Harmon, M. 2016. Nutrient Concentrations of Vegetation in Small Watersheds at H. J. Andrews Experimental Forest, 2005 to 2006 Long-Term Ecological Research Andrews Forest LTER Site. [Database]. Available: https://andrewsforest-stage.forestry.oregonstate.edu/data/fsdb-data-catalog/TN025 Accessed 2026-05-10.

Past research at the H. J. Andrews Experimental Forest has often occurred at different study locations at different times making comparisons between sites difficult. The small watersheds at the Andrews Forest have been the most extensively studied areas at this research forest and this database is intended to provide comparable nutrient information for these watersheds. The samples collected for these nutrient analysis used a uniform method during the summers of 2005 and 2006. Samples were collected throughout each watershed for the following pools; major tree species foliage, major tree species bark, major tree species wood, high shrubs, low shrubs, herbs. These nutrient analysis will compliment the quantification of biomass measurements made over the years in these watersheds.

Temporal coverage: 2005-05-01 to 2006-09-30

Geographic coverage: Small Watersheds at the H.J. Andrews Experimental Forest

Spatial coverage:

Bounds: W -122.26172200, E -122.26172200, N 44.28196400, S 44.28196400

• The net uptake and storage of nutrients such as N and P in live and dead vegetation can be calculated from the concentration of these elements and the amount of organic matter in these pools. In most of the small watersheds there are estimates of live and dead plant biomass, and for some net changes in these pools. Unfortunately there is no comparable set of data on nutrient concentrations to make estimates of nutrient pool sizes or net changes in these pools. The only dataset available for small watersheds is for WS10 when it was in an old-growth condition. There are no concentration data for other old-growth watersheds or for other age-classes.
• We sampled 7 of the small watersheds at Andrews Forest (WS01, WS02, WS06, WS07, WS08, WS09, and WS10) to determine the concentration of major elements within dead and live vegetation. We conducted this sampling so that it can be repeated in time to determine if concentrations are changing. The data is stored online and can become a general resource for investigators at the site. Specifically, concentration data was determined for: 1) the forest floor, 2) fine woody detritus, 3) trees, 4) shrubs, and 5) herbs. Concentrations in coarse woody detritus and soil were not determined, although rough values for the former have been published. Samples were taken systematically throughout each watershed so that a watershed average can be determined. The intent is therefore not to collect data that shows seasonal trends, only to provide reasonable bulk concentration data for general estimates of long-term stores and fluxes of these elements. Nitrogen and carbon were determined on a C/N analyzer. Cations and P were determined using ICAP.

Title: Long-Term Ecological Research

• Mark E. Harmon
  Role: Principal Investigator
  Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
  Phone: (541) 737-8455, (978) 724-0045 ext 223
  Email: mark.harmon@oregonstate.edu
  URL: http://fes.forestry.oregonstate.edu/people?path=people/harmon-mark
• Steven S. Perakis
  Role: Other Researcher
  US Geological Survey;Forest and Rangeland Ecosystem Science Center;3200 SW Jefferson Way - FSL 164, Corvallis, OR, 97331
  Phone: (541) 758-8786
  Email: steven.perakis@oregonstate.edu
  URL: https://www.usgs.gov/staff-profiles/steven-s-perakis?qt-staff_profile_science_products=0#qt-staff_profile_science_products
• Jay M. Sexton
  Role: Other Researcher
  Corvallis, OR, 97331-5752, USA
  Phone: (541) 737-8430
  Email: hexagon@exchangenet.net
• Becky Fasth
  Role: Other Researcher
  Oregon State University;College of Forestry;Dept. of Forest Ecosystems and Society; 201L Richardson Hall, Corvallis, OR, 97331, USA
  Phone: (541) 737-8431, (541) 737-8460
  Email: becky.fasth@oregonstate.edu
• Mark E. Harmon
  Role: Creator
  Oregon State University;Dept. of Forest Science;321 Richardson Hall, Corvallis, OR, 97331-5752, USA
  Phone: (541) 737-8455, (978) 724-0045 ext 223
  Email: mark.harmon@oregonstate.edu
  URL: http://fes.forestry.oregonstate.edu/people?path=people/harmon-mark

• 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/

• 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/

Past research at the H. J. Andrews Experimental Forest has often occurred at different study locations at different times making comparisons between sites difficult. The small watersheds at the Andrews Forest have been the most extensively studied areas at this research forest and this database is intended to provide comparable nutrient information for these watersheds. The samples collected for these nutrient analysis used a uniform method during the summers of 2005 and 2006. Samples were collected throughout each watershed for the following pools; major tree species foliage, major tree species bark, major tree species wood, high shrubs, low shrubs, herbs. These nutrient analysis will compliment the quantification of biomass measurements made over the years in these watersheds. The net uptake and storage of nutrients such as N and P in live and dead vegetation can be calculated from the concentration of these elements and the amount of organic matter in these pools. In most of the small watersheds there are estimates of live and dead plant biomass, and for some net changes in these pools. Unfortunately there is no comparable set of data on nutrient concentrations to make estimates of nutrient pool sizes or net changes in these pools. The only dataset available for small watersheds is for WS10 when it was in an old-growth condition. There are no concentration data for other old-growth watersheds or for other age-classes. Field Methods - TN025

Purpose: The net uptake and storage of nutrients such as N and P in live and dead vegetation can be calculated from the concentration of these elements and the amount of organic matter in these pools. In most of the small watersheds there are estimates of live and dead plant biomass, and for some net changes in these pools. Unfortunately there is no comparable set of data on nutrient concentrations to make estimates of nutrient pool sizes or net changes in these pools. The only dataset available for small watersheds is for WS10 when it was in an old-growth condition. There are no concentration data for other old-growth watersheds or for other age-classes.

Method Steps

Sampling

No software entries listed in this EML file.

• LTER controlled vocabulary: stand structure (theme), forest dynamics (theme), nutrient budgets (theme), chemical properties (theme), concentration (theme), plant species composition (theme), nutrient cycling (theme), carbon cycling (theme), modeling (theme), inorganic nutrients (theme), nutrients (theme), wood (theme), calcium (theme), carbon (theme), nitrogen (theme), organic matter (theme), ecosystems (theme), forbs (theme), shrubs (theme), trees (theme), bark (theme), foliage (theme), vegetation (theme)
• Andrews Experimental Forest site thesaurus: tissue samples (theme)
• LTER core research areas: inorganic nutrients (theme), organic matter (theme)

• All Organisms: All Organisms
• Family: Non-taxonomic objects (vegetative, organic, or inorganic)
• Species: Species Mix
• Highest common category (ca. kingdom): Plantae
• Division or Phylum: Coniferophyta
• Class: Pinopsida
• Order: Taxales
• Family: Taxaceae
• Genus: Taxus
• Species: Taxus brevifolia
• Order: Pinales
• Family: Pinaceae
• Genus: Tsuga
• Species: Tsuga heterophylla
• Genus: Abies
• Species: Abies procera
• Species: Abies amabilis
• Species: Abies magnifica
• Genus: Pseudotsuga
• Species: Pseudotsuga menziesii
• Genus: Pinus
• Species: Pinus taeda
• Family: Cupressaceae
• Genus: Thuja
• Species: Thuja plicata
• Division or Phylum: Magnoliophyta
• Class: Liliopsida
• Subclass: Commelinidae
• Order: Cyperales
• Family: Cyperaceae
• Genus: Carex
• Species: Carex sheldonii
• Class: Magnoliopsida
• Subclass: Rosidae
• Order: Sapindales
• Family: Aceraceae
• Genus: Acer
• Species: Acer macrophyllum

No related dataset codes found in the EML text fields.

No publication citations found in this EML file.

• Certificates and Material Safety Data Sheets (Search 1575)
  National Institute of Standards and Technology archived certificates
  URL: https://www-s.nist.gov/srmors/searchCertificates.cfm

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: asNeeded

Description

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

Change History

• Version1 (2008-03-10)
  Original entry of upper level metadata using admin interface.
• Version2 (2013-08-06)
  Uploaded entity 1 and 2 data to SQL. Database is now online.