Skip to Main Content
Aspen Regeneration in Riparian ManagementZones in Northern Minnesota: Effects ofResidual Overstory and Harvest MethodAuthor(s): Brian Palik; Kory Cease; Leanne Egeland; Charles Blinn
Source: Northern Journal of Applied Forestry 20(2):79-84
Publication Series: Scientific Journal (JRNL)
Station: North Central Research Station
PDF: Download Publication (803.9 KB)
DescriptionWe examined aspen regeneration under diferent riparian management zone (RMZ) treatments in aspen forests in northern Minnesota. We also compared aspen regeneration in partially harvested RMZs to adjacent upland clearcuts. The four RMZ treatments included: (1) full control (no cutting in RMZ or upland); (2) riparian control (RMZ uncut; upland clearcut); and partially harvested RMZs cut to 54ff2/ac, with upland clearcut using (3) cut-to-length (CTL), or (4) tree-length harvesting. Three years after harvest, aspen sucker densities in the tree-length and CTL treatments were significantly higher than the full control, but did not differ from each other or the riparian control. Mean individual sucker heights (63-73 in) and aboveground biomass (2.4-3.4 oz) varied among the riparian treatments, but not significantly. Sucker densities were 62% higher in the adjacent clearcuts than in the partially harvested RMZs. Mean suckers heights did not differ between the two locations (71 in.), but aboveground biomass of suckers did differ significantly, averaging 3.4 oz in the partially harvested RMZs and 4.5 oz in the clearcuts. Our results indicate that 60% removal of basal area within RMZs increases density and size of aspen regeneration significantly, compared to uncut forest, but stocking is still below what is considered adequate for 3-yr-old stands. Suckering responses were similar with cut-to-length and tree-length harvesting, suggesting that harvest system has little effect on sucker development. While aspen likely will be a component of partially harvested RMZs, density and biomass increment will be much lower than in single-cohort stands and lower than what is considered desirable for commercial production.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationPalik, Brian; Cease, Kory; Egeland, Leanne; Blinn, Charles. 2003. Aspen Regeneration in Riparian ManagementZones in Northern Minnesota: Effects ofResidual Overstory and Harvest Method. Northern Journal of Applied Forestry 20(2):79-84
KeywordsRiparian forests, aspen, overstory retention, BMP
- Overstory and regeneration dynamics in riparian management zones of northern Minnesota forested watersheds
- Response of herbaceous plant community diversity and composition to overstorey harvest within riparian management zones in Northern Hardwoods
- Effects of harvesting on nitrogen and phosphorus availability in riparian management zone soils in Minnesota, USA
XML: View XML