Ammonium desorption of hyporheic sediments from Von Guerard Stream, McMurdo Dry Valleys, Antarctica (January 2019)

Summary

Abstract: 

This data package provides analytic results for a laboratory assay on sediment samples collected in January 2019 from a transect (“P2”) across Von Guerard Stream (as described by Heindel et al. 2021), located in Taylor Valley, McMurdo Dry Valleys, Antarctica. We used excess sample from that study in a laboratory desorption assay to assess conductivity dependent desorption of ammonium. The assay was performed by mixing samples with potassium chloride treatment solutions that replicate the range of specific conductivities observed in Von Guerard Stream, shaking and centrifuging slurries, and analyzing filtered supernatant. 

Date Range: 

January 10, 2019
Data Citation
Singley, J.G., Gooseff, M.N., Hinckley, E. 2021. Ammonium desorption of hyporheic sediments from Von Guerard Stream, McMurdo Dry Valleys, Antarctica (January 2019). Environmental Data Initiative. DOI: 10.6073/pasta/89e07484a91d8b503ae19d772555fbb4. Dataset accessed 15 October 2021.
Dataset(s)

Description: 

This data table provides sediment sample information and concentrations of analytes for extraction solution blanks and sample aliquots. Data are organized by sampling location and treatment.

Variables (click to expand): 

DATASET_CODE
  • Label: Dataset code
  • Definition: Internal dataset code representing Von Guerard sediment desorption assay.
  • Type: Nominal
  • Missing values: None specified
STRMGAGEID
  • Label: Stream Gage ID
  • Definition: Code representing stream gage station.
  • Type: Nominal
  • Missing values: None specified
STREAM_NAME
  • Label: Stream name
  • Definition: Name of stream.
  • Type: Nominal
  • Missing values: None specified
SAMPLE_ID
  • Label: Sample ID
  • Definition: Alphanumeric code indicating lateral location of sample on transect, treatment, and replicate id. 1-5 = lateral location from wetted margin on stream left to wetted margin on stream right, with 3 at the thalweg; 0,40,80,160,320 indicate treatment solution conductivity; A-C indicate replicate identifier.
  • Type: Nominal
  • Missing values: None specified
SAMPLE_TYPE
  • Label: Sample type
  • Definition: Alphanumeric code identifying sample type. Sample = treated sediment sample; solution_blank = treatment solution without sediment.
  • Type: Nominal
  • Missing values: None specified
LATERAL_POSITION
  • Label: Lateral position
  • Definition: Sample location identifier from lateral transect across stream. 1-5 = lateral location from wetted margin on stream left to wetted margin on stream right, with 3 at the thalweg.
  • Type: Nominal
  • Missing values: None specified
SC_US_CM
  • Label: Specific conductivity
  • Definition: Actual specific conductivity of treatment solution
  • Type: Physical quantity
  • Unit: microSiemensPerCentimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
WET_SED_MASS_G
  • Label: Wet sediment mass
  • Definition: Initial sediment mass under field moisture conditions.
  • Type: Physical quantity
  • Unit: grams
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
VWC
  • Label: Volumetric water content
  • Definition: Volumetric water content in decimal percent.
  • Type: Nominal
  • Missing values: None specified
DRY_SED_MASS_G
  • Label: Dry sediment mass
  • Definition: Estimated dry sediment mass based on WET_SED_MASS_g and VWC.
  • Type: Physical quantity
  • Unit: grams
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
SOL_VOL
  • Label: Solution volume
  • Definition: Treatment solution volume added to sample.
  • Type: Physical quantity
  • Unit: milliliter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
K_MGL
  • Label: Potassium concentration
  • Definition: Concentration of potassium. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
CL_MGL
  • Label: Chloride concentration
  • Definition: Concentration of chloride. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NH4_MGL
  • Label: Ammonium concentration
  • Definition: Concentration of nitrogen as ammonium. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NH4_UG_G_DRY_SED
  • Label: Normalized ammonium concentration
  • Definition: Normalized mass of nitrogen as ammonium per gram of dry sediment. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: microgramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NO3_MGL
  • Label: Nitrate concentration
  • Definition: Concentration of nitrogen as nitrate plus nitrite. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NO3_UG_G_DRY_SED
  • Label: Normalized nitrate concentration
  • Definition: Normalized mass of nitrogen as nitrate plus nitrite per gram of dry sediment. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: microgramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
COMMENTS
  • Label: Comments
  • Definition: Comments regarding blank cells.
  • Type: Nominal
  • Missing values: None specified

Short name: 

VG_DESORP

Dataset ID: 

9037
People

Principal Investigator(s): 

Contact: 

Associated Personnel: 

Data Manager