Return to CIG

Search

View All Publications

Go To Publication by Year:

View Publications by Topic:

Adaptation

Agriculture

Air Quality

Aquatic Ecosystems and Fisheries

Background Papers

Climate: Atmospheric Modeling

Climate: Coupled Atmosphere-Ocean Modeling

Climate: Diagnostics

Climate: Global Climate

Climate: Ocean Modeling

Climate: PNW Climate

Climate: Regional Climate Modeling

Coastal Ecosystems

Coastal Environments

Conservation Biology

Data Analysis and Sharing

Energy

Fact Sheets

Forecasts and Applications

Forest Ecosystems

Human Health

Hydrology and Water Resources

Infrastructure

Integrated Assessment

Ocean Acidification

Oceanography

Program Documents

Science Advisory Reports

Societal Dimensions

Special Reports

Theses and Dissertations

View Publications by Author:

Search the Publication Abstracts:


Other CSES Links:

About CSES

CSES Personnel

Data / Links

Publications

Welcome to the publications directory for the Climate Impacts Group and the Climate Dynamics Group. Please contact the web administrator for assistance with any of these publications.


View: Abstract

Regeneration and understory response to harvest in subalpine forests of the North Cascade Range, Washington

Elman, E, and D.L. Peterson. 2005. Regeneration and understory response to harvest in subalpine forests of the North Cascade Range, Washington. Journal of Ecosystems and Management 6(1): 33-50.

Abstract

We studied the effects of post-harvest treatments on regeneration and forest composition 13-27 years following harvest in high-elevation forests of the North Cascade Range, Washington. Eighteen sites encompassing three common post-harvest treatments were examined at elevations ranging from 830 m to 1460 m. Treatments included:


(1) sites broadcast burned and planted with Abies amabilis or Abies procera;

(2) unburned sites seeded with A. amabilis or A. procera; and

(3) unburned sites mostly planted with A. amabilis.


Overstorey and understorey species composition was determined and compared to agency records of mature forest stands in the area. Burned-planted sites contained a smaller proportion of A. amabilis than unburned sites. Burned sites also contained less advance regeneration than unburned sites. Two understorey vegetation communities were segregated by elevation-an Epilobium angustifolium-Rubus spp. Community dominated lower-elevation sites, and a Vaccinium spp. Community dominated higher-elevation sites. To date, widespread planting and seeding of A. amabilis have not had significant effects on overstorey species composition, although future stand composition is difficult to predict. Comparison of understorey composition showed a contrast between shade-tolerant understorey species in mature stands and shade-intolerant pioneer species in clearcut sites. Advance regeneration in these systems may be enhanced by not using fire to treat slash.