scholarly journals Longitudinal evaluation of the impact of traditional rainbow trout farming on receiving water quality in Ireland

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5281 ◽  
Author(s):  
Alexandre Tahar ◽  
Alan M. Kennedy ◽  
Richard D. Fitzgerald ◽  
Eoghan Clifford ◽  
Neil Rowan
Keyword(s):  
Water Quality ◽  
Rainbow Trout ◽  
Fish Farming ◽  
Independent Data ◽  
Fish Farms ◽  
Cumulative Impact ◽  
Four Seasons ◽  
River Quality ◽  
Flow Through ◽  
The Impact

In the context of future aquaculture intensification, a longitudinal ten-year evaluation of the current traditional rainbow trout production in Ireland was performed. Publically available and independent data obtained from local authorities were gathered and analysed. Inlet and outlet concentrations of parameters such as BOD5, ammonium, nitrite, dissolved oxygen and pH for four consecutive flow-through fish farms covering the four seasons over a ten-year period (2005–2015) were analysed. The objectives of the study were (i) to characterize the impact of each fish farm on water quality in function of their respective production and identify any seasonal variability, (ii) to quantify the cumulative impact of the four farms on the river quality and to check if the self-purification capacity of the river was enough to allow the river to reach back its background levels for the analysed parameters, (iii) to build a baseline study for Ireland in order to extrapolate as a dataset for expected climate change and production intensification. For most of the parameter analysed, no significant impact of the fish farming activity on water quality/river quality was observed. These results, the first ones generated in Ireland so far, will have to be completed by a survey on biodiversity and ecotoxicology and compared after production intensification and the likely future introduction of water treatment systems on the different sites.

scholarly journals Full Water Quality Monitoring of a Traditional Flow-Through Rainbow Trout Farm

Fishes ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 28 ◽  
Author(s):  
Alexandre Tahar ◽  
Alan Kennedy ◽  
Richard Fitzgerald ◽  
Eoghan Clifford ◽  
Neil Rowan
Keyword(s):  
Water Quality ◽  
Rainbow Trout ◽  
Water Treatment ◽  
Water Reuse ◽  
Water Quality Monitoring ◽  
Fish Growth ◽  
Ammonium Concentration ◽  
Fish Welfare ◽  
Flow Through ◽  
The Impact

Traditional freshwater rainbow trout farms are still popular in some European countries such as Poland, France and Ireland. These systems generally operate in flow-through configuration. The impact such production systems might have on water quality remains mostly unknown. The present study was set up to fulfil this objective of monitoring water quality on different fish farm locations in order to identify the impacts of the whole farm (comparison of farm inlet and outlet) and at pond scale in order to understand the water quality dynamics and to better understand the impact of multiple water reuse (water passes) in a given pond on water quality. In the absence of any sort of water treatment, an increase in the number of water passes was shown to create an increase in ammonium concentration along the farm. Finally, this traditional flow-through rainbow trout production system was revealed to almost be at its full carrying capacity with respect to internal water quality parameters and fish welfare. To increase fish production, some water treatment techniques (solid/liquid separation, nitrification) would have to be introduced in order to optimize the rearing water quality for fish growth and to minimize the release of pollutants in the receiving water to limit the impact on the environment.

scholarly journals Effect of Water Management Technology Used in Trout Culture on Water Quality in Fish Ponds

Water ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1264 ◽  
Author(s):  
Marcin Sidoruk ◽  
Ireneusz Cymes
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Rainbow Trout ◽  
Negative Impact ◽  
Fish Mortality ◽  
Fish Ponds ◽  
Fish Farms ◽  
Cascade Systems ◽  
Recirculation System ◽  
The Impact

Pond management requires that a specific fish culture is conducted while taking into account both production possibilities and profitability, as well as the impact it may have on the natural environment. This study aimed to evaluate the effect of three water management systems used in rainbow trout culture on water quality in fish ponds. It was conducted at six trout farms and differing in water management strategy. After water had flown through the fishing ponds, its quality was significantly less impaired at farms operating in the flow and cascade systems. In turn, waters discharged from farms using the recirculation system were characterized by the poorest quality and lowest values on the Water Quality Index (WQI). It was found that the flow and cascade systems can be used to maintain the water quality and give less fish mortality for trout. It has been shown that the use of a water recirculation system in rainbow trout cultures significantly affects the quality of water in fishponds and can potentially lead to suppression of fish resistance and in extreme cases, to fish death. This study will help fish farmers in choosing the optimal variant of water management, taking into account both the best fish health with the least negative impact of fish farms on the environment.

Fish farming in Denmark: environmental impact of regulative legislation

1995 ◽  
Vol 31 (10) ◽  
pp. 73-84 ◽  
Author(s):  
T. M. Iversen
Keyword(s):  
Organic Matter ◽  
Environmental Impact ◽  
Freshwater Fish ◽  
Aquatic Environment ◽  
Action Plan ◽  
Fish Farming ◽  
Fish Farms ◽  
Nitrogen And Phosphorus ◽  
Local Impact ◽  
The Impact

The main environmental problems associated with fish farming in Denmark are attributable to the dam, the “dead reach” and nutrient and organic matter discharge. The environmental regulation of fish farming in Denmark started with the Environmental Protection Act of 1974, the Statutory Order of 1985 forbidding wet feed, and the Action Plan on the Aquatic Environment of 1987. In the case of freshwater fish farms, the latter was implemented through the measures stipulated in the 1989 Statutory Order on Fish Farms. The impact of Danish legislative measures to reduce and regulate the environmental effects of freshwater fish farms can be summarized as follows: - the number of fish farms has been reduced from about 800 in 1974 to about 500 at present; - production has tripled since 1974 and has been stable since 1989; - a change from wet to dry feed has reduced the environmental impact of the farms; - the national goals of the Action Plan on the Aquatic Environment of 1987 for reducing fish farm discharges of organic matter, nitrogen and phosphorus have been fulfilled. The main remaining problems are that: - the local impact of fish farms on downstream stream quality is still much too high in about 15% of cases; - the problem of the passage of migrating invertebrates and fish is still unsolved at some farms; - the problems posed by “dead reaches” are still unsolved. It is concluded that sustainable fish farming is possible in Denmark, but with the present technology production will have to be significantly reduced.

Environmental impact of nutrients from nordic fish farming

1995 ◽  
Vol 31 (10) ◽  
pp. 61-71 ◽  
Author(s):  
M. Enell
Keyword(s):  
Major Part ◽  
Fish Farming ◽  
Fish Farms ◽  
Feed Composition ◽  
The North ◽  
Comprehensive Development ◽  
The Baltic ◽  
Inland Water Bodies ◽  
The Impact ◽  
Feed Coefficient

During the last 20 years there has been an interesting development of the Nordic fish farming, with regard to the feeding and farming technology and to the increase in production quantities. During the period 1974-1994 the production increased from 15,800 to about 250,000 tonnes/year. In 1974 the major part of the production was in Denmark, and in 1994 the major part was in Norway. The nutrient impact of fish farming on surrounding sea areas is mainly a function of the feed coefficient, the feed composition and metabolic processes in the fish. The comprehensive development of the feed composition and the feeding technology has resulted in reduced load of unmetabolized nutrients from fish farms, calculated per tonne fish produced. In 1974 the mean Nordic feed coefficient was 2.08 and in 1994 the coefficient was 1.25. Feed coefficients of 1.0-1.1 are now reported for Danish and Norwegian freshwater and marine fish farms. The nitrogen (N) and phosphorus (P) content of the feed has decreased, in addition the quality of the nutrient substances in the feed has changed, especially for N. The N content has decreased from 7.8 to 6.8% during the period 1974-1994 and the content of P has decreased from 1.7 to 0.7% during the same period. This development of the feed coefficient and the feed composition has resulted in a present load from a typical Nordic fish farm of 55 kg N and 4.8 kg P/t fish produced. The figures for 1974 were 132 kg N and 31 kg P/t fish produced. The Nordic fish farming production in 1994 resulted in a load of about 13,750 t N and about 1,200 t P on the actual recipients. The load from the Swedish, Finnish and Danish fish farming operations, with the Baltic Sea and the Skagerrak as the recipients, is negligible in comparison with other pollution sources. The quantities of N and P from the fish farming are equal to 0.5% of the atmospheric deposition on the sea surface and 3% of the atmospheric P load. Norwegian, Icelandic and the Faroe Islands fish farming operations are using the North Sea and the Norwegian Sea as the recipients. However, the nutrient load from single fish farms in certain coastal and inland water bodies can be significant and must be considered in the impact assessment together with other sources.

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 Prospects for feed use «Aller aqua» in the diet of rainbow trout

2017 ◽  
Vol 19 (74) ◽  
pp. 95-98
Author(s):  
J. I. Pivtorak ◽  
I. Y. Bobel ◽  
O. V. Bozhyk
Keyword(s):  
Rainbow Trout ◽  
Cold Water ◽  
Animal Feed ◽  
Fish Farming ◽  
Foreign Firms ◽  
Manufactured Products ◽  
Cultivation Technology ◽  
Present Rate ◽  
The Impact

The materials of the article the analysis of periodic research reports on prospects of feed «Aller Aqua» in the diet of rainbow trout. Overview conceptual experience of increasing the volume of production of this important sector of agricultural production as the breeding and rearing of trout. Trout industry is the most productive direction of the coldwater aquaculture. Costs highly specialized feed for growing trout reach 70% of the total cost of the fish, so the features of feeding, nutritional feed and cultivation technology is relevant and of interest to manufacturers. Today on the Ukrainian market sales volume of feed for trout is a leading foreign firms: Aller Aqua, Biomar, Skretting and others. The quality of the manufactured products of domestic manufacturers often inferior to the requirements of the feed for trout, as domestic production is not always withstand competition. Therefore, at the present rate of trout industry as a promising field of fish farming, and the corresponding demand for feed for valuable fish species such high dependence on imports, now greatly reduces the volume of cold-water aquaculture cultivation sites that accordingly obliges producers special animal feed to improve their quality. The basis of our research is tasked with optimizing normalized using feeding trout feed «Aller Aqua» and results analysis and comparative characteristics of growing trout using Ukrainian feed manufacturers. Purpose is to clarify the nature of the impact of feed «Aller Aqua» and physiological metabolism, growth, development, reproduction and obtaining marketable products rainbow trout that could be the basis for conclusions about the appropriateness and use of feed rules «Aller Aqua», and the possibility of alternative feed means in terms of economy.

scholarly journals Growth of rainbow trout (oncorhynchus mykiss) in the conditions of Tashkent province, Uzbekistan

2021 ◽  
Vol 258 ◽  
pp. 04040
Author(s):  
SH Sulaymonov ◽  
G Abdullaev ◽  
S Saidumarov
Keyword(s):  
Water Quality ◽  
Rainbow Trout ◽  
Dissolved Oxygen ◽  
Oncorhynchus Mykiss ◽  
Water Temperature ◽  
Fish Farming ◽  
Local Conditions ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Fish Productivity ◽  
Feed Coefficient

Rainbow trout is a new fish farming object for Uzbekistan, the adaptability of which (first of all, growth) to local conditions should be carefully studied. We analyzed the growth of rainbow trout in the conditions of flowing pools and cages in the foothill zone of Tashkent province of Uzbekistan. From March to October, the water temperature in the Khojikent reservoir varied from 4.9 to 13.1 °C, the amount of dissolved oxygen was 8.4 to 11.5 mg/l, and the pH was 7.40 to 7.67. In the flowing basin, the temperature was 15-18 °C, pH 7.2-7.5, the amount of dissolved oxygen 6.1-11.2 mg/l. The conditions of the foothill zones of Uzbekistan in terms of water quality are favorable for the development of trout breeding. During the season, fish in cages increased from 250 g to 623 g, in pools from 25 g to 390 g on average. The waste was 1.7%. The actual fish productivity of the basin is 39 kg/m3, the cage is 30 kg/m3 and the feed coefficient in the basin is 1.2, in the cages - 1.09.

scholarly journals Bio-Évaluation De La Qualité Des Eaux De Surface D’oued Beht (Maroc) Indice Biologique Global Des Réseaux De Contrôle Et De Surveillance (IBG-RCS)

2017 ◽  
Vol 13 (3) ◽  
pp. 94
Author(s):  
Lamhasni Nihad ◽  
Chillasse Lahcen ◽  
Timallouka Mohamed
Keyword(s):  
Water Quality ◽  
Biological Assessment ◽  
Biological Index ◽  
Surveillance Networks ◽  
Urban Waste ◽  
River Quality ◽  
Anthropogenic Action ◽  
The Impact

The present study concerns the biological assessment of Beht’s river quality in Morocco during the period Mai-June of 2014 using the standard Global Biological Index of Control and Surveillance Networks (GBICSN).Thus twelve sampling stations were chosen for the determination of the impact of agricultural and urban waste of Beht’s area on the biological waters quality of this river. As results this biological approach showed downgrading notes of the biological index from the watershed’s uphill to its downstream reflecting this way the deterioration of water quality with increasing anthropogenic action and inputs.

scholarly journals Multivariate statistical approaches to benthic macroinvertebrates and water quality for farming impact assessment in Selangor River, Malaysia

2021 ◽  
Author(s):  
Nadeesha Dilani Hettige ◽  
Rohasliney Binti Hashim ◽  
Zulfa Hanan Ash’aari ◽  
Ahmad Abas Kutty ◽  
Nor Rohaizah Jamil
Keyword(s):  
Water Quality ◽  
Benthic Macroinvertebrates ◽  
Oxygen Demand ◽  
Fish Farming ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Ammoniacal Nitrogen ◽  
Fish Farms ◽  
Organic Contamination ◽  
Multivariate Statistical

Abstract This study examined the influence of fish farming activities on water quality and benthic macroinvertebrates at the Rawang sub-basin of Selangor River. Multivariate statistical techniques were used to determine major influencing water quality parameters causing organic contamination and the dominant pollution-tolerant benthic macroinvertebrates. Sampling was conducted at Guntong River (SR1), Guntong River’s tributary (SR2, the control site), Kuang River (SR3 and SR6), Gong River (SR4), and Serendah River (SR5) using random sampling techniques based on accessibility and proximity to fish farms. Benthic macroinvertebrates and water samples were collected from April 2019 to March 2020. Based on the principal components analysis (PCA), electrical conductivity (EC), dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), ammoniacal-nitrogen, and total suspended solids (TSS) were major water quality parameters influenced by fish farming activities. The Canonical Correspondence Analysis (CCA) revealed that several taxa of benthic macroinvertebrates (Chironomidae, Naididae, Lumbriculidae, Tubificidae, unidentified Oligochaeta, Leeches (Helobdella sp.), Planorbidae, and some Odonata) were moderately or highly sensitive to TSS, BOD, COD, turbidity, ammoniacal-nitrogen, and EC. These taxa were dominant in the sampling sites, which were close to fish farms. Findings in this study showed that fish farming activities impacted the water quality and benthic macroinvertebrates in this sub-basin.

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