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Ecological effects of nitrogen and sulfur air pollution in the US: what do we know?

Frontiers in Ecology and the Environment

By:
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DOI: 10.1890/110049

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Abstract

Four decades after the passage of the US Clean Air Act, air-quality standards are set to protect ecosystems from damage caused by gas-phase nitrogen (N) and sulfur (S) compounds, but not from the deposition of these air pollutants to land and water. Here, we synthesize recent scientific literature on the ecological effects of N and S air pollution in the US. Deposition of N and S is the main driver of ecosystem acidification and contributes to nutrient enrichment in many natural systems. Although surface-water acidification has decreased in the US since 1990, it remains a problem in many regions. Perturbations to ecosystems caused by the nutrient effects of N deposition continue to emerge, although gas-phase concentrations are generally not high enough to cause phytotoxicity. In all, there is overwhelming evidence of a broad range of damaging effects to ecosystems in the US under current air quality conditions.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Ecological effects of nitrogen and sulfur air pollution in the US: what do we know?
Series title:
Frontiers in Ecology and the Environment
DOI:
10.1890/110049
Volume
10
Issue:
7
Year Published:
2012
Language:
English
Publisher:
ESA
Publisher location:
Ithaca, NY
Contributing office(s):
Fort Collins Science Center
Description:
8 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Frontiers in Ecology and the Environment
First page:
365
Last page:
372
Country:
United States