Comparison of Phosphorus, Light Climate, and Photosynthesis between Two Culturally Eutrophied Bays: Green Bay, Lake Michigan, and the Bay of Quinte, Lake Ontario

1994 ◽  
Vol 51 (11) ◽  
pp. 2579-2590 ◽  
Author(s):  
E. S. Millard ◽  
P. E. Sager
Keyword(s):  
Lake Michigan ◽  
Lake Ontario ◽  
Light Extinction ◽  
Light Climate ◽  
Green Bay ◽  
Background Light ◽  
Spatial Gradients ◽  
Underwater Light Climate ◽  
Remedial Actions ◽  
Competition For Light

Trophic status, response to phosphorus control, and the underwater light climate were compared for the major bays of Lake Michigan (Green Bay) and Lake Ontario (Bay of Quinte). The Bay of Quinte has shown the greatest response to phosphorus controls, but conditions were not as eutrophic prior to controls as in Green Bay. There were distinct spatial gradients in trophic indicators (chlorophyll a and light extinction) as well as in background light extinction in both bays. Photosynthetic rates remain higher in Green Bay than in the Bay of Quinte, although this is more pronounced for daily photosynthesis per cubic metre at optimal light than for daily rates per square metre. Background light extinction reduced areal photosynthesis in Green Bay because of competition for light absorption between chlorophyll and suspended solids. Potential effects of remedial actions such as reduced phosphorus and suspended loading on phytoplankton photosynthesis were assessed. Lowering chlorophyll would cause a significant decline in areal photosynthesis rates but decreasing background light extinction could lead to higher rates.

scholarly journals Subglacial water-sheet floods, drumlins and ice-sheet lobes

1999 ◽  
Vol 45 (150) ◽  
pp. 201-213 ◽  
Author(s):  
E.M. Shoemaker
Keyword(s):  
New York ◽  
Lake Michigan ◽  
New York State ◽  
Ice Sheet ◽  
Lake Ontario ◽  
High Water ◽  
Green Bay ◽  
Subglacial Lake ◽  
Western Lake ◽  
Subglacial Lakes

AbstractThe effect of subglacial lakes upon ice-sheet topography and the velocity patterns of subglacial water-sheet floods is investigated. A subglacial lake in the combined Michigan–Green Bay basin, Great Lakes, North America, leads to: (1) an ice-sheet lobe in the lee of Lake Michigan; (2) a change in orientations of flood velocities across the site of a supraglacial trough aligned closely with Green Bay, in agreement with drumlin orientations; (3) low water velocities in the lee of Lake Michigan where drumlins are absent; and (4) drumlinization occurring in regions of predicted high water velocities. The extraordinary divergence of drumlin orientations near Lake Ontario is explained by the presence of subglacial lakes in the Ontario and Erie basins, along with ice-sheet displacements of up to 30 km in eastern Lake Ontario. The megagrooves on the islands in western Lake Erie are likely to be the product of the late stage of a water-sheet flood when outflow from eastern Lake Ontario was dammed by displaced ice and instead flowed westward along the Erie basin. The Finger Lakes of northern New York state, northeastern U.S.A., occur in a region of likely ice-sheet grounding where water sheets became channelized. Green Bay and Grand Traverse Bay are probably the products of erosion along paths of strongly convergent water-sheet flow.

Subglacial water-sheet floods, drumlins and ice-sheet lobes

1999 ◽  
Vol 45 (150) ◽  
pp. 201-213 ◽  
Author(s):  
E.M. Shoemaker
Keyword(s):  
New York ◽  
Lake Michigan ◽  
New York State ◽  
Ice Sheet ◽  
Lake Ontario ◽  
High Water ◽  
Green Bay ◽  
Subglacial Lake ◽  
Western Lake ◽  
Subglacial Lakes

AbstractThe effect of subglacial lakes upon ice-sheet topography and the velocity patterns of subglacial water-sheet floods is investigated. A subglacial lake in the combined Michigan–Green Bay basin, Great Lakes, North America, leads to: (1) an ice-sheet lobe in the lee of Lake Michigan; (2) a change in orientations of flood velocities across the site of a supraglacial trough aligned closely with Green Bay, in agreement with drumlin orientations; (3) low water velocities in the lee of Lake Michigan where drumlins are absent; and (4) drumlinization occurring in regions of predicted high water velocities. The extraordinary divergence of drumlin orientations near Lake Ontario is explained by the presence of subglacial lakes in the Ontario and Erie basins, along with ice-sheet displacements of up to 30 km in eastern Lake Ontario. The megagrooves on the islands in western Lake Erie are likely to be the product of the late stage of a water-sheet flood when outflow from eastern Lake Ontario was dammed by displaced ice and instead flowed westward along the Erie basin. The Finger Lakes of northern New York state, northeastern U.S.A., occur in a region of likely ice-sheet grounding where water sheets became channelized. Green Bay and Grand Traverse Bay are probably the products of erosion along paths of strongly convergent water-sheet flow.

Volatilization of polychlorinated biphenyls from Green Bay, Lake Michigan

1993 ◽  
Vol 27 (1) ◽  
pp. 75-87 ◽  
Author(s):  
Diane R. Achman ◽  
Keri C. Hornbuckle ◽  
Steven J. Eisenreich
Keyword(s):  
Polychlorinated Biphenyls ◽  
Lake Michigan ◽  
Green Bay

Recolonization of lake whitefish river spawning ecotypes and estimates of riverine larval production in Green Bay, Lake Michigan

2021 ◽  
Author(s):  
Andrew L. Ransom ◽  
Christopher J. Houghton ◽  
S. Dale Hanson ◽  
Scott P. Hansen ◽  
Lydia R. Doerr ◽  
...  
Keyword(s):  
Lake Michigan ◽  
Lake Whitefish ◽  
Green Bay ◽  
Larval Production

Dioxin-like toxic potency in Forster's tern eggs from Green Bay, Lake Michigan, North America

Chemosphere ◽  
1993 ◽  
Vol 26 (11) ◽  
pp. 2079-2084 ◽  
Author(s):  
D.E. Tillitt ◽  
T.J. Kubiak ◽  
G.T. Ankley ◽  
J.P. Giesy
Keyword(s):  
North America ◽  
Lake Michigan ◽  
Green Bay

Quantifying the influence of cold water intrusions in a shallow, coastal system across contrasting years: Green Bay, Lake Michigan

2018 ◽  
Vol 44 (5) ◽  
pp. 851-863 ◽  
Author(s):  
Brice K. Grunert ◽  
Shelby L. Brunner ◽  
Sajad A. Hamidi ◽  
Hector R. Bravo ◽  
J. Val Klump
Keyword(s):  
Lake Michigan ◽  
Cold Water ◽  
Green Bay ◽  
Coastal System
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