Mycorrhizal fungi take up and store salmon nitrogen

Mycorrhizal fungi take up and store salmon nitrogen | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 8 January 2026 V1 Latest version Share on Mycorrhizal fungi take up and store salmon nitrogen Authors : Anne Polyakov 0000-0002-3002-3946 [email protected] , Erik A. Hobbie , Gordon Holtgrieve 0000-0002-4451-3567 , Allen Larocque , Erik Lilleskov , Korena K. Mafune , Kristiina A. Vogt , Daniel J. Vogt , and Andrew M. Berdahl Authors Info & Affiliations https://doi.org/10.22541/au.176790747.76111523/v1 113 views 128 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Pacific salmon deliver marine-derived nitrogen (MDN) to terrestrial ecosystems, influencing riparian soils, plants, and animals. However, the role of soil fungi in retaining MDN has received little attention despite their importance in nutrient cycling. We investigated MDN incorporation into fungi, trees, and soils along three salmon streams in southwest Alaska, including one with a 21-year carcass addition/removal experiment. We measured carbon and nitrogen concentrations and stable isotope ratios (δ¹⁵N, δ¹³C) across ecosystem pools. MDN was detected in soils, vegetation, and ectomycorrhizal fungal (EMF) sporocarps, with up to 27% of fungal nitrogen derived from MDN. MDN also increased total nitrogen concentrations in EMF, indicating preferential storage. These results for the first time identify EMF as a major MDN sink and highlight fungi as a critical, previously underappreciated link in salmon–forest nutrient dynamics. Supplementary Material File (polyakov et al- main manuscript.pdf) Download 827.79 KB Information & Authors Information Version history V1 Version 1 08 January 2026 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords ectomycorrhizal fungi isotope biogeochemistry nutrient cycling riparian systems salmon derived nitrogen Authors Affiliations Anne Polyakov 0000-0002-3002-3946 [email protected] View all articles by this author Erik A. Hobbie View all articles by this author Gordon Holtgrieve 0000-0002-4451-3567 View all articles by this author Allen Larocque View all articles by this author Erik Lilleskov View all articles by this author Korena K. Mafune View all articles by this author Kristiina A. Vogt View all articles by this author Daniel J. Vogt View all articles by this author Andrew M. Berdahl View all articles by this author Metrics & Citations Metrics Article Usage 113 views 128 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Anne Polyakov, Erik A. Hobbie, Gordon Holtgrieve, et al. Mycorrhizal fungi take up and store salmon nitrogen. Authorea . 08 January 2026. 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