The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Tracking Nonpoint Source Nitrogen Pollution in Human-Impacted Watersheds
Abstract
Nonpoint source nitrogen (N) pollution is a leading contributor to U.S. water quality impairments. We combined watershed N mass balances and stable isotopes to investigate fate and transport of nonpoint N in forest, agricultural, and urbanized watersheds at the Baltimore Long-Term Ecological Research site. Annual N retention was 55%, 68%, and 82% for agricultural, suburban, and forest watersheds, respectively. Analysis of δ(15)N-NO(3)(-), and δ(18)O-NO(3)(-) indicated wastewater was an important nitrate source in urbanized streams during baseflow. Negative correlations between δ(15)N-NO(3)(-) and δ(18)O-NO(3)(-) in urban watersheds indicated mixing between atmospheric deposition and wastewater, and N source contributions changed with storm magnitude (atmospheric sources contributed ∼50% at peak storm N loads). Positive correlations between δ(15)N-NO(3)(-) and δ(18)O-NO(3)(-) in watersheds suggested denitrification was removing septic system and agriculturally derived N, but N from belowground leaking sewers was less susceptible to denitrification. N transformations were also observed in a storm drain (no natural drainage network) potentially due to organic carbon inputs. Overall, nonpoint sources such as atmospheric deposition, wastewater, and fertilizer showed different susceptibility to watershed N export. There were large changes in nitrate sources as a function of runoff, and anticipating source changes in response to climate and storms will be critical for managing nonpoint N pollution.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Nonpoint Pollution of Surface Waters with Phosphorus and Nitrogen
Carpenter, S. R., Caraco, N. F., Correll, D. L., Howarth, R. W., Sharpley, A. N., & Smith, V. H. (1998) · Ecological Applications · doi:10.1890/1051-0761(1998)008[0559:nposww]2.0.co;2 · Cited by 6,099
Cited by
The urban watershed continuum: evolving spatial and temporal dimensions
Kaushal, S. S., & Belt, K. T. (2012) · Urban Ecosystems · doi:10.1007/s11252-012-0226-7 · Cited by 435
Self-citationThe cycle of nitrogen in river systems: sources, transformation, and flux
Xia, X., Zhang, S., Li, S., Zhang, L., Wang, G., Zhang, L., Wang, J., & Li, Z. (2018) · Environmental Science: Processes & Impacts · doi:10.1039/c8em00042e · Cited by 258
Pennino, M. J., McDonald, R. I., & Jaffe, P. R. (2016) · Science of The Total Environment · doi:10.1016/j.scitotenv.2016.05.101 · Cited by 156
Zhang, Y., Shi, P., Song, J., & Li, Q. (2018) · Applied Sciences · doi:10.3390/app9010018 · Cited by 121
Kaushal, S. S., Wood, K. L., Galella, J. G., Gion, A. M., Haq, S., Goodling, P. J., Haviland, K. A., Reimer, J. E., Morel, C. J., Wessel, B., et al. (2020) · Applied Geochemistry · doi:10.1016/j.apgeochem.2020.104632 · Cited by 96
Self-citation
Metadata
- Authors
- Kaushal, S. S., Groffman, P. M., Band, L. E., Elliott, E. M., Shields, C. A., & Kendall, C.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-09-02
- Volume
- 45
- Issue
- 19
- Pages
- 8225-8232
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2051965762
- Cited by
- 530
- References
- 1
- FWCI
- 15.91
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Tracking Nonpoint Source Nitrogen Pollution in Human-Impacted Watersheds. https://app.cochat.ai/papers/10.1021/es200779e
- The paper
- Kaushal, S. S., Groffman, P. M., Band, L. E., Elliott, E. M., Shields, C. A., & Kendall, C. (2011). Tracking Nonpoint Source Nitrogen Pollution in Human-Impacted Watersheds. Environmental Science & Technology. https://doi.org/10.1021/es200779e
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
