Welcome to FRED!

Those of us focused on measuring belowground processes have dusted off our data, pooled them together into one harmonized database, and freely shared these hard-won observations. Our hope is that they will be used by the broader community of root and rhizosphere ecologists to tackle some of the biggest questions in belowground ecology, and that some of the answers to these questions will be hard-coded into the models that inform our understanding of the world as it is now and as it will be in the future.

The second version of the Fine-Root Ecology Database is available for download! Download the full FRED 2.0 data set, user guidance document, map, and list of data sources here. Prior to downloading the data, please read and follow the Data Use Guidelines, and it's worth checking out some tips for using FRED before you begin your analyses. Also, see here for an updating list of corrections to FRED 2.0.

The third version of FRED is coming in February 2021! FRED 3.0 has been encoded into database form and we have developed a User Interface that will allow root ecologists to filter the observations in FRED according to their scientific needs.

For more information on FRED, check out the 'Project' page, see Iversen et al., 2017 for a paper describing the FRED initiative, and check out an ORNL research highlight on the story behind FRED.

Check out this list of publications that have used FRED as a go-to resource for all of their root trait data needs! 

FRED is built on community data and its continued improvement and expansion hinges largely on community interest and engagement. We strongly encourage researchers to directly contribute data. After all…the next version of FRED is just over the horizon.

  • Herbaceous root architecture

    Herbaceous root architecture (Sun et al. 2016, Scientific Reports) | nature.com

  • Fine roots and fungi in a bog

    Fine roots and fungi in an ombrotrophic bog | SPRUCE project

  • Ingrowth core from an ombrotrophic bog

    Ingrowth core from an ombrotrophic bog | SPRUCE project

  • Woody root architecture of sweetgum trees at ORNL FACE

    Woody root architecture of sweetgum trees at ORNL FACE | FACE experiment

  • Visual comparison of Oak and Tulip Poplar fine roots

    Oak (left) vs. Tulip Poplar (right) fine roots

  • Ectomycorrhizas on pine roots

    Ectomycorrhizas on pine roots (photo by SG Pritchard)

  • Twelve examples of root architecture variation different species of oak.

    Variation in coarse root architecture among different species of oak

  • Cross-section of five Norway Maple roots

    Changes in root anatomy across five root orders in Norway maple (photos by M Zadworny)