Colleen M. Iversen
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    • PiTS
    • ORNL FACE >
      • Data-Model Interactions
      • Belowground harvest
      • Nutrient Cycling Throughout the Soil Profile
      • Digging Deeper
      • Missing Links in the Root-SOM Continuum
      • Root-Derived Input to the Soil
      • Nitrogen Limitation
      • Root decomposition
    • Nutrient-limited peatlands
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Root ingrowth in the bog.

​Given the difficulty of distinguishing between living and dead roots in the anaerobic bog, root ingrowth cores constructed of rigid polypropylene tubes and filled with commercial peat from a nearby bog are being used to capture newly-grown roots seasonally, across microtopographic positions, and throughout the peat profile. 

Upon return to the laboratory, roots are removed from the peat, sorted by species, and separated into absorptive (first three root orders) and transport (4+ orders) fine roots, scanned for morphological characteristics, and analyzed for chemical composition. 

We hypothesize that root growth will increase with warming and drying, but that this response will be species-specific. 

Publications.

Related Publications.




Data Sets.

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This research is funded by the Office of Biological and Environmental Research in the U.S. Department of Energy's Office of Science.

Related projects.

Fine roots and fungi in the bog
Nutrient availability in the bog
Root ingrowth in the bog
Rooting depth distribution in the bog
  • Home
  • CV
    • Refereed publications
    • Published data sets
    • Embroideries
    • Education and Experience
    • Honors and Awards
    • External Funding
    • Service and Professional Activities
    • Press and Public Outreach
    • Invited Presentations
    • Presentations at Annual Meetings
  • Current Projects
  • Completed Projects
    • PiTS
    • ORNL FACE >
      • Data-Model Interactions
      • Belowground harvest
      • Nutrient Cycling Throughout the Soil Profile
      • Digging Deeper
      • Missing Links in the Root-SOM Continuum
      • Root-Derived Input to the Soil
      • Nitrogen Limitation
      • Root decomposition
    • Nutrient-limited peatlands
  • People
  • Contact
  • Learn More