uid=BNZ,o=lter,dc=ecoinformatics,dc=org all public read knb-lter-bnz.76.10 Richard D. 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 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 jpdowning@alaska.edu http://www.lter.uaf.edu Richard Brenner

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

(510) 642-1054 Associated investigator 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

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http://www.lter.uaf.edu/data_detail.cfm?datafile_pkey=76 Site information unavailable -148.32683 -148.1827217 64.71354433 64.66966 1999-08-01 2001-10-31

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 jpdowning@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 907-474-6251 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.

geoReference 1999-08-01 2001-10-31

Monthly

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://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-bnz..&urlTail=/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 dimensionless real 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 dimensionless T30 extraction date T30 extraction date Extraction date of T30 string dimensionless 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