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  • SOM density fractions beneath trees of different mycorrhizal types in New England forests
  • Lang, Ashley K; Indiana University
    Jevon, Fiona V; Yale University
    Fitch, Amelia A; Dartmouth College
    Hatala Matthes, Jaclyn; Wellesley College
    Ayres, Matthew P; Dartmouth College
    Hicks Pries, Caitlin E; Dartmouth College
  • 2021-06-24
  • Lang, A.K., F.V. Jevon, A.A. Fitch, J. Hatala Matthes, M.P. Ayres, and C.E. Hicks Pries. 2021. SOM density fractions beneath trees of different mycorrhizal types in New England forests ver 30. Environmental Data Initiative. https://doi.org/DOI_PLACE_HOLDER (Accessed 2024-12-28).

  • Recent work suggests mycorrhizal fungi are important drivers of soil organic matter dynamics; however, whether this is a result of the fungi themselves or related traits of their host trees remains unclear. We evaluated how tree mycorrhizal associations and foliar chemistry influence mineral-associated organic matter (MAOM) and particulate organic matter (POM) in temperate forests of northern New England, USA. We measured carbon (C) and nitrogen (N) concentrations and C:N of three soil density fractions beneath six tree species that vary in both mycorrhizal association and foliar chemistry. We found a significant decline in the concentration of MAOM C and N with increasing foliar C:N in soil beneath tree species with arbuscular mycorrhizal (AM), but not ectomycorrhizal (ECM) fungi. The C:N of POM and MAOM was positively associated with the foliar C:N of the dominant tree species in a forest, and MAOM C:N was also higher beneath ECM- rather than AM-associated tree species. These results add to the growing body of support for mycorrhizal fungi as predictors of soil C and N dynamics, and suggest that C concentration in the MAOM fraction is more sensitive to organic matter chemistry beneath AM-associated tree species. Because MAOM decomposition is thought to be less responsive than POM decomposition to changes in soil temperature and moisture, differences in the tendency of AM- vs. ECM-dominated forests to support MAOM formation and persistence may lead to systematic differences in the response of these forest types to ongoing climate change.

    These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.

  • Geographic Coordinates
    • N: 43.944625, S: 43.944625, E: -71.716599, W: -71.716599
    • N: 44.080278, S: 44.080278, E: -72.32, W: -72.32
    • N: 44.621119, S: 44.621119, E: -72.264148, W: -72.264148
    • N: 44.0073545, S: 44.0073545, E: -71.868064, W: -71.868064
    • N: 43.7211918, S: 43.7211918, E: -72.158099, W: -72.158099
    • N: 43.7833168, S: 43.7833168, E: -72.287761, W: -72.287761
    • N: 44.04972222, S: 44.04972222, E: -72.3125, W: -72.3125
    • N: 44.2754922, S: 44.2754922, E: -72.134167, W: -72.134167
    • N: 44.64, S: 43.7, E: -71.13, W: -72.325
  • This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.
  • DOI PLACE HOLDER
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