Examination of the role of dreissenids and macrophytes in the phosphorus dynamics of Lake Simcoe, Ontario, Canada

Gudimov, Alexey; Kim, Dongkyun; Young, Joelle D.; Palmer, Michelle E.; Dittrich, Maria; Winter, Jennifer G.; Stainsby, Eleanor A.; Arhonditsis, George B.

doi:10.1016/j.ecoinf.2014.11.007

Cited by 19 publications

(12 citation statements)

References 65 publications

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“…In Lake Simcoe, recent modelling studies reported much lower L net (13 mg TP·m −2 ·year −1 ; Gudimov et al 2015) than previous studies (63-97 mg TP·m −2 ·year −1 ; Nürnberg et al 2013a) that did not account for dreissenids and associated nearshore processes. These lower rates were attributed to the high P retention ) and presence of dreissenids and macrophytes resulting in L net representative of 30%-35% of the external TP load (1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007) (Gudimov et al 2015). However, in the western basin of Lake Erie, both aerobic and anaerobic SRP fluxes were higher at sites with dreissenids than at those without (Matisoff et al 2016).…”

Section: Nearshore Environmentsmentioning

confidence: 72%

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Orihel

Baulch

Casson

et al. 2017

Can. J. Fish. Aquat. Sci.

198

133

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Many physical, chemical, and biological processes in freshwater ecosystems mobilize the nutrient phosphorus (P) from sediments, which in turn may contribute to the formation of harmful algal blooms. Here, we critically reviewed internal P loading in Canadian fresh waters to understand the geographic patterns and environmental drivers of this important process. From 43 publications, we consolidated 618 estimates of internal P loading from Canadian freshwater ponds, lakes, reservoirs, and coastal wetlands (n = 70). Expressed in terms of total P, short-term gross rates in sediment samples (L gross ) ranged from −27 to 54 mg·m −2 ·day −1 (n = 461), while long-term net rates in whole ecosystems (L net ) ranged from −1694 to 10 640 mg·m −2 ·year −1 (n = 157). The main environmental drivers of this variation were oxygen, pH, geology, and trophic state. Internal P loading tended to be higher during the open-water season and most prominent in small prairie lakes. Priorities for future research on internal P loading should include resolving methodological problems, assessing the relative importance of different mechanisms, examining the influence of anthropogenic activities, and quantifying rates in understudied ecosystems. Résumé :De nombreux processus physiques, chimiques et biologiques dans les écosystèmes d'eau douce mobilisent le phosphore (P), un élément nutritif, des sédiments, ce qui peut favoriser la formation de fleurs d'eau néfastes. Nous avons effectué un examen critique de l'apport interne de P dans les plans d'eau douce canadiens afin de comprendre les motifs de répartition géographique et les facteurs environnementaux qui influent sur cet important processus. À la lumière de 43 publications, nous avons colligé 618 estimations de l'apport interne de P d'étangs, de lacs, de réservoirs et de milieux humides littoraux d'eau douce canadiens (n = 70). Exprimés en termes de P total, les taux d'apport de P à court terme pour les échantillons de sédiments (L gross ) vont de −27 à 54 mg·m -2 ·jour -1 (n = 461), alors que les taux nets à long terme à l'échelle de l'écosystème (L net ) vont de −1694 à 10 640 mg·m -2 ·an -1 (n = 157). Les principaux facteurs environnementaux influant sur ces variations sont l'oxygène, le pH, la géologie et l'état trophique. L'apport interne de P tend à être plus élevé durant la période d'eau libre et le plus marqué dans les petits lacs de prairie. La priorité des travaux futurs sur l'apport interne de P devrait porter sur la résolution de problèmes méthodologiques, l'évaluation de l'importance relative de différents mécanismes, l'examen de l'influence des activités humaines et la quantification des taux dans les écosystèmes sous-étudiés. [Traduit par la Rédaction]

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Section: Nearshore Environmentsmentioning

confidence: 72%

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Orihel

Baulch

Casson

et al. 2017

Can. J. Fish. Aquat. Sci.

198

133

View full text Add to dashboard Cite

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“…With a strong focus on coupled biogeochemical processes across the SWI, this code can serve as a stepping stone to generate lake restoration scenarios (Lürling et al, 2016), test hypotheses on the response of algal biomass to external and internal fluxes of P and Fe (Verschoor et al, 2017), and help with "climate-proofing" remediation measures, whose effectiveness will likely be modulated by ongoing climate change . To this end, further model development and evaluation avenues should focus on capturing the temporal (e.g., Amirbahman et al, 2012;Katsev and Dittrich ;2013) and, in particular, spatial heterogeneity in sediment P distributions and recycling efficiencies (e.g., Dittrich et al, 2013;Doan et al, 2018;Gudimov et al, 2015;Matisoff et al, 2017Matisoff et al, , 2016.…”

Section: Discussionmentioning

confidence: 99%

Coupling Water Column and Sediment Biogeochemical Dynamics: Modeling Internal Phosphorus Loading, Climate Change Responses, and Mitigation Measures in Lake Vansjø, Norway

et al. 2019

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We expanded the existing one‐dimensional MyLake model by incorporating a vertically resolved sediment diagenesis module and developing a reaction network that seamlessly couples the water column and sediment biogeochemistry. The application of the MyLake‐Sediment model to boreal Lake Vansjø illustrates the model's ability to reproduce daily water quality variables and predict sediment‐water column exchange fluxes over a long historical period. In prognostic scenarios, we assessed the importance of sediment processes and the effects of various climatic and anthropogenic drivers on the lake's biogeochemistry and phytoplankton dynamics. First, MyLake‐Sediment was used to simulate the potential impacts of increasing air temperature on algal growth and water quality. Second, the key role of ice cover in controlling water column mixing and biogeochemical cycles was analyzed in a series of scenarios that included a fully ice‐free end‐member. Third, in another end‐member scenario P loading from the watershed to the lake was abruptly halted. The model results suggest that remobilization of legacy P stored in the bottom sediments could sustain the lake's primary productivity on a time scale of several centuries. Finally, while the majority of management practices to reduce excessive algal growth in lakes focus on reducing external P loads, other efforts rely on the addition of reactive materials that sequester P in the sediment. Therefore, we investigated the effectiveness of ferric iron additions in decreasing the dissolved phosphate efflux from the sediment and, consequently, limit phytoplankton growth in Lake Vansjø.

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“…This estimate helps close the phosphorus budget, but does not consider any physical processes, such as thermocline movements, and thus is unlikely to represent the hydrodynamics present in the embayment. Gudimov et al () improved on Gudimov et al () by incorporating bidirectional flow between model boxes, calculating flux into Kempenfelt Bay as the balance between net flux, taken from Gudimov et al () estimates, and inflow into Kempenfelt Bay from the catchment. Because net flux was again based on nutrient budgets without incorporating hydrodynamics (due to data limitations), there was no physical basis for their flushing time estimates.…”

Section: Discussionmentioning

confidence: 99%

Internal waves pump waters in and out of a deep coastal embayment of a large lake

Flood

Wells

Dunlop

et al. 2019

Limnology & Oceanography

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Large internal waves are a ubiquitous feature of many thermally stratified lakes, and result in oscillating baroclinic flows that pump water into and out of deep coastal embayments. In the long, narrow, and deep Kempenfelt Bay of Lake Simcoe, we show that stratification and circulation were coupled, so that movements of the thermocline can effectively flush the embayment much faster than hydraulic residence time from river input alone. Internal currents were driven by long‐period internal waves and resulted in large horizontal excursion lengths of several kilometers, which could drive exchange of embayment waters with the main basin. If the embayments are long, wide, and deep, Coriolis forces also deflect the internal wave to follow the coastline on the right‐hand side in the direction of travel as a Kelvin‐type wave, resulting in a net cyclonic circulation in the embayment. This residual counterclockwise flow further facilitated flushing of Kempenfelt Bay. For the summer of 2015, we estimate that forced and free internal wave dynamics alone resulted in a seasonally averaged flushing timescale as short as 17 ± 6 d for the surface mixed layer, and of 13.5 ± 5 d for the hypolimnetic waters of Kempenfelt Bay. Kempenfelt Bay is representative of many long, deep, and narrow embayments found in the Laurentian Great Lakes and arctic fjords. The exchange processes investigated here are relevant for determining the dynamics of water quality parameters used as indicators to evaluate lake health and fish habitat.

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Examination of the role of dreissenids and macrophytes in the phosphorus dynamics of Lake Simcoe, Ontario, Canada

Cited by 19 publications

References 65 publications

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Coupling Water Column and Sediment Biogeochemical Dynamics: Modeling Internal Phosphorus Loading, Climate Change Responses, and Mitigation Measures in Lake Vansjø, Norway

Internal waves pump waters in and out of a deep coastal embayment of a large lake

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