uid=BNZ,o=EDI,dc=edirepository,dc=org all public read knb-lter-bnz.76.19 Richard Brenner

Department of Biology & Wildlife University of Alaska Fairbanks 211 Irving I Fairbanks AK 99775 United States

(510) 642-1054 rbrenner@uclink.berkeley.edu Richard Boone

Institute of Arctic Biology University of Alaska Fairbanks P.O. Box 757000 Fairbanks AK 99775 United States

(907) 474-7682 rdboone@alaska.edu http://mercury.bio.uaf.edu/~rich_boone/ Bonanza Creek LTER

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 uaf-bnz-im-team@alaska.edu http://www.lter.uaf.edu Bonanza Creek LTER Data Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 uaf-bnz-im-team@alaska.edu http://www.lter.uaf.edu 2003-10-23 This data set includes results (DIN and DON pools, %C, %N, net nitrogen mineralization, net ammonification, net nitrification, etc) from a multi-year buried soil core (intact core) incubation study in control and fertilized plots of balsam poplar and white spruce along the Tanana River Floodplain. The study began in 1999 and continued until early 2001. Soil cores were incubated monthly but were also incubated during the winters of 1999-2000 and 2000-2001. Buried bag intact core nitrogen mineralization net nitrification floodplain Biogeochemistry

This work has been produced as part of the Long Term Ecological Research Program and data users should adhere to the Data Use Agreement of the Long Term Ecological Research Network. The consumer of these data (“Data User” herein) has an ethical obligation to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or coauthorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. 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. Thank you.

It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User should properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator(s), Year of Data Publication, Title of Dataset, Publisher, Dataset identifier, Dataset URL, Dataset DOI. For Example: Van Cleve, Keith; Chapin, F. Stuart; Ruess, Roger W. 2016. Bonanza Creek Experimental Forest: Hourly Temperature (sample, min, max) at 50 cm and 150 cm from 1988 to Present, Bonanza Creek LTER - University of Alaska Fairbanks. BNZ:1, http://www.lter.uaf.edu/data/data-detail/id/1. doi:10.6073/pasta/725db90d86686be13e6d6b2da5d61217.

The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. For example: Data are provided by the Bonanza Creek LTER, a partnership between the University of Alaska Fairbanks, and the U.S. Forest Service. Significant funding for collection of these data was provided by the National Science Foundation Long-Term Ecological Research program (NSF Grant numbers DEB-2224776, DEB-1636476, DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629) and by the USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-20-JV-11261932-018).

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While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available in its present condition. The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

http://www.lter.uaf.edu/data/data-detail/id/76 Dataset geographic description information is unavailable. {datafile/geoCoverage is empty} -148.32683 -148.1827217 64.71354433 64.66966 1999-08-01 2001-10-31

"ug" indicates micrograms (e.g., ug NH4-N/g dry soil/ day same as: ug NH4-N gdry soil-1 day-1) "T0" indicates soil cores that were removed at the beginning of the incubaiton and immediately extracted for DIN, DOC, etc. "T30" indicates soil cores that were incubated in the ground for approximately one month during the growing season (hence the name T30) or for >200 days during the overwinter period. Although rare in the dataset, there a few places in which net cycling rates are negative when calculated on an area basis but positive when calculated on a per g dry soil basis (or vice versa). This happened because a standard bulk density was not used for each plot or stand type. Instead, a separate bulk density was calculated for each core. Thus, iper g soil a "T30" core may have had a slightly greater pool of DIN, but, if the bulk density of the T30 core was slightly smaller than the "T0" core then the cycling rate per g soil may have been positive (net mineralization) while the cycling rate per area might have been negative (net DIN immobilization).

Completed

Bonanza Creek LTER Data Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 uaf-bnz-im-team@alaska.edu http://www.lter.uaf.edu Bonanza Creek LTER

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 Bonanza Creek LTER

Study was conducted in mature balsam poplar and mature white spruce stands. All stand were located on island in the active portion of the Tanana River floodplain. At each site we randomly collected soil cores within a 30 x 30 meter fertilized plot and an adjacent 15 x 15 m control plot. 5, 0-20 cm soil cores were collected at each sampling period Only 3, 20-30 cm soil cores were collected and only at 4 sampling period throughout the study. Essentially, we were more interested in what was going on in the 0-20 soil and really just wanted to use the deeper soil cores to see if they contributed much to annual N mineralization or if, in the fertilized plots, nitrogen was leaching down to the 20-30 cm depth.

Soil cores were collected every month from August 1999 until July 2001. We used an intact buried core incubation method to determine net nitrogen mineralization, net ammonification and net nitrification. In addition, we also measured dissolved organic nitrogen (DON) to determine net rates of "DON Production" in a similar fashion as net inorganic cycling rates. Net production of DIN or DON = (pool size at the end of the incubation - pool size at beginning of incubation) / days of incubation. Where pool size could either be concentration per unit soil mass or concentration per unit area (e.g., mg N g-1 or mg N m-2) 0-20 cm soil cores began (approximately) under the previous two seasons of leaf litter in balsam poplar stands and under the live moss in white spruce stands. For all coring we used a 5.6 cm diameter Giddings hand corer. Plastic sleeves enabled intact soil cores to be transported to the lab for analysis. For soil cores that incubated in the ground -- "T30" cores -- we drilled several ~1.5 cm holes in the plastic sleeves to enable the free exchange of gases in the soil. All soil extractions were done with 10 g of fresh soil and 75 mL of 0.5 M K2SO4. Samples were shaken, left for 24 hours and shaken again prior to extraction with vacuum filtration.

FP4A -- Mature white spruce. Site alternate names: 241, SMVIIIC, FSL-LD-FP4A_ws, VIIIWS, VIIIAC -148.2368605 -148.2368605 64.67878586 64.67878586 FP4B -- Mature white spruce. Site alternate names: 242, FSL-LD-FP4B_ws, VIIIYI, VIIIBC -148.2707843 -148.2707843 64.67129926 64.67129926 FP4C -- Mature white spruce. Site alternate names: 243, LV132, FSL-LD-FP4C_ws -148.1827217 -148.1827217 64.71354433 64.71354433 BP1 -- Beneath the overstory of balsam poplar in these forests (approximately 100 years of age) grows a relatively dense understory of thin-leaf alder, with rose (Rosa acicularis) and high-bush cranberry (Viburnum edule) present within the shrub layer, and a scattered ground cover of non-vascular plants, graminoids, and forbs (Ruess et al. 2013 in press). . Site alternate names: -148.241 -148.241 64.67066 64.67066 BP2 -- Beneath the overstory of balsam poplar in these forests (approximately 100 years of age) grows a relatively dense understory of thin-leaf alder, with rose (Rosa acicularis) and high-bush cranberry (Viburnum edule) present within the shrub layer, and a scattered ground cover of non-vascular plants, graminoids, and forbs (Ruess et al. 2013 in press). . Site alternate names: -148.24783 -148.24783 64.66966 64.66966 BP3 -- Beneath the overstory of balsam poplar in these forests (approximately 100 years of age) grows a relatively dense understory of thin-leaf alder, with rose (Rosa acicularis) and high-bush cranberry (Viburnum edule) present within the shrub layer, and a scattered ground cover of non-vascular plants, graminoids, and forbs (Ruess et al. 2013 in press). . Site alternate names: -148.32683 -148.32683 64.67083 64.67083 1999-08-01 2001-10-31

Monthly

Keith Van Cleve Bonanza Creek LTER Lead Principal Investigator Principal Investigator F.S. Stuart Chapin Bonanza Creek LTER Lead Principal Investigator

Department of Biology and Wildlife; Institute of Arctic Biology: University of Alaska Fairbanks 193 Arctic Health P.O. Box 757000 Fairbanks AK 99775 United States

(907) 455-6408 (907) 474-6967 terry.chapin@alaska.edu http://terrychapin.org/ Principal Investigator Roger W. Ruess Bonanza Creek LTER Lead Principal Investigator

Institute of Arctic Biology University of Alaska Fairbanks P.O. Box 757000 Fairbanks AK 99775-0180 United States

(907) 474-7153 (907) 474-6967 rwruess@alaska.edu http://www.iab.uaf.edu/~roger_ruess/ Principal Investigator Michelle Cailin Mack Bonanza Creek LTER Lead Principal Investigator

Northern Arizona University: Ecosystem Science and Society Center (ECOSS) PO Box 5620 Flagstaff AZ 86011 United States

(928) 523-9415 Michelle.Mack@nau.edu https://macklab.nau.edu/ Principal Investigator NSF Grant numbers DEB-2224776, DEB-1636476, DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629 USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-20-JV-11261932-018) 200_1735_Floodplain_LTER_Net_N_Mineralization.txt.csv The file contains pools of DIN, DON, total carbon, total nitrogen, and net nitrogen cycling rates determined from a 2+ year buried core incubation study in mature floodplain stands of balsam poplar and white spruce in the Bonanza Creek LTER site. The format of the file is text, comma delimited, Units of measure include area based (e.g., mg/m2/yr or ug/m2) or weight based (e.g., mg/g dry soil). mg = milligrams ug=micrograms 200_1735_Floodplain_LTER_Net_N_Mineralization.txt.csv 1 \n \n column , http://www.lter.uaf.edu/php/download_data.php?f=/ascii/files/200_1735_Floodplain_LTER_Net_N_Mineralization.txt.csv Incubation Period Incubation Period Period 1 was not included because forest floor was separated from mineral soil during that period but was included with entire 0-20 cm core during other periods. With number assigned to that period in parentheses. string Period 1 was not included because forest floor was separated from mineral soil during that period but was included with entire 0-20 cm core during other periods. With number assigned to that period in parentheses. Plot Name Plot Name Plot Name string CONT Control Plot FERT Fertilized plot REP REP Replication: 5 replicate cores per plot for 0-20 cm cores; 3 replicate cores per plot taken for 20-30 cm cores string Replication: 5 replicate cores per plot for 0-20 cm cores; 3 replicate cores per plot taken for 20-30 cm cores Numeric Period Numeric Period The number assined to each incubation period. Period 1 was not included because forest floor was separated from mineral soil during that period but was included with entire 0-20 cm core during other periods integer The number assined to each incubation period. Period 1 was not included because forest floor was separated from mineral soil during that period but was included with entire 0-20 cm core during other periods Treatment Treatment Treatment type string 1 CONTROL 2 FERTILIZED W/ 100 Kg N ha-1 yr-1 as NH4NO3 Stand Type Stand Type Stand Type string 1 B. Poplar 2 W.Spruce SITE SITE Site ID string 1 BP1 2 BP2 3 BP3 4 FP4A 5 FP4B 6 FP4C SUBPLOT SUBPLOT Subplot ID integer 1 BP1 CONTROL 2 BP2 CONTROL; 3=BP3 CONTROL; 4=BP1 FERTILIZED; 5=BP2 FERTILIZED; 6=BP3 FERTILIZED; 7=FP4A CONTROL; 8=FP4B CONTROL; 9=FP4C CONTROL; 10=FP4A FERTILIZED; 11 = FP4B FERTILIZED; 12 = FP4C FERTILIZED Depth Depth Depth of core: (1= 0-20 cm; 2= 20-30 cm cores) integer Depth of core: (1= 0-20 cm; 2= 20-30 cm cores) T0 collection date T0 collection date Collection date of T0 string mm/dd/yyyy T30 extraction date T30 extraction date Extraction date of T30 string mm/dd/yyyy Total Days in Incubation Total Days in Incubation Total Days in Incubation string Total Days in Incubation T0 Soil Moisture Content: (fraction of dry mass) T0 Soil Moisture Content: (fraction of dry mass) T0 Soil Moisture Content: (fraction of dry mass) float dimensionless real T30 Soil Moisture Content: (fraction of dry mass) T30 Soil Moisture Content: (fraction of dry mass) T30 Soil Moisture Content: (fraction of dry mass) float dimensionless real T0 ug NO3-N/g dry soil T0 ug NO3-N/g dry soil T0 ug NO3-N/g dry soil float microgram real T30 ug NO3-N/g dry soil T30 ug NO3-N/g dry soil T30 ug NO3-N/g dry soil float microgram real T0 ug NO3-N/m^2: (= ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2)) T0 ug NO3-N/m^2: (= ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2)) T0 ug NO3-N/m^2: (= ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2)) float microgram real T0 mg NO3-N/m^2: (= ugN/gdrysoil*(1/1000)) T0 mg NO3-N/m^2: (= ugN/gdrysoil*(1/1000)) T0 mg NO3-N/m^2: (= ugN/gdrysoil*(1/1000)) float microgram real T30 ug NO3-N/m^2: (= ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2)) T30 ug NO3-N/m^2: (= ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2)) T30 ug NO3-N/m^2: (= ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2)) float microgram real Net Nitrification Rate ugNO3-N/m^2/day: (= (T30-T0)/days from T0 collection to T30 extraction) Net Nitrification Rate ugNO3-N/m^2/day: (= (T30-T0)/days from T0 collection to T30 extraction) Net Nitrification Rate ugNO3-N/m^2/day: (= (T30-T0)/days from T0 collection to T30 extraction) float microgram real Net Nitrification Rate in mg NO3-N/m^2/day Net Nitrification Rate in mg NO3-N/m^2/day Net Nitrification Rate in mg NO3-N/m^2/day float microgram real Net Nitrification Rate in ugNO3-N/gdrysoil/day Net Nitrification Rate in ugNO3-N/gdrysoil/day Net Nitrification Rate in ugNO3-N/gdrysoil/day float microgram real Total mgNO3-N produced/m2 for entire period Total mgNO3-N produced/m2 for entire period Total mgNO3-N produced/m2 for entire period float microgram real Total ug NO3-N produced/g dry soil for entire period Total ug NO3-N produced/g dry soil for entire period Total ug NO3-N produced/g dry soil for entire period float microgram real T0 ug NH4-N/g dry soil T0 ug NH4-N/g dry soil T0 ug NH4-N/g dry soil float microgram real T30 ug NH4-N/g dry soil T30 ug NH4-N/g dry soil T30 ug NH4-N/g dry soil float microgram real T0 ug NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (note: there are 10,000 cm^2 in 1m^2) T0 ug NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (note: there are 10,000 cm^2 in 1m^2) T0 ug NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (note: there are 10,000 cm^2 in 1m^2) float microgram real T0 mg NH4-N/m^2= ugN/gdrysoil*(1/1000) T0 mg NH4-N/m^2= ugN/gdrysoil*(1/1000) T0 mg NH4-N/m^2= ugN/gdrysoil*(1/1000) float microgram real T30 ug NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T30 ug NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T30 ug NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) float microgram real Net Ammonification Rate ugNH4-N/m^2/day = (T30-T0)/days from T0 collection to T30 extraction Net Ammonification Rate ugNH4-N/m^2/day = (T30-T0)/days from T0 collection to T30 extraction Net Ammonification Rate ugNH4-N/m^2/day = (T30-T0)/days from T0 collection to T30 extraction float microgram real Net Ammonification Rate in mg NH4-N/m^2/day Net Ammonification Rate in mg NH4-N/m^2/day Net Ammonification Rate in mg NH4-N/m^2/day float microgram real Net Ammonification Rate in ugNH4-N/gdrysoil/day Net Ammonification Rate in ugNH4-N/gdrysoil/day Net Ammonification Rate in ugNH4-N/gdrysoil/day float microgram real Total mgNH4-N produced /m2 for entire period Total mgNH4-N produced /m2 for entire period Total mgNH4-N produced /m2 for entire period float microgram real Total ug NH4-N produced/g dry soil for entire period Total ug NH4-N produced/g dry soil for entire period Total ug NH4-N produced/g dry soil for entire period float microgram real T0 ug NO3-N+NH4-N/g dry soil = ugN/gdrysoil T0 ug NO3-N+NH4-N/g dry soil = ugN/gdrysoil T0 ug NO3-N+NH4-N/g dry soil = ugN/gdrysoil float microgram real T30 ug NO3-N+NH4-N/g dry soil T30 ug NO3-N+NH4-N/g dry soil T30 ug NO3-N+NH4-N/g dry soil float microgram real T0 ug NO3-N+NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T0 ug NO3-N+NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T0 ug NO3-N+NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) float microgram real T0 mg NO3-N+NH4-N/m^2 = ugN/gdrysoil*(1/1000)*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T0 mg NO3-N+NH4-N/m^2 = ugN/gdrysoil*(1/1000)*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T0 mg NO3-N+NH4-N/m^2 = ugN/gdrysoil*(1/1000)*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) float microgram real T30 ug NO3-N+NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T30 ug NO3-N+NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T30 ug NO3-N+NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) float microgram real Net Mineralization Rate ugNH4-N+NO3-N/m^2/day = (T30-T0)/days from T0 to extraction Net Mineralization Rate ugNH4-N+NO3-N/m^2/day = (T30-T0)/days from T0 to extraction Net Mineralization Rate ugNH4-N+NO3-N/m^2/day = (T30-T0)/days from T0 to extraction float microgram real Net Mineralization Rate in mgNH4-N+NO3-N/m^2/day = (T30-T0)/days from T0 to extraction Net Mineralization Rate in mgNH4-N+NO3-N/m^2/day = (T30-T0)/days from T0 to extraction Net Mineralization Rate in mgNH4-N+NO3-N/m^2/day = (T30-T0)/days from T0 to extraction float microgram real Net mineralization Rate in ug NO3-N+NH4-N/gdrysoil/day Net mineralization Rate in ug NO3-N+NH4-N/gdrysoil/day Net mineralization Rate in ug NO3-N+NH4-N/gdrysoil/day float microgram real Total mg NH4-N+NO3-N/m2 produced per period Total mg NH4-N+NO3-N/m2 produced per period Total mg NH4-N+NO3-N/m2 produced per period float microgram real Total ug NO3-N+NH4-N/gdry soil produced per period Total ug NO3-N+NH4-N/gdry soil produced per period Total ug NO3-N+NH4-N/gdry soil produced per period float microgram real T0 ug DON-N/g dry soil T0 ug DON-N/g dry soil T0 ug DON-N/g dry soil float microgram real T30 ug DON-N/g dry soil T30 ug DON-N/g dry soil T30 ug DON-N/g dry soil float microgram real T0 ug DON-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T0 ug DON-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T0 ug DON-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) float microgram real T0 mg DON-N/m^2 = ugN/gdrysoil*(1/1000)*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T0 mg DON-N/m^2 = ugN/gdrysoil*(1/1000)*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T0 mg DON-N/m^2 = ugN/gdrysoil*(1/1000)*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) float microgram real T30 ug DON-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T30 ug DON-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) T30 ug DON-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) float microgram real Net DON Production Rate ugDON-N/m^2/day = (T30-T0)/days from T0 to extraction Net DON Production Rate ugDON-N/m^2/day = (T30-T0)/days from T0 to extraction Net DON Production Rate ugDON-N/m^2/day = (T30-T0)/days from T0 to extraction float microgram real Net DON Production Rate mgDON-N/m^2/day = (T30-T0)/days from T0 to extraction Net DON Production Rate mgDON-N/m^2/day = (T30-T0)/days from T0 to extraction Net DON Production Rate mgDON-N/m^2/day = (T30-T0)/days from T0 to extraction float microgram real ug DON-N/gdry soil/day ug DON-N/gdry soil/day Dissolved Organic Nitrogen per day float microgram real Total mg DON-N/m2 produced during entire incubation period Total mg DON-N/m2 produced during entire incubation period Total Dissolved Organic Nitrogen produced during entire incubation period float microgram real Total ug DON-N/g dry soil produced during entire incubation period Total ug DON-N/g dry soil produced during entire incubation period Total Dissolved Organic Nitrogen dry soil produced during entire incubation period float microgram real % Carbon (%of air dried soil mass) % Carbon (%of air dried soil mass) Percent Carbon float percent real % Nitrogen (%of air dried soil mass) % Nitrogen (%of air dried soil mass) Percent Nitrogen float percent real Soil C:N ratio Soil C:N ratio Soil C:N ratio float ratio real mg totalC/g105C dry soil mg totalC/g105C dry soil mg totalC/g105C dry soil float microgram real mg TotalN/g105C dry soil mg TotalN/g105C dry soil mg TotalN/g105C dry soil float microgram real g TotalC/m2 g TotalC/m2 Total Carbon per meter squared float gram real g Total N/m2 g Total N/m2 Total Nitrogen per meter squared float gram real