E
Elizabeth W. Boyer
Researcher at Pennsylvania State University
Publications - 119
Citations - 19801
Elizabeth W. Boyer is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Streamflow & Nitrate. The author has an hindex of 46, co-authored 112 publications receiving 17645 citations. Previous affiliations of Elizabeth W. Boyer include United States Geological Survey & State University of New York System.
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Journal ArticleDOI
Nitrogen cycles: past, present, and future
James N. Galloway,Frank Dentener,Douglas G. Capone,Elizabeth W. Boyer,Robert W. Howarth,Sybil P. Seitzinger,G. P. Asner,Cory C. Cleveland,P. A. Green,Elisabeth A. Holland,David M. Karl,Anthony F. Michaels,John H. Porter,Alan R. Townsend,Charles J. Vörösmarty +14 more
TL;DR: In this paper, the authors compared the natural and anthropogenic controls on the conversion of unreactive N2 to more reactive forms of nitrogen (Nr) and found that human activities increasingly dominate the N budget at the global and at most regional scales, and the terrestrial and open ocean N budgets are essentially dis-connected.
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Spectrofluorometric characterization of dissolved organic matter for indication of precursor organic material and aromaticity
Diane M. McKnight,Elizabeth W. Boyer,Paul Westerhoff,Peter T. Doran,Thomas Kulbe,Dale T. Andersen +5 more
TL;DR: In this article, the authors studied the fluorescence properties of fulvic acids isolated from streams and rivers receiving predominantly terrestrial sources of organic material and from lakes with microbial sources, and showed that the ratio of the emission intensity at a wavelength of 450 nm to that at 500 nm, obtained with an excitation of 370 nm, can serve as a simple index to distinguish sources of isolated aquatic fulvic acid.
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Biogeochemical Hot Spots and Hot Moments at the Interface of Terrestrial and Aquatic Ecosystems
Michael E. McClain,Elizabeth W. Boyer,C. Lisa Dent,Sarah E. Gergel,Nancy B. Grimm,Peter M. Groffman,Stephen C. Hart,Judson W. Harvey,Carol A. Johnston,Emilio Mayorga,William H. McDowell,Gilles Pinay +11 more
TL;DR: In this paper, the authors define biogeochemical hot spots as patches that show disproportionately high reaction rates relative to the surrounding matrix, whereas hot moments occur when episodic hydrological flowpaths reactivate and/or mobilize accumulated reactants.
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Differences in phosphorus and nitrogen delivery to the Gulf of Mexico from the Mississippi River Basin.
Richard B. Alexander,Richard A. Smith,Gregory E. Schwarz,Elizabeth W. Boyer,Jacqueline V. Nolan,John W. Brakebill +5 more
TL;DR: A spatially explicit and structurally detailed SPARROW water-quality model reveals important differences in the sources and transport processes that control nitrogen (N) and phosphorus (P) delivery to the Gulf of Mexico and indicates the diversity of management approaches required to achieve efficient control of nutrient loads.
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The Role of Headwater Streams in Downstream Water Quality
Richard B. Alexander,Elizabeth W. Boyer,Richard A. Smith,Gregory E. Schwarz,Richard B. Moore +4 more
TL;DR: This work reviews current watershed research and uses a water-quality model to investigate headwater influences on downstream receiving waters, and applies the spatially explicit, mass-balance watershed model SPARROW to consider transport and transformations of water and nutrients throughout stream networks in the northeastern United States.