A Review of the Components, Coefficients and Technical Assumptions of Ontario's Lakeshore Capacity Model

Paterson, Andrew M.; Dillon, Peter J.; Hutchinson, Neil; Futter, Martyn N.; Clark, Bev J.; Mills, Ryan; Reid, Ron; Scheider, W. A.

doi:10.1080/07438140609353880

Cited by 40 publications

(29 citation statements)

References 23 publications

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“…Domestic sewage is the main contribution of anthropogenic sources to the total P load for most of Canadian lakes (Dillon and Evans, 1993;Paterson et al, 2006). The total P load from sewage systems is a function of (i) the population and (ii) the annual P consumption per capita (Paterson et al, 2006).…”

Section: Lake Quality Evolutionmentioning

confidence: 99%

“…The total P load from sewage systems is a function of (i) the population and (ii) the annual P consumption per capita (Paterson et al, 2006). Assuming an effluent concentration of 9 mg L −1 (considering reductions in the phosphate content of detergents) and a daily water usage of 200 L capita −1 day −1 (as was done by Paterson et al, 2006), the P contribution is estimated to be 0.66 kg capita −1 yr −1 . Investigated lakes in the OUT and LAU regions collect sewage from 4 (Lake Lachigan), 53 (Lake Lanthier), 117 (Lake Lacroix), and 17 houses (Lake Lacasse) within their catchments.…”

Section: Lake Quality Evolutionmentioning

confidence: 99%

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Impacts of changes in groundwater recharge on the isotopic composition and geochemistry of seasonally ice-covered lakes: insights for sustainable management

Arnoux

Barbecot²,

Gibert-Brunet

et al. 2017

Hydrol. Earth Syst. Sci.

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Abstract. Lakes are under increasing pressure due to widespread anthropogenic impacts related to rapid development and population growth. Accordingly, many lakes are currently undergoing a systematic decline in water quality. Recent studies have highlighted that global warming and the subsequent changes in water use may further exacerbate eutrophication in lakes. Lake evolution depends strongly on hydrologic balance, and therefore on groundwater connectivity. Groundwater also influences the sensitivity of lacustrine ecosystems to climate and environmental changes, and governs their resilience. Improved characterization of groundwater exchange with lakes is needed today for lake preservation, lake restoration, and sustainable management of lake water quality into the future. In this context, the aim of the present paper is to determine if the future evolution of the climate, the population, and the recharge could modify the geochemistry of lakes (mainly isotopic signature and quality via phosphorous load) and if the isotopic monitoring of lakes could be an efficient tool to highlight the variability of the water budget and quality.Small groundwater-connected lakes were chosen to simulate changes in water balance and water quality expected under future climate change scenarios, namely representative concentration pathways (RCPs) 4.5 and 8.5. Contemporary baseline conditions, including isotope mass balance and geochemical characteristics, were determined through an intensive field-based research program prior to the simulations. Results highlight that future lake geochemistry and isotopic composition trends will depend on four main parameters: location (and therefore climate conditions), lake catchment size (which impacts the intensity of the flux change), lake volume (which impacts the range of variation), and lake G index (i.e., the percentage of groundwater that makes up total lake inflows), the latter being the dominant control on water balance conditions, as revealed by the sensitivity of lake isotopic composition. Based on these model simulations, stable isotopes appear to be especially useful for detecting changes in recharge to lakes with a G index of between 50 and 80 %, but response is non-linear. Simulated monthly trends reveal that evolution of annual lake isotopic composition can be dampened by opposing monthly recharge fluctuations. It is also shown that changes in water quality in groundwaterconnected lakes depend significantly on lake location and on the intensity of recharge change.

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Section: Lake Quality Evolutionmentioning

confidence: 99%

Section: Lake Quality Evolutionmentioning

confidence: 99%

Impacts of changes in groundwater recharge on the isotopic composition and geochemistry of seasonally ice-covered lakes: insights for sustainable management

Arnoux

Barbecot²,

Gibert-Brunet

et al. 2017

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…First, Ontario's Lakeshore Capacity Model (LCM) was used to calculate the phosphorus budget for each lake based on natural and anthropogenic inputs of phosphorus, hydrologic and morphometric data, assumptions or estimates (Paterson et al 2006). The model output, the total phosphorus concentration of the lake during the spring overturn period, was subsequently used as an input variable in the oxygen submodel (described later).…”

Section: Modelling Approachesmentioning

confidence: 99%

“…Furthermore, the empirical model allows resource managers to predict possible future scenarios resulting from increased shoreline residential development or the conversion of forested catchments to intensive agriculture or urban land (Paterson et al 2006). Even more powerful, perhaps, the combined use of the empirical and paleoecological models allows lake managers to examine changes in deepwater oxygen concentrations in response to both a single targeted stressor and multiple environmental stressors, thus encapsulating the hypothetical scenarios presented above (Fig.…”

Section: Model Comparisons: Strengths and Limitationsmentioning

confidence: 99%

Assessing hypolimnetic oxygen concentrations in Canadian Shield lakes: Deriving management benchmarks using two methods

Paterson

Quinlan

Clark

et al. 2009

Lake and Reservoir Management

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“…In addition, many models require precise TP data as input variables (Molot et al 1992) or for use in assessing the accuracy of model predictions (Paterson et al 2006). Many cautions surround the collection of precise TP data, some of which are overlooked in standard field sample collection protocols.…”

mentioning

confidence: 99%

Assessing variability in total phosphorus measurements in Ontario lakes

Clark¹,

Paterson

Jeziorski

et al. 2010

Lake and Reservoir Management

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A Review of the Components, Coefficients and Technical Assumptions of Ontario's Lakeshore Capacity Model

Cited by 40 publications

References 23 publications

Impacts of changes in groundwater recharge on the isotopic composition and geochemistry of seasonally ice-covered lakes: insights for sustainable management

Impacts of changes in groundwater recharge on the isotopic composition and geochemistry of seasonally ice-covered lakes: insights for sustainable management

Assessing hypolimnetic oxygen concentrations in Canadian Shield lakes: Deriving management benchmarks using two methods

Assessing variability in total phosphorus measurements in Ontario lakes

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