Search Result
Data
Soils synoptic sampling grid (REU sites) site locations at the Andrews Experimental Forest are mapped. GPS coordinates were used to generate sample locations from a synoptic soil...
DB Code: SP028
Study date: July 01, 1993 to July 06, 2005
Data
The main objective of this study was to determine if there were relationships between forest floor attributes such as the location of: (1) individual trees, (2) clusters of...
DB Code: SP029
Study date: January 07, 1994 to July 30, 1995
Data
Ectomycorrhizal mats in forest soils have a wide global distribution and are apparently important to nutrient cycling. Since little known about the factors influencing their...
DB Code: SP030
Study date: July 01, 1992 to June 20, 2005
Data
Comparisons of respiration rate and environmental variables for mat and non-mat soil were conducted between July 2008 to Nov 2009 in a 0.1ha plot adjacent lower Lookout Creek,...
DB Code: SP033
Study date: July 01, 2008 to November 30, 2009
Data
Public communications of the H.J. Andrews Experimental Forest were compiled and examined to provide basic information on the outreach program from the Andrews Forest, including...
DB Code: SS001
Study date: January 01, 1980 to June 09, 2002
Data
This dataset was developed for use in an analysis of landcover change in the McKenzie Basin for the Maps and Locals (MALS) project. MALs is funded by LTER Social Science...
DB Code: SS002
Study date: April 20, 2009 to August 23, 2013
Data
Pre- and post-HJA Day surveys were designed to help understand visitor experiences and thoughts about HJA Day 2014. A combined total of 136 individuals registered for HJA Day 2014...
DB Code: SS003
Study date: June 02, 2014 to July 31, 2014
Data
This work highlights the normative dimensions of “ecological forestry,” a strategy of forest management that uses silviculture to mimic the effects
of non-anthropogenic processes...
DB Code: SS004
Study date: May 01, 2014 to June 04, 2015
Data
The Long-term Ecological Research (LTER) Network is a collection of 25 National Science Foundation-funded sites committed to long-term, place-based investigation of the natural...
DB Code: SS005
Study date: August 01, 2013 to October 31, 2014
Data
The H.J. Andrews Experimental Forest (HJA) in the Oregon Cascades is one of 24 sites in the Long-Term Ecological Research (LTER) Network. It supports research on forests, streams...
DB Code: SS006
Study date: June 01, 2016 to October 31, 2016
Data
The objective of this study was to determine the source-distance patterns of coarse woody debris in selected streams flowing through natural conifer forests in the Cascade and...
DB Code: TD010
Study date: September 08, 1981 to September 21, 1981
Data
These data provide an inventory of the mass and nutrients stored within various forest types by coarse woody debris (CWD). CWD inventoried includes standing dead trees (>10 cm...
DB Code: TD012
Study date: July 01, 1977 to August 31, 2005
Data
These data are collected from six sites within the H. J. Experimental Forest and are part of a 200-year experiment on the decomposition of logs in a terrestrial environment. The...
DB Code: TD014
Study date: March 26, 1985 to August 24, 2016
Data
The data collected from this study describe the decomposition of small logs (20-30 cm diameter, 2 m length) in a stream channel to those on an adjacent upland site at the H. J....
DB Code: TD017
Study date: June 04, 1985 to June 16, 2015
Data
These data provide a time series of changes in nitrogen fixation rates, and respiration rates for four common PNW species. The purpose is to understand when these rates reach a...
DB Code: TD018
Study date: March 01, 1987 to May 15, 2006
Data
To examine the seasonal and successional patterns of respiration losses for four species (Abies amabilis, Pseudotsuga menziesii, Thuja plicata, Tsuga heterophylla), and two...
DB Code: TD020
Study date: January 10, 1986 to September 30, 1996
Data
This study was established to examine the loss of mass and changes in nutrient content of fine woody debris in various ecosystems. Also examined was the effect of piece size,...
DB Code: TD021
Study date: October 15, 1985 to October 29, 2015
Data
This data set is used to document the changes in external characteristics, density, nutrient content, and form of carbon associated with various decay classes and ages of logs and...
DB Code: TD022
Study date: September 01, 1982 to June 11, 2001
Data
The primary objective of this study is to examine the control that substrate quality and climate have on patterns of long-term decomposition and nitrogen accumulation in above-...
DB Code: TD023
Study date: January 31, 1990 to June 12, 2007
Data
Fine woody detritus volume and mass in small watersheds at Andrews Experimental Forest, 2002 to 2003
Four small watersheds (WS06, WS07, WS08, and WS09) at the Andrews Experimental Forest were inventoried for fine woody detritus (FWD) using the line transect method as described in...
DB Code: TD024
Study date: June 17, 2002 to September 30, 2003
Data
This study is part of the long-term log decay study (200 years). The experiments are being conducted at six sites located within intact old-growth Douglas-fir-western hemlock...
DB Code: TD025
Study date: September 01, 1986 to December 31, 1992
Data
The purpose of this study is to test the effect of log species and decomposition on the moisture content and water stores in logs.
DB Code: TD026
Study date: January 09, 1985 to November 30, 1988
Data
Measurement data is provided for the radial thickness of various tissue types in wood of varying diameters. These data can be used to create equations to predict the fraction of...
DB Code: TD027
Study date: January 09, 1985 to January 01, 2005
Data
These data provide an inventory of the mass of forest floor organic matter stored within various forest types. This data is used to determine total organic matter, carbon, and...
DB Code: TD028
Study date: January 01, 1992 to December 10, 2003
Data
The primary objective of this study is to examine the control that substrate quality and climate have on patterns of long-term decomposition and nitrogen accumulation in above-...
DB Code: TD029
Study date: January 01, 1993 to January 01, 2003