Evidence map›Paper›PMID 30196919›Full record

ArticleHarmful algae2018

Environmental factors influencing the quantitative distribution of microcystin and common potentially toxigenic cyanobacteria in U.S. lakes and reservoirs.

John R Beaver, Claudia E Tausz, Kyle C Scotese, Amina I Pollard, Richard M Mitchell

Abstract read
In one paragraph

Article in Harmful algae, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

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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

5 authors.

John R BeaverBSA Environmental Services Inc., 23400 Mercantile Road, Suite 8, Beachwood, OH, 44122 USA. Electronic address: j.beaver@bsaenv.com.
Claudia E TauszBSA Environmental Services Inc., 23400 Mercantile Road, Suite 8, Beachwood, OH, 44122 USA.
Kyle C ScoteseBSA Environmental Services Inc., 23400 Mercantile Road, Suite 8, Beachwood, OH, 44122 USA.
Amina I PollardU.S. Environmental Protection Agency, Office of Wetlands, Oceans and Watersheds, 1200 Pennsylvania Avenue (4503-T), Washington, DC, 20460-0001, USA.
Richard M MitchellU.S. Environmental Protection Agency, Office of Wetlands, Oceans and Watersheds, 1200 Pennsylvania Avenue (4503-T), Washington, DC, 20460-0001, USA.

Funding

Intramural EPA EPA999999
6 · The paper itself

Abstract

Many species of cyanobacteria are capable of producing toxins and causing nuisance blooms, however response to environmental conditions is likely taxon-specific. Environmental factors influencing cyanobacterial composition and toxin production in lakes have been examined in many studies; yet are often confined to individual water bodies, or to a small number of systems within the same region. Here, data from the 2012 USEPA National Lakes Assessment are used to examine relationships between biovolume of common potentially-toxigenic cyanobacteria (Aphanizomenon spp., Cylindrospermopsis spp., Dolichospermum spp., Microcystis spp. and Planktothrix spp.) and environmental variables across the entire conterminous United States, and results are compared across nine distinct ecoregions. Total phosphorus and water clarity were identified as the most influential environmental factors correlated with phytoplankton community composition. The Northern, Southern and Temperate Plains ecoregions displayed the highest biovolumes of potentially toxigenic taxa on average, as well as highest mean concentrations of microcystin. In those three ecoregions, samples with microcystin concentrations greater than 1 ppb were primarily dominated by Planktothrix spp. while in all other ecoregions Dolichospermum spp. was the dominant genus. Canonical Correlation Analysis revealed a strong association between high microcystin concentrations and high nutrient concentrations (total nitrogen and total phosphorus), and between high microcystin concentrations and low percentage of watershed forest cover. Results from this study indicate that the likely occurrence of potentially toxigenic taxa in lakes and reservoirs is predictable on a biogeographical basis, depending on morphological and water quality characteristics. Data from this study may be useful to regional managers attempting to prevent or mitigate nuisance cyanobacterial blooms.

Indexed as

Water ResourcesCyanobacteriaLakesMicrocystinsUnited StatesmicrocystinMicrocystinsCanonical correlation analysisEcoregionHarmful algal bloomsNational Lakes AssessmentPhytoplanktonWater quality

Identifiers

PMID30196919
PMCPMC6776996

What OpenQuestion holds

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Registered trials

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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.