Griffiths, R. 2014. Role of vegetation and coarse wood debris on soil processes and mycorrhizal mat distribution patterns at the Hi-15, Andrews Experimental Forest, 1994-1995 Long-Term Ecological Research Andrews Forest LTER Site. [Database]. Available: https://andrewsforest-stage.forestry.oregonstate.edu/data/fsdb-data-catalog/SP009 Accessed 2026-05-10.

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 undergrowth vegetation, (3) coarse woody debris, (4) rocks and (5) topography and both soil characteristics and distribution patterns of ectomycorrhizal fungal mats. This data set includes mat, rock, wood, and moss distribution patterns (as presence or absence at each sampling node) as well as basic soil date taken at the same locations. The forest floor attributes were digitized using Esri ArcGIS. These GIS data layers are available as separate files in FSDB Database code SP029.

Temporal coverage: 1994-07-01 to 1995-07-31

Geographic coverage: Andrews Experimental Forest near High 15 site

Spatial coverage:

Bounds: W -122.17100000, E -122.17100000, N 44.26610000, S 44.26610000

• We have long been interested in determining the extent to which plants and coarse woody debris (CWD) influenced forest soils. It has been speculated that plants impart changes in soils that effectively increase the resiliency of a stand to disturbance; this idea has been formalized in the concept of forest legacies (Perry et al., 1989). We have also been interested in factors influencing the distribution of ectomycorrhizal fungi. Earlier studies on 2 x 10 m plots showed not relationship between the distribution of rocks, trees and CWD and mat distribution patterns on the scale of a few meters. We wanted to determine if relationships between these features and mat distribution patterns could be detected at a larger scale. In this study we jumped from a 1 to at 5 m resolution. At this scale, the effects of large groupings of understory vegetation and large assemblages of CWD on mat distribution could be assessed. It also provided another opportunity to look at the role mats play in soil biogeochemical processes, supporting earlier studies (Griffiths et al., 1990, 91, 92; Aquiera and Griffiths, 1993).

Title: Long-Term Ecological Research

• Robert P. Griffiths
  Role: Principal Investigator
  Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
  Phone: (541) 737-6559
  Email: bbgriff@peak.org, griff@for.orst.edu
• Robert P. Griffiths
  Role: Abstractor
  Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
  Phone: (541) 737-6559
  Email: bbgriff@peak.org, griff@for.orst.edu
• Robert P. Griffiths
  Role: Creator
  Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
  Phone: (541) 737-6559
  Email: bbgriff@peak.org, griff@for.orst.edu

• Information Manager
  Andrews Forest LTER Program, US Forest Service Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, OR, 97331
  Email: hjaweb@fsl.orst.edu
  URL: http://andrewsforest.oregonstate.edu/
• Robert P. Griffiths
  Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
  Phone: (541) 737-6559
  Email: bbgriff@peak.org, griff@for.orst.edu

• Andrews Forest LTER Site
  Role: Publisher
  Forest Ecosystems and Society Department in Forestry, Oregon State University, 201K Richardson Hall, Corvallis, OR, 97331-5752
  Phone: (541) 737-8480
  Email: lterweb@fsl.orst.edu
  URL: http://andrewsforest.oregonstate.edu/

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 undergrowth vegetation, (3) coarse woody debris, (4) rocks and (5) topography and both soil characteristics and distribution patterns of ectomycorrhizal fungal mats. This data set includes mat, rock, wood, and moss distribution patterns (as presence or absence at each sampling node) as well as basic soil date taken at the same locations. The forest floor attributes were digitized using Esri ArcGIS. These GIS data layers are available as separate files in FSDB Database code SP029. We have long been interested in determining the extent to which plants and coarse woody debris (CWD) influenced forest soils. It has been speculated that plants impart changes in soils that effectively increase the resiliency of a stand to disturbance; this idea has been formalized in the concept of forest legacies (Perry et al., 1989). We have also been interested in factors influencing the distribution of ectomycorrhizal fungi. Earlier studies on 2 x 10 m plots showed not relationship between the distribution of rocks, trees and CWD and mat distribution patterns on the scale of a few meters. We wanted to determine if relationships between these features and mat distribution patterns could be detected at a larger scale. In this study we jumped from a 1 to at 5 m resolution. At this scale, the effects of large groupings of understory vegetation and large assemblages of CWD on mat distribution could be assessed. It also provided another opportunity to look at the role mats play in soil biogeochemical processes, supporting earlier studies (Griffiths et al., 1990, 91, 92; Aquiera and Griffiths, 1993). Field Methods - SP009

Purpose: We have long been interested in determining the extent to which plants and coarse woody debris (CWD) influenced forest soils. It has been speculated that plants impart changes in soils that effectively increase the resiliency of a stand to disturbance; this idea has been formalized in the concept of forest legacies (Perry et al., 1989). We have also been interested in factors influencing the distribution of ectomycorrhizal fungi. Earlier studies on 2 x 10 m plots showed not relationship between the distribution of rocks, trees and CWD and mat distribution patterns on the scale of a few meters. We wanted to determine if relationships between these features and mat distribution patterns could be detected at a larger scale. In this study we jumped from a 1 to at 5 m resolution. At this scale, the effects of large groupings of understory vegetation and large assemblages of CWD on mat distribution could be assessed. It also provided another opportunity to look at the role mats play in soil biogeochemical processes, supporting earlier studies (Griffiths et al., 1990, 91, 92; Aquiera and Griffiths, 1993).

Method Steps

Sampling

No software entries listed in this EML file.

• LTER controlled vocabulary: biological processes (theme), inorganic nutrients (theme), organic matter (theme), ecosystems (theme), mycorrhizae (theme)
• Andrews Experimental Forest site thesaurus: Long-Term Ecological Research (LTER) (theme), ecosystem processes (theme)
• LTER core research areas: inorganic nutrients (theme), organic matter (theme)

No taxonomic hierarchy listed in this EML file.

• SP029

No publication citations found in this EML file.

No related files listed in this EML file.

Data Use Agreement:

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. This Data Set is released under the Creative Commons license CC BY "Attribution" (see: https://creativecommons.org/licenses/by/4.0/). Creative Commons license CC BY - Attribution is a license that allows others to distribute, remix, tweak, and build upon your work (even commercially), as long as you are credited for the original creation. This license accommodates maximum dissemination and use of licensed materials.

It is considered professional conduct and an ethical obligation to acknowledge the work of other scientists. The Data User is asked to provide attribution of the original work if this data package is shared in whole or by individual parts or used in the derivation of other products. A recommended citation is provided for each Data Set in the Andrews LTER data catalog (see: http://andlter.forestry.oregonstate.edu/data/catalog/datacatalog.aspx). A generic citation is also provided for this Data Set on the website https://portal.edirepository.org in the summary metadata page. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed and all data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data.

General acknowledgement: Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.

License: N/A

Maintenance update frequency: notPlanned

Description

• An update history is logged and maintained with each new version of every dataset.

Change History

• Version1 (2001-02-24)
  Original metadata creation.
• Version2 (2002-04-17)
  Metadata restructured and moved into SQLServer metadata database LTERMETA. Data moved into SQLServer database FSDBDATA.
• Version7 (2014-01-15)
  Recreated CSV files with new delimiter for uploading into PASTA. Added database coordinates and created STCODE to be enumerated. Linked study to spatial database.