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Related Experiment Video

Updated: Sep 28, 2025

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors
07:59

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nsink: An R package for flow path nitrogen removal estimation.

Jeffrey W Hollister1, Dorothy Q Kellogg2, Qian Lei-Parent3

  • 1U. S. Environmental Protection Agency, Atlantic Coastal Environmental Sciences Division, Narragansett, RI 02882.

Journal of Open Source Software
|March 31, 2022
PubMed
Summary
This summary is machine-generated.

The nsink package quantifies cumulative nitrogen removal in watersheds. It automates data retrieval and analysis for nitrogen reduction estimations, providing valuable insights for water quality management.

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Related Experiment Videos

Last Updated: Sep 28, 2025

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Area of Science:

  • Environmental Science
  • Hydrology
  • Water Quality Management

Background:

  • Nitrogen (N) pollution poses a significant threat to aquatic ecosystems and water quality.
  • Accurate estimation of nitrogen removal is crucial for effective watershed management and mitigation strategies.

Purpose of the Study:

  • To introduce and describe the nsink R package for estimating cumulative nitrogen removal.
  • To provide a user-friendly tool for analyzing nitrogen dynamics within specified flow paths in watersheds.

Main Methods:

  • The nsink package utilizes methodologies from Kellogg et al. (2010).
  • It automates the download of necessary datasets from public sources within the United States.
  • Data preparation, N removal summarization along flow paths, and map generation are integrated functionalities.

Main Results:

  • The package successfully estimates cumulative nitrogen removal for user-defined watersheds (hydrologic unit code - HUC).
  • It generates static maps visualizing nitrogen removal patterns.
  • Analysis results can be exported to standard geospatial file formats for further use.

Conclusions:

  • The nsink package offers a streamlined and efficient approach to assessing watershed nitrogen removal.
  • It empowers users to analyze and visualize nitrogen dynamics, supporting informed water quality decisions.
  • The tool's integration with geospatial applications enhances its utility for environmental management.