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AN006 – Simplified metadata

← Back to AN006 detail

Dataset

Database Code
AN006
Title
Lotic Intersite Nitrogen eXperiment II (LINX II): a cross-site study of the effects of anthropogenic land use change on nitrate uptake and retention in 72 streams across 8 different biomes (2003 – 2006).
Abstract
The LINX II (Lotic Intersite Nitrogen eXperiment) project was designed to quantify the rates and mechanisms of nitrate retention in streams using stable isotope tracer additions. The study encompassed 72 stream reaches spread across 8 North American biomes. Within each biome, 9 streams were selected in three watershed land-use categories: 3 reference, 3 agricultural, and 3 urbanized. The core of the study was a 24-hour release of 15N- labeled nitrate. Prior to the isotope addition, physical, chemical and biological characteristics of the stream were measured. The measurements included, but were not limited to, dissolved nutrient concentrations, dissolved conservative tracer additions (to quantify hydraulic and hyporheic retention, velocity and discharge), standing stocks of primary uptake biota (including suspended and benthic particulate materials) as well as channel dimensions, photosynthetically active radiation, and water temperature. During the isotope release, whole stream rates of ecosystem metabolism were quantified (including quantification of re-aeration coefficients using tracer gas additions), and concentrations of 15N-labeled NO3, NH4, N2 and N2O were measured. Immediately following the isotope addition, 15N uptake by aquatic organisms was quantified by sampling biomass components on the stream bed. The data generated from these 72 stream reaches were used to develop a stream nitrogen retention model for each biome, which was expanded to entire drainage networks to predict nitrogen fluxes. The LINX II study demonstrated how biotic uptake of nitrate and denitrification increased with increasing nitrate concentrations. However, the efficiency of total uptake and denitrification actually declined with increasing nitrate concentrations (such as those seen on agricultural or urbanized streams), yielding higher rates of dissolved nitrogen exports downstream. The datasets presented here consist of the primary data collected by the LINX II study participants.
Keywords
stream ecology; nitrogen cycling; aquatic ecosystems
Date begin
2003-05-01
Date end
2006-03-01
Principal Investigator
Patrick J. Mulholland Clifford N. Dahm Walter K. Dodds Stanley V. Gregory Nancy B. Grimm Robert O. Jr. Hall Stephen K. Hamilton Sherri L. Johnson Bruce J. Peterson William H. McDowell Judy L. Meyer Jennifer L. Tank H. Maurice Valett Jackson R. Webster

Entities

  1. AN00601
  2. AN00602
  3. AN00603
  4. AN00604
  5. AN00605
  6. AN00606
  7. AN00607
  8. AN00608
  9. AN00609
  10. AN00610
  11. AN00611
  12. AN00612
  13. AN00613

1. AN00601 - Attribute list

AN00601 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 1.0000 1.0000 number
SITEID varchar enum
STATE varchar enum
LULC_CATEGORY varchar enum
STUDYYEAR datetime freetext
STREAMNAME varchar enum
BIOME varchar enum
COORDINATE_N15_X numeric(1) range 13.1810 44.6176 decimal degrees latitude or longitude
COORDINATE_N15_Y numeric(1) range -123.3303 110.8441 decimal degrees latitude or longitude
COORDINATE_1_X numeric(1) range 13.1930 44.6095 decimal degrees latitude or longitude
COORDINATE_1_Y numeric(1) range -123.3305 110.8440 decimal degrees latitude or longitude
COORDINATE_6_X numeric(1) range 13.2550 44.6176 decimal degrees latitude or longitude
COORDINATE_6_Y numeric(1) range -123.3311 110.8435 decimal degrees latitude or longitude
DRAINAGEAREA numeric(1) range 3.3000 1584719.0000 hectares
PCT_NATVEG numeric(1) range 0.0000 100.0000 percent
PCT_AGR numeric(1) range 0.0000 100.0000 percent
PCT_URB numeric(1) range 0.0000 100.0000 percent
PCT_CHANSLOPE numeric(1) range 0.0000 100.0000 percent
NOTES varchar freetext

2. AN00602 - Attribute list

AN00602 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 2.0000 2.0000 number
SITEID varchar enum
N15_BEGIN datetime freetext
N15_END datetime freetext
WEATHER varchar freetext
PAR_N15_RELEASE numeric(1) range 0.0000 70.0000 moles quanta per square meter per day
REACHLENGTH_ISOTOPE numeric(1) range 100.0000 1850.0000 meters
MEANWETWIDTH_ISOTOPE numeric(1) range 0.5500 6.7000 meters
INJECTIONTIME_ISOTOPE numeric(1) range 414.0000 1568.0000 number of minutes of time
INJECTIONRATE_ISOTOPE numeric(1) range 11.6000 186.3000 milliliters per minute
TRACER_SOLUTE varchar enum
TRACER_STOCKCONC numeric(1) range 434.6000 172190000.0000 milligrams per liter
TOTAL_15N_ADDED numeric(1) range 0.0350 1522.0800 grams
HIGH_NO3_SPIKE_CONCENTRATION_1 numeric(1) range 0.0000 184000.0000 micrograms per liter
HIGH_NO3_SPIKE_CONCENTRATION_2 numeric(1) range 0.0000 50000.0000 micrograms per liter
HIGH_NO3_SPIKE_CONCENTRATION_3 numeric(1) range 0.0000 50000.0000 micrograms per liter
HIGH_NO3_SPIKE_CONCENTRATION_4 numeric(1) range 0.0000 50000.0000 micrograms per liter
HIGH_NO3_SPIKE_CONCENTRATION_5 numeric(1) range 0.0000 50000.0000 micrograms per liter
HIGH_D15NO3_SPIKE_1 numeric(1) range -4.9000 35.6000 micrograms per liter
HIGH_D15NO3_SPIKE_2 numeric(1) range -5.1000 27.9000 micrograms per liter
HIGH_D15NO3_SPIKE_3 numeric(1) range -0.5000 60.8000 micrograms per liter
HIGH_D15NO3_SPIKE_4 numeric(1) range -3.4000 22.8000 micrograms per liter
HIGH_D15NO3_SPIKE_5 numeric(1) range -5.9000 8.5000 micrograms per liter
LOW_NO3_SPIKE_CONCENTRATION_1 numeric(1) range 0.0000 2000.0000 micrograms per liter
LOW_NO3_SPIKE_CONCENTRATION_2 numeric(1) range 0.0000 2000.0000 micrograms per liter
LOW_NO3_SPIKE_CONCENTRATION_3 numeric(1) range 0.0000 122.9000 micrograms per liter
LOW_NO3_SPIKE_CONCENTRATION_4 numeric(1) range 0.0000 40.0000 micrograms per liter
LOW_D15NO3_SPIKE_1 numeric(1) range -0.1000 21.0000 permil
LOW_D15NO3_SPIKE_2 numeric(1) range -1.2000 24.2000 permil
LOW_D15NO3_SPIKE_3 numeric(1) range -0.5000 9.7000 permil
LOW_D15NO3_SPIKE_4 numeric(1) range 0.0000 2.1000 permil
DEVARDAS_DATE datetime freetext
DEVARDAS_NO3_STANDARD_1 numeric(1) range 2.0000 50.0000 micrograms per deciliter
DEVARDAS_NO3_STANDARD_2 numeric(1) range 50.0000 75.0000 micrograms per deciliter
DEVARDAS_NO3_STANDARD_3 numeric(1) range 100.0000 100.0000 micrograms per deciliter
DEVARDAS_NO3_STANDARD_4 numeric(1) range 140.0000 150.0000 micrograms per deciliter
DEVARDAS_NO3_STANDARD_5 numeric(1) range 0.0000 200.0000 micrograms per deciliter
DEVARDAS_NO3_MASS_1 numeric(1) range 20.6000 57.0000 micrograms per liter
DEVARDAS_NO3_MASS_2 numeric(1) range 49.9000 107.1000 micrograms per liter
DEVARDAS_NO3_MASS_3 numeric(1) range 96.9000 134.0000 micrograms per liter
DEVARDAS_NO3_MASS_4 numeric(1) range 105.0000 181.2000 micrograms per liter
DEVARDAS_NO3_MASS_5 numeric(1) range 155.0000 239.4000 micrograms per liter
DEVARDAS_DN15_1 numeric(1) range -7.5000 4.4000 permil
DEVARDAS_DN15_2 numeric(1) range -4.5000 5.0000 permil
DEVARDAS_DN15_3 numeric(1) range -2.5000 4.4000 permil
DEVARDAS_DN15_4 numeric(1) range -3.3000 4.4000 permil
DEVARDAS_DN15_5 numeric(1) range -3.3000 5.1000 permil
MEASURED_STANDARD_D15NO3_1 numeric(1) range 20.0000 3443.0000 permil
MEASURED_STANDARD_D15NO3_2 numeric(1) range 20.0000 3414.9000 permil
EXPECTED_STANDARD_D15NO3_1 numeric(1) range 27.1000 2057.0000 permil
EXPECTED_STANDARD_D15NO3_2 numeric(1) range 25.6000 2057.0000 permil
FRACTIONATION_HIGH_DNH4_TRUE_1 numeric(1) range -2.4000 3.2000 permil
FRACTIONATION_HIGH_DNH4_TRUE_2 numeric(1) range -12.1000 7.5000 permil
FRACTIONATION_HIGH_DNH4_TRUE_3 numeric(1) range -1.9000 5.3000 permil
FRACTIONATION_HIGH_DNH4_TRUE_4 numeric(1) range -1.9000 2.8000 permil
FRACTIONATION_HIGH_DNH4_TRUE_5 numeric(1) range -1.5000 2.3000 permil
FRACTIONATION_TRUEMASS_NH4_1 numeric(1) range 0.0000 200.0000 micrograms
FRACTIONATION_TRUEMASS_NH4_2 numeric(1) range 0.0000 200.0000 micrograms
FRACTIONATION_TRUEMASS_NH4_3 numeric(1) range 0.0000 200.0000 micrograms
FRACTIONATION_TRUEMASS_NH4_4 numeric(1) range 0.0000 199.5000 micrograms
FRACTIONATION_MEASMASS_NH4_1 numeric(1) range 0.0000 144.6000 micrograms
FRACTIONATION_MEASMASS_NH4_2 numeric(1) range 0.0000 145.8000 micrograms
FRACTIONATION_MEASMASS_NH4_3 numeric(1) range 0.0000 143.1000 micrograms
FRACTIONATION_MEASMASS_NH4_4 numeric(1) range 0.0000 139.7000 micrograms
FRACTIONATION_D15NH4_1 numeric(1) range -16.1000 9.8000 permil
FRACTIONATION_D15NH4_2 numeric(1) range -9.7000 23.6000 permil
FRACTIONATION_D15NH4_3 numeric(1) range -11.8000 24.1000 permil
FRACTIONATION_D15NH4_4 numeric(1) range -10.8000 12.7000 permil
SPIKE_CONCENTRATION_NH4_1 numeric(1) range 0.0000 40.0000 micrograms per liter
SPIKE_CONCENTRATION_NH4_2 numeric(1) range 0.0000 40.0000 micrograms per liter
SPIKE_CONCENTRATION_NH4_3 numeric(1) range 0.0000 41.0000 micrograms per liter
SPIKE_CONCENTRATION_NH4_4 numeric(1) range 0.0000 40.0000 micrograms per liter
SPIKE_D15NH4_1 numeric(1) range -9.4000 2.4000 permil
SPIKE_D15NH4_2 numeric(1) range -8.5000 2.4000 permil
SPIKE_D15NH4_3 numeric(1) range -11.0000 2.4000 permil
SPIKE_D15NH4_4 numeric(1) range -8.6000 1.4000 permil
NOTES varchar freetext

3. AN00603 - Attribute list

AN00603 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 3.0000 3.0000 number
SITEID varchar enum
SAMPLE_DATETIME datetime freetext
SAMPLEPERIOD varchar enum
STATION varchar enum
DISTANCE numeric(1) range -10.0000 1872.0000 meters
TEMPERATURE_STREAM numeric(1) range 8.0000 49.0000 degrees Celsius
NO3_N_1 numeric(1) range -0.2000 24203.2000 micrograms per liter
NO3_N_2 numeric(1) range 0.4000 389.0000 micrograms per liter
NH4_N numeric(1) range 0.0000 5658.0000 micrograms per liter
TDN numeric(1) range 3.4000 6300.0000 micrograms per liter
DON numeric(1) range -569.0000 2940.0000 micrograms per liter
SRP numeric(1) range 0.0000 585.0000 micrograms per liter
TSP numeric(1) range 0.0000 890.0000 micrograms per liter
DOC numeric(1) range 0.0070 52.0000 milligrams per liter
SPC numeric(1) range 10.0000 731.0000 micro siemens per centimeter
TRACER_SOLUTECONC numeric(1) range 0.0000 61.6000 milligrams per liter
D15N_NH4 numeric(1) range -16.6000 795.1000 permil
D15N_TDN numeric(1) range -14.0000 655.5000 permil
D15N_NO3_1 numeric(1) range -17.0000 37042.0000 permil
D15N_NO3_2 numeric(1) range -9.8000 43082.4000 permil
INITIALSAMPLESIZE_15NO3 numeric(1) range 0.0010 3.0000 liters
INITIALSAMPLESIZE_15TDN numeric(1) range 0.0700 1.1100 liters
NOTES varchar freetext

4. AN00604 - Attribute list

AN00604 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 4.0000 4.0000 number
SITEID varchar enum
SAMPLE_DATETIME datetime freetext
SAMPLEPERIOD varchar enum
EXPTIME_ISOTOPE numeric(1) range 0.0000 3000.0000 number of minutes of time
STATION varchar enum
DISTANCE numeric(1) range 10.0000 1872.0000 meters
ANALYTICALLAB varchar enum
REP_NO varchar enum
VOLUMEWATERSAMPLE numeric(1) range 0.0000 127.0000 milliliters
VOLUMEHEADSPACE_HE numeric(1) range 0.0000 36.0000 milliliters
VOLUMEHEADSPACE_INJECTED numeric(1) range 0.0000 87.0000 milliliters
TEMPERATURE_STREAM numeric(1) range 0.0000 37.0000 degrees Celsius
TEMPERATURE_HEADSPACE numeric(1) range 0.0000 295.0000 degrees Celsius
BAROMETRICPRESSURE numeric(1) range 0.0000 1.0210 atmosphere
SPC numeric(1) range 0.3000 490.3000 micro siemens per centimeter
D15N_N2 numeric(1) range -18.0000 97.7000 permil
N2_MASS numeric(1) range -1.2540 1.2420 millimoles
D15N_N2O numeric(1) range -287.2000 11476.0000 permil
N2O_MASS numeric(1) range -5.5890 358.7600 nanomoles
N2O_CONCENTRATION numeric(1) range -0.0002 0.3938 micromoles per liter
NOTES varchar freetext

5. AN00605 - Attribute list

AN00605 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 5.0000 5.0000 number
SITEID varchar enum
SAMPLEDATE datetime freetext
SAMPLEPERIOD varchar enum
STATION varchar enum
REP_NO varchar enum
DISTANCE numeric(1) range -5.0000 1872.0000 meters
DRYMASS_CONC numeric(1) range -7.7918 255.3333 milligrams per liter
AFDM_CONC numeric(1) range 0.0000 93.5385 milligrams per liter
PCT_C numeric(1) range 0.0400 101.3000 percent
PCT_N numeric(1) range -9.7300 16.8900 percent
D13C_SAMPLE numeric(1) range -32.0000 -14.5000 permil
D15N_SAMPLE numeric(1) range -4.1000 2133.8000 permil
NOTES varchar freetext

6. AN00606 - Attribute list

AN00606 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 6.0000 6.0000 number
SITEID varchar enum
COMPARTMENT varchar enum
HABITAT_TYPE varchar enum
HABITAT_TYPE_PROPORTION numeric(1) range 0.0000 1.0000 number
COMPARTXHAB_MEANDRYMASS numeric(1) range 0.0000 86740.7211 grams per square meter
COMPARTXHAB_MEANAFDM numeric(1) range 0.0000 11004.2100 grams per square meter
COMPARTXHAB_MEANCHLA numeric(1) range 0.0000 341.8000 milligrams per square meter
NOTES varchar freetext

7. AN00607 - Attribute list

AN00607 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 7.0000 7.0000 number
SITEID varchar enum
SAMPLEDATE datetime freetext
COMPARTMENT varchar enum
STATION varchar enum
REP_NO varchar enum
DISTANCE numeric(1) range -10.0000 1872.0000 meters
SAMPLEDRYMASS numeric(1) range 0.0320 734.2000 milligrams
PCT_C numeric(1) range 0.1600 53.5200 percent
PCT_N numeric(1) range 0.0000 10.5200 percent
D13C_SAMPLE numeric(1) range -73.5000 40.1000 permil
D15N_SAMPLE numeric(1) range -5.0000 5005.9000 permil
NOTES varchar freetext

8. AN00608 - Attribute list

AN00608 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 8.0000 8.0000 number
SITEID varchar enum
SAMPLEDATE datetime freetext
SAMPLENUMBER numeric(1) range 0.0000 19.0000 number
LOCATION varchar freetext
NH4_N numeric(1) range 0.5000 2982.0000 micrograms per liter
NO3_N numeric(1) range 2.0000 35569.0000 micrograms per liter
NOTES varchar freetext

9. AN00609 - Attribute list

AN00609 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 9.0000 9.0000 number
SITEID varchar enum
SAMPLEDATE datetime freetext
SAMPLEPERIOD varchar enum
TRACER_GAS varchar enum
TRACER_SOLUTE varchar enum
RELEASETIME numeric(1) range -60.0000 573.0000 number of minutes of time
DISTANCE_TRACERS numeric(1) range -996.0000 1343.0000 meters
SPC numeric(1) range 0.8000 1207.0000 micro siemens per centimeter
TEMPERATURE_STREAM numeric(1) range 10.0000 36.0000 degrees Celsius
TRACER_SOLUTECONC numeric(1) range 0.0000 650.6490 milligrams per liter
MEAN_GC_GASVALUES numeric(1) range 0.0000 143800896.0000 number
NUMBER_GC_GASVALUES numeric(1) range 0.0000 12.0000 number
NOTES varchar freetext

10. AN00610 - Attribute list

AN00610 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 10.0000 10.0000 number
SITEID varchar enum
SAMPLEDATE datetime freetext
NUMBERPROBES numeric(1) range 1.0000 3.0000 number
DO_INTERVALMEASUREMENT numeric(1) range 5.0000 15.0000 number of minutes of time
REACHLENGTH_METABOLISM numeric(1) range 20.0000 550.0000 meters
MEANWETWITHMETABOLISM numeric(1) range 0.5300 7.9200 meters
MEANDEPTHMETABOLISM numeric(1) range 0.0100 0.3800 meters
DISCHARGE_MEAN numeric(1) range 0.5000 275.5000 liters per second
DISCHARGE_TOPTOBOTTOM numeric(1) range -40.0000 332.0000 liters per second
REACHTRAVELTIME numeric(1) range 5.0000 432.0000 number of minutes of time
OXYGENREAERATIONCOEFFICIENT_1 numeric(1) range 0.0000 0.0805 number
OXYGENREAERATIONCOEFFICIENT_2 numeric(1) range 0.0000 0.2719 number
TEMPERATURE_REAERATION numeric(1) range 9.7800 32.0000 degrees Celsius
TIMESUNRISE varchar freetext
TIMESUNSET varchar freetext
UP_MEANFRACDOSATAIR_PRE numeric(1) range 0.0000 1.0655 number
UP_MEANFRACDOSATAIR_POST numeric(1) range 0.0000 1.0884 number
DOWN_MEANFRACDOSATAIR_PRE numeric(1) range 0.9107 1.0649 number
DOWN_MEANFRACDOSATAIR_POST numeric(1) range 0.7110 1.1869 number
NOTES varchar freetext

11. AN00611 - Attribute list

AN00611 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 11.0000 11.0000 number
SITEID varchar enum
SAMPLE_DATETIME datetime freetext
BAROMETRICPRESSURE numeric(1) range 0.7763 1.0153 atmosphere
TEMPERATURE_UP numeric(1) range 6.2400 36.3700 degrees Celsius
DO_UP numeric(1) range 0.0600 16.2100 milligrams per liter
DO_SATURATIONPERCENT_UP numeric(1) range 0.6000 190.3000 percent
TEMPERATURE_DOWN numeric(1) range 0.5700 36.7800 degrees Celsius
DO_DOWN numeric(1) range 2.4400 89.7000 milligrams per liter
DO_SATURATIONPERCENT_DOWN numeric(1) range 3.5000 306.9000 percent
NOTES varchar freetext

12. AN00612 - Attribute list

AN00612 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 12.0000 12.0000 number
SITEID varchar enum
TRACER_SOLUTE varchar enum
INJECTIONTYPE varchar enum
INJECTION_START_DATETIME datetime freetext
INJECTION_END_DATETIME datetime freetext
INJECTIONTIME_SOLUTE numeric(1) range 32.0000 1477.0000 number of minutes of time
INJECTIONRATE_SOLUTE numeric(1) range 11.0000 2750.0000 milliliters per minute
INJECTATE_SPC numeric(1) range 1036.0000 145300000.0000 micro siemens per centimeter
INJECTATE_CONCENTRATION numeric(1) range 19.2000 180574.0000 milligrams per liter
REACHLENGTH_TRACER numeric(1) range 25.0000 1872.0000 meters
MEANWETWIDTH_TRACER numeric(1) range 0.5500 7.3400 meters
MEANDEPTH_TRACER numeric(1) range 0.0100 0.3100 meters
NOTES varchar freetext

13. AN00613 - Attribute list

AN00613 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 13.0000 13.0000 number
SITEID varchar enum
TRACER_SOLUTE varchar enum
EXPTIME_SOLUTE numeric(1) range -2.0000 185.8667 number of hours
TRACER_SOLUTECONC numeric(1) range -0.7740 257625.0000 milligrams per liter
TRACER_SOLUTECONCCORR numeric(1) range -3966.0000 184625.0000 micrograms per liter
TRACER_SOLUTESPC numeric(1) range 0.5000 1432.0000 micro siemens per centimeter
TRACER_SOLUTESPCCORR numeric(1) range -105.0000 374.0000 micro siemens per centimeter
NOTES varchar freetext

Attribute definitions

AFDM_CONC
Ash-free dry mass concentration
ANALYTICALLAB
Laboratory analyzing isotope and mass
BAROMETRICPRESSURE
Barometric pressure at time of sampling
BIOME
Regional biome classification of study site
COMPARTMENT
Biotic component sampled
COMPARTXHAB_MEANAFDM
Ash-free dry mass of biotic component by habitat type
COMPARTXHAB_MEANCHLA
Mean chlorophyll A concentration of biotic component by habitat type
COMPARTXHAB_MEANDRYMASS
Dry mass of biotic component by habitat type
COORDINATE_1_X
Latitude of sample site 1
COORDINATE_1_Y
Longitude of sample site 1
COORDINATE_6_X
Latitude of sample site 6
COORDINATE_6_Y
Longitude of sample site 6
COORDINATE_N15_X
Latitude of isotope release point
COORDINATE_N15_Y
Longitude of isotope release point
D13C_SAMPLE
del 13C of sample
D15N_N2
del 15N-nitrogen gas measured in headspace sample
D15N_N2O
del 15N nitrous oxide gas measured in headspace sample
D15N_NH4
del 15N of ammonium
D15N_NO3_1
del 15N of nitrate, replicate 1
D15N_NO3_2
del 15N of nitrate, replicate 2
D15N_SAMPLE
del 15N of sample
D15N_TDN
del 15N of total dissolved nitrogen
DBCODE
Database Code
DEVARDAS_DATE
date Devardas alloy blank corrections determined
DEVARDAS_DN15_1
d15N of Devardas standard series, #1
DEVARDAS_DN15_2
d15N of Devardas standard series, #2
DEVARDAS_DN15_3
d15N of Devardas standard series, #3
DEVARDAS_DN15_4
d15N of Devardas standard series, #4
DEVARDAS_DN15_5
d15N of Devardas standard series, #5
DEVARDAS_NO3_MASS_1
Measured mass of N in Devardas standard series, #1
DEVARDAS_NO3_MASS_2
Measured mass of N in Devardas standard series, #2
DEVARDAS_NO3_MASS_3
Measured mass of N in Devardas standard series, #3
DEVARDAS_NO3_MASS_4
Measured mass of N in Devardas standard series, #4
DEVARDAS_NO3_MASS_5
Measured mass of N in Devardas standard series, #5
DEVARDAS_NO3_STANDARD_1
Devardas nitrate standard concentration series #1 per 100 ml DIW
DEVARDAS_NO3_STANDARD_2
Devardas nitrate standard concentration series #2 per 100 ml DIW
DEVARDAS_NO3_STANDARD_3
Devardas nitrate standard concentration series #3 per 100 ml DIW
DEVARDAS_NO3_STANDARD_4
Devardas nitrate standard concentration series #4 per 100 ml DIW
DEVARDAS_NO3_STANDARD_5
Devardas nitrate standard concentration series #5 per 100 ml DIW
DISCHARGE_MEAN
Average stream discharge over metabolism reach
DISCHARGE_TOPTOBOTTOM
Change in stream discharge from top of metabolism reach to bottom
DISTANCE
Distance of sample station from isotope addition point; negative values are upstream
DISTANCE_TRACERS
Distance of sample station from tracer addition point
DOC
Dissolved organic carbon
DON
Dissolved organic nitrogen
DOWN_MEANFRACDOSATAIR_POST
Mean fraction of dissolved oxygen in air after deployment for downstream sonde
DOWN_MEANFRACDOSATAIR_PRE
Mean fraction of dissolved oxygen in air prior to deployment for downstream sonde
DO_DOWN
Concentration of dissolved oxygen at downstream sonde
DO_INTERVALMEASUREMENT
Programed interval at which dissolved oxygen measured
DO_SATURATIONPERCENT_DOWN
Percent saturation of oxygen relative to sea level at downstream sonde
DO_SATURATIONPERCENT_UP
Percent saturation of oxygen relative to sea level at upstream sonde
DO_UP
Concentration of dissolved oxygen at upstream sonde
DRAINAGEAREA
Watershed area upstream of isotope release
DRYMASS_CONC
Dry mass concentration
ENTITY
Entity number
EXPECTED_STANDARD_D15NO3_1
expected d15N of nitrate standards, replicate #1
EXPECTED_STANDARD_D15NO3_2
expected d15N of nitrate standards, replicate #2
EXPTIME_ISOTOPE
Time since start of isotope addition
EXPTIME_SOLUTE
Time standardized in relation to start of tracer addition
FRACTIONATION_D15NH4_1
d15N ammonium, low ammonium fractionation standard, replicate #1
FRACTIONATION_D15NH4_2
d15N ammonium, low ammonium fractionation standard, replicate #2
FRACTIONATION_D15NH4_3
d15N ammonium, low ammonium fractionation standard, replicate #3
FRACTIONATION_D15NH4_4
d15N ammonium, low ammonium fractionation standard, replicate #4
FRACTIONATION_HIGH_DNH4_TRUE_1
d15N for ammonium fractionation correction, replicate 1
FRACTIONATION_HIGH_DNH4_TRUE_2
d15N for ammonium fractionation correction, replicate 2
FRACTIONATION_HIGH_DNH4_TRUE_3
d15N for ammonium fractionation correction, replicate 3
FRACTIONATION_HIGH_DNH4_TRUE_4
d15N for ammonium fractionation correction, replicate 4
FRACTIONATION_HIGH_DNH4_TRUE_5
d15N for ammonium fractionation correction, replicate 5
FRACTIONATION_MEASMASS_NH4_1
mass spec determined nitrogen mass, ammonium fractionation standard, replicate #1
FRACTIONATION_MEASMASS_NH4_2
mass spec determined nitrogen mass, ammonium fractionation standard, replicate #2
FRACTIONATION_MEASMASS_NH4_3
mass spec determined nitrogen mass, ammonium fractionation standard, replicate #3
FRACTIONATION_MEASMASS_NH4_4
mass spec determined nitrogen mass, ammonium fractionation standard, replicate #4
FRACTIONATION_TRUEMASS_NH4_1
true nitrogen mass, ammonium fractionation correction, replicate #1
FRACTIONATION_TRUEMASS_NH4_2
true nitrogen mass, ammonium fractionation correction, replicate #2
FRACTIONATION_TRUEMASS_NH4_3
true nitrogen mass, ammonium fractionation correction, replicate #3
FRACTIONATION_TRUEMASS_NH4_4
true nitrogen mass, ammonium fractionation correction, replicate #4
HABITAT_TYPE
Type of habitat sampled
HABITAT_TYPE_PROPORTION
Relative amount of habitat type present in study reach
HIGH_D15NO3_SPIKE_1
d15N of nitrate spike correction sample, replicate 1
HIGH_D15NO3_SPIKE_2
d15N of nitrate spike correction sample, replicate 2
HIGH_D15NO3_SPIKE_3
d15N of nitrate spike correction sample, replicate 3
HIGH_D15NO3_SPIKE_4
d15N of nitrate spike correction sample, replicate 4
HIGH_D15NO3_SPIKE_5
d15N of nitrate spike correction sample, replicate 5
HIGH_NO3_SPIKE_CONCENTRATION_1
Nitrate concentration of spike correction sample, replicate 1
HIGH_NO3_SPIKE_CONCENTRATION_2
Nitrate concentration of spike correction sample, replicate 2
HIGH_NO3_SPIKE_CONCENTRATION_3
Nitrate concentration of spike correction sample, replicate 3
HIGH_NO3_SPIKE_CONCENTRATION_4
Nitrate concentration of spike correction sample, replicate 4
HIGH_NO3_SPIKE_CONCENTRATION_5
Nitrate concentration of spike correction sample, replicate 5
INITIALSAMPLESIZE_15NO3
Initial volume boiled down to 100 mL for 15NO3 analysis
INITIALSAMPLESIZE_15TDN
Initial volume boiled down to 100 mL for TD15N analysis
INJECTATE_CONCENTRATION
Stock solution concentration
INJECTATE_SPC
Stock solution conductivity
INJECTIONRATE_ISOTOPE
Rate of addition of isotope stock to stream
INJECTIONRATE_SOLUTE
Rate of pump input of tracer stock to stream
INJECTIONTIME_ISOTOPE
Duration of isotope addition
INJECTIONTIME_SOLUTE
Duration of tracer release
INJECTIONTYPE
Format of tracer release
INJECTION_END_DATETIME
Date tracer release end
INJECTION_START_DATETIME
Date tracer release begin
LOCATION
Location of sample collection (highly variable by site)
LOW_D15NO3_SPIKE_1
d15N of low ambient nitrate spike correction sample, replicate 1
LOW_D15NO3_SPIKE_2
d15N of low ambient nitrate spike correction sample, replicate 2
LOW_D15NO3_SPIKE_3
d15N of low ambient nitrate spike correction sample, replicate 3
LOW_D15NO3_SPIKE_4
d15N of low ambient nitrate spike correction sample, replicate 4
LOW_NO3_SPIKE_CONCENTRATION_1
Nitrate concentration of low ambient nitrate spike correction sample, replicate 1
LOW_NO3_SPIKE_CONCENTRATION_2
Nitrate concentration of low ambient nitrate spike correction sample, replicate 2
LOW_NO3_SPIKE_CONCENTRATION_3
Nitrate concentration of low ambient nitrate spike correction sample, replicate 3
LOW_NO3_SPIKE_CONCENTRATION_4
Nitrate concentration of low ambient nitrate spike correction sample, replicate 4
LULC_CATEGORY
Landuse landcover classification
MEANDEPTHMETABOLISM
Channel average depth over metabolism reach
MEANDEPTH_TRACER
Average stream depth over tracer study
MEANWETWIDTH_ISOTOPE
Mean wet width of stream channel, isotope study reach
MEANWETWIDTH_TRACER
Average stream wetted channel width over tracer study
MEANWETWITHMETABOLISM
Channel average wetted width over metabolism reach
MEAN_GC_GASVALUES
Average of gas chromatography measurements of tracer gas peak area
MEASURED_STANDARD_D15NO3_1
observed d15N of nitrate standards, replicate #1
MEASURED_STANDARD_D15NO3_2
observed d15N of nitrate standards, replicate #2
N2O_CONCENTRATION
Nitrous oxide gas concentration, from MSU GC laboratory
N2O_MASS
Nitrous oxide gas mass in exetainer, from mass spec lab
N2_MASS
Nitrogen gas mass in exetainer, from mass spec lab
N15_BEGIN
Date & time isotope addition begins
N15_END
Date & time isotope addition ends
NH4_N
Ammonium-nitrogen
NO3_N
Nitrate-nitrogen
NO3_N_1
Nitrate-nitrogen, replicate 1
NO3_N_2
Nitrate-nitrogen, replicate 2
NOTES
Notes from sites or metadata coordinator
NUMBERPROBES
Number of datalogging sensor sondes used
NUMBER_GC_GASVALUES
Number of samples analyzed for gas tracer
OXYGENREAERATIONCOEFFICIENT_1
Coefficient of oxygen reaeration for metabolism reach, direct measurement (per meter)
OXYGENREAERATIONCOEFFICIENT_2
Coefficient of oxygen reaeration for metabolism reach, corrected for reach length & travel time (per minute)
PAR_N15_RELEASE
Total Photosynthetically active radiation during isotope addition
PCT_AGR
Percent of watershed in agriculture
PCT_C
Percent carbon
PCT_CHANSLOPE
Channel slope in percent
PCT_N
Percent nitrogen
PCT_NATVEG
Percent of watershed in natural vegetation
PCT_URB
Percent of watershed in urban
REACHLENGTH_ISOTOPE
Length of stream study reach for isotope addition
REACHLENGTH_METABOLISM
Stream length for metabolism measurements
REACHLENGTH_TRACER
Distance from tracer input to sample
REACHTRAVELTIME
Travel time of water through metabolism reach
RELEASETIME
Time sample collected relative to start of tracer addition
REP_NO
Sample lab replicate number
SAMPLEDATE
Date sample collected
SAMPLEDRYMASS
Dry mass of sample analyzed for isotope analysis, from mass spec
SAMPLENUMBER
Sample identifier for each Site
SAMPLEPERIOD
Standard period of sample collection relative to isotope and/or tracer addition
SAMPLE_DATETIME
Date sample collected
SITEID
Abbreviation assigned to each study site
SPC
Specific conductance of stream water during sampling
SPIKE_CONCENTRATION_NH4_1
Ammonium concentration of spike correction sample, replicate 1
SPIKE_CONCENTRATION_NH4_2
Ammonium concentration of spike correction sample, replicate 2
SPIKE_CONCENTRATION_NH4_3
Ammonium concentration of spike correction sample, replicate 3
SPIKE_CONCENTRATION_NH4_4
Ammonium concentration of spike correction sample, replicate 4
SPIKE_D15NH4_1
d15N of ammonium spike correction sample, replicate 1
SPIKE_D15NH4_2
d15N of ammonium spike correction sample, replicate 2
SPIKE_D15NH4_3
d15N of ammonium spike correction sample, replicate 3
SPIKE_D15NH4_4
d15N of ammonium spike correction sample, replicate 4
SRP
Soluble reactive phosphorus-phosphate
STATE
State where isotope experiment took place
STATION
Sample collection station
STREAMNAME
Name of study stream
STUDYYEAR
Year isotope release
TDN
Total dissolved nitrogen (filtered sample)
TEMPERATURE_DOWN
Stream water temperature at downstream sonde
TEMPERATURE_HEADSPACE
Temperature of headspace at equilibrium
TEMPERATURE_REAERATION
Stream temperature when reaeration coefficient determined
TEMPERATURE_STREAM
In-stream water temperature during sampling
TEMPERATURE_UP
Stream water temperature at upstream sonde
TIMESUNRISE
Time of sunrise (HH:MM) at metabolism site
TIMESUNSET
Time of sunset (HH:MM) at metabolism site
TOTAL_15N_ADDED
Total amount of K15NO3 added to stream
TRACER_GAS
Type of gas used as tracer
TRACER_SOLUTE
Dye and/or anion used for conservative tracer
TRACER_SOLUTECONC
Concentration of dissolved conservative solute tracer at sample time & location
TRACER_SOLUTECONCCORR
Tracer concentration corrected for background values
TRACER_SOLUTESPC
Tracer specific conductance
TRACER_SOLUTESPCCORR
Tracer specific conductance corrected for background values
TRACER_STOCKCONC
Conservative tracer concentration of injection solution
TSP
Total soluble phosphorus (filtered sampled)
UP_MEANFRACDOSATAIR_POST
Mean fraction of dissolved oxygen in air after deployment for upstream sonde
UP_MEANFRACDOSATAIR_PRE
Mean fraction of dissolved oxygen in air prior to deployment for upstream sonde
VOLUMEHEADSPACE_HE
Volume helium added to syringe headspace
VOLUMEHEADSPACE_INJECTED
Volume headspace gas injected into sample vial
VOLUMEWATERSAMPLE
Water volume collected in sampling syringe
WEATHER
Weather conditions during isotope addition

Enumerated domains

Enumerated domain for attribute: DBCODE

Codes for DBCODE
Code Description
AN006 FSDB Database Code AN006

Enumerated domain for attribute: SITEID

Codes for SITEID
Code Description
LINX2 LINX II study stream network
MA_REF_1 LINX II reference study stream replicate year 1 in Massachusetts (Cart Creek)
MA_URB_1 LINX II urban study stream replicate year 1 in Massachusetts (IS_104)
MA_REF_2 LINX II reference study stream replicate year 2 in Massachusetts (Boxford)
MA_AGR_1 LINX II agriculture study stream replicate year 1 in Massachusetts (Runaway Brook)
MA_AGR_2 LINX II agriculture study stream replicate year 2 in Massachusetts (Long Meadow Brook)
MA_REF_3 LINX II reference study stream replicate year 3 in Massachusetts (Gravelly Brook)
MA_AGR_3 LINX II agriculture study stream replicate year 3 in Massachusetts (Black Brook)
MA_URB_2 LINX II urban study stream replicate year 2 in Massachusetts (Sawmill Brook)
MA_URB_3 LINX II urban study stream replicate year 3 in Massachusetts (IS_118)
NC_REF_1 LINX II reference study stream replicate year 1 in North Carolina (Hugh White Creek)
NC_AGR_1 LINX II agriculture study stream replicate year 1 in North Carolina (Hoglot Branch)
NC_URB_1 LINX II urban study stream replicate year 1 in North Carolina (Crawford Branch)
NC_REF_2 LINX II reference study stream replicate year 2 in North Carolina (Big Hurricane Branch)
NC_AGR_2 LINX II agriculture study stream replicate year 2 in North Carolina (Jerry Branch)
NC_URB_2 LINX II urban study stream replicate year 2 in North Carolina (Mud Creek)
NC_REF_3 LINX II reference study stream replicate year 3 in North Carolina (Cunningham Creek)
NC_AGR_3 LINX II agriculture study stream replicate year 3 in North Carolina (Blacks Branch)
NC_URB_3 LINX II urban study stream replicate year 3 in North Carolina (Sugarloaf Creek)
MI_REF_1 LINX II reference study stream replicate year 1 in Michigan (Sand Creek)
MI_AGR_1 LINX II agriculture study stream replicate year 1 in Michigan (Steinke Drain)
MI_URB_1 LINX II urban study stream replicate year 1 in Michigan (DORR)
MI_REF_2 LINX II reference study stream replicate year 2 in Michigan (Bullet)
MI_AGR_2 LINX II agriculture study stream replicate year 2 in Michigan (Buskirk)
MI_URB_2 LINX II urban study stream replicate year 2 in Michigan (Wayland)
MI_REF_3 LINX II reference study stream replicate year 3 in Michigan (Honeysuckle)
MI_AGR_3 LINX II agriculture study stream replicate year 3 in Michigan (Bellingham)
MI_URB_3 LINX II urban study stream replicate year 3 in Michigan (Arcadia)
KS_REF_1 LINX II reference study stream replicate year 1 in Kansas (Kings Creek N4D)
KS_AGR_1 LINX II agriculture study stream replicate year 1 in Kansas (Agnorth)
KS_URB_1 LINX II urban study stream replicate year 1 in Kansas (Campus Creek)
KS_REF_2 LINX II reference study stream replicate year 2 in Kansas (K2A)
KS_AGR_2 LINX II agriculture study stream replicate year 2 in Kansas (Natalie Creek)
KS_URB_2 LINX II urban study stream replicate year 2 in Kansas (Walmart Ditch)
KS_REF_3 LINX II reference study stream replicate year 3 in Kansas (Shane Creek)
KS_AGR_3 LINX II agriculture study stream replicate year 3 in Kansas (Swine)
KS_URB_3 LINX II urban study stream replicate year 3 in Kansas (Little Kitten)
WY_REF_1 LINX II reference study stream replicate year 1 in Wyoming (Ditch)
WY_AGR_1 LINX II agriculture study stream replicate year 1 in Wyoming (Giltner)
WY_URB_1 LINX II urban study stream replicate year 1 in Wyoming (Golf)
WY_REF_2 LINX II reference study stream replicate year 2 in Wyoming (Two Oceans)
WY_AGR_2 LINX II agriculture study stream replicate year 2 in Wyoming (Headquarters)
WY_URB_2 LINX II urban study stream replicate year 2 in Wyoming (Teton Pines)
WY_REF_3 LINX II reference study stream replicate year 3 in Wyoming (Spread)
WY_AGR_3 LINX II agriculture study stream replicate year 3 in Wyoming (Kimball)
WY_URB_3 LINX II urban study stream replicate year 3 in Wyoming (Fish)
SW_REF_1 LINX II reference study stream replicate year 1 in Southwest: Arizona or New Mexico (Agua Fria)
SW_AGR_1 LINX II agriculture study stream replicate year 1 in Southwest: Arizona or New Mexico (Bernalillo dr
SW_URB_1 LINX II urban study stream replicate year 1 in Southwest: Arizona or New Mexico (Rio Rancho)
SW_REF_2 LINX II reference study stream replicate year 2 in Southwest: Arizona or New Mexico (Rio Salado)
SW_AGR_2 LINX II agriculture study stream replicate year 2 in Southwest: Arizona or New Mexico (Rio Puerco)
SW_AGR_3 LINX II agriculture study stream replicate year 3 in Southwest: Arizona or New Mexico (San Pedro)
SW_REF_3 LINX II reference study stream replicate year 3 in Southwest: Arizona or New Mexico (Sycamore Ck)
SW_URB_2 LINX II urban study stream replicate year 2 in Southwest: Arizona or New Mexico (Indian Bend Wash)
SW_URB_3 LINX II urban study stream replicate year 3 in Southwest: Arizona or New Mexico (Tempe Town lake)
OR_REF_1 LINX II reference study stream replicate year 1 in Oregon (Oak)
OR_AGR_1 LINX II agriculture study stream replicate year 1 in Oregon (Oak)
OR_URB_1 LINX II urban study stream replicate year 1 in Oregon (Oak)
OR_REF_2 LINX II reference study stream replicate year 2 in Oregon (Mack)
OR_AGR_2 LINX II agriculture study stream replicate year 2 in Oregon (Camp)
OR_URB_2 LINX II urban study stream replicate year 2 in Oregon (Amazon)
OR_REF_3 LINX II reference study stream replicate year 3 in Oregon (Potts)
OR_AGR_3 LINX II agriculture study stream replicate year 3 in Oregon (Courtney)
OR_URB_3 LINX II urban study stream replicate year 3 in Oregon (Periwinkle)
PR_REF_1 LINX II reference study stream replicate year 1 in Puerto Rico (Bisley)
PR_AGR_1 LINX II agriculture study stream replicate year 1 in Puerto Rico (Grande)
PR_URB_1 LINX II urban study stream replicate year 1 in Puerto Rico (Petunia)
PR_REF_2 LINX II reference study stream replicate year 2 in Puerto Rico (RIT)
PR_AGR_2 LINX II agriculture study stream replicate year 2 in Puerto Rico (Maizales)
PR_URB_2 LINX II urban study stream replicate year 2 in Puerto Rico (Mtrib)
PR_REF_3 LINX II reference study stream replicate year 3 in Puerto Rico (Pared)
PR_AGR_3 LINX II agriculture study stream replicate year 3 in Puerto Rico (Vaca)
PR_URB_3 LINX II urban study stream replicate year 3 in Puerto Rico (Ceiba)

Enumerated domain for attribute: STATE

Codes for STATE
Code Description
MA Massachusetts
NC North Carolina
MI Michigan
KS Kansas
WY Wyoming
SW Southwest: Arizona or New Mexico
OR Oregon
PR Puerto Rico

Enumerated domain for attribute: LULC_CATEGORY

Codes for LULC_CATEGORY
Code Description
REF Reference area; native vegetation, relatively minimal human impact
AGR Agriculture area; pasture, rangeland, crop land, etc. (no heavy N-fertilizer use)
URB Urban/suburban area; residential, commercial, golf course, etc.

Enumerated domain for attribute: STREAMNAME

Codes for STREAMNAME
Code Description
Agnorth LINX II agriculture study stream Agnorth, in Kansas (KS_AGR_1)
Natalie Creek LINX II agriculture study stream Natalie Creek, in Kansas (KS_AGR_2)
Swine LINX II agriculture study stream Swine, in Kansas (KS_AGR_3)
Kings Creek N4D LINX II reference study stream Kings Creek N4D, in Kansas (KS_REF_1)
K2A LINX II reference study stream K2A, in Kansas (KS_REF_2)
Shane Creek LINX II reference study stream Shane Creek, in Kansas (KS_REF_3)
Campus Creek LINX II urban study stream Campus Creek, in Kansas (KS_URB_1)
Walmart Ditch LINX II urban study stream Walmart Ditch, in Kansas (KS_URB_2)
Little Kitten LINX II urban study stream Little Kitten, in Kansas (KS_URB_3)
Runaway Brook LINX II agriculture study stream Runaway Brook, in Massachusetts (MA_AGR_1)
Long Meadow Brook LINX II agriculture study stream Long Meadow Brook, in Massachusetts (MA_AGR_2)
Black Brook LINX II agriculture study stream Black Brook, in Massachusetts (MA_AGR_3)
Cart Creek LINX II reference study stream Cart Creek, in Massachusetts (MA_REF_1)
Boxford LINX II reference study stream Boxford, in Massachusetts (MA_REF_2)
Gravelly Brook LINX II reference study stream Gravelly Brook, in Massachusetts (MA_REF_3)
IS_104 LINX II urban study stream IS_104, in Massachusetts (MA_URB_1)
Sawmill Brook LINX II urban study stream Sawmill Brook, in Massachusetts (MA_URB_2)
IS_118 LINX II urban study stream IS_118, in Massachusetts (MA_URB_3)
Steinke Drain LINX II agriculture study stream Steinke Drain, in Michigan (MI_AGR_1)
Buskirk LINX II agriculture study stream Buskirk, in Michigan (MI_AGR_2)
Bellingham LINX II agriculture study stream Bellingham, in Michigan (MI_AGR_3)
Sand Creek LINX II reference study stream Sand Creek, in Michigan (MI_REF_1)
Bullet LINX II reference study stream Bullet, in Michigan (MI_REF_2)
Honeysuckle LINX II reference study stream Honeysuckle, in Michigan (MI_REF_3)
DORR LINX II urban study stream DORR, in Michigan (MI_URB_1)
Wayland LINX II urban study stream Wayland, in Michigan (MI_URB_2)
Arcadia LINX II urban study stream Arcadia, in Michigan (MI_URB_3)
Hoglot Branch LINX II agriculture study stream Hoglot Branch, in North Carolina (NC_AGR_1)
Jerry Branch LINX II agriculture study stream Jerry Branch, in North Carolina (NC_AGR_2)
Blacks Branch LINX II agriculture study stream Blacks Branch, in North Carolina (NC_AGR_3)
Hugh White Creek LINX II reference study stream Hugh White Creek, in North Carolina (NC_REF_1)
Big Hurricane Branch LINX II reference study stream Big Hurricane Branch, in North Carolina (NC_REF_2)
Cunningham Creek LINX II reference study stream Cunningham Creek, in North Carolina (NC_REF_3)
Crawford Branch LINX II urban study stream Crawford Branch, in North Carolina (NC_URB_1)
Mud Creek LINX II urban study stream Mud Creek, in North Carolina (NC_URB_2)
Sugarloaf Creek LINX II urban study stream Sugarloaf Creek, in North Carolina (NC_URB_3)
Oak LINX II agriculture study stream Oak, in Oregon (OR_AGR_1)
Camp LINX II agriculture study stream Camp, in Oregon (OR_AGR_2)
Courtney LINX II agriculture study stream Courtney, in Oregon (OR_AGR_3)
Oak LINX II reference study stream Oak, in Oregon (OR_REF_1)
Mack LINX II reference study stream Mack, in Oregon (OR_REF_2)
Potts LINX II reference study stream Potts, in Oregon (OR_REF_3)
Oak LINX II urban study stream Oak, in Oregon (OR_URB_1)
Amazon LINX II urban study stream Amazon, in Oregon (OR_URB_2)
Periwinkle LINX II urban study stream Periwinkle, in Oregon (OR_URB_3)
Grande LINX II agriculture study stream Grande, in Puerto Rico (PR_AGR_1)
Maizales LINX II agriculture study stream Maizales, in Puerto Rico (PR_AGR_2)
Vaca LINX II agriculture study stream Vaca, in Puerto Rico (PR_AGR_3)
Bisley LINX II reference study stream Bisley, in Puerto Rico (PR_REF_1)
RIT LINX II reference study stream RIT, in Puerto Rico (PR_REF_2)
Pared LINX II reference study stream Pared, in Puerto Rico (PR_REF_3)
Petunia LINX II urban study stream Petunia, in Puerto Rico (PR_URB_1)
Mtrib LINX II urban study stream Mtrib, in Puerto Rico (PR_URB_2)
Ceiba LINX II urban study stream Ceiba, in Puerto Rico (PR_URB_3)
Bernalillo drain LINX II agriculture study stream Bernalillo drain, in Southwest: Arizona or New Mexico (SW_AGR_1)
Rio Puerco LINX II agriculture study stream Rio Puerco, in Southwest: Arizona or New Mexico (SW_AGR_2)
San Pedro LINX II agriculture study stream San Pedro, in Southwest: Arizona or New Mexico (SW_AGR_3)
Agua Fria LINX II reference study stream Agua Fria, in Southwest: Arizona or New Mexico (SW_REF_1)
Rio Salado LINX II reference study stream Rio Salado, in Southwest: Arizona or New Mexico (SW_REF_2)
Sycamore Ck LINX II reference study stream Sycamore Ck, in Southwest: Arizona or New Mexico (SW_REF_3)
Rio Rancho LINX II urban study stream Rio Rancho, in Southwest: Arizona or New Mexico (SW_URB_1)
Indian Bend Wash LINX II urban study stream Indian Bend Wash, in Southwest: Arizona or New Mexico (SW_URB_2)
Tempe Town lake LINX II urban study stream Tempe Town lake, in Southwest: Arizona or New Mexico (SW_URB_3)
Giltner LINX II agriculture study stream Giltner, in Wyoming (WY_AGR_1)
Headquarters LINX II agriculture study stream Headquarters, in Wyoming (WY_AGR_2)
Kimball LINX II agriculture study stream Kimball, in Wyoming (WY_AGR_3)
Ditch LINX II reference study stream Ditch, in Wyoming (WY_REF_1)
Two Oceans LINX II reference study stream Two Oceans, in Wyoming (WY_REF_2)
Spread LINX II reference study stream Spread, in Wyoming (WY_REF_3)
Golf LINX II urban study stream Golf, in Wyoming (WY_URB_1)
Teton Pines LINX II urban study stream Teton Pines, in Wyoming (WY_URB_2)
Fish LINX II urban study stream Fish, in Wyoming (WY_URB_3)

Enumerated domain for attribute: BIOME

Codes for BIOME
Code Description
deciduous_n northern deciduous forest
tallgrass tallgrass prairie
conifer_dry dry coniferous forest/shrub steppe
shrub shrub steppe
desert desert
conifer_wet wet coniferous forest
tropical tropical forest
deciduous_s southern deciduous forest

Enumerated domain for attribute: TRACER_SOLUTE

Codes for TRACER_SOLUTE
Code Description
Br Bromide
Cl Chloride
Rh Rhodamine Dye
Cl&Br Chloride and Bromide released together

Enumerated domain for attribute: SAMPLEPERIOD

Codes for SAMPLEPERIOD
Code Description
None No samples collected, see Notes field for explanation
Pre Samples collected prior to start of isotope addition
Plateau_1 Samples collected approximately 12 hours after the start of isotope addition
Plateau_2 Samples collected approximately 23 hours after the start of isotope addition
Diurnal Samples collected every 2 hours over the isotope additon (for gas only)
Post_24h Samples collected approximately 24 hours after the isotope addition stopped
Post_72h Samples collected approximately 3 days after the isotope addition stopped
Post_1wk Samples collected approximately 1 week after the isotope addition stopped
Plateau Samples collected at plateau determined by conservative solute tracer

Enumerated domain for attribute: STATION

Codes for STATION
Code Description
1B Sample collected between stations 1 and 2
2B Sample collected between stations 2 and 3
3B Sample collected between stations 3 and 4
4B Sample collected between stations 4 and 5
Sample point located upstream of isotope addition
1 Closest sample point to isotope addition
2 Sample point downstream of Station 1
3 Sample point downstream of Station 2
4 Sample point downstream of Station 3
5 Sample point downstream of Station 4
6 Sample point downstream of Station 5
7 Sample point downstream of Station 6
X No samples collected, see Notes field for explanation
8 Sample point downstream of Station 7
9 Sample point downstream of Station 8
0B Sample collected between isotope addition point and station 1

Enumerated domain for attribute: ANALYTICALLAB

Codes for ANALYTICALLAB
Code Description
KSU Kansas State University Stable Isotope Lab
MSU Michigan State University Stable Isotope Lab
UCD University of California, Davis, Stable Isotope Lab
UNK Laboratory unknown (arranged by Pat Mulholland)
None No samples collected, see Notes field for explanation

Enumerated domain for attribute: REP_NO

Codes for REP_NO
Code Description
1 First replicate sample; many samples only have one sample per siteid, sampleperiod and station
2 Second replicate sample for a given siteid, sampleperiod and station
No samples analyzed

Enumerated domain for attribute: COMPARTMENT

Codes for COMPARTMENT
Code Description
CBOM-leaves Coarse benthic organic material, predominantly leaves
CBOM-wood Coarse benthic organic material, predominantly wood fragments
CBOM Coarse benthic organic material, no composition specified
FBOM-surface Fine benthic organic material, surface sample
FBOM-subsurface Fine benthic organic material, subsurface sample
Algae In-stream algae, no further description
AlgalFines Fine particles associated with algae
AlgalMat-tan Algal mat of predominantly tan or brown algae
BermudaGrass Bermuda grass
Biofilm Biofilm of microscopic organisms
Broadgrass Broadgrass in stream
Broadgrass-roots Exposed roots of broadgrass
Broadgrass-shoots Emergent shoots of broadgrass
AlgaeBrown Brown algae, likely filamentous
Bryophytes Bryophytes
CBOM-mix Coarse benthic organic material, mixture of leaves and small wood
Chara Chara, green algal species
Cladophora Cladophora, green algal species
Cladophora-Active Cladophora, green and actively growing
Cladophora-Senescent Cladophora, decaying mat
DeadRootsAndGrass Roots, grasses in stream and decaying
EmergentGrass Grass in stream, species unspecified
Epilithon Biofilm of microscopic organisms on rocks, rock dimension not specified
Epilithon-bedrock Biofilm of microscopic organisms on bedrock
Epilithon-cobble Biofilm of microscopic organisms on cobble-sized sediments
Epiphyton Biofilm of microscopic organisms on emergent or other plants
Episammon Biofilm of microscopic organisms on sand substrate
Epixylon Biofilm of microscopic organisms on wood
Equisetum Equisetum in stream
Equisetum-root Roots of Equisetum in stream
Equisetum-shoot Shoots of Equisetum in stream
FBOM Fine benthic organic material, depth not specified
FBOM-deep Fine benthic organic material, deep sample
FilamentousAlgae Filmentous algal mats, algal type not specified
FilamentousGreenAlga Filmentous green algal mats, genus not specified
FreshwaterSponge Freshwater sponge, no taxonomic data
Grass Grass in stream, species unspecified
Grass-roots Roots of grass in stream
Grass-shoots Shoots of grass in stream
Knotgrass Knotgrass in stream
Lemna Lemna or duckweed in stream
Macrophytes Aquatic macrophytes in stream, no genus given
Macroph-P.crispus Aquatic macrophytes in stream, Potomageton crispus
Macroph-P.pectinatus Aquatic macrophytes in stream, Potomageton pectinatus
Midges Larvae of midge flies in stream
Myriophyllum Aquatic macrophytes in stream, Myriophyllum
Nostoc Blue-green algae in stream Nostoc
Ranunculus Ranunculus buttercup plant in stream
Roots Roots of vascular plants in stream, not additional information
Sand Sand in stream
Snails Snails in stream
TrueGrass True grass species in stream
TrueGrass-roots Roots of true grass species in stream
TrueGrass-shoots Shoots of true grass species in stream
Veronica Veronica, vascular plant, in stream
Veronica-roots Roots of Veronica in stream
Veronica-shoots Shoots of Veronica in stream
Watercress Watercress plant in stream
Watercress-roots Watercress roots in stream
Watercress-sand Sand embedded in watercress in stream
Watercress-shoots Watercress shoots in stream
Wood Wood in stream, no additional information
FGAlga-Subsurface Filmentous green algal mats, genus not specified, subsurface sample
FGAlga-Surface Filmentous green algal mats, genus not specified, surface sample

Enumerated domain for attribute: HABITAT_TYPE

Codes for HABITAT_TYPE
Code Description
BankSide Along elevated banks of stream
Bedrock Continuous cover of bedrock in stream
Bedrock/cobbles Mixture of bedrock and cobble-sized sediments
BermudaGrass Bermuda grass in stream
Biofilm Biofilm of microscopic organisms
Boulder Boulder-sized sediments
Chara Chara, green algal species
Cladophora Cladophora, green algal species
Cobble Cobble-sized sediments
Cobble/rock Mixture of cobble-sized and larger sediments
Depositional Area of low water velocity with sediments and other material deposited
FBOM Fine benthic organic material
FilamentousAlgae Filmentous algal mats, algal type not specified
FilamentousGreenAlga Filmentous green algal mats, genus not specified
Glide Area intermediate between pool and riffle in terms of water velocity
Grasses Grass in stream, species unspecified
Gravel Gravel-sized sediments
Gravel/cobble Mixture of gravel- and cobble-sized sediments
Lemna Lemna or duckweed in stream
Myriophyllum Aquatic macrophytes in stream, Myriophyllum
Nasturtium Aquatic macrophytes in stream, Nasturtium
Organic-richFineSed Fine benthic sediments with high concentration of organic fraction
Pool Pool in stream
Ranunculus Ranunculus buttercup plant in stream
Riffle Riffle in stream, comparatively fast velocity
Riffle/Glide Transition between riffle and glide habitat types
Rock/sand Mixture of sand and larger sediment sizes
Rocks Large sediment, size not specified
Sand Sand in stream
Silt Comparatively fine sediments, intermediate between sand and clay
StreamSide Along side of stream
TotalWoodSurface Surface area (measured) of all wood submerged in stream
Veronica Veronica, vascular plant, in stream
Watercress Watercress plant in stream
WholeStream Entire stream included in areal estimate, no further partioning

Enumerated domain for attribute: TRACER_GAS

Codes for TRACER_GAS
Code Description
SF6 Sulfur hexafluoride
C3H8 Propane
C2H2 Acetylene

Enumerated domain for attribute: INJECTIONTYPE

Codes for INJECTIONTYPE
Code Description
drip drip
slug slug