A Coherent Signature of Anthropogenic Nitrogen Deposition to Remote Watersheds of the Northern Hemisphere

W. Holtgrieve, Gordon; E. Schindler, Daniel; O. Hobbs, William; R. Leavitt, Peter; J. Ward, Eric; Bunting, Lynda; Chen, Guangjie; P. Finney, Bruce; Gregory‐Eaves, Irene; Holmgren, Sofia; J. Lisac, Mark; J. Lisi, Peter; R. Nydick, Koren; A. Rogers, Lauren; E. Saros, Jasmine; T. Selbie, Daniel; D. Shapley, Mark; Walsh, Patrick; P. Wolfe, Alexander

doi:10.1126/science.1212267

Public

A Coherent Signature of Anthropogenic Nitrogen Deposition to Remote Watersheds of the Northern Hemisphere

Published in Science • Dec 15, 2011

Authors:

Gordon W. Holtgrieve

Daniel E. Schindler

William O. Hobbs

Abstract

Humans have more than doubled the amount of reactive nitrogen (Nr) added to the biosphere, yet most of what is known about its accumulation and ecological effects is derived from studies of heavily populated regions. Nitrogen (N) stable isotope ratios ((15)N:(14)N) in dated sediments from 25 remote ...

Subject

Signature (topology)

Deposition (geology)

Northern Hemisphere

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