OS - Vegetation data for the Density Management study of western Oregon-new

The data set describes post thinning stand conditions of western Oregon Douglas-fir/western hemlock forests ranging in age from 40-70 years old at the time of thinning. Stand characteristics monitored included overstory stand structure and species composition, natural conifer and hardwood tree regeneration and development, species composition and percent cover of understory vascular plants, and the status and recruitment of large and small logs (woody debris) and snags. The Density Management Study was designed to investigate whether thinning to various densities can accelerate development of late-successional characteristics in young, managed Douglas-fir (Pseudotsuga menziesii) forests (40-70 yrs) while producing wood for the regional economy. The DMS consists of two components: initial thinning treatments (7 sites) and re-thinning treatments (4 sites). These 12 DMS sites are located in the Coast Range and Cascade Foothills of western Oregon. The re-thinning study was installed in 60 to 70-year old stands that were commercially thinned previously. Treatments included a control (once thinned) and a re-thinning treatment to 12-24 trees per hectare (or 30-60 trees per acre), allowing for a clumped distribution. Four treatments implemented at each initial thinning site include an uncut control and units containing one of three levels of residual tree density (high, moderate, and variable density) with circular patch cuts and leave islands of three sizes (0.1, 0.2 and 0.4 hectares or 0.25, 0.5 and 1 acres). The patch cuts and leave islands represent a relatively small proportion of the overall treatment at each site (10% of the treated stand is patch cuts and 10% is leave islands). The initial thinning and rethinning treatments were implemented by thinning from below and by retaining hardwood tree species and minority conifer species. We investigate responses of understory and overstory vegetation to treatments initially after harvest and through time at five year increments following harvests. In addition, we evaluate the relative influence of patch cuts and leave islands on understory vegetation response within initial thinning treatments.

Data e Risorse

Questo dataset non ha dati

Campo Valore
access_constraints ["Use Constraints: None", "Access Constraints: Data are available after research results have been published."]
bbox-east-long -121.5
bbox-north-lat 46.25
bbox-south-lat 42
bbox-west-long -124.6
contact-email Klaus.Puettmann@oregonstate.edu
coupled-resource []
dataset-reference-date [{"type": "publication", "value": ""}]
frequency-of-update annually
licence ["Although these data have been processed successfully on a computer system at Oregon State University, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from an Oregon State University server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The Oregon State University shall not be held liable for improper or incorrect use of the data described and/or contained herein."]
metadata-date 2004-07-27
metadata-language eng; USA
metadata_type geospatial
progress underDevelopment
resource-type dataset
responsible-party [{"name": "Oregon State University, Department of Forest Science", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-124.6, 42.0], [-121.5, 42.0], [-121.5, 46.25], [-124.6, 46.25], [-124.6, 42.0]]]}
spatial_harvester true
temporal-extent-begin 1998-01-01
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • adaptive-management
  • amerigeo
  • amerigeoss
  • bureau-of-land-management
  • cascade-mountains
  • ckan
  • coast-range
  • density-management
  • femat
  • geo
  • geoss
  • late-successional-habitat
  • leave-islands
  • national
  • none
  • north-america
  • oregon
  • overstory
  • patch-cuts
  • public-lands
  • thinning
  • understory-vegetation
  • united-states
  • western-oregon
isopen False
metadata_created 2025-11-20T05:29:19.599803
metadata_modified 2025-11-20T05:29:19.599807
notes The data set describes post thinning stand conditions of western Oregon Douglas-fir/western hemlock forests ranging in age from 40-70 years old at the time of thinning. Stand characteristics monitored included overstory stand structure and species composition, natural conifer and hardwood tree regeneration and development, species composition and percent cover of understory vascular plants, and the status and recruitment of large and small logs (woody debris) and snags. The Density Management Study was designed to investigate whether thinning to various densities can accelerate development of late-successional characteristics in young, managed Douglas-fir (Pseudotsuga menziesii) forests (40-70 yrs) while producing wood for the regional economy. The DMS consists of two components: initial thinning treatments (7 sites) and re-thinning treatments (4 sites). These 12 DMS sites are located in the Coast Range and Cascade Foothills of western Oregon. The re-thinning study was installed in 60 to 70-year old stands that were commercially thinned previously. Treatments included a control (once thinned) and a re-thinning treatment to 12-24 trees per hectare (or 30-60 trees per acre), allowing for a clumped distribution. Four treatments implemented at each initial thinning site include an uncut control and units containing one of three levels of residual tree density (high, moderate, and variable density) with circular patch cuts and leave islands of three sizes (0.1, 0.2 and 0.4 hectares or 0.25, 0.5 and 1 acres). The patch cuts and leave islands represent a relatively small proportion of the overall treatment at each site (10% of the treated stand is patch cuts and 10% is leave islands). The initial thinning and rethinning treatments were implemented by thinning from below and by retaining hardwood tree species and minority conifer species. We investigate responses of understory and overstory vegetation to treatments initially after harvest and through time at five year increments following harvests. In addition, we evaluate the relative influence of patch cuts and leave islands on understory vegetation response within initial thinning treatments.
num_resources 0
num_tags 24
title OS - Vegetation data for the Density Management study of western Oregon-new