Assessment and Compilation of Water Quality Data for a Water Quality Model of Lake Erie over a Decadal Time Period

Lake Erie;Water Quality Model;Natural Resources and Environment

Cain, LindsayZhang, Hongyan ;

University of Michigan

关键词: Lake Erie;    Water Quality Model;    Natural Resources and Environment;   

Others  :  https://deepblue.lib.umich.edu/bitstream/handle/2027.42/94536/Input%20Data%20Attachment.xlsx?sequence=2&isAllowed=y

瑞士|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

Lake Erie has been facing ecological impacts due in part to human activities. Over the past several decades the lake has been impacted by pollution, habitat destruction and alterations, and invasive species. Excessive phosphorus loading from both point and nonpoint sources created huge changes in productivity since the 1960s. Lake Erie also suffered from strong Microcystis blooms, which in turn has impacted drinking water, lake production, and fauna. In addition, the introduction of invasive dreissenid mussels in 1986 caused further impacts to system processes. This project compiles input data from 2010 for a two-dimensional water quality model that simulates the impacts of many of these stressors on Lake Erie water quality. Data from 2010 were compared with those of 1998, for which year the model was last calibrated in a previous study by Zhang (2006). A major change between the two time periods was an increase in the annual tributary phosphorus loads to Lake Erie. There was also a resulting increase in within lake phosphorus concentrations and a decrease in within lake nitrogen levels. Discussion of the use of the model was provided; however, actual model runs with the newer 2010 data were not completed due to project time constraints.