Urban heterogeneity drives dissolved organic matter sources, transport, and transformation from local to macro scales

Rebecca Hale; Kristina G. Hopkins; Krista A. Capps; John S. Kominoski; Jennifer L. Morse; Allison H. Roy; Shuo Chen; Annika Quick; Andrew Blinn; Liz Ortiz Muñoz; Gwendolynn Folk

doi:10.1002/lno.70201

Urban heterogeneity drives dissolved organic matter sources, transport, and transformation from local to macro scales

Limnology and Oceanography

By: Rebecca Hale, Kristina G. Hopkins, Krista A. Capps, John S. Kominoski, Jennifer L. Morse, Allison H. Roy, Shuo Chen, Annika Quick, Andrew Blinn, Liz Ortiz Muñoz, and Gwendolynn Folk

https://doi.org/10.1002/lno.70201

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Abstract

Urbanization reshapes dissolved organic matter (DOM) sources, transport, and transformations through changes in vegetation, hydrology, and management of waste and water. Yet the impacts of urbanization on DOM are variable within and among cities. Predicting heterogeneous responses to urbanization is challenged by diverse human activities and underlying biophysical variation along stream networks. Using data from the 486 largest urban areas in the continental United States and seven focal cities, we identified macro and local scale urban gradients in social, built, and biophysical factors that are expected to shape DOM. We used these gradients and the literature to develop hypotheses about heterogeneity in DOM quantity and quality within and among cities. Interactions among landscape and infrastructure attributes across spatial and temporal scales result in heterogeneous responses in DOM. Characterizing and quantifying these inconsistent responses to urbanization in contrasting settings may help to better understand heterogeneity and identify generalities among urban watersheds.

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Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Urban heterogeneity drives dissolved organic matter sources, transport, and transformation from local to macro scales
Series title	Limnology and Oceanography
DOI	10.1002/lno.70201
Volume	70
Issue	11
Publication Date	September 09, 2025
Year Published	2025
Language	English
Publisher	Association for the Sciences of Limnology and Oceanography
Contributing office(s)	Washington Water Science Center
Description	18 p.
First page	3109
Last page	3125
Country	United States
Other Geospatial	continental United States