Jim Jawitz

About

James W. Jawitz is a professor in the Department of Soil, Water, and Ecosystem Sciences at the University of Florida, within the Institute of Food and Agricultural Sciences. His research emphasizes minimizing human impacts on natural hydrologic ecosystems, including watersheds, wetlands, and aquifers. He develops and applies hydro-ecological models to natural and constructed wetlands and works on techniques for the characterization and remediation of contaminated soil and groundwater. His work integrates water quality and watershed management, hydrology, and critical zone science, with a focus on understanding and improving water resource sustainability and ecosystem health.

Research topics

• Ecology
• Environmental science
• Geology
• Biology
• Geography
• Computer Science
• Geotechnical engineering
• Statistics
• Soil science
• Cartography

Selected publications

• Strong hydroclimatic controls on vulnerability to subsurface nitrate contamination across Europe

  Nature Communications · 2020 · 86 citations

  Subsurface contamination due to excessive nutrient surpluses is a persistent and widespread problem in agricultural areas across Europe. The vulnerability of a particular location to pollution from reactive solutes, such as nitrate, is determined by the interplay between hydrologic transport and biogeochemical transformations. Current studies on the controls of subsurface vulnerability do not consider the transient behaviour of transport dynamics in the root zone. Here, using state-of-the-art hy…

  DOI

• Theoretical and empirical evidence against the Budyko catchment trajectory conjecture

  Hydrology and earth system sciences · 2022 · 58 citations

  Senior authorCorresponding

  Abstract. The Budyko framework posits that a catchment's long-term mean evapotranspiration (ET) is primarily governed by the availabilities of water and energy, represented by long-term mean precipitation (P) and potential evapotranspiration (PET), respectively. This assertion is supported by the distinctive clustering pattern that catchments take in Budyko space. Several semi-empirical, nonparametric curves have been shown to generally represent this clustering pattern but cannot explain deviat…

  DOI

• Seasonal dynamics of terrestrially sourced nitrogen influenced Karenia brevis blooms off Florida's southern Gulf Coast

  Harmful Algae · 2020 · 41 citations

  DOI

• Divergence Between Long‐Term and Event‐Scale Nitrate Export Patterns

  Geophysical Research Letters · 2024-05-23 · 18 citations

  articleOpen access

  Abstract The mechanisms driving catchment nitrogen storage and release operate at multiple spatiotemporal scales. Consequently, analyses grounded in different observational timescales can yield discrepant interpretations of underlying mechanisms. To assess the consistency of nitrate export patterns between event‐ and inter‐annual scales, we evaluated multiple years of high‐frequency observations of nitrate concentrations (C) and discharge (Q) including 3,480 discrete discharge events from 28 dom…

  PublisherOA PDFDOI

• Disaggregating Landscape‐Scale Nitrogen Attenuation Along Hydrological Flow Paths

  Journal of Geophysical Research Biogeosciences · 2020 · 16 citations

  1st authorCorresponding

  Abstract Evaluating how nitrogen (N) sources are attenuated throughout the landscape is critical to further our understanding of catchment‐scale N budgets. We developed a catchment‐scale N budget for a mixed land use karst springshed using in situ measurements (nitrate leaching fluxes and attenuation) and long‐term records (surface N inputs and spring exports) to estimate 20‐year average landscape‐scale N loading, attenuation, and export. We introduce a conceptual model framework to compute N ex…

  PublisherDOI

Recent grants

• EAR-Climate: Continental-Scale Determinants of Stream Solute Spatial and Temporal Patterns

  NSF · $428k · 2023–2026

Frequent coauthors

• Michael D. Annable

  76 shared

• P. Suresh C. Rao

  Purdue University West Lafayette

  55 shared

• Harald Klammler

  Universidade Federal da Bahia

  39 shared

• Dietrich Borchardt

  Helmholtz Centre for Environmental Research

  30 shared

• Matthew J. Cohen

  University of Florida

  26 shared

• Kirk Hatfield

  University of Florida

  24 shared

• N. B. Basu

  16 shared

• J. Padowski

  Washington State University

  15 shared

Education

• PhD, Environmental Engineering

  University of Florida

  1999

Similar researchers at University of Florida

• Sabine Grunwaldh-48
• Stefan Gerberh-43
• Vimala Nairh-40