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TD017: Comparison of terrestrial versus aquatic decomposition rates of logs at the Andrews Experimental Forest, 1985 to 2015

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Status: notPlanned
Period: 1985-06-04 to 2015-06-16
Version: 10
Published: 2018-06-19
EDI Package ID: knb-lter-and.4057.10
Source XML: TD017_10.xml

Notice

"As Is" Basis: All content, including maps and forecasts, is provided without warranties. Users are advised to independently verify critical information.

Citation

Harmon, M. 2018. Comparison of terrestrial versus aquatic decomposition rates of logs at the Andrews Experimental Forest, 1985 to 2015 Long-Term Ecological Research Andrews Forest LTER Site. [Database]. Available: https://andrewsforest-stage.forestry.oregonstate.edu/data/fsdb-data-catalog/TD017 Accessed 2026-05-10.

Abstract

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. Andrews Experimental Forest. The stream is a 3rd order above the junction of Lookout Creek and Mack Creek. Three species of trees are being examined: Douglas-fir, western hemlock, and red alder. Data collection started in 1985 and is scheduled to continue to 2050. Periodically a subset of logs is resampled to determine changes in volume, bark cover, density, and nutrient stores. The last set of samples was collected in 2005. Logs ranging in diameter between 20 and 30 cm of a length of 2 m were cut out of live trees of the three species. Logs were placed by hand along a skid road at the terrestrial site. A cable system was used to place log randomly along a stream reach. The location of logs in the stream is noted when they are sampled. The length and diameter as well as bark cover of each sampled log is noted at the time of sampling (td01701). Six cross-sections are removed with a chainsaw. The thickness of the tissue types is noted (inner bark, outer bark, sapwood, and heartwood) and are described in td01702. Samples of each tissue type are taken to determine their moisture content (water mass/dry mass) and density (dry mass/green volume). Density is derived from dry mass and volume as determined via dimensional measurements. Dimensional data, volumes, masses, density, and moisture content are documented in the td01703 table. The volume of logs and tissue types, the total mass, and proportional mass of the tissue types as well as moisture contents is derived from the data in the other data tables and is stored in the td01704 table.

Coverage

Temporal coverage: 1985-06-04 to 2015-06-16

Geographic coverage: H.J. Andrews Experimental Forest along the upper section of Lookout Creek.

Spatial coverage:

Bounds: W -122.11794400, E -122.11794400, N 44.22232200, S 44.22232200

Purpose
  • This study is contrasting decomposition of logs within a stream versus on an adjacent terrestrial site at the H. J. andrews Experimental Forest. Changes in log volume associated with fragmentation and changes in wood density associated with leaching and respiration are being followed.
Project

Title: Long-Term Ecological Research

Personnel
  • Sherri L. Johnson - Principal Investigator
    US Forest Service ;Pacific NW Research Station ;3200 SW Jefferson Way, Corvallis, OR, 97331, USA
    Phone: 541-758-7771
    Email: sherri.johnson2@usda.gov, sherri.johnson@oregonstate.edu
  • Julia A. Jones - Principal Investigator
    Oregon State University;Department of Geosciences; Wilkinson Hall 104, Corvallis, OR, 97331-5506, USA
    Phone: (541) 737-1224
    Email: Julia.Jones@oregonstate.edu, geojulia@comcast.net
    ORCID: http://orcid.org/0000-0001-9429-8925
  • Matthew G Betts - Principal Investigator
    Department of Forest Ecosystems and Society; 201E Richardson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331
    Phone: (541) 737-3841
    Email: matt.betts@oregonstate.edu
  • Michael P. Nelson - Principal Investigator
    Department of Forest Ecosystems and Society; 201K Richarson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331
    Phone: 541-737-9221
    Email: mpnelson@oregonstate.edu
    ORCID: http://orcid.org/0000-0001-6917-4752
  • David Bell - Principal Investigator
    Email: david.bell@usda.gov, david.bell@oregonstate.edu
Abstract
  • The H.J. Andrews Experimental Forest is a living laboratory that provides unparalleled opportunities for the study of forest and stream ecosystems in the central Cascade Range of Oregon. Since 1980, as a part of the National Science Foundation Long Term Ecological Research (NSF-LTER) program, the Andrews Experimental Forest has become a leader in the analysis of forest and stream ecosystem dynamics.
  • Long-term field experiments and measurement programs have focused on climate dynamics, streamflow, water quality, and vegetation succession. Currently researchers are working to develop concepts and tools needed to predict effects of natural disturbance, land use, and climate change on ecosystem structure, function, and species composition.
  • The Andrews Experimental Forest is administered cooperatively by the USDA Forest Service Pacific Northwest Research Station, Oregon State University and the Willamette National Forest. Funding for the research program comes from the National Science Foundation (NSF), US Forest Service Pacific Northwest Research Station, Oregon State University, and other sources.
Funding

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. National Science Foundation: DEB1440409

Study Area Description
  • Long-Term Ecological Research
    The Andrews Forest is situated in the western Cascade Range of Oregon, and covers the entire 15,800-acre (6400-ha) drainage basin of Lookout Creek. Elevation ranges from 1350 to 5340 feet (410 to 1630 m). Broadly representative of the rugged mountainous landscape of the Pacific Northwest, the Andrews Forest contains excellent examples of the region's conifer forests and associated wildlife and stream ecosystems. These forests are among the tallest and most productive in the world, with tree heights of often greater than 250 ft (75 m). Streams are steep, cold and clean, providing habitat for numerous aquatic organisms.
Associated Party
Contact
Publisher
  • 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
Study Description

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. Andrews Experimental Forest. The stream is a 3rd order above the junction of Lookout Creek and Mack Creek. Three species of trees are being examined: Douglas-fir, western hemlock, and red alder. Data collection started in 1985 and is scheduled to continue to 2050. Periodically a subset of logs is resampled to determine changes in volume, bark cover, density, and nutrient stores. The last set of samples was collected in 2005. Logs ranging in diameter between 20 and 30 cm of a length of 2 m were cut out of live trees of the three species. Logs were placed by hand along a skid road at the terrestrial site. A cable system was used to place log randomly along a stream reach. The location of logs in the stream is noted when they are sampled. The length and diameter as well as bark cover of each sampled log is noted at the time of sampling (td01701). Six cross-sections are removed with a chainsaw. The thickness of the tissue types is noted (inner bark, outer bark, sapwood, and heartwood) and are described in td01702. Samples of each tissue type are taken to determine their moisture content (water mass/dry mass) and density (dry mass/green volume). Density is derived from dry mass and volume as determined via dimensional measurements. Dimensional data, volumes, masses, density, and moisture content are documented in the td01703 table. The volume of logs and tissue types, the total mass, and proportional mass of the tissue types as well as moisture contents is derived from the data in the other data tables and is stored in the td01704 table. This study is contrasting decomposition of logs within a stream versus on an adjacent terrestrial site at the H. J. andrews Experimental Forest. Changes in log volume associated with fragmentation and changes in wood density associated with leaching and respiration are being followed. Field Methods - TD017

Purpose: This study is contrasting decomposition of logs within a stream versus on an adjacent terrestrial site at the H. J. andrews Experimental Forest. Changes in log volume associated with fragmentation and changes in wood density associated with leaching and respiration are being followed.

Methods

Method Steps

Field Methods - TD017
  • The logs used in the establishment of this experiment were taken from four locations in the Blue River Ranger District (Figure 1). Western hemlock logs were taken from subcanopy trees felled between June 5-7 near or within the Upper Lookout Creek study site. Age of the trees felled were in greater than 100 yrs and all trees were in suppressed and intermediate canopy classes. The forest at this site old-growth Douglas- fir, although salvage operations had occured in the past.
  • Douglas-fir logs were removed from a mature forest growing adjacent to the rock quarry on Forest Service Road No. 15-130. Trees were felled on June 10 and June 18. Most of the felled trees were in the suppressed and intermediate crown classes, although two trees were codominant. One tree was being attacked by bark beetles, but the foliage was green (logs 71, 72, 73). The age of trees felled was 130 yrs.
  • Red alder was removed from two sites off of the H.J. Andrews Experimental Forest. Thirty-eight logs were removed from the North Quartz Creek site which was adjacent to Forest Service Road No. 15-126. Felling of these trees started June 9 and was completed on June 13. Tree age was generally less than 30 yrs old and canopy class was dominant to codominant. The forest was a successional riparian type; dominated by red alder. The second source area for red alder was from Cougar Creek near the maintenance storage area along Forest Service Road No. 19-411. Felling at this site occurred on June 19. Trees in dominant to codominant canopy classes were used and tree age was less than 30 yrs. As at Quartz Creek the forest was a successional riparian type dominated by red alder.
  • Logs were moved from source areas to the study site by a number of processes. Western hemlock logs were carried to the study site by a crew of 6-8 using rope timber carriers. Red alder and Douglas-fir logs were transported to the study site in pick-up trucks. At the Quartz Creek site, red alder logs were moved From the stream to the road using a slack-line system.
  • Logs on the upland site were placed using a crew of 6-8 workers with rope timber carriers on June 17 and June 20. All but 8 of the logs were placed on June 17. Thirty positions were flagged at 10 m intervals along a "cat-trail" that ran through the was placed in a line perpendicular to the road. The location of each log with respect to the road (i.e., nearest road, middle, farthest from road) was randomly selected. Logs were placed as they "fell" so that logs may have been suspended by underlying logs.
  • Logs were placed in the stream site by a combination of man-power and a slack-line system driven by an electric winch. Stream placement ( occurred on June 21, 24, and 25. Ninety logs were added to the stream over a 150 m mapped reach Prior to placement the location and orientation of logs was marked with colored flags in the stream channel. Logs were moved to the flag and placed so that the center of each log lay over the flag. In order to speed log location and placement and to spread the logs out over the stream reach, they were systematically spaced. Six logs, two of each species, were added to each 10 m segment. The order of species within any 5 m segment was random. Within each 10 m segment the position of the log with respect to the stream channel was randomly chosen. Two of the logs in each 10 m reach were placed in the zone of current flow, two were placed half-in the water and two were placed between the current stream level and that of winter flow. Orientation with respect to stream flow was chosen randomly for each log and four orientations were used. Angle to the current was ( either 0, 45, 90, or 135 degrees. After placement, log location was noted on the map of the stream reach.
  • Maps of both the stream and upland study sites were prepared. In the case of the upland site a tape and compass were used to measure the location of the tributary stream, cat road, and log locations relative to Forest Service Road No. 1506. Louis Stubecki and James Westman surveyed the upland map.
  • Preparation of the stream map was more complex than the upland map. Randy Wildman supervised the mapping of a 300 m stream reach. The upper 150 m section was used to place the logs, while the lower 150 m was mapped in order to track log movement. A compass line was surveyed down the study stream reach and white PVC posts were placed on the stream banks at 10 m intervals. At 1 m intervals the present flow and winter flow was measured with a staff rod held perpendicular to the compass line. Location of rocks larger than 1 m in diameter, logs larger than 15 cm diameter and 1.5 m long, trees and snags in or adjacent to the stream channel and bedrock exposures was measured with the staff rod and sketched onto the map. Finally, the location and orientation of the experimental logs was added to the map immediately following log placement.
  • Before placement, each log was tagged and measured to determine exterior dimensions (see format 1). Each log was tagged with four tags; two tags on each end of the logs. The diameter at each end of each log was measured with a diameter tape to the nearest 0.1 cm. Mean log length was measured to the nearest 1 cm after end cross-sections had been removed. After placement bark cover was estimated to the nearest percent. Only zones with sapwood showing were considered bark free.
  • In subsequent samplings of decayed logs the bark cover was estimated and the diameter and distance from the large end of the cross-section that were removed was recorded.
  • For the undecayed logs cross-sections 3 cm thick were removed from both ends of each log with a chainsaw. For red alder and Douglas-fir logs, cross-sections were removed within a few hours of tree felling. Logs of western hemlock were sampled from a few hours after felling to three days after felling. This was a period of wet weather so drying during this period of storage was probably minimal. Before the cross-sections were removed, the outer 5-10 cm of each end of the log was trimmed away so a clean, undried section of log could be sampled. All cross-sections were sealed in plastic bags and those not processed within 24 hours were stored under refrigeration.
  • For the decayed logs 6 cross-sections were removed with a chainsaw systematically along the length of each log. The position and diameter of each of these cross-sections was recorded. In addition the end diameters were remeasured. In 1987 the large end diameter was measured, and 1989 & 1991 the small end diameter was measured. After this time both ends were measured in the field. For the 1987, 1989, and 1991 years, the missing diameter was estimated from the original diameter and the degree of bark loss. Tha is if all the bark was lost this was subtracted from the original diameter.
  • For undecayed logs , cross-sections were sampled to determine the fractional volume, moisture content, and density of each substrate. Fractional volume of each of four substrates (i.e., heartwood, sapwood, inner bark and outer bark) was calculated from the mean radial thickness of each substrate. Thickness was measured to the nearest mm. Heartwood and sapwood radial thickness was determined by measuring along the long and short axis of the cross-sections. Bark thickness was measured for 1-4 locations on each cross-section depending upon the variation in thickness observed. The methods used to distinguish substrates for the three species differed. In the case of Douglas-fir all four substrates were quite distinctive and easily separated. The pH indicator alazarin-red S was used to distinguish heartwood from sapwood. When applied to Douglas-fir sapwood the indicator turns red, whereas on heartwood the indicator turns yellow. The heartwood-sapwood boundary of western hemlock ws more difficult to determine than for Douglas-fir. After examining many cross-sections, we determined that the sapwood of western hemlock was slightly darker than the heartwood. This was especially apparent when the cross-section was "split open". The darker coloration was caused by the higher moisture content of the sapwood. In the case of red alder there was no way to reliably separate heartwood from sapwood. Therefore, all wood was considered sapwood for this species.
  • The volume of each substrate was calculated from the radial measurements from each end and log lengths by assuming logs were frustrums of cones. Inner and outer bark volumes were adjusted to reflect losses prior to placement. Fractional volume was calculated using the total volume based on radial measurements. This volume was slightly lower than that estimated from taped diameter measurements.
  • Photographs were taken to document changes in the cross-sections as they began to decay. These have not been digitized as of 1991.
  • Cross-sections were dissected to determine moisture and density. The mean exterior dimensions of these samples were measured to the nearest mm in order to calculate volume. Pieces of sapwood of Douglas-fir and western hemlock, and inner bark and outer bark of all three species were assumed to be rectangular parallelepipeds and volume was calculated from the Comparison to volumes measured using water displacement indicate these volumes estimates were accurate and unbiased. After measurement, the outer bark and inner bark were separated using a chisel. The heartwood of Douglas-fir and western hemlock, and the sapwood of red alder was cut in triangular pieces. The volume of triangular shaped pieces was calculated using Hero's formula:
  • A = [s(s-a)(s-b)(s-c)^0.5
  • where A is the area, a, b, and c are the lengths of the three sides and
  • s=(a+b+c)/2
  • The volume, V, was therefore:
  • V = Ad
  • where d is the thickness.
  • Based on susequent studies, it appears that Hero's formula underestimated the volume of triangular pieces by 24.7 %. The calculated volume of triangular pieces was therefore multiplied by 1.247 to correct for this bias. Starting in 1987, the volume of triangular pieces was estimated using a formula for a sector of a circle. This formula did not have the same bias as the Hero formula. The exact formula used was: A=S/360*pi*R^2 where S is the angle of the sector in degrees, and R is the mean radial lenght of the sector.
  • In 1985 wet weight was measured to the nearest 1 g on an electronic, digital scale. Starting in 1987, wet weight was recorded to the nearest 0.01 g. The 1985 samples were air dried for 3-5 weeks and then oven dried for 4 days at 55 degrees C. Samples were allowed to cool to room temperature and weighed to the nearest 0.01 g on an electronic digital scale. The based on a subsampling of 95 samples that were redried and weighed just after removal from the oven, the moisture content at this times was 2.5%. The initial density and moisture content was adjusted in the TD173.dat file to remove the effect of this slight increase in moisture content.
  • Samples measured in 1987 and after were dried at 55 degrees C for 5-7 days immediately following wet weight determination. Oven dry weights were measured immediately following removal from the oven.
  • Total mass and fractional mass were calculated using substrate volumes and the mean density of substrates for each log. In the case of red alder, outer and inner bark were combined because the thickness of inner bark was not measured accurately enough (it was often less than 1 mm thick). Subsequent analysis of the Douglas-fir and hemlock bark densities indicates that thickness was not measured accurately. In future analysis it may be best to combine outer and inner bark results.

Sampling

Sampling Description
  • This experiment was designed so that the decline in log density, volume and dry mass over time could be compared between log species and stream and upland sites using analysis of covariance. A total of 180 logs were used in the experiment. Thirty logs of each of three species (i.e., red alder, Douglas-fir, and western hemlock) were added to each site (i.e., stream versus upland). Periodically a subsample of logs will be removed from each site and log volume, mass, and bark cover will be measured. In addition, each removed log will be thoroughly dissected to determine the volume of decay and insect galleries and the fractional volume of the substrates remaining. Samples of each substrate will be taken in order to estimate the substrate density, moisture and nutrient content. Three logs of each species will be removed from each site at each sample time. The first sample will be removed after 2 yrs of decay and then at 4 yr intervals until 32 yrs after the initiation of the experiment.
  • In addition to examining the decay of logs, their movement downstream will be followed. The exact nature of the statistical analysis used for this aspect of the study has not been determined.
Spatial Sampling Units
  • Upper Lookout Creek
    W -122.16810500, E -122.12601600, N 44.23402900, S 44.22757500
    Altitude: 998 to 998 meter
Software

No software entries listed in this EML file.

Keywords
  • LTER controlled vocabulary: geomorphology (theme), decay rates (theme), decomposition (theme), inorganic nutrients (theme), woody debris (theme), coarse woody debris (theme), organic matter (theme), logs (theme)
  • LTER core research areas: inorganic nutrients (theme), organic matter (theme)
Taxonomic Hierarchy
  • All Organisms: All Organisms
  • Highest common category (ca. kingdom): Plantae
  • Division or Phylum: Magnoliophyta
  • Class: Magnoliopsida
  • Subclass: Hamamelididae
  • Order: Fagales
  • Family: Betulaceae
  • Genus: Alnus
  • Species: Alnus rubra
  • Division or Phylum: Coniferophyta
  • Class: Pinopsida
  • Order: Pinales
  • Family: Pinaceae
  • Genus: Tsuga
  • Species: Tsuga heterophylla
  • Genus: Pseudotsuga
  • Species: Pseudotsuga menziesii
Data Entities
# Entity Metadata Data
1 TD01701
TD01701
Log Descriptions Including Length, Diameters, Bark Cover:
 METADATA DATA
2 TD01702
TD01702
Radial Thickness Of Tissue Types:
 METADATA DATA
3 TD01703
TD01703
Sample Dimensions, Weights, Density, and Moisture Contents:
 METADATA DATA
4 TD01704
TD01704
Log Volumes, Tissue Volumes, Total Mass, Proportional Mass:
 METADATA DATA
Metadata
TD01701 - TD01701

Object name: TD01701.csv

Records: 316

Attributes: 27

Temporal coverage: 1985-06-19 to 2015-06-12

File size: 28795 byte

Checksum (MD5): 6000f20239012898c2fa8451fec62524

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    TD01701.NUMBER, TD01701.YEAR
  • notNullConstraint: NOTNULL
    TD01701.LOCATION, TD01701.STUDYID, TD01701.DBCODE, TD01701.SPECIES, TD01701.BARKCOVER, TD01701.ENTITY, TD01701.DM0, TD01701.DM7, TD01701.LENGTH, TD01701.NUMBER, TD01701.X0, TD01701.X7, TD01701.YEAR, TD01701.SAMPLEDATE
Attributes (27)
DBCODE - char(5) (nominal)

ID: TD01701.DBCODE

FSDB Database code

Type system: Microsoft SQL Server 2008

ENTITY - numeric(1,0) (interval)

ID: TD01701.ENTITY

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=1.0000 (exclusive=false), max=1.0000 (exclusive=false)

STUDYID - char(3) (nominal)

ID: TD01701.STUDYID

Study area id

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • ULC
    Upper Lookout Creek
YEAR - numeric(4,0) (interval)

ID: TD01701.YEAR

Year of observation

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=integer, min=1985.0000 (exclusive=false), max=2015.0000 (exclusive=false)

NUMBER - numeric(3,0) (ratio)

ID: TD01701.NUMBER

Log number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=280.0000 (exclusive=false)

SPECIES - char(4) (nominal)

ID: TD01701.SPECIES

Species of log

Type system: Microsoft SQL Server 2008

Code definitions (3)
  • ALRU
    Alnus rubra
  • PSME
    Pseudotsuga menziesii
  • TSHE
    Tsuga heterophylla
LOCATION - char(1) (nominal)

ID: TD01701.LOCATION

Location of log, stream = a, land = t

Type system: Microsoft SQL Server 2008

Code definitions (2)
  • T
    Terrestrial or upland site
  • A
    Aquatic or stream site
POSITION - char(3) (nominal)

ID: TD01701.POSITION

Indicates where log was found or placed. for stream the numbers indicate the 10-m section log occurred, 1=1-10,2-10-20, etc

Type system: Microsoft SQL Server 2008

LENGTH - numeric(3,0) (ratio)

ID: TD01701.LENGTH

Length of log

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=150.0000 (exclusive=false), max=270.0000 (exclusive=false)

BARKCOVER - numeric(3,0) (ratio)

ID: TD01701.BARKCOVER

Portion of log covered by bark, includes inner and outer bark

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 5.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)

X0 - numeric(3,0) (ratio)

ID: TD01701.X0

The point where diameter measurement was taken for the large end of the log

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=0.0000 (exclusive=false)

DM0 - numeric(3,0) (ratio)

ID: TD01701.DM0

Diameter measurement of the large end of the log

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 2.000000

Numeric domain: type=integer, min=109.0000 (exclusive=false), max=330.0000 (exclusive=false)

X1 - numeric(3,0) (ratio)

ID: TD01701.X1

The point where first cross-section was removed

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=10.0000 (exclusive=false), max=53.0000 (exclusive=false)

DM1 - numeric(3,0) (ratio)

ID: TD01701.DM1

Diameter measurement of the first cross-section

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 2.000000

Numeric domain: type=integer, min=109.0000 (exclusive=false), max=312.0000 (exclusive=false)

X2 - numeric(3,0) (ratio)

ID: TD01701.X2

Point where second cross-section was removed

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=40.0000 (exclusive=false), max=94.0000 (exclusive=false)

DM2 - numeric(3,0) (ratio)

ID: TD01701.DM2

Diamter measurement of the second cross-section

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 2.000000

Numeric domain: type=integer, min=87.0000 (exclusive=false), max=308.0000 (exclusive=false)

X3 - numeric(3,0) (ratio)

ID: TD01701.X3

The point where third cross-section was removed

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=65.0000 (exclusive=false), max=140.0000 (exclusive=false)

DM3 - numeric(3,0) (ratio)

ID: TD01701.DM3

Diameter measurement of the third cross-section

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 2.000000

Numeric domain: type=integer, min=17.0000 (exclusive=false), max=306.0000 (exclusive=false)

X4 - numeric(3,0) (ratio)

ID: TD01701.X4

The point where fourth cross-section was removed

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=91.0000 (exclusive=false), max=221.0000 (exclusive=false)

DM4 - numeric(3,0) (ratio)

ID: TD01701.DM4

Diameter measurement of the fourth cross-section

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 2.000000

Numeric domain: type=integer, min=25.0000 (exclusive=false), max=303.0000 (exclusive=false)

X5 - numeric(3,0) (ratio)

ID: TD01701.X5

The point where fifth cross-section was removed

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=120.0000 (exclusive=false), max=255.0000 (exclusive=false)

DM5 - numeric(3,0) (ratio)

ID: TD01701.DM5

Diameter measurement of the fifth cross-section

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 2.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=303.0000 (exclusive=false)

X6 - numeric(3,0) (ratio)

ID: TD01701.X6

The point where the sixth cross-section was removed

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=147.0000 (exclusive=false), max=262.0000 (exclusive=false)

DM6 - numeric(3,0) (ratio)

ID: TD01701.DM6

Diameter measurement of the sixth cross-section

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 2.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=298.0000 (exclusive=false)

X7 - numeric(3,0) (ratio)

ID: TD01701.X7

Position of the small end of the log, should equal the total length

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=integer, min=150.0000 (exclusive=false), max=270.0000 (exclusive=false)

DM7 - numeric(3,0) (ratio)

ID: TD01701.DM7

Diameter at the small end of the log

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 2.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=318.0000 (exclusive=false)

SAMPLEDATE - datetime (dateTime)

ID: TD01701.SAMPLEDATE

Date of observation

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

TD01702 - TD01702

Object name: TD01702.csv

Records: 360

Attributes: 11

Temporal coverage: 1985-06-11 to 1985-06-20

File size: 18962 byte

Checksum (MD5): 2762296ae24c6c8b3292b8c2e1ce768a

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    TD01702.END_REM, TD01702.NUMBER, TD01702.YEAR
  • notNullConstraint: NOTNULL
    TD01702.END_REM, TD01702.STUDYID, TD01702.DBCODE, TD01702.ENTITY, TD01702.HWT, TD01702.IBT, TD01702.NUMBER, TD01702.OBT, TD01702.SWT, TD01702.YEAR, TD01702.SAMPLEDATE
Attributes (11)
DBCODE - char(5) (nominal)

ID: TD01702.DBCODE

FSDB Database code

Type system: Microsoft SQL Server 2008

ENTITY - numeric(1,0) (interval)

ID: TD01702.ENTITY

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=2.0000 (exclusive=false), max=2.0000 (exclusive=false)

STUDYID - char(3) (nominal)

ID: TD01702.STUDYID

Study area id

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • ULC
    Upper Lookout Creek
YEAR - numeric(4,0) (interval)

ID: TD01702.YEAR

Year of observation

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=integer, min=1985.0000 (exclusive=false), max=1985.0000 (exclusive=false)

NUMBER - numeric(3,0) (ratio)

ID: TD01702.NUMBER

Log number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=integer, min=1.0000 (exclusive=false), max=280.0000 (exclusive=false)

END_REM - char(1) (nominal)

ID: TD01702.END_REM

The end of log cross-section was removed, 1=large end, 2=small end

Type system: Microsoft SQL Server 2008

Code definitions (2)
  • 2
    Small end
  • 1
    Large end
HWT - numeric(4,1) (ratio)

ID: TD01702.HWT

Radial thickness of heartwood

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=131.0000 (exclusive=false)

SWT - numeric(4,1) (ratio)

ID: TD01702.SWT

Radial thickness of softwood

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=real, min=4.0000 (exclusive=false), max=153.0000 (exclusive=false)

IBT - numeric(4,1) (ratio)

ID: TD01702.IBT

Radial thickness of inner bark

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=real, min=1.0000 (exclusive=false), max=7.0000 (exclusive=false)

OBT - numeric(4,1) (ratio)

ID: TD01702.OBT

Radial thickness of outer bark

Type system: Microsoft SQL Server 2008

Unit: centimeters

Precision: 1.000000

Numeric domain: type=real, min=1.0000 (exclusive=false), max=18.0000 (exclusive=false)

SAMPLEDATE - datetime (dateTime)

ID: TD01702.SAMPLEDATE

Date of observation

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

TD01703 - TD01703

Object name: TD01703.csv

Records: 3457

Attributes: 21

Temporal coverage: 1985-06-19 to 2015-06-16

File size: 287149 byte

Checksum (MD5): b0722b9e51823efada2ed96151f0c07d

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    TD01703.POS, TD01703.SUBSTR, TD01703.NUMBER, TD01703.YEAR
  • notNullConstraint: NOTNULL
    TD01703.POS, TD01703.STUDYID, TD01703.SUBSTR, TD01703.VOLFORM, TD01703.DBCODE, TD01703.ENTITY, TD01703.D1, TD01703.D2, TD01703.NUMBER, TD01703.YEAR, TD01703.SAMPLEDATE
Attributes (21)
DBCODE - char(5) (nominal)

ID: TD01703.DBCODE

FSDB Database code

Type system: Microsoft SQL Server 2008

ENTITY - numeric(1,0) (interval)

ID: TD01703.ENTITY

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=3.0000 (exclusive=false), max=3.0000 (exclusive=false)

STUDYID - char(3) (nominal)

ID: TD01703.STUDYID

Study area id

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • ULC
    Upper Lookout Creek
YEAR - numeric(4,0) (interval)

ID: TD01703.YEAR

Year of observation

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=integer, min=1985.0000 (exclusive=false), max=2015.0000 (exclusive=false)

NUMBER - numeric(3,0) (ratio)

ID: TD01703.NUMBER

Log number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=280.0000 (exclusive=false)

POS - char(1) (nominal)

ID: TD01703.POS

Position of sample (consecutive alpha codes for sample sections) 2=small end

Type system: Microsoft SQL Server 2008

Code definitions (8)
  • D
    Fourth sample from decayed log
  • E
    Fifth sample from decayed log
  • F
    Sixth sample from decayed log , nearest the small end
  • C
    Third sample from decayed log
  • 1
    Initial sample from large end of log
  • A
    First sample from decayed nearest large end of log
  • B
    Second sample from decayed nearest large end of log
  • 2
    Initial sample from small end of log
SUBSTR - char(2) (nominal)

ID: TD01703.SUBSTR

Code for type of substrate sampled

Type system: Microsoft SQL Server 2008

Code definitions (5)
  • OB
    Outer bark
  • IB
    Inner bark
  • HW
    Heartwood
  • SW
    Sapwood
  • W
    Undifferentiated wood; unable to distinguish SW from HW
VOLFORM - char(1) (nominal)

ID: TD01703.VOLFORM

Code for equation to be used in calculating the volume from variables d1, d2 d3

Type system: Microsoft SQL Server 2008

Code definitions (6)
  • 5
    Sector of circle: v=d1*d1*(d2/360)*d3.
  • 3
    Frustrum of cone: d1=large end diam, d2=small end diam, d3=length, v=pi/3*d3*(d1*d1/4 + d1*d2/2 + d2*d2/4).
  • 1
    Cylinder: d1=diameter, d2=length, v=pi/4*d1*d1*d2.
  • 2
    Rectangular paralleloid: d1,d2,d3 are lentghs of sides, v=d1*d2*d3.
  • 4
    Triangular piece: d1=log side of triangle,d2 = base of triangle, d3=thichness of piece, v=a*d3
  • 6
    Donut shape; circle with hollow
D1 - numeric(5,1) (ratio)

ID: TD01703.D1

Length in dimension 1

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 1.000000

Numeric domain: type=real, min=1.0000 (exclusive=false), max=810.0000 (exclusive=false)

D2 - numeric(5,1) (ratio)

ID: TD01703.D2

Length in dimension 2

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 1.000000

Numeric domain: type=real, min=1.0000 (exclusive=false), max=435.0000 (exclusive=false)

D3 - numeric(5,1) (ratio)

ID: TD01703.D3

Length in dimension 3

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 1.000000

Numeric domain: type=real, min=0.4000 (exclusive=false), max=417.0000 (exclusive=false)

D4 - numeric(3,0) (ratio)

ID: TD01703.D4

Length in dimension 4, used only when volform = 4

Type system: Microsoft SQL Server 2008

Unit: millimeters

Precision: 1.000000

Numeric domain: type=real, min=43.0000 (exclusive=false), max=161.0000 (exclusive=false)

WETWTD - numeric(6,0) (ratio)

ID: TD01703.WETWTD

Fresh weight of total sample

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=37.0000 (exclusive=false), max=226450.0000 (exclusive=false)

DRYWTD - numeric(6,0) (ratio)

ID: TD01703.DRYWTD

Oven-dry weight of total sample

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=4.0000 (exclusive=false), max=121229.0000 (exclusive=false)

WETWTM - numeric(5,0) (ratio)

ID: TD01703.WETWTM

Wet weight of moisture content sample (subsample of total sample)

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 1

Numeric domain: type=real, min=504.0000 (exclusive=false), max=26300.0000 (exclusive=false)

DRYWTM - numeric(5,0) (ratio)

ID: TD01703.DRYWTM

Dry weight of moisture content sample (subsample of total sample)

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 1

Numeric domain: type=real, min=288.0000 (exclusive=false), max=9890.0000 (exclusive=false)

WVOL - numeric(3,0) (ratio)

ID: TD01703.WVOL

Volume from water displacement

Type system: Microsoft SQL Server 2008

Unit: milliliters

Precision: 1.000000

Numeric domain: type=real, min=20.0000 (exclusive=false), max=600.0000 (exclusive=false)

CVOL - numeric(6,0) (ratio)

ID: TD01703.CVOL

Volume calculated from measurement

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=real, min=480.0000 (exclusive=false), max=925037.0000 (exclusive=false)

DEN - numeric(5,0) (ratio)

ID: TD01703.DEN

Density of sample

Type system: Microsoft SQL Server 2008

Unit: milliliters

Precision: 1.000000

Numeric domain: type=real, min=1.0000 (exclusive=false), max=1462.0000 (exclusive=false)

MC - numeric(3,0) (ratio)

ID: TD01703.MC

Moisture content of sample

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=real, min=11.0000 (exclusive=false), max=825.0000 (exclusive=false)

SAMPLEDATE - datetime (dateTime)

ID: TD01703.SAMPLEDATE

Date of observation

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

TD01704 - TD01704

Object name: TD01704.csv

Records: 316

Attributes: 25

Temporal coverage: 1985-06-19 to 2015-06-12

File size: 31779 byte

Checksum (MD5): 64c7f9f92173a99b49d93e3215a1c671

Format: headers=1, recordDelimiter=\r\n, fieldDelimiter=,, quoteCharacter=", orientation=column

Constraints (2)
  • primaryKey: PRIMARY
    TD01704.NUMBER, TD01704.YEAR
  • notNullConstraint: NOTNULL
    TD01704.STUDYID, TD01704.DBCODE, TD01704.ENTITY, TD01704.DENS, TD01704.FMS, TD01704.FVS, TD01704.MAXVOL, TD01704.MCS, TD01704.NUMBER, TD01704.TMASS, TD01704.TVOL, TD01704.YEAR, TD01704.SAMPLEDATE
Attributes (25)
DBCODE - char(5) (nominal)

ID: TD01704.DBCODE

FSDB Database code

Type system: Microsoft SQL Server 2008

ENTITY - numeric(1,0) (interval)

ID: TD01704.ENTITY

Entity number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=4.0000 (exclusive=false), max=4.0000 (exclusive=false)

STUDYID - char(3) (nominal)

ID: TD01704.STUDYID

Study area id

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • ULC
    Upper Lookout Creek
YEAR - numeric(4,0) (interval)

ID: TD01704.YEAR

Year of observation

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=integer, min=1985.0000 (exclusive=false), max=2015.0000 (exclusive=false)

NUMBER - numeric(3,0) (ratio)

ID: TD01704.NUMBER

Log number

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=integer, min=1.0000 (exclusive=false), max=280.0000 (exclusive=false)

MAXVOL - numeric(5,0) (ratio)

ID: TD01704.MAXVOL

Maximum volume of log based on exterior measurements on cardtype 1. assume shape is frustrum of cone.

Type system: Microsoft SQL Server 2008

Unit: cubic meters

Precision: 0.000000

Numeric domain: type=real, min=884.0000 (exclusive=false), max=21192.0000 (exclusive=false)

TVOL - numeric(5,0) (ratio)

ID: TD01704.TVOL

Total vol based on length on cardtype 1 and radial measure mentson cardtype 2. incl bark loss. shape is frustrum of cone.

Type system: Microsoft SQL Server 2008

Unit: cubic meters

Precision: 1.000000

Numeric domain: type=real, min=3833.0000 (exclusive=false), max=19013.0000 (exclusive=false)

FVH - numeric(3,0) (ratio)

ID: TD01704.FVH

Fractional volume of heartwood (not calculated for alru). shape is frustrum of cone for this and next 3 variables

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=87.0000 (exclusive=false)

FVI - numeric(3,0) (ratio)

ID: TD01704.FVI

Fractional volume of inner bark (not calc for alru)

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=11.0000 (exclusive=false)

FVO - numeric(3,0) (ratio)

ID: TD01704.FVO

Fractioanl volume of outer bark (for alru this includes in ner bark)

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=21.0000 (exclusive=false)

FVS - numeric(3,0) (ratio)

ID: TD01704.FVS

Fractioanl volume of sapwood

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=8.0000 (exclusive=false), max=100.0000 (exclusive=false)

TMASS - numeric(6,0) (ratio)

ID: TD01704.TMASS

Total dry mass of log.

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 1.000000

Numeric domain: type=integer, min=474.0000 (exclusive=false), max=99041.0000 (exclusive=false)

FMH - numeric(3,0) (ratio)

ID: TD01704.FMH

Fractional mass of heartwood. fmh = (fvh*tvol*denh)/tmass.

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=92.0000 (exclusive=false)

FMI - numeric(3,0) (ratio)

ID: TD01704.FMI

Fractional mass of inner bark. not calculated for alru. see fmh for formula.

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=12.0000 (exclusive=false)

FMO - numeric(3,0) (ratio)

ID: TD01704.FMO

Fractional mass of outer bark. see fmh for formula. for al ru this includes inner bark.

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)

FMS - numeric(3,0) (ratio)

ID: TD01704.FMS

Fractional mass of sapwood. see fmh for formula.

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=100.0000 (exclusive=false)

DENH - numeric(5,3) (ratio)

ID: TD01704.DENH

Mean density (n=2) of heartwood for log.

Type system: Microsoft SQL Server 2008

Unit: grams per milliliter

Precision: 0.001000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=0.6350 (exclusive=false)

DENI - numeric(5,3) (ratio)

ID: TD01704.DENI

Mean density (n=2) of inner bark (not calculated for alru)

Type system: Microsoft SQL Server 2008

Unit: grams per milliliter

Precision: 0.001000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=0.7000 (exclusive=false)

DENO - numeric(5,3) (ratio)

ID: TD01704.DENO

Mean density (n=2) of outer bark. for alru inner and outer bark combined.

Type system: Microsoft SQL Server 2008

Unit: grams per milliliter

Precision: 0.001000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=0.9060 (exclusive=false)

DENS - numeric(5,3) (ratio)

ID: TD01704.DENS

Mean density (n=2) of sapwood.

Type system: Microsoft SQL Server 2008

Unit: grams per milliliter

Precision: 0.001000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=0.6120 (exclusive=false)

MCH - numeric(3,0) (ratio)

ID: TD01704.MCH

Mean moisture content of sapwood (n=2). not calculated for alru.

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=332.0000 (exclusive=false)

MCI - numeric(3,0) (ratio)

ID: TD01704.MCI

Mean moisture content of inner bark (n=2). not calculated for alru.

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=495.0000 (exclusive=false)

MCO - numeric(3,0) (ratio)

ID: TD01704.MCO

Mean moisture content of outer bark (n=2). for alru inner and outer bark combined.

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=467.0000 (exclusive=false)

MCS - numeric(3,0) (ratio)

ID: TD01704.MCS

Mean moisture content fo sapwood (n=2).

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=integer, min=0.0000 (exclusive=false), max=525.0000 (exclusive=false)

SAMPLEDATE - datetime (dateTime)

ID: TD01704.SAMPLEDATE

Date of observation

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

Units
centimeters cm length centimeter meter 0.01 centimeters; .01 meters
millimeters mm length millimeter meter 0.001 millimeters; .001 meters
milliliters ml volume milliliter meterCubed 0.000001 milliliters; 1/1000 of a liter
grams per milliliter g/ml massDensity gramPerMilliliter kilogramPerMeterCubed 1000 grams per milliliter
percent % dimensionless number dimensionless 100 percent; a number
grams g mass gram kilogram 0.001 grams; 0.001 kilogram
cubic meters m3 volume meterCubed meterCubed 1 cubic meters
number number dimensionless number dimensionless 1 dimensionless number, i.e., ratio, count
Related Datasets

No related dataset codes found in the EML text fields.

Related Publications

No publication citations found in this EML file.

Related Files

No related files listed in this EML file.

Intellectual Rights

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.

Licensed

License: N/A

Maintenance

Maintenance update frequency: notPlanned

Description

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

Change History

  • Version1 (1985-01-01)
    Original metadata creation
  • Version2 (2005-06-01)
    Prepared metadata for move from Foxpro to SQL server
  • Version3 (2005-06-03)
    Moved database to SQL server
  • Version8 (2015-11-25)
    Restructured entity; edited attribute names and combined year, month, day to sampledate. Ran QC, recreated SQL structures, uploaded data. All for preparation to load into PASTA.
  • Version10 (2018-06-19)
    Added new 2005 and 2015 data.