Challenges in Establishing Multi-lateral Water Quality Objectives for the Great Lakes Basin

2001 ◽  
Author(s):  
Isobel W. Heathcote
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Great Lakes Basin ◽  
Water Quality Objectives

Agriculture and Water Quality in the Canadian Great Lakes Basin: II. Fluvial Sediments

1982 ◽  
Vol 11 (3) ◽  
pp. 482-486 ◽  
Author(s):  
G. J. Wall ◽  
W. T. Dickinson ◽  
L. J. P. Vliet
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Fluvial Sediments ◽  
Great Lakes Basin

Agriculture and Water Quality in the Canadian Great Lakes Basin: I. Representative Agricultural Watersheds

1982 ◽  
Vol 11 (3) ◽  
pp. 473-481 ◽  
Author(s):  
D. R. Coote ◽  
E. M. Mac Donald ◽  
W. T. Dickinson ◽  
R. C. Ostry ◽  
R. Frank
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Agricultural Watersheds ◽  
Great Lakes Basin

Primary determinants of macrophyte community structure in 62 marshes across the Great Lakes basin: latitude, land use, and water quality effects

2001 ◽  
Vol 58 (8) ◽  
pp. 1603-1612 ◽  
Author(s):  
Vanessa L Lougheed ◽  
Barb Crosbie ◽  
Patricia Chow-Fraser
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Community Structure ◽  
Great Lakes ◽  
Aquatic Macrophyte ◽  
Potamogeton Pectinatus ◽  
Great Lakes Basin ◽  
Inland Wetlands ◽  
Macrophyte Community ◽  
Wide Range

We collected water quality, land use, and aquatic macrophyte information from 62 coastal and inland wetlands in the Great Lakes basin and found that species richness and community structure of macrophytes were a function of geographic location and water quality. For inland wetlands, the primary source of water quality degradation was inputs of nutrients and sediment associated with altered land use, whereas for coastal wetlands, water quality was also influenced by exposure and mixing with the respective Great Lakes. Wetlands within the subbasins of the less developed, more exposed upper Great Lakes had unique physical and ecological characteristics compared with the more developed, less sheltered wetlands of the lower Great Lakes and those located inland. Turbid, nutrient-rich wetlands were characterized by a fringe of emergent vegetation, with a few sparsely distributed submergent plant species. High-quality wetlands had clearer water and lower nutrient levels and contained a mix of emergent and floating-leaf taxa with a diverse and dense submergent plant community. Certain macrophyte taxa were identified as intolerant of turbid, nutrient-rich conditions (e.g., Pontederia cordata, Najas flaxilis), while others were tolerant of a wide range of conditions (e.g., Typha spp., Potamogeton pectinatus) occurring in both degraded and pristine wetlands.

scholarly journals Water quality objectives: yardsticks of the Great Lakes Water Quality Agreement.

1999 ◽  
Vol 107 (3) ◽  
pp. 239-241 ◽  
Author(s):  
M Gilbertson
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Water Quality Objectives

Agriculture and Water Quality in the Canadian Great Lakes Basin: IV. Nitrogen

1982 ◽  
Vol 11 (3) ◽  
pp. 493-497 ◽  
Author(s):  
G. H. Neilsen ◽  
J. L. B. Culley ◽  
D. R. Cameron
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Great Lakes Basin

Agriculture and Water Quality in the Canadian Great Lakes Basin: V. Pesticide Use in 11 Agricultural Watersheds and Presence in Stream Water, 1975–1977

1982 ◽  
Vol 11 (3) ◽  
pp. 497-505 ◽  
Author(s):  
R. Frank ◽  
H. E. Braun ◽  
M. Van Hove Holdrinet ◽  
G. J. Sirons ◽  
B. D. Ripley
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Stream Water ◽  
Agricultural Watersheds ◽  
Pesticide Use ◽  
Great Lakes Basin

Assessing Human Imprints on Trace Element Fluxes in the Great Lakes

2021 ◽  
Author(s):  
F. Jacob Pinter ◽  
Colton Bentley ◽  
Bas Vriens
Keyword(s):  
Water Quality ◽  
Trace Elements ◽  
Rare Earth ◽  
Great Lakes ◽  
Trace Element ◽  
Large Scale ◽  
Wastewater Effluent ◽  
Great Lakes Basin ◽  
Element Fluxes ◽  
The World

<p>The extraction and use of rare earth elements, platinum group elements and other trace metals is growing exponentially around the world. The occurrence of these trace elements in anthropogenic waste streams is increasing correspondingly. Yet, conclusive data on trace element concentrations in urban runoff and wastewater is scarce as these elements are typically not part of governmental surveillance programs and barely environmentally regulated. The human imprints on natural trace element fluxes and their potential environmental impacts therefore remain poorly quantified. We are working to quantify natural and anthropogenic trace element fluxes in the Great Lakes basin. The Great Lakes basin provides a globally unique setting to investigate human imprints on large-scale elemental cycling because it houses >60 million people, contains >20% of the world’s freshwater, and is divided into serially connected sub-basins that facilitate environmental system analyses at various scales.</p><p> </p><p>First, we established baseline estimates of current (natural) trace element fluxes in the Great Lakes by aggregating hydrometric and water quality data in simplified black-box mass-balances and dynamic reactor models. These models were informed by >100,000 hydrometric and >50,000 water quality measurements collected across the Great Lakes between 1980-2020 and were calibrated to existing long-term water level and water chemistry records. The bulk of the incorporated data stems from Canadian and US federal and provincial and state monitoring programs, including publicly available datasets from NOAA, EPA, ECCC, Ontario and Michigan state, municipalities, and local conservation authorities. Mass-balance could be achieved up to 94% for conservative elements (Cl, Na), while our dynamic models reveal significantly different source/sink behavior across the upper and lower lakes for more reactive elements. We are currently expanding our models with new ultra-trace level analyses of recent freshwater samples from cruise expeditions, major tributary rivers, and precipitation, as well as sediment records.</p><p> </p><p>Second, we considered municipal and industrial wastewater as a proxy for human activity. We collected and analyzed wastewater effluent and digested sludge samples from >40 US and Canadian wastewater treatment facilities (WWTF) and estimated, for >20 trace elements, average discharge rates into the Great Lakes basin. We compared average wastewater-effluent loads with large-scale natural biogeochemical fluxes in the Great Lakes, allowing us to rank the analyzed trace elements as well as individual lakes and tributaries by their apparent human imprint. Our results show anomalously high loading rates for select rare earth elements and precious metals in several tributary systems. Geospatial attributes of the sampled sewersheds (demographics, land use, industrial activity) serve as independent variables in our ongoing effort to source-track these anomalous loads and establish human imprints on catchment tributaries further upstream.</p>

Linking Water Quality and Fishery Management Facilitated the Development of Ecosystem‐based Management in the Great Lakes Basin

Fisheries ◽  
2019 ◽  
Vol 44 (6) ◽  
pp. 288-292 ◽  
Author(s):  
Amanda G. Guthrie ◽  
William W. Taylor ◽  
Andrew M. Muir ◽  
Henry A. Regier ◽  
Marc Gaden
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Fishery Management ◽  
Great Lakes Basin ◽  
Ecosystem Based Management

Toxicity of a Mixture of Metals on Freshwater Algae

1978 ◽  
Vol 35 (4) ◽  
pp. 479-481 ◽  
Author(s):  
P. T. S. Wong ◽  
Y. K. Chau ◽  
P. L. Luxon
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Key Words ◽  
Green Algae ◽  
Primary Productivity ◽  
Lake Water ◽  
Metal Toxicity ◽  
Culture Medium ◽  
Freshwater Algae ◽  
Water Quality Objectives

Recommended levels of a number of metals for Great Lakes Water Quality Objectives were found to be very toxic to freshwater algae when these metals were present simultaneously in lake water and culture medium. The diatom tested was more sensitive to metal toxicity than the blue-green and green algae. Key words: metals, Water Quality Objectives, toxicity, algae, diatom, primary productivity

Agriculture and Water Quality in the Canadian Great Lakes Basin: III. Phosphorus

1982 ◽  
Vol 11 (3) ◽  
pp. 487-493 ◽  
Author(s):  
M. H. Miller ◽  
J. B. Robinson ◽  
D. R. Coote ◽  
A. C. Spires ◽  
D. W. Draper
Keyword(s):  
Water Quality ◽  
Great Lakes ◽  
Great Lakes Basin
Sign in / Sign up

Export Citation Format

Share Document