Search Result
Data
These data describe the response of herbs, shrubs, and trees to the exclusion of Roosevelt elk using fencing exclosures. The study is being conducted on two terrace levels in the...
DB Code: TV020
Study date: April 23, 1979 to June 18, 2007
Data
Small canopy disturbances are important to the structure and function of forest ecosystems. Fine-scale disturbances (the death of one to many trees) largely control the population...
DB Code: TV025
Study date: April 01, 1990 to September 01, 2006
Data
The primary objective of this study is to predict the volume of the tree bole that is left on the site during a harvest operation. This data is needed to predict the amount of...
DB Code: TV030
Study date: January 06, 1982 to January 09, 1992
Data
To estimate the effects of large residual trees on growth and yield of conifers, and to provide information on forest composition and structure for studies of the effects of large...
DB Code: TV033
Study date: January 01, 1993
Data
This data set describes basic description of bryophyte communities in riparian forests, relations between community patterns and major environmental gradients, and compares the...
DB Code: TV036
Study date: July 01, 1994 to April 01, 1995
Data
The fire that consumed a good deal of the Torrey-Charlton RNA in August of 1996 provided a unique opportunity to observe natural, post-fire vegetation dynamics in high elevation...
DB Code: TV045
Study date: September 01, 1997 to October 11, 2016
Data
The objectives of this effort were to characterize species presence, cover, and biomass for herbs, shrubs, and tree regeneration, and to quantify tree regeneration by species and...
DB Code: TV052
Study date: June 01, 1999 to October 01, 2000
Data
Estimates of forest canopy cover are widely used in forest research and management, yet methods used to quantify canopy cover and the estimates they provide vary greatly. Four...
DB Code: TV056
Study date: June 26, 2001 to September 09, 2001
Data
Vegetation classification, Andrews Experimental Forest and vicinity (1988,1993,1996,1997,2002, 2008)
This data set includes vegetation classifications from the Willamette National Forest (years 1993, 1996, 1997, 2002, and 2008) and from 1988 thematic mapper satellite image.
DB Code: TV061
Study date: January 01, 1993 to August 20, 2008
Data
Plant Communities of the HJ Andrews Experimental Forest (revised 2009). A total of 23 forest communities have been identified and characterized in a preliminary manner. Data used...
DB Code: TV062
Study date: December 15, 1992 to April 01, 2009
Data
This database contains data about the trees, and the tree-ring records collected from them, in a 3.3 hectare plot in an old-growth Douglas-fir/western hemlock stand in the western...
DB Code: TV069
Study date: June 01, 1992 to June 01, 2000
Data
The data in this database describe the permanent plots collected on Mount St. Helens from 1980 to 2005 by Roger del Moral. Plots occur in mildly impacted tephra, scoured sites on...
DB Code: TV070
Study date: June 01, 1980 to September 30, 2005
Data
The data in this database describe the grid plots collected on Mount St. These plots permit monitoring of the development of vegetation and spatial expansion in a detailed way....
DB Code: TV071
Study date: August 18, 1987 to November 01, 2005
Data
The biomass raster was developed by equations in (Seidl, et al 2012). Lidar variables used to create the raster include 95th percentile height, bare earth elevation, and the...
DB Code: TV080
Study date: August 10, 2008 to August 11, 2008
Data
There are three types of forest metrics within this database. They all are derived from the raw Lidar point clouds using the FUSION software. The three types are canopy closure,...
DB Code: TV081
Study date: August 10, 2008 to August 11, 2008
Data
This study investigates how differences in tree age, stand structure and species composition between an old and young Douglas-fir/western hemlock forest impacts overstory...
DB Code: TW003
Study date: June 01, 1999 to September 30, 2002
Data
This database was developed to store data for ecophysiology and ecohydrology studies in Watershed 01 (WS01) at the H.J. Andrews Experimental Forest. The data include a...
DB Code: TW006
Study date: September 30, 2005 to May 05, 2011
Data
We designed and conducted a survey of volunteers who work in city parks in Portland, Oregon and Vancouver, Washington to understand natural area volunteer commitment and...
DB Code: UE001
Study date: September 01, 2011 to June 01, 2012
Data
The Civic Ecology Policy Interview dataset comprises transcripts or notes from 17 interviews conducted with government officials about the strategic approaches and biophysical/...
DB Code: UG001
Study date: June 28, 2011 to October 26, 2011
Data
This project documents the extent of riparian vegetation loss during a period of rapid development (1990-2008) in three Oregon cities. Aerial photographs, at a 1-foot resolution,...
DB Code: UI001
Study date: January 01, 1990 to December 31, 2008
Data
The data are aerial photo-interpreted structure (or building) counts gathered of the USDA Forest Service, Forest Inventory and Analysis Program, Portland, OR.
For details see:...
DB Code: UL001
Study date: January 01, 1975 to December 31, 2005
Data
The relationship among land cover, topography, built structure and stream water quality in the Portland Metro region of Oregon and Clark County, Washington areas, USA, is analyzed...
DB Code: UW001
Study date: January 07, 1998 to August 30, 2010
Data
The US Forest Service (USFS), Pacific Northwest Research Station (PNW), and Oregon State University (OSU) established the Young Stand Thinning and Diversity Study (YSTDS) in 1990...
DB Code: WE008
Study date: October 15, 1991 to May 05, 2012
Data
Previous descriptive and associative research approaches have identified associations between the amount of coarse woody debris (CWD) and either the occurrence or abundance of...
DB Code: WE026
Study date: September 01, 1995 to December 01, 1999
Data
Logistic regression models predicting probability of occurrence of bird and of small-mammal species were produced using animal-habitat data sets from throughout western Oregon (...
DB Code: WE027
Study date: January 01, 1998 to January 01, 1999