Evidence map›Paper›PMID 39979373›Full record

ArticleNature communications2025

Anthropogenic nutrient inputs cause excessive algal growth for nearly half the world's population.

Richard W McDowell, Dongwen Luo, Peter Pletnyakov, Martin Upsdell, Walter K Dodds

Abstract read
In one paragraph

Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–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

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
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

5 authors.

Richard W McDowellAgResearch, Lincoln Science Centre, Christchurch, New Zealand. Richard.mcdowell@agresearch.co.nz.ORCID http://orcid.org/0000-0003-3911-4825
Dongwen LuoAgResearch, Ruakura Research Centre, Hamilton, New Zealand.
Peter PletnyakovAgResearch, Lincoln Science Centre, Christchurch, New Zealand.
Martin UpsdellAgResearch, Ruakura Research Centre, Hamilton, New Zealand.
Walter K DoddsDivision of Biology, Kansas State University, Manhattan, KS, USA.ORCID http://orcid.org/0000-0002-6666-8930

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Reference conditions pertain to conditions without anthropogenic influence and serve to gauge the degree of river pollution and identify the best attainable water quality. Here we show estimates of the global human footprint of nitrogen and phosphorus concentrations and potential for related nuisance or harmful algal growth in rivers. We use statistical models based on 1.2 million stream nutrient measurements (from 2005 to 2013) and find global human enrichment of river total nitrogen and total phosphorus is 35% and 14% respectively. The greatest enrichment is in Europe (86 and 30% respectively) and the least in Oceania (9 and 2% respectively). The levels of enrichment translated into an almost doubling of the catchment areas with rivers predicted to have anthropogenically elevated levels of potentially harmful or nuisance algae, affecting ~40% of the world's population. Focusing management on the difference between current and reference conditions can help protect good water quality while avoiding unrealistic goals where nitrogen and phosphorus are naturally high.

Indexed as

Anthropogenic EffectsNitrogenNutrientsPhosphorusRiversWater Pollutants, ChemicalEnvironmental MonitoringEuropeHumansWater QualityNitrogenNutrientsPhosphorusWater Pollutants, Chemical

Identifiers

PMID39979373
PMCPMC11842711

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.