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TD018: Nitrogen fixation and respiration potential of conifer logs at Andrews Experimental Forest, 1987 to 2006

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Status: asNeeded
Period: 1987-03-01 to 2006-05-15
Version: 9
Published: 2016-08-29
EDI Package ID: knb-lter-and.3140.9
Source XML: TD018_9.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. 2016. Nitrogen fixation and respiration potential of conifer logs at Andrews Experimental Forest, 1987 to 2006 Long-Term Ecological Research Andrews Forest LTER Site. [Database]. Available: https://andrewsforest-stage.forestry.oregonstate.edu/data/fsdb-data-catalog/TD018 Accessed 2026-05-10.

Abstract

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 maximum.

Coverage

Temporal coverage: 1987-03-01 to 2006-05-15

Geographic coverage: Andrews Experimental Forest

Spatial coverage:

Bounds: W -122.26172200, E -122.10084700, N 44.28196400, S 44.19770400

Purpose

No purpose entries listed in this EML file.

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
  • 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
  • Mark E. Harmon
    Role: Abstractor
    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
  • William T. Hicks
    Role: Other Researcher
    Department of Biology;Bethany College, Bethany, WV, 26032, USA
    Email: whicks@bethanywv.edu
  • Jay M. Sexton
    Role: Other Researcher
    Corvallis, OR, 97331-5752, USA
    Phone: (541) 737-8430
    Email: hexagon@exchangenet.net
  • 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
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

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 maximum. Field Methods - TD018

Methods

Method Steps

Field Methods - TD018
  • During the spring cross-sections 8 cm thick are removed from logs with a chainsaw. These are placed in plastic bag and kept under refrigeration until samples are tested. Two to three samples with a fresh weight of 2 g are removed from each tissue type. These are placed in serum tubes, capped, and incubated at 15°C for 1-2 hours with lab air to determine the respiration rate. The tubes are then purged for 2 minutes with argon, acetylene is injected, and air is injected to give 1% oxygen. Incubations for acetylene reduction are at 15°C for 20-25 hours. Carbon dioxide and ethylene production are measured using a gas chromatograph. Moisture content is calculated after drying the samples 2 days at 70°C.

Sampling

Study Extent
  • Site 1: elevation is 1065m, average annual temperature 8.9 degree C, average annual precipitation is 229cm.
  • Site 4: elevation is 865m, average annual temperature 9.9 degree C, average annual precipitation is 219cm
  • Sampling frequency: irregular
Sampling Description
  • The data are a time series, basically on an annual time step. Regression analysis will be used to test if the rates for species and tissue types changes with time. During any one time the design varies from a split-split plot to a split plot ANOVA. The effects of species, tissue type, or position in the log (top, bottom, side) can be tested.
Spatial Sampling Units
  • Andrews Experimental Forest (HJA)
    W -122.26172200, E -122.10084700, N 44.28196400, S 44.19770400
    Altitude: 1631 to 1631 meter
Software

No software entries listed in this EML file.

Keywords
  • LTER controlled vocabulary: water content (theme), respiration rates (theme), respiration (theme), nitrogen fixation (theme), inorganic nutrients (theme), coarse woody debris (theme), nitrogen (theme), organic matter (theme), terrestrial ecosystems (theme), logs (theme)
  • Andrews Experimental Forest site thesaurus: Long-Term Ecological Research (LTER) (theme), moisture stress (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: Coniferophyta
  • Class: Pinopsida
  • Order: Pinales
  • Family: Pinaceae
  • Genus: Tsuga
  • Species: Tsuga heterophylla
  • Genus: Pseudotsuga
  • Species: Pseudotsuga menziesii
  • Genus: Abies
  • Species: Abies amabilis
  • Family: Cupressaceae
  • Genus: Thuja
  • Species: Thuja plicata
Data Entities
# Entity Metadata Data
1 TD01801
TD01801
Acetylene Reduction and Respiration: Raw Data:
 METADATA DATA
2 TD01802
TD01802
Acetylene Reduction and Respiration: Means and Std. Errors:
 METADATA DATA
3 TD01803
TD01803
Tissue and overall Log Densities:
 METADATA DATA
4 TD01804
TD01804
Weighted average Respiration Rate for Log and Tissue Samples:
 METADATA DATA
Metadata
TD01801 - TD01801

Object name: TD01801.csv

Records: 1832

Attributes: 22

Temporal coverage: 1987-03-15 to 2006-05-15

File size: 184195 byte

Checksum (MD5): 3e4cd1d72baa90b2aa29dd946a16a9c2

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

Constraints (2)
  • primaryKey: PRIMARY
    TD01801.NUMBER, TD01801.POSITION, TD01801.REP, TD01801.SPECIES, TD01801.STUDYID, TD01801.TIME, TD01801.TISSUE, TD01801.YEAR
  • notNullConstraint: NOTNULL
    TD01801.DBCODE, TD01801.DRYWT, TD01801.ENTITY, TD01801.NUMBER, TD01801.OXYGEN, TD01801.POSITION, TD01801.REP, TD01801.SPECIES, TD01801.STUDYID, TD01801.TIME, TD01801.TISSUE, TD01801.YEAR, TD01801.SAMPLEDATE
Attributes (22)
DBCODE - char(5) (nominal)

ID: TD01801.DBCODE

FSDB Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • TD018
    FSDB database code TD018
ENTITY - numeric(2,0) (interval)

ID: TD01801.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(4) (nominal)

ID: TD01801.STUDYID

Location of the sample collection

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • HJA
    Andrews Experimental Forest (HJA)
YEAR - numeric(4,0) (dateTime)

ID: TD01801.YEAR

Year of sample collection

Type system: Microsoft SQL Server 2008

Date format: YYYY

TIME - numeric(4,0) (ratio)

ID: TD01801.TIME

Time in months that the log has been rotting in the field.

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=4.0000 (exclusive=false), max=248.0000 (exclusive=false)

SITE - char(1) (nominal)

ID: TD01801.SITE

Site that the log samples were removed from; refers to sites described under TD14 studies

Type system: Microsoft SQL Server 2008

Code definitions (2)
  • 1
    End of 327 road
  • 4
    W of 350 road near junction of 350 and 1506
SPECIES - char(4) (nominal)

ID: TD01801.SPECIES

Species of the log sampled; follows garrison conventions

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • ABAM
    Abies amabilis
  • PSME
    Pseudotsuga menziesii
  • THPL
    Thuja plicata
  • TSHE
    Tsuga heterophylla
TISSUE - char(2) (nominal)

ID: TD01801.TISSUE

Tissue type of the log sampled

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • HW
    Heartwood
  • IB
    Inner bark
  • OB
    Outer bark
  • SW
    Sapwood
POSITION - char(1) (nominal)

ID: TD01801.POSITION

Position in cross-section sampled

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • T
    Top of log
  • S
    Side of log
  • B
    Bottom of log
  • M
    Mixed position; taken from any position randomly
NUMBER - numeric(4,0) (interval)

ID: TD01801.NUMBER

Number of test tube used for incubation

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=1.0000 (exclusive=false), max=741.0000 (exclusive=false)

REP - char(1) (nominal)

ID: TD01801.REP

Replicate for species and tissue type

Type system: Microsoft SQL Server 2008

ETHYLENE - numeric(6,3) (ratio)

ID: TD01801.ETHYLENE

Ethylene produced during incubation

Type system: Microsoft SQL Server 2008

Unit: parts per million

Precision: 0.001000

Numeric domain: type=real, min=-3.8800 (exclusive=false), max=75.9250 (exclusive=false)

ETIME - numeric(3,0) (ratio)

ID: TD01801.ETIME

Length of the ethylene incubation

Type system: Microsoft SQL Server 2008

Unit: number of hours

Precision: 1.000000

Numeric domain: type=natural, min=0.0000 (exclusive=false), max=29.0000 (exclusive=false)

PRODE - numeric(7,3) (ratio)

ID: TD01801.PRODE

Production rate of ethylene on a gram dry weight per day basis

Type system: Microsoft SQL Server 2008

Unit: nanomoles per gram per day

Precision: 0.001000

Numeric domain: type=real, min=-3.7090 (exclusive=false), max=129.7900 (exclusive=false)

CO2 - numeric(6,3) (ratio)

ID: TD01801.CO2

CO2 increase over incubation

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.001000

Numeric domain: type=real, min=-0.3600 (exclusive=false), max=3.3000 (exclusive=false)

TIMECO2 - numeric(5,2) (ratio)

ID: TD01801.TIMECO2

Length of the CO2 incubation

Type system: Microsoft SQL Server 2008

Unit: number of hours

Precision: 0.010000

Numeric domain: type=real, min=-0.0100 (exclusive=false), max=4.7500 (exclusive=false)

RESPIR - numeric(7,4) (ratio)

ID: TD01801.RESPIR

Respiration rate at 15 deg C (dry weight basis)

Type system: Microsoft SQL Server 2008

Unit: micromoles per gram per hour

Precision: 0.000100

Numeric domain: type=real, min=-2.4400 (exclusive=false), max=9.7300 (exclusive=false)

DRYWT - numeric(4,2) (ratio)

ID: TD01801.DRYWT

Dry weight

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.1300 (exclusive=false), max=3.8300 (exclusive=false)

WETWT - numeric(4,2) (ratio)

ID: TD01801.WETWT

Wet weight

Type system: Microsoft SQL Server 2008

Unit: grams

Precision: 0.010000

Numeric domain: type=real, min=0.9500 (exclusive=false), max=3.7600 (exclusive=false)

MC - numeric(6,1) (ratio)

ID: TD01801.MC

Moisture content of the samples

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.100000

Numeric domain: type=real, min=6.5000 (exclusive=false), max=1488.0000 (exclusive=false)

OXYGEN - numeric(2,0) (ratio)

ID: TD01801.OXYGEN

Oxygen at start of the ethylene incubation

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 1.000000

Numeric domain: type=whole, min=0.0000 (exclusive=false), max=2.0000 (exclusive=false)

SAMPLEDATE - date (dateTime)

ID: TD01801.SAMPLEDATE

Date of sample collection

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

TD01802 - TD01802

Object name: TD01802.csv

Records: 250

Attributes: 16

File size: 17926 byte

Checksum (MD5): 96c5ff4b0d432ac9c437461116649de5

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

Constraints (2)
  • primaryKey: PRIMARY
    TD01802.SPECIES, TD01802.STUDYID, TD01802.TIME, TD01802.TISSUE
  • notNullConstraint: NOTNULL
    TD01802.DBCODE, TD01802.ENTITY, TD01802.MC, TD01802.NE, TD01802.NMC, TD01802.NRESP, TD01802.MEANPRODE, TD01802.MEANRESP, TD01802.SPECIES, TD01802.STDERRE, TD01802.STDERRMC, TD01802.STERRR, TD01802.STUDYID, TD01802.TIME, TD01802.TISSUE
Attributes (16)
DBCODE - char(5) (nominal)

ID: TD01802.DBCODE

FSDB Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • TD018
    FSDB database code TD018
ENTITY - numeric(2,0) (interval)

ID: TD01802.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(4) (nominal)

ID: TD01802.STUDYID

Location of the sample collection

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • HJA
    Andrews Experimental Forest (HJA)
YEAR - numeric(4,0) (dateTime)

ID: TD01802.YEAR

Year of sample collection

Type system: Microsoft SQL Server 2008

Date format: YYYY

TIME - numeric(4,0) (ratio)

ID: TD01802.TIME

Time in months that the log has been rotting in the field.

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=0.0000 (exclusive=false), max=140.0000 (exclusive=false)

SPECIES - char(4) (nominal)

ID: TD01802.SPECIES

Species of the log sampled; follows garrison conventions

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • ABAM
    Abies amabilis
  • PSME
    Pseudotsuga menziesii
  • THPL
    Thuja plicata
  • TSHE
    Tsuga heterophylla
TISSUE - char(2) (nominal)

ID: TD01802.TISSUE

Tissue type of the log sampled

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • HW
    Heartwood
  • IB
    Inner bark
  • OB
    Outer bark
  • SW
    Sapwood
MEANPRODE - numeric(8,3) (ratio)

ID: TD01802.MEANPRODE

Mean production rate of ethylene on a gram dry weight per day basis

Type system: Microsoft SQL Server 2008

Unit: nanomoles per gram per day

Precision: 0.001000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=28.7100 (exclusive=false)

STDERRE - numeric(7,3) (ratio)

ID: TD01802.STDERRE

Standard error of ethylene production. note that all negative valuses weres et to 0 before calculation.

Type system: Microsoft SQL Server 2008

Unit: nanomoles per gram per day

Precision: 0.001000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=20.2940 (exclusive=false)

NE - numeric(3,0) (interval)

ID: TD01802.NE

Number of samples used to calculate the mean ethylene production

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=whole, min=0.0000 (exclusive=false), max=24.0000 (exclusive=false)

MEANRESP - numeric(7,4) (ratio)

ID: TD01802.MEANRESP

Mean respiration rate (dry weight basis)

Type system: Microsoft SQL Server 2008

Unit: micromoles per gram per hour

Precision: 0.000100

Numeric domain: type=real, min=0.0000 (exclusive=false), max=8.7240 (exclusive=false)

STERRR - numeric(7,4) (ratio)

ID: TD01802.STERRR

Standard error of the respiration measurements (dry weight basis)

Type system: Microsoft SQL Server 2008

Unit: micromoles per gram per hour

Precision: 0.000100

Numeric domain: type=real, min=0.0000 (exclusive=false), max=1.4245 (exclusive=false)

NRESP - numeric(3,0) (interval)

ID: TD01802.NRESP

Number of samples used to compute the rrespiration rate

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=3.0000 (exclusive=false), max=24.0000 (exclusive=false)

MC - numeric(6,1) (ratio)

ID: TD01802.MC

Moisture content of the samples

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.100000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=575.6000 (exclusive=false)

STDERRMC - numeric(5,1) (ratio)

ID: TD01802.STDERRMC

Standard error of the moisture content

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.100000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=230.0000 (exclusive=false)

NMC - numeric(3,0) (interval)

ID: TD01802.NMC

Number of samples used to calculate the moisture content

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=whole, min=0.0000 (exclusive=false), max=24.0000 (exclusive=false)

TD01803 - TD01803

Object name: TD01803.csv

Records: 256

Attributes: 10

Temporal coverage: 1991-03-18 to 1998-03-17

File size: 13398 byte

Checksum (MD5): 2eaa4614cb11fe08c6b200f55a8b6a91

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

Constraints (2)
  • primaryKey: PRIMARY
    TD01803.SPECIES, TD01803.SUB, TD01803.TIME, TD01803.YEAR
  • notNullConstraint: NOTNULL
    TD01803.DBCODE, TD01803.ENTITY, TD01803.LOGDEN, TD01803.SPECIES, TD01803.STUDYID, TD01803.SUB, TD01803.SUBDEN, TD01803.TIME, TD01803.YEAR
Attributes (10)
DBCODE - char(5) (nominal)

ID: TD01803.DBCODE

FSDB Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • TD018
    FSDB database code TD018
ENTITY - numeric(2,0) (interval)

ID: TD01803.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(4) (nominal)

ID: TD01803.STUDYID

Location of the sample collection

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • HJA
    Andrews Experimental Forest (HJA)
YEAR - numeric(4,0) (dateTime)

ID: TD01803.YEAR

Year of sample collection

Type system: Microsoft SQL Server 2008

Date format: YYYY

TIME - numeric(4,0) (ratio)

ID: TD01803.TIME

Time in months that the log has been rotting in the field.

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=0.0000 (exclusive=false), max=140.0000 (exclusive=false)

SUB - char(2) (nominal)

ID: TD01803.SUB

Tissues of the log sampled. also called substrate.

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • HW
    Hardwood
  • IB
    Inner bark
  • OB
    Outer bark
  • SW
    Softwood
SPECIES - char(4) (nominal)

ID: TD01803.SPECIES

Species of the log sampled; follows garrison conventions

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • ABAM
    Abies amabilis
  • PSME
    Pseudotsuga menziesii
  • THPL
    Thuja plicata
  • TSHE
    Tsuga heterophylla
SUBDEN - numeric(5,3) (ratio)

ID: TD01803.SUBDEN

Mean density of tissue at sample time.

Type system: Microsoft SQL Server 2008

Unit: grams per cubic centimeter

Precision: 0.001000

Numeric domain: type=real, min=0.1480 (exclusive=false), max=0.5710 (exclusive=false)

LOGDEN - numeric(5,3) (ratio)

ID: TD01803.LOGDEN

Mean density of the log at sample time. used to calcualte the relative mass of a tissue type.

Type system: Microsoft SQL Server 2008

Unit: grams per cubic centimeter

Precision: 0.001000

Numeric domain: type=real, min=0.1920 (exclusive=false), max=0.4540 (exclusive=false)

SAMPLEDATE - date (dateTime)

ID: TD01803.SAMPLEDATE

Date of sample collection

Type system: Microsoft SQL Server 2008

Date format: YYYY-MM-DD

TD01804 - TD01804

Object name: TD01804.csv

Records: 307

Attributes: 9

File size: 11755 byte

Checksum (MD5): 16e5c2cd989c0385b6a9005fc88d9117

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

Constraints (2)
  • primaryKey: PRIMARY
    TD01804.SPECIES
  • notNullConstraint: NOTNULL
    TD01804.DBCODE, TD01804.ENTITY, TD01804.SPECIES, TD01804.STUDYID
Attributes (9)
DBCODE - char(5) (nominal)

ID: TD01804.DBCODE

FSDB Database code

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • TD018
    FSDB database code TD018
ENTITY - numeric(2,0) (interval)

ID: TD01804.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(4) (nominal)

ID: TD01804.STUDYID

Location of the sample collection

Type system: Microsoft SQL Server 2008

Code definitions (1)
  • HJA
    Andrews Experimental Forest (HJA)
TIME - numeric(4,0) (ratio)

ID: TD01804.TIME

Time in months that the log has been rotting in the field.

Type system: Microsoft SQL Server 2008

Unit: number

Precision: 1.000000

Numeric domain: type=natural, min=1.0000 (exclusive=false), max=140.0000 (exclusive=false)

SPECIES - char(4) (nominal)

ID: TD01804.SPECIES

Species of the log sampled; follows garrison conventions

Type system: Microsoft SQL Server 2008

Code definitions (4)
  • ABAM
    Abies amabilis
  • PSME
    Pseudotsuga menziesii
  • THPL
    Thuja plicata
  • TSHE
    Tsuga heterophylla
SECTION - char(1) (nominal)

ID: TD01804.SECTION

Cross-section of log the tissue samples were pooled from.

Type system: Microsoft SQL Server 2008

LOGETHYL - numeric(8,3) (ratio)

ID: TD01804.LOGETHYL

Weighted mean rate of ethylene production for entire log. tissue samples were weighted by relative mass (dry weight basis)

Type system: Microsoft SQL Server 2008

Unit: nanomoles per gram per day

Precision: 0.001000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=8.9640 (exclusive=false)

LOGRESP - numeric(7,2) (ratio)

ID: TD01804.LOGRESP

Weighted mean respiration potential at 15 deg C for entire logs. tissue samples were weighted by relative mass (dry weight basis)

Type system: Microsoft SQL Server 2008

Unit: micrograms per gram per day

Precision: 0.010000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=2.8000 (exclusive=false)

LOGMC - numeric(5,1) (ratio)

ID: TD01804.LOGMC

Weighted mean moisture content for logs. tissue values were weighted by relative mass.

Type system: Microsoft SQL Server 2008

Unit: percent

Precision: 0.100000

Numeric domain: type=real, min=0.0000 (exclusive=false), max=438.0000 (exclusive=false)

Units
parts per million ppm massDensity partsPerMillion kilogramPerMeterCubed 0.001 parts per million
number of hours hours time nominalHour second 3600 one hour excluding leap seconds, 3600 seconds
grams g mass gram kilogram 0.001 grams; 0.001 kilogram
micromoles per gram per hour umol/g*hr amountOfSubstanceWeightFlux micromolePerGramPerHour molePerKilogramPerSecond 3.6 micromoles per g per hour
grams per cubic centimeter g/cm3 massDensity gramPerCentimeterCubed kilogramPerMeterCubed 1000 grams per cubic centimeter
nanomoles per gram per day nmol/g*day amountOfSubstanceWeightFlux nanomolePerGramPerDay molePerKilogramPerSecond 0.0864 nanomoles per g per day
percent % dimensionless number dimensionless 100 percent; a number
micrograms per gram per day ug/g*day massPerMassRate microgramPerGramPerDay kilogramPerKilogramPerSecond 0.0864 micrograms per gram per day
number number dimensionless number dimensionless 1 dimensionless number, i.e., ratio, count
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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: asNeeded

Description

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

Change History

  • Version1 (1990-07-01)
    Original metadata creation. Data were reformatted from LOTUS files developed by Dr. Robert Griffiths in July 1990.
  • Version2 (2002-02-18)
    Metadata restructured and moved into SQLServer metadata database LTERMETA. Data moved into SQLServer database FSDBDATA.
  • Version7 (2012-07-12)
    Modified TIME field in entity 1 to represent time in months rather than days. Added 2006 raw data to entity 1.
  • Version8 (2015-12-17)
    Prepared database for upload to PASTA with new CSV files with proper delimiter. Created truetype date in entity 1, converted time from days to months for entites 2-4 based on 2012 update to entity 1. Ran QC, recreated SQL structures.