salinity-gradient solar pond with a surface area of 3,000 m2 and a depth of 3.2 m. The pond utilizes an aqueous solution of predominantly sodium chloride (NaCl). The surface convective zone, main gradient zone, and bottom convective zone are approximately 0.6 m, 1.4 m, and 1.2 m, respectively. The project, located on the property of Bruce Foods, Inc., was initiated in 1983 in cooperation with the U.S. Bureau of Reclamation. Since then, the El Paso Solar Pond has successfully developed a series of technologies for solar pond operation and maintenance, as well as demonstrated several different applications. In 1985, the El Paso Solar Pond became the first in the world to deliver industrial process heat to a commercial manufacturer; in 1986 became the first solar pond electric power generating facility in the United States; and in 1987 became the nation’s first experimental solar pond powered water desalting facility. Currently, the major research at El Paso Solar Pond is focused on desalination and brine management technologies. The long-term goal of this research is to develop a systems approach for desalination/brine management via a multiple process desalination coupled with solar ponds. This systems approach will reuse the brine concentrate rejected from desalting plants thereby negating the need for disposal (zero discharge), and provide additional pollution-free renewable energy for the desalting process.
APA, Harvard, Vancouver, ISO, and other styles
44

Rashid, Ibrahim, and Mahmudul Hasan Mithun. "Guidelines for Freshwater Pond Management in Bangladesh." Bangladesh Journal of Multidisciplinary Scientific Research 2, no. 2 (June 28, 2020): 1–9. http://dx.doi.org/10.46281/bjmsr.v2i2.645.

Full text
Abstract:
The pond aquaculture sector in Bangladesh expands rapidly. Total fish production from pond aquaculture increasing day by day. Bangladesh ranks fifth in aquaculture production and becomes fourth in the tilapia production in the world. Total fish production in Bangladesh was about 4.27 million MT in 2017-18 fiscal years and the pond aquaculture production was about 1.9 million MT which contributes about 44.43% of the total fisheries production in 2017-18. That means pond aquaculture contributes a lot in Bangladesh fisheries sectors. For getting proper outcome from the pond aquaculture some basic guidelines should be followed during pre-stocking, stocking, and post stocking management of freshwater pond. Firstly, pond should be prepared properly before stocking of fish seed like aquatic weeds and predators should be eradicated with properly constructed the pond bottom and dike and then liming and fertilization should be done for making a better culture environment for fish. Good quality fish seed should be sock to the pond and feeding should be done properly. Periodic sampling for examining the proper growth and any disease infestation occurs should be done. Liming and fertilization should be done after stocking of fish seed if needed. Harvesting and marketing of fish should be done by considering some factors to get good profit.
APA, Harvard, Vancouver, ISO, and other styles
45

Selvi, Kahraman, Seda Özdikmenli Tepeli, and Burcu Kaya. "Evaluation of seasonal changes in terms of irrigation water quality of Terzialan Pond (Çan, Çanakkale)." Ege Journal of Fisheries and Aquatic Sciences 38, no. 3 (September 15, 2021): 317–28. http://dx.doi.org/10.12714/egejfas.38.3.08.

Full text
Abstract:
Determining the water quality of agricultural irrigation ponds has great importance both for agricultural production and for aquatic organisms. In this study, seasonal changes of the physico-chemical parameters and metal concentrations of water in Terzialan Pond were investigated. In 2019, physico-chemical analysis of the water samples taken from four sampling points are made according to APHA (2012) standard method, determining metal concentrations with ICP-OES. The water quality of the pond is evaluated according to YSKYY, ITASHY and TS266 classes. Terzialan Pond, according to Surface Water Quality Management Regulations is found to be second quality in terms of phosphate concentration and first quality in other parameters. The pond can be used as agricultural irrigation water being in C2-S1 class according to US Salinity Laboratory diagram and very good- good class according to Wilcox diagram. Changes in water quality are observed due to anthropogenic effects depending on seasonal agricultural and recreational activities, besides natural effects. Periodic monitoring of the pond will be beneficial for environmental management.
APA, Harvard, Vancouver, ISO, and other styles
46

Banerjee, A., and G. N. Chattopadhyay. "Identification of soil properties influencing primary productivity of fish ponds under red and lateritic soil zones." Journal of Environmental Biology 45, no. 2 (March 23, 2024): 182–89. http://dx.doi.org/10.22438/jeb/45/2/mrn-5171.

Full text
Abstract:
Aim: The present study aimed to identify the key soil factors influencing the primary productivity of water in the fish ponds situated under low productive red and lateritic soil zones. Methodology: General properties of fish pond soils (n=42) from different red and lateritic soil zones of West Bengal, India were determined along with the gross primary productivity (GPP) values of corresponding pond waters. All the soil properties were correlated with GPP values and the soil factors which were significantly correlated with GPP of pond water were further used for step down regression analysis with regard to GPP.This helped to develop a minimum data set of the key soil factors which showed maximum influence on GPP. The efficiency of the regression equation, generated with the critical soil parameters, in predicting the GPP values of other ponds was also assessed through a study on the variations in calculated and on-farm GPP values of eight fish ponds. Results: Among all the studied soil properties, pH and availability of three major nutrients viz. N, P and K were observed to contribute 84.15% variations in gross production of primary fish food organisms in these pond environment. Of these 4 soil properties, again, pH and available P values of the pond soils appeared to be more important. A regression equation was also developed to predict the GPP of such pond water using soil pH and available P values only. This equation showed a precision range of 83.0 to 99.7% and was found to be statistically at par with the GPP values observed under actual pond condition. Interpretation: High efficiency in predictability of pond GPP values using the minimum data set of two key soil factors viz. soil pH and available P indicates that proper management of these productivity attributing soil properties will be particularly helpful to improve the primary productivity levels of the predominantly low yielding fish ponds under the red and lateritic soil zones. Key words: Fish ponds, Minimum data set, Productivity attributes, Red and lateritic soil zones, Soil factors
APA, Harvard, Vancouver, ISO, and other styles
47

Buchanan, Neil, Paul Young, Nancy J. Cromar, and Howard J. Fallowfield. "Comparison of the treatment performance of a high rate algal pond and a facultative waste stabilisation pond operating in rural South Australia." Water Science and Technology 78, no. 1 (May 2, 2018): 3–11. http://dx.doi.org/10.2166/wst.2018.201.

Full text
Abstract:
Abstract South Australian community wastewater management schemes (CWMS) treat wastewater using waste stabilisation ponds before disposal or reuse. This study compared the performance of a facultative pond, 6,300 m2, 27.5 d theoretical hydraulic retention time (THRT), with a high rate algal pond (HRAP) operated at depths of 0.32, 0.43 and 0.55 m with THRT equivalent to 4.5, 6.4 and 9.1 d respectively. Both ponds received influents of identical quality, differing only in quantity, and were operated in similar climatic conditions. The depth of HRAP operation had only a minor influence on treatment performance. The study showed that the quality of the treated effluent from the HRAP was equivalent to that of the facultative pond, 5-day biochemical oxygen demand removal &gt;89%, NH4-N removal 59.09–74.45%. Significantly, Escherichia coli log10 reduction values by the HRAP, 1.74–2.10, were equivalent to those of the facultative pond. Consequently, HRAPs could replace facultative ponds within CWMS while maintaining treated effluent quality. The benefit would be halving the surface area requirement from 4.2 m2 capita−1 for the facultative pond to between 2.0 and 2.3 m2 capita−1, depth dependent, for an HRAP, with significant attendant reductions in the capital costs for construction.
APA, Harvard, Vancouver, ISO, and other styles
48

Petrea, Ștefan-Mihai, Alina Mogodan, Isabelle Metaxa, Cătălin Platon, Mioara Costache, and Ira-Adeline Simionov. "THE TECHNOLOGICAL WATER NITROGEN COMPOUNDS DYNAMICS IN THE EXPERIMENTAL PONDS, INLET AND OUTLET CHANNELS." Present Environment and Sustainable Development 13, no. 2 (October 15, 2019): 259–77. http://dx.doi.org/10.15551/pesd2019132020.

Full text
Abstract:
This study aims to identify proper solutions that can improve the sustainability of cyprinids pond aquaculture in terms of nitrogen releases to the environment. Therefore, two experimental variants, based on polyculture, respectively integrated multi-trophic aquaculture (IMTA) concept were tested, as follows: PCP – polyculture of common carp (CC) + grass carp (GC) + bighead carp (BC) + silver carp (SC); CP-PP – net divided pond with CC monoculture in CP part and CC+GC+BC+SC polyculture in PP part. In order to determine the nitrogen accumulation at the pond level, samples of water, sediments, fish meat and reed were analyzed. The results indicate that the highest nitrogen compounds concentrations in pond water were registered at CP part of CP-PP pond. However, the nitrogen concentration in pond effluents was significant higher in case of CP-PP pond, compared with PCP pond. The nitrogen compounds concentration of sediments registered the highest values in the ponds outlet area. Also, CP-PP pond recorded higher nitrogen concentration in sediments, compared with PCP pond. The CC registered the highest nitrogen compounds concentration in case of PP pond area, followed by CP pond area and PCP pond. Not significant correlation was found between reed and pond water/ fish meat/ sediments in terms of nitrogen compounds concentration. It can be concluded that the CP-PP pond feeding management, together with the tested technical solution (pond dividing) generated better water conditioning performances.
APA, Harvard, Vancouver, ISO, and other styles
49

Faisal, Laode Muhammad, Ahmad Syarif Sukri, Uniadi Mangidi, and Ishak Bafadal. "Desain Kolam Retensi Tobuuha Dengan Aplikasi Storm Water Management Model (Swmm) Di Kelurahan Tobuuha Kecamatan Puuwatu Kota Kendari." Sultra Civil Engineering Journal 5, no. 1 (April 23, 2024): 254–67. http://dx.doi.org/10.54297/sciej.v5i1.594.

Full text
Abstract:
Tobuuha Village, Puuwatu District, Kendari City was previously a green open area which was naturally used for water absorption. However, this area has now changed its function to become a densely populated residential area, resulting in a significant reduction in water absorption. As a result, when it rains, surface flow becomes greater and causes puddles downstream. The aim of this research is to model the Tobuuha retention pond using the SWMM application for environmental changes that occur. Primary data collection was carried out by observing existing conditions and measuring the dimensions of channels and ponds around the retention pond. Meanwhile, secondary data was obtained from related agencies. The results of the research show that the flood discharge that will enter the retention pond is Q5 = 0.559 m3/second with the volume of water that enters and must be accommodated in the retention pond of 4577.0934 m3, while the existing capacity of the retention pond is 6978.44 m3, so it is considered still able to reduce flooding downstream of the pond. Therefore, the city government's plan to expand and increase the depth of the pool is not necessary because it will reduce the open space around the pool. Handling potential flooding and inundation around the location can be done by adjusting the sliding door openings and modifying several channels, namely channels J51-J52, M62-M63, N71-N106, and U97-U101. The SWMM simulation results for the proposed solution show that the retention pond is effective enough to prevent flooding in the surrounding area
APA, Harvard, Vancouver, ISO, and other styles
50

Sherly Dwi Novianti M, Rizana Fauzi, and Nurhani Amin. "Remote Water Quality Monitoring System In Shrimp Ponds With Photovoltaic (PV)-Based Energy Source." Tadulako Science and Technology Journal 4, no. 2 (July 23, 2024): 38–48. http://dx.doi.org/10.22487/sciencetech.v4i2.17320.

Full text
Abstract:
Introduction: Shrimp has great potential to be used as a business field in Indonesia. Especially in Parigi Regency itself, there are now many shrimp ponds that can be found because of the benefits obtained, so people are interested in making shrimp farming a livelihood. One of the main problems of shrimp ponds is pond water quality. There are several factors that affect pond water quality, namely water temperature, water pH, and water salinity, good pond water quality management can maintain quality standards and can increase shrimp yield and productivity Method: To facilitate the shrimp farmers, innovations need to be made in order to help the shrimp farmers manage their shrimp ponds, therefore using a remote water quality monitoring was system in shrimp ponds with photovoltaic (PV) based energy sources is expected to be an innovation in managing shrimp ponds, especially in monitoring water quality in shrimp ponds. The monitoring system designed using the NRF24L01 module as a remote communication module, at the research location the distance from the shrimp pond to the house is approximately 100 meters, so the tools that have been designed can facilitate shrimp farmers to monitor the shrimp pond Results and Disscussion: The results of testing the DS18B20 temperature sensor compared with a digital thermometer measuring instrument get an average error of 0.014%. The test results of the pH sensor compared to the pH meter get an average error of 0.026%. TDS sensor test results compared with the TDS meter get an average error of 0.04%. Conclusion: The temperature, pH, and salinity monitoring system uses transmitter and receiver modules, where the transmitter module reads and sends data to the receiver module wirelessly with NRF24L01. Using DS18B20 temperature, pH, and TDS sensors, as well as energy from photovoltaics, this system helps shrimp farmers monitor pond water quality remotely.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography