Evidence map›Paper›PMID 28138547›Full record

ArticleScience advances2017

Terrestrial discharges mediate trophic shifts and enhance methylmercury accumulation in estuarine biota.

Sofi Jonsson, Agneta Andersson, Mats B Nilsson, Ulf Skyllberg, Erik Lundberg, Jeffra K Schaefer, Staffan Åkerblom, Erik Björn

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
8.0field-weighted citation impact, top 2% of its field
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

23 citing papers in PubMed, 120 citations in OpenAlex.

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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

8 authors at 3 institutions in 2 countries.

Sofi JonssonDepartment of Chemistry, Umeå University, SE-901 87 Umeå, Sweden.; Umeå Marine Sciences Centre, Umeå University, SE-910 20 Hörnefors, Sweden.
Agneta AnderssonUmeå Marine Sciences Centre, Umeå University, SE-910 20 Hörnefors, Sweden.; Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden.
Mats B NilssonDepartment of Forest Ecology and Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden.
Ulf SkyllbergDepartment of Forest Ecology and Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden.ORCID 0000-0001-6939-8799
Erik LundbergUmeå Marine Sciences Centre, Umeå University, SE-910 20 Hörnefors, Sweden.
Jeffra K SchaeferDepartment of Environmental Sciences, Rutgers University, New Brunswick, NJ 08901, USA.
Staffan ÅkerblomDepartment of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden.
Erik BjörnDepartment of Chemistry, Umeå University, SE-901 87 Umeå, Sweden.
Umeå University · SESwedish University of Agricultural Sciences · SERutgers, The State University of New Jersey · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The input of mercury (Hg) to ecosystems is estimated to have increased two- to fivefold during the industrial era, and Hg accumulates in aquatic biota as neurotoxic methylmercury (MeHg). Escalating anthropogenic land use and climate change are expected to alter the input rates of terrestrial natural organic matter (NOM) and nutrients to aquatic ecosystems. For example, climate change has been projected to induce 10 to 50% runoff increases for large coastal regions globally. A major knowledge gap is the potential effects on MeHg exposure to biota following these ecosystem changes. We monitored the fate of five enriched Hg isotope tracers added to mesocosm scale estuarine model ecosystems subjected to varying loading rates of nutrients and terrestrial NOM. We demonstrate that increased terrestrial NOM input to the pelagic zone can enhance the MeHg bioaccumulation factor in zooplankton by a factor of 2 to 7 by inducing a shift in the pelagic food web from autotrophic to heterotrophic. The terrestrial NOM input also enhanced the retention of MeHg in the water column by up to a factor of 2, resulting in further increased MeHg exposure to pelagic biota. Using mercury mass balance calculations, we predict that MeHg concentration in zooplankton can increase by a factor of 3 to 6 in coastal areas following scenarios with 15 to 30% increased terrestrial runoff. The results demonstrate the importance of incorporating the impact of climate-induced changes in food web structure on MeHg bioaccumulation in future biogeochemical cycling models and risk assessments of Hg.

Indexed as

BiotaFood ChainModels, BiologicalAnimalsMethylmercury CompoundsZooplanktonMethylmercury Compoundsbioaccumulationmethylmercurypelagic food webterrestrial dischargetrophic shift

Identifiers

PMID28138547
PMCPMC5271591
OpenAlexW2581807008

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.