uid=AND,o=lter,dc=ecoinformatics,dc=org all public read TN021 Kate Lajtha

Oregon State University;Dept. of Botany and Plant Pathology;2059 Cordley Hall Corvallis OR 97331 USA

(541) 737-5674 lajthak@science.oregonstate.edu http://cropandsoil.oregonstate.edu/content/kate-lajtha Kate Lajtha

Oregon State University;Dept. of Botany and Plant Pathology;2059 Cordley Hall Corvallis OR 97331 USA

(541) 737-5674 lajthak@science.oregonstate.edu http://cropandsoil.oregonstate.edu/content/kate-lajtha Principal Investigator Derek Pierson piersond@oregonstate.edu Other Researcher Phillip Sollins

Emeritus, Oregon State University;Forest Ecosystems & Society Corvallis OR 97331-5752 USA

(541) 737-6582 phil.sollins@oregonstate.edu Other Researcher Hayley Peter-Contesse petercoh@oregonstate.edu Other Researcher April Strid Other Researcher Fox Sparky Peterson 404-580-5016 fox@tinybike.net Other Researcher Jennifer Dawn Wig

Forest Ecosystems and Society

Other Researcher Kim Townsend

Botany and Plant Pathology;Oregon State University Corvallis OR 97331 USA

townseki@oregonstate.edu zoeykim@aol.com Other Researcher Kate Lajtha

Oregon State University;Dept. of Botany and Plant Pathology;2059 Cordley Hall Corvallis OR 97331 USA

(541) 737-5674 lajthak@science.oregonstate.edu http://cropandsoil.oregonstate.edu/content/kate-lajtha Creator 2013-01-03 The Detrital Input and Removal Treatment (DIRT) Project was established to assess how rates and sources of plant litter inputs influence accumulations or losses of organic matter in forest soils. DIRT employs chronic additions and exclusions of aboveground litter inputs and exclusion of root ingrowth to permanent plots at eight forested and two shrub/grass sites in the northern hemisphere to investigate how soil organic matter (SOM) dynamics are influenced by plant detrital inputs across ecosystem and soil types. The long-term DIRT study at the H.J. Andrews Experimental Forest was established in an old-growth forest stand on the valley floor and aims to address how detrital quality and quantity control soil organic matter accumulation and stabilization. The DIRT plots consist of treatments that double leaf litter, double woody debris inputs, exclude aboveground litter inputs, remove root inputs via trenching, or remove all organic matter inputs. We measured changes in soil solution chemistry with depth, and conducted long-term incubations of bulk soils from different treatments in order to elucidate effects of detrital inputs on the relative amounts and lability of different soil C pools. These data include various properties of the DIRT plots obtained during re-measurements at various intervals. C and N concentrations and content in soil, CO2 efflux, and soil solution chemistry are measured from bulk samples to 1 m depth, field respiration measurements, and lysimeters at 2 depths, respectively, and assessed at Oregon State University. biogeochemistry decomposition carbon cycling litterfall nutrients terrestrial ecosystems LTER controlled vocabulary Harvard Forest DIRT plots: http://harvardforest.fas.harvard.edu/dirt-detritus-input-and-removal-treatments University of Michigan Biological Station DIRT plots: http://umbs.lsa.umich.edu/research/researchsite/umbs-dirt-plots.htm DIRT is funded under the DEB-12570372.Related PublicationsYano, Yuriko; Lajtha, Kate; Sollins, Phillip; Caldwell, Bruce A. 2004. Chemical and seasonal controls on the dynamics of dissolved organic matter in a coniferous old-growth stand in the Pacific Northwest, USA. Biogeochemistry. 71: 197-223.Sulzman, Elizabeth W.; Brant, Justin B.; Bowden, Richard D.; Lajtha, Kate. 2005. Contribution of aboveground litter, belowground litter, and rhizosphere respiration to total soil CO2 efflux in an old growth coniferous forest. Biogeochemistry. 73: 231-256.Lajtha, K.; Crow, S. E.; Yano, Y.; Kaushal, S. S.; Sulzman, E.; Sollins, P.; Spears, J. D. H. 2005. Detrital controls on soil solution N and dissolved organic matter in soils: a field experiment. Biogeochemistry. 76: 261-281.Spears, J. D. H.; Lajtha, K. 2004. The imprint of coarse woody debris on soil chemistry in the western Oregon Cascades. Biogeochemistry. 71: 163-175.Holub, Scott M.; Lajtha, Kate; Spears, Julie D. H.; Tóth, János A.; Crow, Susan E.; Caldwell, Bruce A.; Papp, Mária; Nagy, Péter T. 2005. Organic matter manipulations have little effect on gross and net nitrogen transformations in two temperate forest mineral soils in the USA and central Europe. Forest Ecology and Management. 214: 320-330.Crow, Susan E.; Sulzman, Elizabeth W.; Rugh, William D.; Bowden, Richard D.; Lajtha, Kate. 2006. Isotopic analysis of respired CO2 during decomposition of separated soil organic matter pools. Soil Biology and Biochemistry. 38: 3279-3291.Brant, Justin. 2005. Controls of microbial community composition and function in forest soils. Corvallis, OR: Oregon State University. 105 p. M.S. thesis.Sollins, Phillip; Swanston, Christopher; Kleber, Markus; Filley, Timothy; Kramer, Marc; Crow, Susan; Caldwell, Bruce A.; Lajtha, Kate; Bowden, Richard. 2006. Organic C and N stabilization in a forest soil: evidence from sequential density fractionation. Soil Biology and Biochemistry. 38: 3313-3324.Brant, Justin B.; Sulzman, Elizabeth W.; Myrold, David D. 2006. Microbial community utilization of added carbon substrates in response to long-term carbon input manipulation. Soil Biology and Biochemistry. 38 : 2219-2232.Brant, Justin B.; Myrold, David D.; Sulzman, Elizabeth W. 2006. Root controls on soil microbial community structure in forest soils. Oecologia. 148(4): 650-659.Crow, Susan E.; Swanston, Christopher W.; Lajtha, Kate; Brooks, J. Renée; Keirstead, Heath. 2007. Density fractionation of forest soils: methodological questions and interpretation of incubation results and turnover time in an ecosystem context. Biogeochemistry. 85: 69-90.Crow, Susan E. 2006. Characteristics of soil organic matter in two forest soils. Corvallis, OR: Oregon State University. Ph.D. dissertation.Yarwood, Stephanie; Brewer, Elizabeth; Yarwood, Rockie; Lajtha, Kate; Myrold, David. 2013. Soil Microbe Active Community Composition and Capability of Responding to Litter Addition after 12 Years of No Inputs. Applied and Environmental Microbiology. 79(4): 1385-1392.Strid, April; Lee, Baek Soo; Lajtha, Kate. 2016. Homogenization of detrital leachate in an old-growth coniferous forest, OR: DOC fluorescence signatures in soils undergoing long-term litter manipulations. Plant and Soil. 408(1): 133-148. doi: 10.1007/s11104-016-2914-1Lajtha, Kate; Bowden, Richard D.; Crow, Susan; Fekete, Istvan; Kotroczo, Zsolt; Plante, Alain; Simpson, Myrna J.; Nadelhoffer, Knute J. 2018. The detrital input and removal treatment (DIRT) network: Insights into soil carbon stabilization. Science of The Total Environment. 640-641: 1112-1120. doi: doi.org/10.1016/j.scitotenv.2018.05.388Related FilesTitle: The Detrital Input and Removal Experiment (DIRT) network websiteDescription: a link to the DIRT websiteURL: https://dirtnet.wordpress.com/Title: HJA DIRT plotsDescription: Spatial representation of the DIRT plots with numbering from John DixonURL: https://andrewsforest.oregonstate.edu/data/studies/tn021/dirt_plot_numbering.png 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. http://andlter.forestry.oregonstate.edu/data/abstract.aspx?dbcode=TN021 1999-12-01 2011-04-15 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 Soil organic matter (SOM) is the terrestrial biosphere's largest pool of organic carbon and is an integral part of the global C cycle. Therefore, changes in SOM formation and decomposition due to climate change, land management, disturbance or other factors can feed back to the climate system to either sequester CO2 into organic forms or release it to the atmosphere. Despite its pivotal role in the global C cycle, the relative importance and linkages of the various biological, chemical and physical processes regulating SOM balances are not well understood. Although forests contain more than 3x the soil C (575 x 1015 g) of agricultural lands (180 x 1015 g), forest SOM dynamics and their relation to detrital inputs and soil biotic processing remain poorly understood. Even fundamental relationships, such as between mean annual temperature and SOM turnover rates, are controversial. A major challenge for environmental science is to develop a predictive understanding of how climate and vegetation interact to determine how detritus and soil biota affect SOM formation and stability. Over the years, our informal group of ecologists, biogeochemists and ecosystem modelers has been using a common set of experimental manipulations, referred to collectively as DIRT (Detritus Input and Removal Treatments), to assess how rates and sources of plant inputs control the accumulation and dynamics of SOM and nutrients in forest soils over decadal time scales. The original DIRT treatments consist of chronically altering plant inputs to forest soils by regularly removing surface litter from permanent plots and adding it to others. Our network of DIRT sites now includes four operational temperate forest sites. The central goal of the DIRT project is to assess how rates and sources of plant litter inputs control the accumulation and dynamics of organic matter and nutrients in forest soils over decadal time scales. The project examines processes at multiple levels, across decades and centuries, exploring the intricate interconnections of biology and chemistry that lead to the formation of humic materials over these hitherto unexplored long time spans. Our plots are part of an informal network of similar experimental treatments that span a significant climatic gradient and that encompass both coniferous and deciduous forests, and that vary widely in anthropogenic N loading. Current DIRT sites include Harvard Forest, MA (oak forest, established 1991); Bousson Experimental Research Reserve, PA (deciduous forest, established 1992); Sikfokut Forest, Hungary (turkey oak forest, established 2001), and the Michigan Biological Station, MI (pine forest, established 2004).

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

irregular Study code and preliminary metadata established Version1 2012-08-03 uploaded metadata and data from XLS spreadsheets for all 5 entities. Ran QC. Uploaded data to SQL. Version2 2013-01-03 Information Manager

Andrews Forest LTER Program US Forest Service Pacific Northwest Research Station 3200 SW Jefferson Way Corvallis OR 97331

hjaweb@fsl.orst.edu http://andrewsforest.oregonstate.edu/ Fox Sparky Peterson 404-580-5016 fox@tinybike.net Andrews Forest LTER Site

Forest Ecosystems and Society Department in Forestry Oregon State University 201K Richardson Hall Corvallis OR 97331-5752

(541) 737-8480 lterweb@fsl.orst.edu http://andrewsforest.oregonstate.edu/ Field Methods - TN021 The DIRT plots consist of 15 plots of 100 square meters located in a flat area on the H.J. Andrews experimental forest. 6 treatments are used for detrital inputs and removal: control, no litter, double litter, double wood, no roots, and no inputs. To create double litter plots, litter is removed annually from the "no litter" plots and put on the double litter plots. To create double wood, mulch is added to the system. To create no roots, the plot is trenched around the outside so that roots cannot penetrate. To create no inputs, trenching and removal are conducted. On each plot are five lysimeters which are collected with rain events when the weather permits. Soil respiration chambers also exist. Bulk soil for CHN analysis is collected from a nearby location using Oakfield corers. Unlike other DIRT sites, AND adds a location that is wetter and has much lower inputs of atmospheric N and much larger inputs of coarse woody debris than the other sites. Plots are sited in the low-elevation Douglas-fir/western hemlock zone on Andic soils of volcanic origin. These soils are of low density and highly sorptive, potentially leading to different nutrient dynamics than other DIRT sites. Additionally, the "double wood" treatment is implemented on Andrews, using mulch to simulate increased woody debris. Sampling frequency: annually DIRT plots were established at the HJ Andrews Experimental forest in 1997 with USDA support. There are 15 plots on the forest, 2 for each treatment, as well as some "split plots" to address dynamics at a finer scale. The plots are about 10m - 15m (about 100 m squared) to account for the extreme forest floor heterogeneity. Unlike other DIRT sites, HJ Andrews Experimental forest adds a location that is wetter and has much lower inputs of atmospheric N and much larger inputs of coarse woody debris than the other sites. Plots are sited in the low-elevation Douglas-fir/western hemlock zone on Andic soils of volcanic origin. These soils are of low density and highly sorptive, potentially leading to different nutrient dynamics than other DIRT sites. Additionally, the "double wood" treatment is implemented on Andrews, using mulch to simulate increased woody debris. Andrews Experimental Forest (HJA) -122.26172200 -122.10084700 44.28196400 44.19770400 1631 1631 meter HJA DIRT Plots -122.22326000 -122.22175900 44.23097600 44.23035000 HJA DIRT Plot 01 -122.22322500 -122.22322500 44.23064300 44.23064300 HJA DIRT Plot 02 -122.22311000 -122.22311000 44.23053500 44.23053500 HJA DIRT Plot 03 -122.22299100 -122.22299100 44.23038000 44.23038000 HJA DIRT Plot 04 -122.22286400 -122.22286400 44.23054200 44.23054200 HJA DIRT Plot 05 -122.22293800 -122.22293800 44.23070300 44.23070300 HJA DIRT Plot 07 -122.22264600 -122.22264600 44.23067200 44.23067200 HJA DIRT Plot 08 -122.22247600 -122.22247600 44.23080900 44.23080900 HJA DIRT Plot 10 -122.22211500 -122.22211500 44.23088700 44.23088700 HJA DIRT Plot 11 -122.22192600 -122.22192600 44.23091400 44.23091400 HJA DIRT Plot 12 -122.22175900 -122.22175900 44.23088700 44.23088700 HJA DIRT Plot 13 -122.22250100 -122.22250100 44.23097600 44.23097600 HJA DIRT Plot 14 -122.22305700 -122.22305700 44.23081900 44.23081900 HJA DIRT Plot 16 -122.22326000 -122.22326000 44.23035000 44.23035000 HJA DIRT Plot 17 -122.22273500 -122.22273500 44.23038900 44.23038900 HJA DIRT Plot 19 -122.22318000 -122.22318000 44.23067100 44.23067100 HJA DIRT Plot 49 -122.22277800 -122.22277800 44.23056100 44.23056100 Sherri L. Johnson

US Forest Service ;Pacific NW Research Station ;3200 SW Jefferson Way Corvallis OR 97331 USA

541-758-7771 sherri.johnson2@usda.gov sherri.johnson@oregonstate.edu https://www.fs.fed.us/research/people/profile.php?alias=sherrijohnson Principal Investigator Julia A. Jones

Oregon State University;Department of Geosciences; Wilkinson Hall 104 Corvallis OR 97331-5506 USA

(541) 737-1224 Julia.Jones@oregonstate.edu geojulia@comcast.net http://ceoas.oregonstate.edu/profile/jones/ http://orcid.org/0000-0001-9429-8925 Principal Investigator Matthew G Betts

Department of Forest Ecosystems and Society; 201E Richardson Hall; College of Forestry; Oregon State University Corvallis OR 97331

(541) 737-3841 matt.betts@oregonstate.edu http://www.fsl.orst.edu/flel/index.htm Principal Investigator Michael P. Nelson

Department of Forest Ecosystems and Society; 201K Richarson Hall; College of Forestry; Oregon State University Corvallis OR 97331

541-737-9221 mpnelson@oregonstate.edu http://www.michaelpnelson.com http://orcid.org/0000-0001-6917-4752 Principal Investigator David Bell david.bell@usda.gov david.bell@oregonstate.edu https://lemma.forestry.oregonstate.edu/about/david-bell Principal Investigator 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. 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 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. 1 TN02101 Density Fractionation; carbon and nitrogren content by fraction: TN02101.csv 10540 3d5a1ffbf75cec3c65c7c3ac5d8f1df5 1 \r\n column , " http://andlter.forestry.oregonstate.edu/ltermeta/ltersearch/dataaccess.aspx?docid=TN02101_v1.csv 1999-04-12 1999-11-26 DBCODE Database Code (assigned by FSDB data manager) char(5) TN021 FSDB database code TN021 ENTITY Entity number (data table number) numeric(2,0) number 1 natural 1.0000 1.0000 YEAR Year of sampling numeric(4,0) year (yyyy) 1 natural 1999.0000 1999.0000 FRACTION Density fraction of carbon in g/cm3 char(5) 1.65 1.65 g/cm3 density fraction of carbon 1.85 1.85 g/cm3 density fraction of carbon 2.4 2.4 g/cm3 density fraction of carbon 2.65 2.65 g/cm3 density fraction of carbon >2.65 >2.65 g/cm3 density fraction of carbon 2.0 2.0 g/cm3 density fraction of carbon SAMPLE_NO Sample Code numeric(2,0) number 1 whole 1.0000 18.0000 PLOT Plot Code char(7) DIRT_01 HJA DIRT Plot 01 DIRT_02 HJA DIRT Plot 02 DIRT_03 HJA DIRT Plot 03 DIRT_04 HJA DIRT Plot 04 DIRT_05 HJA DIRT Plot 05 DIRT_06 HJA DIRT Plot 06 DIRT_07 HJA DIRT Plot 07 DIRT_08 HJA DIRT Plot 08 DIRT_10 HJA DIRT Plot 10 DIRT_11 HJA DIRT Plot 11 DIRT_12 HJA DIRT Plot 12 DIRT_13 HJA DIRT Plot 13 DIRT_14 HJA DIRT Plot 14 DIRT_16 HJA DIRT Plot 16 DIRT_17 HJA DIRT Plot 17 DIRT_19 HJA DIRT Plot 19 DIRT_49 HJA DIRT Plot 49 DIRT_69 HJA DIRT Plot 69 TREAT Treatment char(10) 2x litter Double litter - aboveground inputs are doubled by adding litter from No Litter plots. 2x wood Double wood - woody inputs are doubled by dding shredded course woody debris. control Control - normal litter inputs are allowed. no input No Inputs - combined treatments from No Litter and No Roots treatments. no root NoRoots - roots are excluded by inserting barriers around plots in backfilled trenches. no litter No Litter - Aboveground inputs are prevented by seasonal removals. SOIL_MASS_WET Mass of soil sample prior to drying numeric(6,3) grams 1 real 50.0000 50.0900 SOIL_MASS_DRY Dry mass of soil sample at 50 degrees celcius numeric(6,3) grams 1 real 0.0000 46.4600 PCT_C_ALL Average %C in all soil fractions of the soil sample numeric(7,4) percent 1 real 0.0000 100.0000 PCT_N_ALL Average %N in all soil fractions of the soil sample numeric(6,4) percent 1 real 0.0000 100.0000 SOIL_MASS_FRACTION Dry mass of soil subsample fraction at 50 degrees celcius numeric(6,3) grams 1 real 0.8000 28.9000 PCT_C_FRACTION Percent C in the dried subsample fraction numeric(5,2) percent 1 real 0.0000 100.0000 PCT_N_FRACTION Percent N in the dried subsample fraction numeric(4,2) percent 1 real 0.0000 100.0000 MGC_GSOIL_FRACTION millgrams of C per gram of subsample fraction numeric(6,3) milligrams 1 real 0.0100 53.5000 MGC_FRACTION_GSOIL_ALL milligrams of C in fraction per gram of bulk soil numeric(8,3) milligrams per gram 1 real 0.2400 1160.3500 MGN_GSOIL_FRACTION milligrams of N per gram of subsample fraction numeric(6,3) milligrams 1 real 0.0800 42.8200 MGN_FRACTION_GSOIL_ALL milligrams of N in fraction per gram of bulk soil numeric(7,3) milligrams per gram 1 real 0.0200 934.4400 PRIMARY TN02101.FRACTION TN02101.PLOT TN02101.SAMPLE_NO TN02101.YEAR NOTNULL TN02101.DBCODE TN02101.ENTITY TN02101.FRACTION TN02101.MGC_FRACTION_GSOIL_ALL TN02101.MGC_GSOIL_FRACTION TN02101.MGN_FRACTION_GSOIL_ALL TN02101.MGN_GSOIL_FRACTION TN02101.PCT_C_ALL TN02101.PCT_C_FRACTION TN02101.PCT_N_ALL TN02101.PCT_N_FRACTION TN02101.PLOT TN02101.SAMPLE_NO TN02101.SOIL_MASS_DRY TN02101.SOIL_MASS_FRACTION TN02101.SOIL_MASS_WET TN02101.TREAT TN02101.YEAR 90 2 TN02102 Soil sample wet and dry weights: TN02102.csv 934 f389b9fa3d66cc1e222f1b1f80f1e303 1 \r\n column , " http://andlter.forestry.oregonstate.edu/ltermeta/ltersearch/dataaccess.aspx?docid=TN02102_v1.csv 1999-04-12 1999-11-26 DBCODE Database Code (assigned by FSDB data manager) char(5) TN021 FSDB database code TN021 ENTITY Entity number (data table number) numeric(2,0) number 1 natural 2.0000 2.0000 SAMPLE randomly assigned sample number to determine uniqueness of dataset numeric(2,0) number 1 natural 1.0000 18.0000 YEAR Year of sampling numeric(4,0) year (yyyy) 1 natural 1999.0000 1999.0000 SOIL_MASS_WET Mass of soil sample prior to drying numeric(6,3) grams 1 real 4.9000 5.9000 SOIL_MASS_50C mass of the soil sample dried at 50 degrees C numeric(5,3) grams 1 real 4.4000 5.5800 MOISTURE_50C moisture of the soil sample dried at 50 degrees C (soil_mass_wet - soil_mass_50c/soil_mass_50c) numeric(7,3) number 1 real 0.0500 0.1400 SOIL_MASS_100C mass of the soil sample dried at 100 degrees C numeric(5,3) grams 1 real 4.3000 5.4600 MOISTURE_100C moisture of the soil sample dried at 100 degrees C (soil_mass_wet - soil_mass_100c/soil_mass_100c) numeric(7,3) number 1 real 0.0700 0.2000 PRIMARY TN02102.SAMPLE TN02102.YEAR NOTNULL TN02102.DBCODE TN02102.ENTITY TN02102.MOISTURE_100C TN02102.MOISTURE_50C TN02102.SAMPLE TN02102.SOIL_MASS_100C TN02102.SOIL_MASS_50C TN02102.SOIL_MASS_WET TN02102.YEAR 18 3 TN02103 Density Fractionation; carbon and nitrogren content averages by fraction across plots: TN02103.csv 1521 37597d5faddae77928eae412e6a803ca 1 \r\n column , " http://andlter.forestry.oregonstate.edu/ltermeta/ltersearch/dataaccess.aspx?docid=TN02103_v1.csv 1999-04-12 1999-11-26 DBCODE Database Code (assigned by FSDB data manager) char(5) TN021 FSDB database code TN021 ENTITY Entity number (data table number) numeric(2,0) number 1 natural 3.0000 3.0000 YEAR Year of sampling numeric(4,0) year (yyyy) 1 natural 1999.0000 1999.0000 FRACTION Density fraction of carbon in g/cm3 char(5) 1.65 1.65 g/cm3 density fraction of carbon 1.85 1.85 g/cm3 density fraction of carbon 2.4 2.4 g/cm3 density fraction of carbon 2.65 2.65 g/cm3 density fraction of carbon >2.65 >2.65 g/cm3 density fraction of carbon 2.0 2.0 g/cm3 density fraction of carbon TREAT Treatment char(10) 2x litter Double litter - aboveground inputs are doubled by adding litter from No Litter plots. 2x wood Double wood - woody inputs are doubled by dding shredded course woody debris. control Control - normal litter inputs are allowed. no input No Inputs - combined treatments from No Litter and No Roots treatments. no root NoRoots - roots are excluded by inserting barriers around plots in backfilled trenches. no litter No Litter - Aboveground inputs are prevented by seasonal removals. AVG_C average mg C per gram of soil numeric(5,2) milligrams per gram 1 real 0.4400 37.0200 AVG_N average mg N per gram of soil numeric(5,3) milligrams per gram 1 real 0.0200 0.8200 PRIMARY TN02103.FRACTION TN02103.TREAT TN02103.YEAR NOTNULL TN02103.AVG_C TN02103.AVG_N TN02103.DBCODE TN02103.ENTITY TN02103.FRACTION TN02103.TREAT TN02103.YEAR 36 4 TN02104 Content of organic carbon and nitrogen in soil water from soil lysimeters: TN02104.csv 24961 84f03b2332dedcb1c0b6674d0a4a6b62 1 \r\n column , " http://andlter.forestry.oregonstate.edu/ltermeta/ltersearch/dataaccess.aspx?docid=TN02104_v1.csv 1999-04-12 2011-04-15 DBCODE Database Code (assigned by FSDB data manager) char(5) TN021 FSDB database code TN021 ENTITY Entity number (data table number) numeric(2,0) number 1 natural 4.0000 4.0000 COLLDATE date of collection datetime YYYY-MM-DD 4/12/1999 12:00:00 AM 4/15/2011 12:00:00 AM DEPTH Lysimeter depth char(3) 30 30 cm depth 100 100 cm depth TREAT Treatment char(10) 2x litter Double litter - aboveground inputs are doubled by adding litter from No Litter plots. 2x wood Double wood - woody inputs are doubled by dding shredded course woody debris. control Control - normal litter inputs are allowed. no input No Inputs - combined treatments from No Litter and No Roots treatments. no root NoRoots - roots are excluded by inserting barriers around plots in backfilled trenches. no litter No Litter - Aboveground inputs are prevented by seasonal removals. DON dissolved organic nitrogen numeric(5,3) milligrams per liter 1 real 0.0000 2.5500 TDN total dissolved nitrogen numeric(5,3) milligrams per liter 1 real 0.0000 6.1800 NO3 nitrate numeric(5,3) milligrams per liter 1 real 0.0000 14.1400 NH4 ammonium numeric(5,3) milligrams per liter 1 real 0.0000 0.5800 DOC dissolved organic carbon numeric(5,3) milligrams per liter 1 real 0.0000 16.9000 PRIMARY TN02104.COLLDATE TN02104.DEPTH TN02104.TREAT NOTNULL TN02104.COLLDATE TN02104.DBCODE TN02104.DEPTH TN02104.ENTITY TN02104.TREAT 384 5 TN02105 Enzyme concentrations by treatment across plots: TN02105.csv 7492 ee2d1d425dc62f9c164240c0e010691c 1 \r\n column , " http://andlter.forestry.oregonstate.edu/ltermeta/ltersearch/dataaccess.aspx?docid=TN02105_v1.csv 2006-06-06 2010-10-10 DBCODE Database Code (assigned by FSDB data manager) char(5) TN021 FSDB database code TN021 ENTITY Entity number (data table number) numeric(2,0) number 1 natural 5.0000 5.0000 YEAR Year of sampling numeric(4,0) year (yyyy) 1 natural 2006.0000 2010.0000 PLOT Plot Code char(7) DIRT_01 HJA DIRT Plot 01 DIRT_02 HJA DIRT Plot 02 DIRT_03 HJA DIRT Plot 03 DIRT_04 HJA DIRT Plot 04 DIRT_05 HJA DIRT Plot 05 DIRT_06 HJA DIRT Plot 06 DIRT_07 HJA DIRT Plot 07 DIRT_08 HJA DIRT Plot 08 DIRT_10 HJA DIRT Plot 10 DIRT_11 HJA DIRT Plot 11 DIRT_12 HJA DIRT Plot 12 DIRT_13 HJA DIRT Plot 13 DIRT_14 HJA DIRT Plot 14 DIRT_16 HJA DIRT Plot 16 DIRT_17 HJA DIRT Plot 17 DIRT_19 HJA DIRT Plot 19 DIRT_49 HJA DIRT Plot 49 DIRT_69 HJA DIRT Plot 69 TREAT Treatment char(10) 2x litter Double litter - aboveground inputs are doubled by adding litter from No Litter plots. 2x wood Double wood - woody inputs are doubled by dding shredded course woody debris. control Control - normal litter inputs are allowed. no input No Inputs - combined treatments from No Litter and No Roots treatments. no root NoRoots - roots are excluded by inserting barriers around plots in backfilled trenches. no litter No Litter - Aboveground inputs are prevented by seasonal removals. ENZYME Enzyme measured using ester based assays char(10) Phosph Phosphatase BetaGlucos Beta Glucose PhenolOxy Phenol Oxidase Proteinase Proteinase (also termed protease or peptidase) ACTIVITY millimols enzyme activity per gram*hour numeric(5,2) millimol per hour per gram 1 real 0.0000 35.0000 PRIMARY TN02105.PLOT TN02105.TREAT TN02105.YEAR TN02105.ENZYME NOTNULL TN02105.DBCODE TN02105.ENTITY TN02105.PLOT TN02105.TREAT TN02105.YEAR TN02105.ENZYME 144 milligrams percent; a number grams; 0.001 kilogram milligrams per gram milligrams per liter dimensionless number, i.e., ratio, count year (4 character) portion of date millimol per hour per gram