This readme.txt file was generated on 2024-02-19 by Talia Michaud Recommended citation for the data: Michaud, Talia J; Hobbie, Erik A; Kennedy, Peter G. (2024). Data from: Carbon cycling through plant and fungal herbarium specimens tracks the Suess effect over more than a century of environmental change. Retrieved from the Data Repository for the University of Minnesota. https://doi.org/10.13020/DCC7-6R87. ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: Data from: Carbon cycling through plant and fungal herbarium specimens tracks the Suess effect over more than a century of environmental change 2. Author Information Author Contact: Talia J Michaud (micha938@umn.edu) Name: Talia J Michaud Institution: Email: micha938@umn.edu ORCID: 0000-0002-7295-6808 Name: Erik A Hobbie Institution: University of New Hampshire Email: erik.hobbie@unh.edu ORCID: Name: Peter G Kennedy Institution: University of Minnesota Email: kennedyp@umn.edu ORCID: 3. Date published or finalized for release: 2024-02-19 4. Date of data collection (single date, range, approximate date): 1877 to 2019 5. Geographic location of data collection (where was data collected?): Minnesota, USA 6. Information about funding sources that supported the collection of the data: NSF DEB grant (2019518) NSF RUBC Postdoctoral Fellowship (1611856) 7. Overview of the data (abstract): Although the anthropogenic decline in atmospheric carbon stable isotope ratios (d13C) over the last 150 years (termed the Suess effect) is well-studied, how different terrestrial trophic levels and modes reflect this decline remains unresolved. To evaluate the Suess effect as an opportunistic tracer of terrestrial forest carbon cycling, this study analyzed the d13C in herbarium specimens collected in Minnesota, USA from 1877-2019. Our results suggest that both broadleaf trees and ectomycorrhizal fungi relied on recent photosynthate to produce leaves and sporocarps, while saprotrophic fungi used carbon fixed from the atmosphere 32-55 years ago for sporocarp construction. The d13C values of saprotrophic fungal collections were also sensitive to the age of their plant C substrate, with sporocarps of twig specialists tracking changes in atmospheric d13C more closely than saprotrophs growing on wood. Collectively, this study indicated that natural history collections can quantitatively track carbon cycling among plants and fungi over time. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Attribution-NonCommercial 3.0 United States (http://creativecommons.org/licenses/by-nc/3.0/us/) 2. Links to publications that cite or use the data: Forthcoming. 3. Was data derived from another source? NA If yes, list source(s): 4. Terms of Use: Data Repository for the U of Minnesota (DRUM) By using these files, users agree to the Terms of Use. https://conservancy.umn.edu/pages/drum/policies/#terms-of-use --------------------- DATA & FILE OVERVIEW --------------------- File List File name: d13C_data Description: d13C values generated from herbarium specimens collected in Minnesota, USA from 1877 to 2019. File includes the catalog number associated with the collection, the group (Sap = saprotrophic fungus, Ecto = ectomycorrhizal fungus, Plant = plant) the collection belongs to, its species, genus, the year, month, and county it was collected in, and for saprotrophic fungi, the substrate (substrateRed) it grows on. -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Air-dried foliar and sporocarp tissues were ground, packed at a mass of 1.2 ± 0.05 mg to the nearest 0.001 mg, then analyzed via an Elementar Vario Pyrocube (Hanau, Germany) interfaced to an Isoprime 100 isotope ratio mass spectrometer (Cheadle, UK) at the University of Minnesota, an Elementar Vario EL Cube interfaced to a PDZ Europa 20-20 isotope ratio mass spectrometer (Sercon Ltd., Cheshire, UK) at the University of California-Davis Stable Isotope Facility, or an Elementar Cube elemental analyzer inferfaced to a GV Instuments Isoprime isotope ratio mass spectrometer (Manchester, UK) at Boston University Stable Isotope Laboratory. 2. Methods for processing the data: NA 3. Instrument- or software-specific information needed to interpret the data: NA 4. Standards and calibration information, if appropriate: NA 5. Environmental/experimental conditions: NA 6. Describe any quality-assurance procedures performed on the data: NA 7. People involved with sample collection, processing, analysis and/or submission: Lauren Cline, Henry Oakes, Talia Michaud ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: d13C_data.xls ----------------------------------------- 1. Number of variables: 9 2. Number of cases/rows: 561 3. Missing data codes: Code/symbol NA Definition missing 4. Variable List A. Name: catalogNumber Description: catalog number associated with the collection B. Name: group Description: the group (Sap = saprotrophic fungus, Ecto = ectomycorrhizal fungus, Plant = plant) the collection belongs to C. Name: Species Description: Binomial name of collection D. Name: Genus Description: Genus of collection E. Name: d13C Description: d13C value generated from specimen (permille) F. Name: year Description: year collection was made G. Name: month Description: month collection was made H. Name: county Description: county in which collection was made I. Name: substrateRed Description: for saprotrophic fungi, the substrate the fungus is specific to