Download FRED 3.0

FRED 3.0 has a new look! When you fill out the form below, you will receive an email token directing you to a new Searchable Interface where you can filter the observations in the FRED database to only those observations of interest to you. This token will expire after 24 hours, but come back as often as you'd like!

Before downloading FRED through the user interface below, you may want to check out tips for using FRED. Also check out our Privacy Policy; FRED respects the privacy of all of our users and we take seriously our responsibility to protect all personal information that we collect.

Please let us know through the contact page if you notice any mistakes in FRED 3.0, and we will be happy to make these corrections in the next release. Our hope is that with help from you, we can make FRED as accurate and useful as possible to the broader ecological and modeling communities.

FRED 3.0 may be cited using the following Digital Object Identifier (DOI): 

Iversen CM, McCormack ML, Baer JK, Powell AS, Chen W, Collins C, Fan Y, Fanin N, Freschet GT, Guo D, Hogan JA, Kou L, Laughlin DC, Lavely E, Liese R, Lin D, Meier IC, Montagnoli A, Roumet C, See CR, Soper F, Terzaghi M, Valverde-Barrantes OJ, Wang C, Wright SJ, Wurzburger N, Zadworny M. 2021. Fine-Root Ecology Database (FRED): A Global Collection of Root Trait Data with Coincident Site, Vegetation, Edaphic, and Climatic Data, Version 3. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. Access on-line at:

We encourage data users to cite original data sources where possible.

Please review the Data Use Guidelines before completing this form in order to access the downloadable data files.
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