Climate, Landscape, and Management Effects on Nitrate and Soluble Phosphorus Concentrations in Subsurface Drainage Discharge in the Western Lake Erie Basin

2016 ◽  
Keyword(s):  
Lake Erie ◽  
Subsurface Drainage ◽  
Western Lake ◽  
Soluble Phosphorus ◽  
Western Lake Erie ◽  
Management Effects

Weather, Landscape, and Management Effects on Nitrate and Soluble Phosphorus Concentrations in Subsurface Drainage in the Western Lake Erie Basin

2018 ◽  
Vol 61 (1) ◽  
pp. 223-232 ◽  
Author(s):  
Lindsay A. Pease ◽  
Norman R. Fausey ◽  
Jay F. Martin ◽  
Larry C. Brown
Keyword(s):  
Water Quality ◽  
Lake Erie ◽  
Subsurface Drainage ◽  
Quality Data ◽  
P Loss ◽  
Western Lake ◽  
Soluble Phosphorus ◽  
Management Factors ◽  
Soluble P ◽  
Western Lake Erie

Abstract. Subsurface drainage, while an important and necessary agricultural production practice in the Midwest, contributes nitrate (NO3-N) and soluble phosphorus (P) to surface waters. Eutrophication (i.e., excessive enrichment of surface water by NO3-N and soluble P) supports harmful algal blooms in receiving waters. The magnitude of NO3-N and soluble P loss in subsurface drainage varies greatly by landscape, weather, and field management factors. This study evaluated both the relative and combined impacts of these factors on observed NO3-N and soluble P concentrations in subsurface drainage water in the Western Lake Erie Basin watershed. Water quality data from multiple drainage outlet sites in northwest Ohio provided evidence that the primary management factors affecting NO3-N and soluble P loss were the amount and time of fertilizer application. Results strongly support following Tri-State fertilizer recommendations and 4R nutrient stewardship principles to reduce the risk of NO3-N and soluble P loss. Results also provided evidence of NO3-N and soluble P transport to subsurface drains via different pathways. Due to differences in NO3-N and soluble P transport through the soil profile (via baseflow and preferential flow, respectively), management approaches taken to reduce one nutrient may exacerbate losses of the other. Further research is needed to address potential changes in field hydrology (and consequently the in-field transport of soluble nutrients) from different types of agricultural best management practices (BMPs) and to evaluate optimal stacking of BMPs to achieve reductions in both NO3-N and soluble P loss. Controlled drainage has a high potential for stacking with other BMPs because it is primarily a physical discharge and load reduction practice. Keywords: Agriculture, Eutrophication, Nutrient transport, Regression analysis, Water quality.

Projected Changes to the Trophodynamics of PCBs in the Western Lake Erie Ecosystem Attributed to the Presence of Zebra Mussels (Dreissena polymorpha)

1998 ◽  
Vol 32 (24) ◽  
pp. 3862-3867 ◽  
Author(s):  
Heather A. Morrison ◽  
Frank A. P. C. Gobas ◽  
Rodica Lazar ◽  
D. Michael Whittle ◽  
G. Douglas Haffner
Keyword(s):  
Dreissena Polymorpha ◽  
Lake Erie ◽  
Zebra Mussels ◽  
Western Lake ◽  
Projected Changes ◽  
Western Lake Erie

Environmental Factors Affecting the Strength of Walleye (Stizostedion vitreum vitreum) Year-Classes in Western Lake Erie, 1960–70

1975 ◽  
Vol 32 (10) ◽  
pp. 1733-1743 ◽  
Author(s):  
Wolf-Dieter N. Busch ◽  
Russell L. Scholl ◽  
Wilbur L. Hartman
Keyword(s):  
Water Level ◽  
Lake Erie ◽  
Stizostedion Vitreum ◽  
Low Oxygen ◽  
Brood Stock ◽  
Factors Affecting ◽  
Spawning Area ◽  
Western Lake ◽  
Class Strength ◽  
Western Lake Erie

Commercial production of walleyes (Stizostedion vitreum vitreum) from western Lake Erie declined from 5.9 million pounds in 1956 to 140,000 pounds by 1969. Since 1956, marked irregularity in year-class success has developed. Only four year-classes were considered good during 1959–70. The rate and regularity of water warming during the spring spawning and incubation periods in 1960–70 had a positive effect on the density of egg deposits and the resulting year-class strength. Rates of warming were not themselves detrimental, but rather the extended length of the incubation period in cool springs increased the exposure of eggs to such negative influences as dislodgment from the spawning reefs by strong current action generated by spring storms, or siltation and low oxygen tensions. The annual brood stock size had much less influence on year-class strength than did water temperature. Reproductive success was unrelated to fluctuations in size of suitable reef spawning area caused by changes in water level. Apparently the usable spawning area at any water level is more than adequate to serve the limited walleye brood stocks.

Freshwater mussel community response to warm water discharge in western Lake Erie

2013 ◽  
Vol 39 (3) ◽  
pp. 449-454 ◽  
Author(s):  
Nick J. Bryan ◽  
Christina V. Florence ◽  
Todd D. Crail ◽  
Daryl L. Moorhead
Keyword(s):  
Lake Erie ◽  
Water Discharge ◽  
Freshwater Mussel ◽  
Community Response ◽  
Warm Water ◽  
Western Lake ◽  
Western Lake Erie

A novel method for tracking western Lake Erie Microcystis blooms, 2002–2011

2013 ◽  
Vol 39 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Thomas B. Bridgeman ◽  
Justin D. Chaffin ◽  
Jesse E. Filbrun
Keyword(s):  
Lake Erie ◽  
Western Lake ◽  
Microcystis Blooms ◽  
Novel Method ◽  
Western Lake Erie
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