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. 2021 Jan 25;12:570. doi: 10.1038/s41467-020-20627-w

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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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — P_min concentration in particulates plotted against a total organic carbon (TOC), b total nitrogen (TN), c organic phosphorus (P_org), and d molar C:N:P_org ratio normalized to the Redfield ratio (C:N:P 106:16:1). Linear regression and r-values (Pearson’s product-moment correlation) correspond to all data points from all sites (gray dots). e Relative mineral and organic matter abundances across the ablation zone, including hydroxylapatite (bright yellow); f major cation concentrations in meltwater from H_bio ice across the ablation zone. H_bio ice: high algal biomass ice; DCC ice: dispersed cryoconite ice; CCH: cryoconite hole. In a–d: colored points: mean values for different sites, habitats, and years, ±SE (2016: solid fill; 2017: white-fill); solid line: linear regression; thin dashed lines: 95% confidence interval. Site 2 H_bio ice n = 1; Site 3 H_bio ice n = 2; Site 3 H_bio snow n = 1; Site 4a H_bio ice n = 5; Site 4a DCC ice n = 2; Site 4b H_bio ice n = 2; Site 4b DCC ice n = 1; Site 4b CCH n = 1; Site 5 H_bio ice n = 1. In e: H_bio ice: site 5: n = 1; site 4a n = 5; site 4b: n = 4; site 3: n = 2; site 2 n = 1; DCC ice: site 4a n = 4; site 4b n = 1; CCH site 4b n = 1. In f: site 5 n = 6; site 4a n = 5; site 4b n = 3; site 3 n = 2; site 2 n = 1.