Evidence map›Paper›PMID 29714821›Full record

ArticleEcological applications : a publication of the Ecological Society of America2018

Atmospheric deposition and exceedances of critical loads from 1800-2025 for the conterminous United States.

Christopher M Clark, Jennifer Phelan, Prakash Doraiswamy, John Buckley, James C Cajka, Robin L Dennis, Jason Lynch, Christopher G Nolte, Tanya L Spero

Abstract readHistorical Article
In one paragraph

Article in Ecological applications : a publication of the Ecological Society of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  5. Developing spatially explicit critical loads for herbaceous species across the United States using convex hulls.Ecological applications : a publication of the Ecological Society of America · 2025
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  16. Impact of multiple small and persistent threats on extinction risk.Conservation biology : the journal of the Society for Conservation Biology · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Christopher M ClarkNational Center for Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency (8623-P), 1200 Pennsylvania Avenue NW, Washington, D.C., 20460, USA.
Jennifer PhelanRTI International, 3040 East Cornwallis Road, P.O. Box 12194, Research Triangle Park, North Carolina, 27709, USA.
Prakash DoraiswamyRTI International, 3040 East Cornwallis Road, P.O. Box 12194, Research Triangle Park, North Carolina, 27709, USA.
John BuckleyRTI International, 3040 East Cornwallis Road, P.O. Box 12194, Research Triangle Park, North Carolina, 27709, USA.
James C CajkaRTI International, 3040 East Cornwallis Road, P.O. Box 12194, Research Triangle Park, North Carolina, 27709, USA.
Robin L DennisNational Exposure Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, 27709, USA.
Jason LynchOffice of Atmospheric Programs, U.S. Environmental Protection Agency, 1200 Pennsylvania Ave NW, Washington, D.C., 20460, USA.
Christopher G NolteNational Exposure Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, 27709, USA.
Tanya L SperoNational Exposure Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, 27709, USA.

Funding

Intramural EPA EPA999999
6 · The paper itself

Abstract

Atmospheric deposition of nitrogen (N) and sulfur (S) has increased dramatically over pre-industrial levels, with many potential impacts on terrestrial and aquatic ecosystems. Quantitative thresholds, termed "critical loads" (CLs), have been developed to estimate the deposition rate above which damage is thought to occur. However, there remains no comprehensive comparison of when, where, and over what time periods individual CLs have been exceeded. We addressed this knowledge gap by combining several published data sources for historical and contemporary deposition, and overlaying these on six CL types from the National Critical Loads Database (NCLDv2.5; terrestrial acidification, aquatic acidification, lichen, nitrate leaching, plant community composition, and forest-tree health) to examine exceedances from 1800 to 2011. We expressed CLs as the minimum, 10th, and 50th percentiles within 12-km grid cells. Minimum CLs were relatively uniform across the country (200-400 eq·ha

Indexed as

Nitrogen CycleSulfur OxidesAir PollutionAmmoniaHistory, 19th CenturyHistory, 20th CenturyHistory, 21st CenturyNitrogen OxidesUnited StatesAmmoniaNitrogen OxidesSulfur Oxidesair qualityatmospheric depositioncritical loadsexceedancesnitrogensulfur

Identifiers

PMID29714821
PMCPMC8637495

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.