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. 2021 Feb 12;11:3696. doi: 10.1038/s41598-021-82784-2

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Heatmap showing the Potential Number of People Fed (PNPF) per ha per year (numbers in the cells) considering the recommended daily allowances for key human nutrients, for a range of milpa systems in the Western Highlands of Guatemala. Crop associations codes are: M-P: Maize-Potato, M-B-S: Maize-Bean-Squash, M-B-P: Maize-Bean-Potato, M-B: Maize-Bean, M-F: Maize-Faba, M: Maize monocrop, M-S: Maize-Squash, M-B-F: Maize-Bean-Faba. The colour-code denotes a gradient (of scaled PNPF values) from high PNPF in green to low PNPF in red, crop associations and nutrients are clustered in a dendrogram (in black to the left and top respectively) according to the PNPF values (Created using heatmap.2 function from the R package gplots -http://cran.r-project.org/web/packages/gplots/index.html).