The 1998 Coastal Turbidity Plume in Lake Michigan

Schwab, David J.; Beletsky, Dmitry; Lou, Jie-Chung

doi:10.1006/ecss.1999.0531

Cited by 34 publications

(32 citation statements)

References 23 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…annually in lake basins within a period of days, as shown for Lake Michigan (Eadie et al, 1996;Schwab et al, 2000). Material resuspended by these events may be confined to the nearshore in the presence of a coastal plume (Mortimer, 1988;Hall, 2008).…”

Section: Vertical Trends In Depositionmentioning

confidence: 89%

Sources and sinks of microplastics in Canadian Lake Ontario nearshore, tributary and beach sediments

Ballent

Corcoran

Madden

et al. 2016

Marine Pollution Bulletin

521

230

View full text Add to dashboard Cite

Microplastics contamination of Lake Ontario sediments is investigated with the aim of identifying distribution patterns and hotspots in nearshore, tributary and beach depositional environments. Microplastics are concentrated in nearshore sediments in the vicinity of urban and industrial regions. In Humber Bay and Toronto Harbour microplastic concentrations were consistently >500 particles per kg dry sediment. Maximum concentrations of ~28,000 particles per kg dry sediment were determined in Etobicoke Creek. The microplastic particles were primarily fibres and fragments < 2 mm in size. Both low-and high-density plastics were identified using Raman spectroscopy. We provide a baseline for future monitoring and discuss potential sources of microplastics in terms of how and where to implement preventative measures to reduce the contaminant influx. Although the impacts of microplastics contamination on ecosystem health and functioning is uncertain, understanding, monitoring and preventing further microplastics contamination in Lake Ontario and the other Great Lakes is crucial . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Ballent, Anika Manuscript page 1Sources and sinks of microplastics in Canadian Lake Ontario nearshore, tributary and beach sediments. AbstractMicroplastics contamination of Lake Ontario sediments is investigated with the aim of identifying distribution patterns and hotspots in nearshore, tributary and beach depositional environments. Microplastics are concentrated in nearshore sediments in the vicinity of urban and industrial regions. In Humber Bay and Toronto Harbour microplastic concentrations were consistently >500 particles per kg dry sediment. Maximum concentrations of ~28,000 particles per kg dry sediment were determined in Etobicoke Creek. The microplastic particles were primarily fibres and fragments < 2 mm in size. Both low-and high-density plastics were identified using Raman spectroscopy. We provide a baseline for future monitoring and discuss potential sources of microplastics in terms of how and where to implement preventative measures to reduce the contaminant influx. Although the impacts of microplastics contamination on ecosystem health and functioning is uncertain, understanding, monitoring and preventing further microplastics contamination in Lake Ontario and the other Great Lakes is crucial.

show abstract

Section: Vertical Trends In Depositionmentioning

confidence: 89%

Sources and sinks of microplastics in Canadian Lake Ontario nearshore, tributary and beach sediments

Ballent

Corcoran

Madden

et al. 2016

Marine Pollution Bulletin

521

230

View full text Add to dashboard Cite

show abstract

“…The POM has been configured for Lake Michigan geometry (Beletsky and Schwab, 1998;Beletsky et al 2000;Schwab et al, 2000). A uniform grid with a resolution of 10 km is used in the horizontal and 21-s levels in the vertical.…”

Section: Physical Modelmentioning

confidence: 99%

“…The physical part was the well-calibrated Lake Michigan circulation model that was originally modified from the Princeton ocean model (POM) by the NOAA Great Lake Laboratory modeling group (Beletsky and Schwab, 1998;Beletsky et al, 2000;Schwab et al, 2000). The biological part consisted of an eight-component, phosphorus-controlled, lower trophic level food web model with inclusion of phosphate and silicate for nutrients, diatoms and non-diatoms for dominant phytoplankton species, copepod and heterotrophic flagellate for dominant zooplankton species, bacteria and detritus.…”

Section: Introductionmentioning

confidence: 99%

A model study of the coupled biological and physical dynamics in Lake Michigan

Chen

Schwab

et al. 2002

Ecological Modelling

View full text Add to dashboard Cite

A coupled physical and biological model was developed for Lake Michigan. The physical model was the Princeton ocean model (POM) driven directly by observed winds and net surface heat flux. The biological model was an eight-component, phosphorus-limited, lower trophic level food web model, which included phosphate and silicate for nutrients, diatoms and non-diatoms for dominant phytoplankton species, copepods and protozoa for dominant zooplankton species, bacteria and detritus. Driven by observed meteorological forcings, a 1-D modeling experiment showed a controlling of physical processes on the seasonal variation of biological variables in Lake Michigan: diatoms grew significantly in the subsurface region in early summer as stratification developed and then decayed rapidly in the surface mixed layer when silicate supplied from the deep stratified region was reduced as a result of the formation of the thermocline. The non-diatoms subsequently grew in mid and late summer under a limited-phosphate environment and then declined in the fall and winter as a result of the nutrient consumption in the upper eutrophic layer, limitation of nutrients supplied from the deep region and meteorological cooling and wind mixing. The flux estimates suggested that the microbial loop had a significant contribution in the growth of microzooplankton and hence, to the lower-trophic level food web system. The model results agreed with observations, suggesting that the

show abstract

“…The physical explanation of the formation and evolution of this circulation is given in details in Schwab et al (2000) and Beletsky et al (2000).…”

Section: Physical Fieldsmentioning

confidence: 99%

“…These two coastal currents converge in the southeastern portion of the lake to produce an offshore flow of suspended sediment somewhere along the southern shore (Fig. 2) (Csanady, 1982;Schwab, 1983;Mortimer, 1988;Eadie et al, 1996;Schwab et al, 2000). This classic wind-induced circulation pattern was derived based on a steady wind forcing.…”

Section: Introductionmentioning

confidence: 99%

Influences of suspended sediments on the ecosystem in Lake Michigan: a 3-D coupled bio-physical modeling experiment

Chen

Budd

et al. 2002

Ecological Modelling

View full text Add to dashboard Cite

The influence of suspended sediments on the Lake Michigan ecosystem was examined using a 3-dimensional (3-D) coupled biological and physical model developed by Chen et al. (part I). The model was driven by the realistic meteorological forces observed in March 1998, with daily inputs of suspended sediment concentration that were derived from temporally and spatially interpolated satellite imagery. The model results show the significant impact of a seasonally recurring coastal resuspension plume on the spatial and temporal variation of the nutrients and plankton in southern Lake Michigan. The plume-released nutrients played an essential role in maintaining the nutrient level in the lake. Although the growth of phytoplankton in the plume depended on the availability of nutrients and light, the offshore decrease in phytoplankton biomass still satisfied the Sverdrup's relationship. Cross-shore fluxes of nutrients and phytoplankton were controlled by episodic wind events with a period of : 5 -7 days: offshore during southward winds and onshore during northward winds. The flux estimates for biological variables suggest that the microbial food web is a key contributor to secondary production in southern Lake Michigan and the lower trophic level food web system could be dynamically divided into two decoupled loops: (1) detritus-bacteria-microzooplankton-large zooplankton; and (2) nutrient-phytoplankton-detritus. The model-predicted spatial distributions of nutrients and phytoplankton were in reasonable agreement with observations taken during the 1998 EEGLE interdisciplinary cruises, suggesting that the model was sufficiently robust to capture the basic characteristics of the Lake Michigan ecosystem during the plume event.

show abstract

The 1998 Coastal Turbidity Plume in Lake Michigan

Cited by 34 publications

References 23 publications

Sources and sinks of microplastics in Canadian Lake Ontario nearshore, tributary and beach sediments

Sources and sinks of microplastics in Canadian Lake Ontario nearshore, tributary and beach sediments

A model study of the coupled biological and physical dynamics in Lake Michigan

Influences of suspended sediments on the ecosystem in Lake Michigan: a 3-D coupled bio-physical modeling experiment

Contact Info

Product

Resources

About