Water Quality Modeling of Caged Aquaculture Impacts in Lake Wolsey, North Channel of Lake Huron

Hamblin, P. F.; Gale, Peggy

doi:10.1016/s0380-1330(02)70560-1

Cited by 18 publications

(17 citation statements)

References 5 publications

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“…However, there may be other harbours and embayments where the simple 1-D model is more applicable than in Hamilton Harbour in estimating exchange. For example, Hamblin and Gale (2002) achieved reasonable agreement in the simulation of total phosphorus concentration using a 1-D model for the exchange between an embayment and Lake Huron where the excursions greatly exceeded the dimensions of the mouth of the bay.…”

Section: Discussionmentioning

confidence: 84%

“…Mathematical models are widely applied to coastal engineering problems, for example, the environmental assessment of the impact of sewage diversion (Signell et al 2000). Environmental degradation arising from caged aquaculture in the coastal waters of Lake Huron has led to the application of exchange and water quality models (Hamblin and Gale 2002).…”

Section: Introductionmentioning

confidence: 99%

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Numerical models of the exchange flows between Hamilton Harbour and Lake Ontario

Hamblin¹,

He²

2003

Can. J. Civ. Eng.

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Accurate simulations of the flow and the transport of water quality constituents in such coastal zones of large lakes as the western end of Lake Ontario and Hamilton Harbour are needed to assess the impact on pollutant levels of cleanup operations and sewage diversions. Coastal models in temperate zone lakes are classified in terms of density stratification, uniform in winter and stratified during summer. During the winter period a 1-D model of the flow between a lake and adjacent harbour is shown to agree favourably with advanced acoustic measurements of the flow in the connecting passage, but does not account for the observed winter buildup of salinity in the harbour. A calibrated 2-D hydrodynamic and salt transport model is used to show that significant exchange does not take place unless the excursion of the inflow is several times greater than the length of the connecting channel, an infrequent occurrence. The exchange is also shown to depend on the flow field at the entrances of the channel. In summer a 1-D vertical model illustrates the dramatic effect of the inflow from Lake Ontario on hypolimnetic temperatures of the harbour. Three-dimensional hydrodynamic and temperature-salt transport models are validated by extensive field observations taken in 1996. The stratified exchange is much stronger than its winter counterpart and more steady. Winter exchange is forced by short-term water level fluctuations, whereas summer or stratified exchange by slowly fluctuating density contrasts between the two water bodies.

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Section: Discussionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Numerical models of the exchange flows between Hamilton Harbour and Lake Ontario

Hamblin¹,

He²

2003

Can. J. Civ. Eng.

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“…The demand for oxygen does not occur directly where the effluent or runoff water is discharged but instead somewhere downstream where decomposition finally occurs (Adam and Keith, 2012). Hamblin and Gale (2002) also added that, the biological and chemical oxygen demand of wastes discharged from land-based aquaculture facilities can reduce dissolved oxygen concentrations in lotic waters for short distances downstream. This explains why downstream recorded the least dissolve oxygen level.…”

Section: Resultsmentioning

confidence: 99%

Assessment of pond effluent effect on water quality of the Asuofia Stream, Ghana

Amankwaah¹,

Cobbina²,

Tiwaa³

et al. 2014

Afr. J. Environ. Sci. Technol.

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The study was done to assess the effects of potential pond effluent on the physico-chemical parameters of the receiving streams. Forty two (42) samples were collected from five ponds, upstream and downstream stations of the receiving stream for a period of six months. In situ measurement was conducted for physical parameters using a portable multi-parameter water quality meter (HANNA, HI9828). Samples were collected and transported to the Water Research Institute laboratory, Tamale for the analysis. pH values recorded ranged between 7.6 and 7.9 pH-unit with a mean of 7.69±0.13 pH-unit for pond samples, 7.48 to 7.73 pH-unit with a mean of 7.59±0.1 pH-unit for downstream samples and 7.25 to 7.5 pH-unit with a mean of 7.36±0.11 pH-unit for upstream samples. The nitrate concentrations at the upstream stations (7.57±0.93 mg/l) was found to be higher than that of downstream (5.02±0.25 mg/l) and in ponds (5.0±0.25 mg/l). Comparatively, aquaculture ponds recorded physico-chemical parameters that are significantly higher than those recorded in stream locations. Nitrate and dissolve oxygen were significantly higher at the upstream than downstream and ponds. The study reveals that activities such as vegetables and cereal cultivation, livestock farming and refuse dumping within the watershed serves as source of pollution and nutrient enrichment in the receiving stream.

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“…The main impacts related to aquaculture in rivers, lakes, and reservoirs are associated to the increased flow of particles and dissolved nutrients in the environment (Sugiura et al, 2006;Azevedo et al, 2011;Gondwe et al, 2011;Canale et al, 2016); the mortality and loss of biodiversity of fishes (Sang, 2006); the contamination by chemical compounds (through the use of antibiotics, antiparasitics, anesthetics, and disinfectants) (Burridge et al, 2010); the lower dissolved oxygen concentrations (Hamblin & Gale, 2002); the occurrence of harmful algal blooms (Sowles, 2009); and the increase in the contents of organic matter and metals in the sediment (Xia et al, 2016). In addition to these factors, the following were observed: changes in the biodiversity of the microflora and benthic sediments (Buschmann et al, 2009); changes in the trophic structure and biological attributes of the diet of wild fishes due to the introduction of exotic species from aquaculture (Arthur et al, 2010;Carvalho et al, 2012;Ramos et al, 2014); dissemination of diseases that may affect wild populations of aquatic organisms (Israel, 2007); and, in some cases, direct conflicts with other users of water resources, which can cause adverse social effects (Béné & Obirih-Opareh, 2009).…”

Section: Environmental Impact Of Aquaculture In Lakes and Reservoirsmentioning

confidence: 99%

Mathematical modeling for the management of the carrying capacity of aquaculture enterprises in lakes and reservoirs

Bueno

Bureau

Skipper-Horton

et al. 2017

Pesq. agropec. bras.

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-Flooded areas of reservoirs and artificial lakes have been increasingly used for fish production; however, the waste generated by aquaculture has become a concern for the sustainable development of this activity. One of the main strategies adopted by management and regulatory agencies is the use of hydrodynamic models that calculate the carrying or nutrient load capacity of a particular water body and the effect of fish farming. These models are precise in the development of optimal strategies for feeding and waste calculation. This review paper addresses this topic and describes the methodology developed for the analysis and simulation of the carrying capacity for fish production, based on the integration of the Fish-PrFEQ nutritional bioenergetic model and the hydrodynamic model of Dillon & Rigler. This methodology allows evaluating the real contribution of aquaculture waste and assists in the planning and management of aquaculture in these aquatic environments, besides enabling and encouraging producers and the aquaculture industry to use fish food with better nutritional quality and lower environmental impact.Index terms: hydrodynamic modeling, mass balance, nutritional bioenergetics, solid waste, sustainable aquaculture. Modelagem matemática para gestão da capacidade de suporte de empreendimentos aquícolas em lagos e reservatóriosResumo -Áreas inundadas de reservatórios e lagos artificiais estão sendo cada vez mais utilizadas para a produção de peixes; contudo, os resíduos lançados pela aquicultura tornaram-se uma preocupação para o desenvolvimento sustentável desta atividade. Uma das principais estratégias adotadas pelos órgãos gestores e fiscalizadores consiste no uso de modelos hidrodinâmicos que calculam a capacidade de suporte ou de carga de nutrientes de um determinado corpo hídrico e a influência dos cultivos de peixes. Esses modelos são precisos no desenvolvimento de estratégias ideais de alimentação e cálculo de resíduos. Este trabalho de revisão aborda esta temática e traz uma descrição da metodologia desenvolvida para análise e simulação da capacidade de suporte para produção de pescados, baseada na integração do modelo bioenergético nutricional "Fish-PrFEQ" com o modelo hidrodinâmico de Dillon & Rigler. Esta metodologia permite avaliar a real contribuição de resíduos aquícolas e auxilia no planejamento e na gestão da aquicultura nestes ambientes aquáticos, além de possibilitar e incentivar que os produtores e a indústria aquícola utilizem rações de melhor qualidade nutricional e menor impacto ambiental.Termos para indexação: modelagem hidrodinâmica, balanço de massa, bioenergética nutricional, resíduos sólidos, aquicultura sustentável.

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Water Quality Modeling of Caged Aquaculture Impacts in Lake Wolsey, North Channel of Lake Huron

Cited by 18 publications

References 5 publications

Numerical models of the exchange flows between Hamilton Harbour and Lake Ontario

Numerical models of the exchange flows between Hamilton Harbour and Lake Ontario

Assessment of pond effluent effect on water quality of the Asuofia Stream, Ghana

Mathematical modeling for the management of the carrying capacity of aquaculture enterprises in lakes and reservoirs

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