Effects of Three Sediment Improvement Methods on Water Quality and Sediment Nutrient Content of Tilapia Pond

2021 ◽  
Vol 08 (02) ◽  
pp. 84-94
Author(s):  
利军 武
Keyword(s):  
Water Quality ◽  
Nutrient Content

scholarly journals Retraction: Jelic-Mrcelic G, Sliskovic M. The evaluation of fish farming impact by nutrient content and chlorophyll a in Mala Lamljana bay. Arch biol sci. 2013;65(2):567-70. DOI: 10.2298/ABS1302567J

2015 ◽  
Vol 67 (4) ◽  
pp. 1437-1437
Author(s):  
E Editorial
Keyword(s):  
Biological Sciences ◽  
Water Quality ◽  
Chlorophyll A ◽  
Fish Farming ◽  
Nutrient Content ◽  
Fish Farm ◽  
Significant Part ◽  
Retracted Article ◽  
The Impact ◽  
Font Color

This is a notice of retraction of the article: The evaluation of fish farming impact by nutrient content and chlorophyll A in Mala Lamljana bay, published in the Archives of Biological Sciences in 2013, Vol. 65, Issue 3. The Editor-in-Chief has been informed that the data in this article has already been published in the following article: Jelic Mrcelic G, Sliskovic M. The impact of fish cages on water quality in one fish farm in Croatia. Int Sci Index. 2010;4(8):775-8. Inspection of these articles has revealed the following: a significant part of the data in the article published in the Archives of Biological Sciences was published without proper cross-referencing to the data already published in the earlier paper. This issue was discussed with one of the two authors and it was mutually agreed to retract the article. <br><br><font color="red"><b> Link to the retracted article <u><a href="http://dx.doi.org/10.2298/ABS1302567J">10.2298/ABS1302567J</a></b></u>

scholarly journals Effect of Silvofishery on Ponds Nutrient Levels (Pengaruh Silvofishery Terhadap Kandungan Nutrien di Tambak)

2014 ◽  
Vol 19 (2) ◽  
pp. 81 ◽  
Author(s):  
Anna Ida Sunaryo Purwiyatno ◽  
Fitri Agustriani
Keyword(s):  
Water Quality ◽  
National Parks ◽  
National Park ◽  
Sampling Method ◽  
Phosphorus Content ◽  
Nutrient Content ◽  
Pond Water ◽  
Quality Parameters ◽  
Mangrove Forests ◽  
Purposive Sampling

Taman Nasional Sembilang merupakan salah satu taman nasional yang terletak di Sumatera Selatan dan menjadi kawasan mangrove terbesar di barat Indonesia. Sebagian besar wilayah mangrovenya telah mengalami alih fungsi menjadi tambak pasang surut. Hal ini menyebabkan timbulnya kekhawatiran kerusakan mangrove di taman nasional. Salah satu upaya untuk mempertahankan wilayah mangrove adalah dengan melakukan sistem silvofishery, yaitu penanaman mangrove dan budidaya bandeng dilakukan secara bersamaan di tambak. Penelitian ini bertujuan untuk menganalisis kualitas air dan kondisi nutrien di tambak di daerah restorasi silvofishery di Taman Nasional Sembilang. Penelitian dilakukan dengan metode purposive sampling di tambak silvofishery, tambak non-silvofishery, dan badan air sungai di seluruh wilayah taman nasional. Pengukuran dilakukan terhadap parameter kualitas air dan kandungan nutrien khususnya nitrat dan fosfat. Hasil penelitian menunjukkan bahwa kehadiran tanaman mangrove di daerah tambak mampu memperbaiki kandungan oksigen dan pH air tambak. Mangrove juga menunjukkan kemampuan dalam mengikat nitrat yang secara tidak langsung akan mencegah air tambak dari polusi. Namun, kandungan fosfat tinggi menunjukkan bahwa tanaman mangrove muda di wilayah restorasi belum mampu mengikat nutrien ini secara signifikan. Hasil penelitian ini menunjukkan bahwa hutan mangrove sangat bermanfaat bagi kegiatan budidaya tambak karena kemampuannya dalam menyerap polutan nutrient. Kata kunci: silvofishery; kolam; nitrat; fosfat; Taman Nasional Sembilang Sembilang National Park is one of the national parks which is located in South Sumatera and became the largest mangrove area in western Indonesia. Most of the mangroves area in this national park has been experiencing conversion to be tidal ponds. This has resulted in concerns on mangrove forest destruction in the park. One of the efforts to maintain mangroves area is by applying silvofishery system, which is mangrove planting and cultivation of milkfish in ponds performed simultaneously. This study aims to investigate the water quality and nutrient condition in the ponds in the area of silvofishery restoration at Sembilang National Park. The study was conducted by purposive sampling method in the silvofishery ponds, non-silvofishery ponds, and river water bodies throughout the park. Measurements conducted on water quality parameters and nutrient content, especially nitrate and phosphate. The results showed that the presence of mangrove in the ponds area is able to improve the oxygen content and pH of pond water. Mangroves also demonstrated the ability to bind nitrates which indirectly will prevent the pond water from pollution. However, the high phosphorus content showed that young mangrove plants in the restoration area have not been able to significantly bind the of this nutrient. The results of this study showed that mangrove forests are very beneficial for aquaculture activities because of its ability to absorb nutrient pollutants. Keywords: silvofishery; ponds; nitrate; phosphate; Sembilang National Park

scholarly journals Development of Water Quality Control and Monitoring Systems for Hydroponic Plants Based on the Embedded Web

2021 ◽  
Vol 11 (8) ◽  
pp. 80-88
Author(s):  
Rony Baskoro Lukito ◽  
◽  
Cahya Lukito
Keyword(s):  
Water Quality ◽  
Web Application ◽  
Ph Value ◽  
Nutrient Content ◽  
Water Conductivity ◽  
Water Quality Control ◽  
Control Functions ◽  
Hardware System ◽  
Water Ph ◽  
Embedded Web

Hydroponics is a farming technology using water mixed with mineral nutrients which is continuously flowed to the roots of plants for 24 hours every day. The height of the water reserves, the water temperature, the nutrient content of the water and the pH of the water are some of the factors that need to be considered in planting crops using the hydroponic method. Regular observations and control functions of water quality are very important to ensure hydroponic plants can grow well. The function of controlling and observing water quality can be accomplished by developing a hardware system with an embedded Web equipped with a dosing-pump module to determine water quality based on the calculation of input data from the water quality sensor. With the embedded Web application, the control and observation functions can also be carried out remotely and periodically the hydroponic system can report the current state directly via the TCP/IP network. In this study, a second generation minimum system model will be developed which is the result of improvements from previous research. Water pH and water conductivity (EC) sensors can be activated simultaneously. The addition of a dosing-pump module is used to provide a liquid to adjust the pH value of water and plant nutrient fluids, while the addition of an embedded Web application to a Wi-Fi hardware module is to improve the ease of control and monitoring functions. Keywords—Embedded Web, Hydroponic water quality, Remote control and monitoring

Determination of some physicochemical parameteres and inorganic nutrient content of Gediz River (Manisa)

2015 ◽  
Vol 40 (3) ◽  
Author(s):  
Tuğba Şentürk ◽  
Şükran Yıldız
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Physicochemical Parameters ◽  
Nutrient Content ◽  
Nutrient Concentrations ◽  
Western Turkey ◽  
River Water Samples ◽  
Gediz River

AbstractObjective: This present investigation aimed at assessing the water quality of the Gediz River located in western Turkey.Methods: Some physicochemical parameters and nutrient concentrations of the surface water of Gediz River were determined over a period of twelve months (October to September 2012) at 5 sampling sites along the river.Results: Data on some ions namely NHConclusion: This indicates pollution of the river water samples from the areas studied. Our findings highlighted the deterioration of water quality of the river due to anthropogenic and agriculturel activities.

scholarly journals Assessment of the Trophic Status of the South Lagoon of Tunis (Tunisia, Mediterranean Sea): Geochemical and Statistical Approaches

2018 ◽  
Vol 2018 ◽  
pp. 1-17 ◽  
Author(s):  
Myriam Abidi ◽  
Rim Ben Amor ◽  
Moncef Gueddari
Keyword(s):  
Water Quality ◽  
Trophic Status ◽  
Nutrient Content ◽  
Water Quality Monitoring ◽  
Anthropogenic Factors ◽  
The South ◽  
Engineering Project ◽  
Multivariate Statistical ◽  
Status Assessment ◽  
High Level

The trophic status assessment of the South Lagoon of Tunis, a shallow Mediterranean coastal area after its restoration, is addressed herein with respect to its various environmental settings which are taken as indicators of water quality. The lagoon had, in the past, witnessed severe environmental quality issues. To resolve these problems, a large restoration project of the lagoon was undertaken which consisted of dredging the bottom sediments removing areas of water stagnation and improving water circulation. After this restoration work, the lagoon morphology has radically changed. In this paper, we attempt to evaluate the lagoon water’s trophic state to analyze the eutrophication risk after almost 16 years. In order to achieve these purposes, two water quality monitoring campaigns were conducted (July 2013 and February 2014). Natural and anthropogenic factors controlling the nutrient content of the lagoon water have been assessed through both geochemical methods and multivariate statistical tools. The results show that the nutrients are from external sources due to the discharge of municipal and industrial wastewater from the surrounding city of the catchment in the lagoon’s south side. According to the TRIX index, the lagoon remains eutrophic presenting a “poor” water quality, notwithstanding the engineering project due to the high level of nutrients.

Tissue nutrient content of Gracilaria spp. (Rhodophyta) and water quality along an estuarine gradient

1995 ◽  
Vol 46 (6) ◽  
pp. 975 ◽  
Author(s):  
JL Horrocks ◽  
GR Stewart ◽  
WC Dennison
Keyword(s):  
Water Quality ◽  
Water Column ◽  
Plant Tissue ◽  
Time Course ◽  
Inorganic Nitrogen ◽  
River Mouth ◽  
Nutrient Content ◽  
Moreton Bay ◽  
Tissue Nutrient Content ◽  
Tissue Nitrogen

Tissue nutrient content of Gracilaria spp. (Rhodophyta) was tested as a bioindicator of water column nutrient availability in the Logan River and southern Moreton Bay, south-eastem Queensland. Macroalgae were incubated for one to two weeks within flow-through incubation chambers suspended in the water column. Tissue nutrient content of Gracilaria spp, and water column nutrients were measured at five sites over a five-month period. Tissue nitrogen content (%N) was correlated with dissolved inorganic nitrogen (DIN) at a site 15 km upstream from the Logan River mouth (r² = 0.81), at the Logan River mouth (r² = 0.50), and at a Moreton Bay site 8 km from the Logan River mouth (r² = 0.71). Time-course analyses of water column nutrients and plant tissue content showed more significant correlations with nitrogen (N) than with phosphorus (P). Plant tissue nitrogen-to-phosphorus (N:P) molar ratios ranged between 19 and 23 whereas water column N:P ratios were between 2 and 6, suggesting low nitrogen availability relative to plant requirements and possible N limitation. In the laboratory, Gracilaria verrucosa was subjected to treatments of N, P or N + P nutrient additions. Deepening of the thallus colouration was observed after additions of N. Chlorophyll and phycoerythrin concentrations increased in treatments with N addition; however, owing to wide variability between phycoerythrin replicates, only chlorophyll increases were significant. The amino acid citrulline also increased with the addition of N and accounted for up to 16% of the total tissue N. Macroalgae may be more useful than traditional water quality sampling for integrating biologically available pulses of nutrients, especially for a limiting nutrient such as N in coastal marine ecosystems.

STATUS INDEKS PENCEMARAN PERAIRAN KAWASAN MANGROVE BERDASARKAN PENILAIAN FISIKA-KIMIA DI PESISIR KECAMATAN BREBES JAWA TENGAH

2017 ◽  
Vol 13 (2) ◽  
pp. 171 ◽  
Author(s):  
Wisnu Arya Gemilang ◽  
Gunardi Kusumah
Keyword(s):  
Water Quality ◽  
Good Condition ◽  
Pollution Index ◽  
Nutrient Content ◽  
Sea Levels ◽  
Quality Of Waters ◽  
Index Measurement ◽  
The Status ◽  
Rising Sea Levels ◽  
Value Measurement

Settlement growth and activity of the population in the Brebes Subdistrict upstream side is also predicted to trigger intrusion and rising sea levels that affect the flow and availability of fresh water needed for the survival of life mangrove vegetation, especially in the adult stage. Therefore, identification of the quality of waters in the mangrove areas is needed to determine the status of these waters pollution index. Measurement of physical and chemical parameters of waters in situ using a Water Quality Checker (DKK TOA WQC Type-24) and laboratory testing of some samples to determine the nutrient content of the water is also performed. Insitu value measurement results later are calculated by using a pollution index refers to the Decree of the State Minister of Environment Number 51 The year 2004 on Guidelines for Determination of Water Quality Status. Index of water pollution Brebes District mangrove area is divided into three criteria: pollution index good condition, lightly polluted and heavily polluted. The section near the front mangrove estuary and enter the index criteria lightly polluted.

scholarly journals Evaluation of Soil and Irrigation Water Quality in Caohai Lakeside Zone

2021 ◽  
Vol 13 (22) ◽  
pp. 12866
Author(s):  
Yi Tan ◽  
Quanquan Wei ◽  
Bangxi Zhang ◽  
Zijing Zheng ◽  
Jiulan Guo ◽  
...  
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Organic Matter ◽  
Soil Fertility ◽  
Irrigation Water ◽  
Metal Content ◽  
Nutrient Content ◽  
Heavy Metal Content ◽  
Current Status ◽  
Irrigation Water Quality

Due to the rapid population growth and over-application of fertilizers in the Caohai surrounding farmlands, controlling the non-point source pollution in the Caohai Lakeside Zone is significant for the local ecology balance and human health safety. A total of 54 soil and 24 irrigation water samples were collected in the Caohai Lakeside Zone to evaluate the current status of soil fertility and heavy metal pollution by measuring soil and water heavy metal content and soil physicochemical properties such as soil total nitrogen, total phosphorus, organic matter, and soil pH. These results showed that the total amounts of organic matter, nitrogen, phosphorus, potassium, and effective nutrient content in the Caohai Lakeside Zone were all at a rich level according to Chinese soil nutrient grade standard; the content of lead (Pb), chromium (Cr), cadmium (Cd), mercury (Hg), and arsenic (As) in the soil all exceeds the safety standard of Chinese classification of soil environmental quality assessment. In addition, the over-standard rates of Cd and Cr were 24.1% and 14.8%, respectively. On the whole, the comprehensive quality index (CQI) of the soil in the Caohai Lakeside Zone is 6.48, which is attributed to the heavy Cd pollution and the good soil fertility. The heavy metal content of the irrigation water met the requirements of irrigation water quality. It is feasible to use the irrigation water of Caohai Lake in the actual agricultural production process. Therefore, in terms of the comprehensive management and pollution control of Caohai, special attention should be paid to the control of Cd, Pb, As, and Hg pollution sources.

scholarly journals Influence of Reservoirs on the Concentration of Nutrients in the Water of Mountain Rivers

2016 ◽  
Vol 23 (3) ◽  
pp. 413-424 ◽  
Author(s):  
Małgorzata Kijowska-Strugała ◽  
Łukasz Wiejaczka ◽  
Rafał Kozłowski
Keyword(s):  
Water Quality ◽  
Nutrient Concentration ◽  
Hydrological Regime ◽  
Nutrient Content ◽  
Nutrient Concentrations ◽  
Mountain Rivers ◽  
Storage Reservoirs ◽  
Selection Of

Abstract The aim of the analysis was to demonstrate the role of reservoirs in shaping nutrient content (nitrates NO3- and phosphates PO43- as well as ammonia NH4+) in the waters of mountain rivers. Three Carpathian rivers with reservoirs in their courses were selected for the study: the Ropa River (Klimkowka reservoir), the Dunajec River (the Czorsztyn-Sromowce Wyzne reservoir complex) and the Raba River (Dobczyce reservoir). The basic criteria for the selection of the study objects for the investigation were: similar hydrological regime of the rivers and diverse parameters and functions of the storage reservoirs. The analysis of nutrient concentration was based on a long-term series of measurements (2004-2013). The reservoirs investigated generally contribute to an increase in nitrates in the rivers flowing below the reservoirs in particular months. The role of reservoirs in shaping phosphate and ammonia levels was not as evident as in the case of nitrates. The reservoirs are merely one of numerous factors that contribute to nutrient levels in the water of the mountains rivers. In the light of the analysis of nutrient concentrations in the surface water tested, it may be concluded that the reservoirs do not cause a clear and permanent deterioration of river water quality.

scholarly journals The Effect of Different Commercial Probiotics on the Diversity and Density of Sea Water Plankton in the Experiment Tub

2020 ◽  
Vol 9 (1) ◽  
pp. 21
Author(s):  
Mizar Desrialdi ◽  
Boedi Setya Rahardja ◽  
Endang Dewi Masithah
Keyword(s):  
Water Quality ◽  
Sea Water ◽  
Diversity Index ◽  
Critical Factor ◽  
Nutrient Content ◽  
Chlorella Sp ◽  
Randomized Design ◽  
Experimental Media ◽  
Index Value ◽  
Commercial Probiotics

The presence of plankton in pond ecosystems fluctuates. Phytoplankton needs nutrients to support their growth. The higher the nutrient content in the waters, the greater the abundance of phytoplankton. The increased abundance of phytoplankton will stimulate the growth of zooplankton. One of the causes of changes in ecosystems in waters is caused by water waste that comes from the rest of the feed and feces and in the form of ammonia or nitrite and nitrate. Water quality is a critical factor in the cultivation process. As a preventative measure, the decrease in water quality in waters is by giving probiotic bacteria. This study aims to obtain information about the effect of giving different commercial probiotics to the diversity and density of seawater plankton in the experimental bath. The method used in this research is descriptive method with a Completely Randomized Design (CRD) as an experimental design. The treatments used are different types of commercial probiotics, with as many as six replications. The main parameters observed were the diversity and density of seawater plankton in the experimental media. Supporting parameters observed were temperature, pH, dissolved oxygen, salinity, ammonia, and C / N and N / P ratio of water. Commercial probiotics are given every 7 days at a dose of 2 mg / l. The results showed that the treatment of different commercial probiotics resulted in differences in diversity, density and plankton dominance. The highest diversity index value (H ') obtained in probiotics A was 6.85 (moderate diversity), and dominance (C) was 0.96, meaning that there was dominant plankton, Chlorella sp. and Oscillatoria sp. whereas the highest plankton density was obtained in probiotics B at week 1 of 5.98x106 ind / ml.

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