Evidence map›Paper›PMID 33850516›Full record

ArticleEnvironmental research letters : ERL [Web site]2020

Trading water: virtual water flows through interstate cereal trade in India.

Francesca Harris, Carole Dalin, Soledad Cuevas, N R Lakshmikantha, Tapan Adhya, Edward J M Joy, Pauline F D Scheelbeek, Benjamin Kayatz, Owen Nicholas, Bhavani Shankar and 2 more

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In one paragraph

Article in Environmental research letters : ERL [Web site], 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

12 authors.

Francesca HarrisDepartment of Population Health, London School of Hygiene & Tropical Medicine, Keppel Street, London, UK.
Carole DalinInstitute for Sustainable Resources, Bartlett School of Environment, Energy and Resources, University College London, UK.
Soledad CuevasCentre for Development, Environment and Policy, School of Oriental & African Studies, London.
N R LakshmikanthaAshoka Trust for Research in Ecology and the Environment, Bengaluru, India.
Tapan AdhyaKalinga Institute of Industrial Technology (Deemed University), Bhubaneswar, India.
Edward J M JoyDepartment of Population Health, London School of Hygiene & Tropical Medicine, Keppel Street, London, UK.
Pauline F D ScheelbeekDepartment of Population Health, London School of Hygiene & Tropical Medicine, Keppel Street, London, UK.
Benjamin KayatzHelmholtz Centre Potsdam German Research Centre for Geosciences, Potsdam, Germany.
Owen NicholasUniversity College London, Department of Statistical Science, London, UK.
Bhavani ShankarInstitute for Sustainable Food & Department of Geography, University of Sheffield, UK.
Alan D DangourDepartment of Population Health, London School of Hygiene & Tropical Medicine, Keppel Street, London, UK.
Rosemary GreenDepartment of Population Health, London School of Hygiene & Tropical Medicine, Keppel Street, London, UK.

Funding

Wellcome Trust 103932Wellcome Trust 201790
6 · The paper itself

Abstract

Cereals are an important component of the Indian diet, providing 47% of the daily dietary energy intake. Dwindling groundwater reserves in India especially in major cereal-growing regions are an increasing challenge to national food supply. An improved understanding of interstate cereal trade can help to identify potential risks to national food security. Here, we quantify the trade between Indian states of five major cereals and the associated trade in virtual (or embedded) water. To do this, we modelled interstate trade of cereals using Indian government data on supply and demand; calculated virtual water use of domestic cereal production using state- and product-specific water footprints and state-level data on irrigation source; and incorporated virtual water used in the production of internationally-imported cereals using country-specific water footprints. We estimate that 40% (94 million tonnes) of total cereal food supply was traded between Indian states in 2011-12, corresponding to a trade of 54.0 km

Identifiers

PMID33850516
PMCPMC7610577

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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.