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| Type: | Resource | |
| Storage: | The size of this resource is 22.5 KB | |
| Created: | Nov 05, 2024 at 3:52 p.m. | |
| Last updated: | Dec 10, 2024 at 3:33 p.m. | |
| Published date: | Dec 10, 2024 at 3:33 p.m. | |
| DOI: | 10.4211/hs.55478a4db09c4ade8882cc5d738487c5 | |
| Citation: | See how to cite this resource |
| Sharing Status: | Published |
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| Views: | 227 |
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Abstract
Excess Nitrate (N) and Phosphorus (P) in agricultural runoff can cause water quality issues like disproportionate eutrophication which can lead to depleted oxygen levels in water bodies. Implementation of Best Management Practices (BMPs) can help control the issue, however continuous monitoring and evaluation is essential to warrant a positive impact of the implemented BMPs. The objective of this 5-year (2014-2018) study was to compare the in-stream nutrient concentrations and load, both upstream and downstream with in a catchment that has high level of functioning BMPs. Linear Regression (LR) was used to assess temporal trends, and the significance of these trends was evaluated using the ANOVA analysis. The student's t-test was used for assessing spatial agreement/disagreement of the nutrient data. Results show that TSS load and concentration both are significantly higher downstream. Only monthly NO3-N concentration showed a significantly decreasing trend. The load of TSS (Upstream) and OP (Downstream) are significantly increasing for harvest season only. Overall, sediment and associated pollutants appear more sensitive to the intensity of rainfall in the late growing and harvest seasons. A more extended period of observed water quality and flow data are required to see any significant trend in phosphorus concentration.
Subject Keywords
Coverage
Spatial
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README.txt
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Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
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| Iowa Depatment of Natural Resources |
Contributors
People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.
| Name | Organization | Address | Phone | Author Identifiers |
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| Dr. Michelle Soupir | Iowa State University |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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