Ground Flora, Regen, and Soil Properties

Jeremy Fauskee, Alaina Berger, John Kabrick, Eric Zenner, Jeri Peck, Jennifer Grabner, Klaus Puettmann, Ezzati Satar, M. Jourgholami

What are the immediate impacts of timber harvesting activities on the ground and its flora?  One project in the long-term Missouri Ozarks Forest Ecosystem Project (MOFEP) found short-term changes in the ground flora after the first wave of harvest entries.  How fast does heavy equipment compact the soil and does it matter?  Another project correlated re-vegetation following harvest with the number of times equipment was driven over a given spot (recorded using GPS).  Yet others have explored the effects of harvesting traffic in the Carpathian Mountains.  Sure enough, it doesn't take too many passes to compact the soil.  Suckering species like aspen don't seem to mind, but herbs sure do.


Jaafari, A., A. Najafi, and E.K. Zenner.  2014.  Ground-based skidder traffic changes chemical soil properties in a mountainous Oriental beech (Fagus orientalis Lipsky) forest in Iran.  Journal of Terramechanics 55:39-46.

Jourgholami, M., S. Soltanpour, A. Etehadi Abari, and E.K. Zenner.  2014.  Influence of slope on physical soil disturbance due to farm tractor forwarding in a Hyrcanian forest of northern Iran.  iForest – Biosciences and Forestry 7:342-348.

Sattar, E., A. Najafi, M.A. Rab, and E.K. Zenner.  2012.  Recovery of bulk density, porosity and rutting from ground skidding over a 20-year period after timber harvesting in Iran. Silva Fennica, 46(4):521-538.

Zenner, E.K. and A.L. Berger.  2008.  Influence of skidder traffic and canopy removal intensities on the ground flora in a clearcut-with-reserves northern hardwood stand in Minnesota, USA.  Forest Ecology and Management 256:1785-1794.

Zenner, E.K., J. T. Fauskee, A.L. Berger, and K.J. Puettmann.  2007.  Impacts of skidding traffic intensity on soil disturbance, soil recovery, and aspen regeneration in north-central Minnesota.  Northern Journal of Applied Forestry 24:177-183.

Zenner, E.K., J.M. Kabrick, R.G. Jensen, J.E. Peck, and J.K. Grabner.  2006.  Responses of ground flora to a gradient of harvest intensity in the Missouri Ozarks.  Forest Ecology and Management 222:326-334.