Search Result
Data
The LINX II (Lotic Intersite Nitrogen eXperiment) project was designed to quantify the rates and mechanisms of nitrate retention in streams using stable isotope tracer additions...
DB Code: AN006
Study date: May 01, 2003 to March 01, 2006
Data
Populations of Coastal Cutthroat trout (Oncorhynchus clarkii clarkii) in two standard reaches of Mack Creek in the H.J. Andrews Experimental Forest have been monitored since 1987...
DB Code: AS006
Study date: October 06, 1987 to September 04, 2025
Data
Stream chemistry sampling and analysis was initiated at the H.J. Andrews Experimental Forest in 1968 in two small watersheds (Watersheds 9,10). Sampling has expanded as additional...
DB Code: CF002
Study date: October 02, 1968 to October 01, 2024
Data
Measurements of nitrogen concentrations from grab samples collected from McRae Ck, and from a network of shallow wells located adjacent to the stream. All samples were analyzed...
DB Code: CF004
Study date: September 14, 1989 to March 25, 1993
Data
This study examines headwater stream nutrients at stream gaging sites during selected storms in the Andrews Experimental Forest.
High frequency storm sampling was conducted to...
DB Code: CF006
Study date: May 14, 2001 to November 22, 2003
Data
To better understand the impact of land use on stream nutrient export, a synoptic sampling of streams draining 57 sub-basins within the Willamette River basin was conducted during...
DB Code: CF008
Study date: February 13, 2009 to June 19, 2009
Data
We examined the spatial and temporal variability of stream carbon dioxide (CO2) in a headwater catchment. We measured stream and hyporheic pCO2 at at 30-minute intervals over 11...
DB Code: CF010
Study date: July 22, 2013 to July 10, 2014
Data
This study investigated carbon dynamics in the hyporheic zone of a steep, forested catchment in the Cascade Mountains of western Oregon, USA. Water samples were collected monthly...
DB Code: CF011
Study date: June 13, 2013 to March 16, 2014
Data
Stream specific conductance and water temperature are measured instantaneously every 5 minutes at most of the gauged watersheds within the H.J. Andrews Experimental Forest (...
DB Code: CF012
Study date: October 26, 2011 to October 01, 2025
Data
Collection and analyses of precipitation chemistry were initiated in 1969 at the low-elevation Primary Met site, and in 1973 at a mid-elevation Hi-15 site. Rain collection samples...
DB Code: CP002
Study date: October 01, 1968 to May 22, 2019
Data
Historical wild fire records for the central western Cascades of Oregon are summarized here for the period from 1910 to 1977. Data records are obtained and summarized from...
DB Code: DF001
Study date: January 01, 1979 to December 31, 1979
Data
To create a database of existing published and unpublished tree-ring reconstructions of fire regimes in forested areas, before circa 1900, west of 100 W longitude in the...
DB Code: DF005
Study date: January 01, 1993 to January 01, 1996
Data
Fire history and fire regime were interpreted from tree ring analysis of 4320 stumps at 178 sites in a 25 by 55 km area in the central Oregon Coast Range. A total of 27 fire...
DB Code: DF006
Study date: June 01, 1993 to September 30, 1995
Data
Fire history is documented for an 11,000 hectare (27,110 acre) area in the western Oregon Cascades , including H. J. Andrews Experimental Forest. Fire scar and tree origin data...
DB Code: DF007
Study date: January 10, 1984 to August 31, 1987
Data
This fire history study is conducted within the Douglas-fir forest of the Little River watershed (LRW) in southwestern Oregon. In the LRW, fire has historically been one of the...
DB Code: DF008
Study date: January 06, 1996 to January 10, 1996
Data
Fire history and fire regimes were reconstructed for a 450 square meter area in the central western Cascades using tree-ring analysis of fire scars and tree origin years at 137...
DB Code: DF014
Study date: May 01, 1996 to August 24, 1998
Data
1991, 2013, and 2015 Spot Fire Locations for the HJ Andrews Experimental Forest. This data documents the locations of small fires on the Andrews. There is little additional...
DB Code: DF018
Study date: October 01, 1991 to July 01, 2015
Data
Fire History - H J Andrews and Vicinity (1482 - 1952) individual fires and fire frequency. Fire history studies by Peter Teensma provide the base information for this layer....
DB Code: DF019
Study date: February 10, 1993 to January 01, 1997
Data
The primary objectives of this study were to assay where super old-growth (SOG) persists on the landscape, what factors enabled it to survive for more than 550 years, and to...
DB Code: DF020
Study date: January 09, 2002
Data
Landslides are a serious geologic hazard, threatening public safety, natural resources, and infrastructure, and costing millions of dollars for repairs each year in Oregon. This...
DB Code: DF026
Study date: July 15, 1999 to September 01, 2002
Data
These data are the raw forest stand- and age-structure data from 124
stands in the central western Cascades of Oregon used to construct a conceptual model of stand development...
DB Code: DF028
Study date: March 20, 2005 to September 30, 2010
Data
Andrews road construction history is mapped. This data includes the year and 1/2 decade of construction for the road network around the HJ Andrews Experimental Forest. Note that...
DB Code: DH001
Study date: March 11, 1991 to November 12, 1992
Data
Historic salvage sale areas (with buffered roads) are reconstructed. Historic salvage timber sales in the H J Andrews from 1954 - 1974 were outlined on a variety of hard copy maps...
DB Code: DH002
Study date: June 08, 1993 to January 11, 1996
Data
The primary objective of this study is to predict the volume of the tree bole that is converted to forest products with a long-term lifespan (greater than 5 years). This...
DB Code: FS111
Study date: January 01, 1993 to December 31, 1993
Data
Studies of the effects of forest roads on mountain watersheds (e.g. Jones and Grant 1996; Wemple et al. 1996) led to asking how sedimentation processes were affected by roads...
DB Code: GE008
Study date: May 02, 1999 to September 02, 1999