Data Package Metadata   View Summary

Sediment trap time series data for Beaverdam Reservoir and Falling Creek Reservoir in southwestern Virginia, USA 2018 through 2023

General Information
Data Package:
Local Identifier:edi.1474.3
Title:Sediment trap time series data for Beaverdam Reservoir and Falling Creek Reservoir in southwestern Virginia, USA 2018 through 2023
Alternate Identifier:DOI PLACE HOLDER
Abstract:

Sediment traps were deployed to assess the mass and composition (lithium, sodium, magnesium, aluminum, silicon, potassium, calcium, iron, manganese, copper, strontium, barium, total organic carbon, and total nitrogen) of settling particulates in the water column of two drinking water reservoirs—Beaverdam Reservoir and Falling Creek Reservoir, both located in Vinton, Virginia, USA. Sediment traps were deployed at two depths in each reservoir to capture both epilimnetic and hypolimnetic (total) sediment flux. The particulates were collected from the traps approximately fortnightly from April to December from 2018 to 2023, then filtered, dried, and analyzed for either lithium, sodium, magnesium, aluminum, silicon, potassium, calcium, iron, manganese, copper, strontium, and barium or total organic carbon and total nitrogen (2018 to 2022, due to instrument repairs). Beaverdam and Falling Creek are owned and operated by the Western Virginia Water Authority as primary or secondary drinking water sources for Roanoke, Virginia. The sediment trap dataset consists of logs detailing the sample filtering process, the mass of dried particulates from each filter, and the raw concentration data for lithium (Li), sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), potassium (K), calcium (Ca), iron (Fe), manganese (Mn), copper (Cu), strontium (Sr), barium (Ba), total organic carbon (TOC) and total nitrogen (TN). The final products are the calculated downward fluxes of solid Li, Na, Mg, Al, Si, K, Ca, Fe, Mn, Cu, Sr, Ba, TOC, and TN during the aforementioned deployment periods.

Publication Date:2024-09-13
For more information:
Visit: DOI PLACE HOLDER

Time Period
Begin:
2018-05-21
End:
2023-12-04

People and Organizations
Contact:Schreiber, Madeline E. (Virginia Tech) [  email ]
Creator:Schreiber, Madeline E. (Virginia Tech)
Creator:Wood, Cecelia E. (Virginia Tech)
Creator:Bauer, Carly E. (Virginia Tech)
Creator:Breef-Pilz, Adrienne (Virginia Tech)
Creator:Haynie, George (Virginia Tech)
Creator:Tipper, Evelyn (Virginia Tech)
Associate:Parks, Jeffery (Virginia Tech, analytical chemist)

Data Entities
Data Table Name:
Flux Summary
Description:
Summary of sediment, carbon, nitrogen, and metal fluxes
Data Table Name:
Filtering log
Description:
Sediment trap filtering log
Data Table Name:
Fluxes
Description:
Carbon, nitrogen, and metal fluxes
Data Table Name:
Site desciptions
Description:
Sampling site descriptions
Other Name:
Flux summary script
Description:
Script to summarize sediment, carbon, nitrogen, and metal fluxes
Other Name:
Metals flux script
Description:
Metals flux calculations script
Other Name:
Carbon and nitrogen flux script
Description:
Carbon and nitrogen flux calculations script
Other Name:
Filtering log script
Description:
Script to generate filtering log record for EDI
Detailed Metadata

Data Entities


Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/edi/1474/3/93a93a06a84ce6a7bda259dc01a2dbc9
Name:Flux Summary
Description:Summary of sediment, carbon, nitrogen, and metal fluxes
Number of Records:302
Number of Columns:33

Table Structure
Object Name:FluxSummary.csv
Size:100624 bytes
Authentication:692a8b223113983140c2024c30db4628 Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 
Column Name:Date  
Reservoir  
Depth_m  
AvgSedFlux_gm2d  
TLiFlux_gm2d  
TNaFlux_gm2d  
TMgFlux_gm2d  
TAlFlux_gm2d  
TSiFlux_gm2d  
TKFlux_gm2d  
TCaFlux_gm2d  
TFeFlux_gm2d  
TMnFlux_gm2d  
TCuFlux_gm2d  
TSrFlux_gm2d  
TBaFlux_gm2d  
TOCFlux_gm2d  
TNFlux_gm2d  
Flag_AvgSedFlux_gm2d  
Flag_TLiFlux_gm2d  
Flag_TNaFlux_gm2d  
Flag_TMgFlux_gm2d  
Flag_TAlFlux_gm2d  
Flag_TSiFlux_gm2d  
Flag_TKFlux_gm2d  
Flag_TCaFlux_gm2d  
Flag_TFeFlux_gm2d  
Flag_TMnFlux_gm2d  
Flag_TCuFlux_gm2d  
Flag_TSrFlux_gm2d  
Flag_TBaFlux_gm2d  
Flag_TOCFlux_gm2d  
Flag_TNFlux_gm2d  
Definition:Date of sampling. All data were collected in the eastern time zone of the U.S.A., with daylight savings time observedThree-letter code corresponding to sampled reservoirWater depth where the sample was collected or sensor reading was measuredCalculated downward flux of total sedimentCalculated downward flux of total lithiumCalculated downward flux of total sodiumCalculated downward flux of total magnesiumCalculated downward flux of total aluminumCalculated downward flux of total siliconCalculated downward flux of total potassiumCalculated downward flux of total calciumCalculated downward flux of total ironCalculated downward flux of total manganeseCalculated downward flux of total copperCalculated downward flux of total strontiumCalculated downward flux of total bariumCalculated downward flux of total organic carbonCalculated downward flux of total nitrogenData flag for AvgSedFlux_gm2dData flag for TLiFlux_gm2dData flag for TNaFlux_gm2dData flag for TMgFlux_gm2dData flag for TAlFlux_gm2dData flag for TSiFlux_gm2dData flag for TKFlux_gm2dData flag for TCaFlux_gm2dData flag for TFeFlux_gm2dData flag for TMnFlux_gm2dData flag for TCuFlux_gm2dData flag for TSrFlux_gm2dData flag for TBaFlux_gm2dData flag for TOCFlux_gm2dData flag for TNFlux_gm2d
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Measurement Type:dateTimenominalratioratioratioratioratioratioratioratioratioratioratioratioratioratioratiorationominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
FormatYYYY-MM-DD
Precision
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeBVR
DefinitionBeaverdam Reservoir
Source
Code Definition
CodeFCR
DefinitionFalling Creek Reservoir
Source
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Max10 
UnitgramPerMeterSquaredPerDay
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Max16.0973334250996 
UnitgramPerMeterSquaredPerDay
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Max0.000680126632767897 
UnitgramPerMeterSquaredPerDay
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Max0.0455377806698 
UnitgramPerMeterSquaredPerDay
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UnitgramPerMeterSquaredPerDay
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Max0.41670744135222 
UnitgramPerMeterSquaredPerDay
Typereal
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Max0.0436757235209457 
UnitgramPerMeterSquaredPerDay
Typereal
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Max0.0256572056926111 
UnitgramPerMeterSquaredPerDay
Typereal
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Max0.222018007327796 
UnitgramPerMeterSquaredPerDay
Typereal
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Max5.06659767455715 
UnitgramPerMeterSquaredPerDay
Typereal
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Max0.189950597288724 
UnitgramPerMeterSquaredPerDay
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UnitgramPerMeterSquaredPerDay
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UnitgramPerMeterSquaredPerDay
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UnitgramPerMeterSquaredPerDay
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Max1.80114513164065 
UnitgramPerMeterSquaredPerDay
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Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionData flags are present for one or more of the variables used to calculate this value. See FilteringLog_EDI.csv or CN_Metals_Flux_EDI.csv
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionValues for two replicate sediment traps averaged
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Missing Value Code:
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
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CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
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CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
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CodeNA
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CodeNA
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CodeNA
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CodeNA
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CodeNA
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CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
Accuracy Report:                                                                  
Accuracy Assessment:                                                                  
Coverage:                                                                  
Methods:                                                                  

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/edi/1474/3/6ed09a305c8fd0dc628018b564753f21
Name:Filtering log
Description:Sediment trap filtering log
Number of Records:2061
Number of Columns:19

Table Structure
Object Name:FilteringLog_EDI.csv
Size:255056 bytes
Authentication:3dd245038b2dd4ad88ee00ff9906e01f Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 
Column Name:Reservoir  
Date  
Site  
Duration_days  
Depth_m  
TrapRep  
TrapXSA_m2  
TrapVol_L  
CollectionVol_L  
FilterRep  
FilterVol_L  
FilterMassPre_g  
FilterMassPost_g  
SedMass_g  
SedFlux_gm2d  
FilterID  
Flag_CollectionVol_L  
Flag_SedMass_g  
Flag_Duration_days  
Definition:Three-letter code corresponding to sampled reservoirDate of sampling. All data were collected in the eastern time zone of the U.S.A., with daylight savings time observedSampling site within each reservoirDuration of deployment/ time between collection pointsWater depth where the sample was collected or sensor reading was measuredReplicate number of sedimentation trap tube at a specified depthTrap cross sectional areaTotal trap volume when fullVolume collected from trapReplicate number of filter for a specified replicate and depthVolume of collected sample that was filteredMass of filter before filteringMass of filter after filteringMass of sediment on filter after filteringCalculated downward flux of total sedimentIdentification code for filter (Reservoir_Depth_TrapRep_FilterRep_Date)Data flag for CollectionVolume (L)Data flag for SedMass (g)Data flag for Duration (days)
Storage Type:string  
date  
float  
float  
float  
float  
float  
float  
float  
float  
float  
float  
float  
float  
float  
string  
string  
string  
string  
Measurement Type:nominaldateTimeratioratioratioratioratioratioratioratioratioratioratioratiorationominalnominalnominalnominal
Measurement Values Domain:
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeBVR
DefinitionBeaverdam Reservoir
Source
Code Definition
CodeFCR
DefinitionFalling Creek Reservoir
Source
FormatYYYY-MM-DD
Precision
Unitdimensionless
Typenatural
Min50 
Max50 
UnitnominalDay
Typenatural
Min
Max42 
Unitmeter
Typenatural
Min
Max10 
Unitdimensionless
Typenatural
Min
Max
UnitsquareMeter
Typereal
Min0.0040715 
Max0.0040715 
Unitliter
Typereal
Min1.8 
Max1.8 
Unitliter
Typereal
Min0.47 
Max4.52 
Unitdimensionless
Typenatural
Min
Max
Unitliter
Typereal
Min0.02 
Max0.99 
Unitgram
Typereal
Min0.105 
Max0.16233 
Unitgram
Typereal
Min0.097 
Max0.17385 
Unitgram
Typereal
Min
Max0.056 
UnitgramPerMeterSquaredPerDay
Typereal
Min
Max25.1043841336117 
DefinitionIdentification code for filter (Reservoir_Depth_TrapRep_FilterRep_Date)
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionCollection volume was not recorded and set to 1.7 L
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionMissing value
Source
Code Definition
Code3
DefinitionNegative value; set to NA
Source
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Code1
DefinitionNo issues
Source
Code Definition
Code2
DefinitionDeployment date not recorded; inferred
Source
Missing Value Code:
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
CodeNA
ExplNo data
Accuracy Report:                                      
Accuracy Assessment:                                      
Coverage:                                      
Methods:                                      

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/edi/1474/3/1a559f00566ed9f9f33ccb0daab0bef5
Name:Fluxes
Description:Carbon, nitrogen, and metal fluxes
Number of Records:732
Number of Columns:71

Table Structure
Object Name:CN_Metals_Flux_EDI.csv
Size:511633 bytes
Authentication:c0fcff847cb31445512aa33fc990b4cb Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 
Column Name:Reservoir  
Date  
Site  
Duration_days  
Depth_m  
CombinedXSA_m2  
Filter1ID  
Filter2ID  
CombinedCollectionVol_L  
CombinedFilterVol_L  
CombinedSedMass_g  
ICPTLi_mgL  
ICPTNa_mgL  
ICPTMg_mgL  
ICPTAl_mgL  
ICPTSi_mgL  
ICPTK_mgL  
ICPTCa_mgL  
ICPTFe_mgL  
ICPTMn_mgL  
ICPTCu_mgL  
ICPTSr_mgL  
ICPTBa_mgL  
AcidVol_L  
DilutionFactor  
TLi_g  
TNa_g  
TMg_g  
TAl_g  
TSi_g  
TK_g  
TCa_g  
TFe_g  
TMn_g  
TCu_g  
TSr_g  
TBa_g  
TLiFlux_gm2d  
TNaFlux_gm2d  
TMgFlux_gm2d  
TAlFlux_gm2d  
TSiFlux_gm2d  
TKFlux_gm2d  
TCaFlux_gm2d  
TFeFlux_gm2d  
TMnFlux_gm2d  
TCuFlux_gm2d  
TSrFlux_gm2d  
TBaFlux_gm2d  
TOC_g  
TN_g  
TOCFlux_gm2d  
TNFlux_gm2d  
Flag_Filter2ID  
Flag_CombinedCollectionVol_L  
Flag_CombinedSedMass_g  
Flag_TOC_g  
Flag_TN_g  
Flag_ICPTLi_mgL  
Flag_ICPTNa_mgL  
Flag_ICPTMg_mgL  
Flag_ICPTAl_mgL  
Flag_ICPTSi_mgL  
Flag_ICPTK_mgL  
Flag_ICPTCa_mgL  
Flag_ICPTFe_mgL  
Flag_ICPTMn_mgL  
Flag_ICPTCu_mgL  
Flag_ICPTSr_mgL  
Flag_ICPTBa_mgL  
Flag_Duration_days  
Definition:Three-letter code corresponding to sampled reservoirDate of sampling. All data were collected in the eastern time zone of the U.S.A., with daylight savings time observedSampling site within each reservoirDuration of deployment/ time between collection pointsWater depth where the sample was collected or sensor reading was measuredTrap cross sectional areaIdentification code for first filter analyzed (Reservoir_Depth_TrapRep_FilterRep_Date)Identification code for second filter analyzed (Reservoir_Depth_TrapRep_FilterRep_Date)Total collection volume for two filters analyzedTotal volume of collected sample that was filtered for two filters analyzedTotal mass of sediment on filter after filtering for two filters analyzedRaw total lithium concentration of diluted digestion solutionRaw total sodium concentration of diluted digestion solutionRaw total magnesium concentration of diluted digestion solutionRaw total alumunum concentration of diluted digestion solutionRaw total silicon concentration of diluted digestion solutionRaw total potassium concentration of diluted digestion solutionRaw total calcium concentration of diluted digestion solutionRaw total iron concentration of diluted digestion solutionRaw total manganese concentration of diluted digestion solutionRaw total copper concentration of diluted digestion solutionRaw total strontium concentration of diluted digestion solutionRaw total barium concentration of diluted digestion solutionVolume of acid used in digestionFactor describing dilution of raw digestate for ICPMS analysisTotal mass of lithium in each trap (calculated)Total mass of sodium in each trap (calculated)Total mass of magnesium in each trap (calculated)Total mass of aluminum in each trap (calculated)Total mass of silicon in each trap (calculated)Total mass of potassium in each trap (calculated)Total mass of calcium in each trap (calculated)Total mass of iron in each trap (calculated)Total mass of manganese in each trap (calculated)Total mass of copper in each trap (calculated)Total mass of strontium in each trap (calculated)Total mass of barium in each trap (calculated)Calculated downward flux of total lithiumCalculated downward flux of total sodiumCalculated downward flux of total magnesiumCalculated downward flux of total aluminumCalculated downward flux of total siliconCalculated downward flux of total potassiumCalculated downward flux of total calciumCalculated downward flux of total ironCalculated downward flux of total manganeseCalculated downward flux of total copperCalculated downward flux of total strontiumCalculated downward flux of total bariumTotal organic carbon in each trapTotal nitrogen in each trapCalculated downward flux of total organic carbonCalculated downward flux of total nitrogenFlag indicating when only one filter was used for a given analysisData flag for CombinedCollectionVol (L)Data flag for CombinedSedMass (g)Data flag for TOC (g)Data flag for TN (g)Data flag for ICPTLi (mg/L)Data flag for ICPTNa (mg/L)Data flag for ICPTMg (mg/L)Data flag for ICPTAl (mg/L)Data flag for ICPTSi (mg/L)Data flag for ICPTK (mg/L)Data flag for ICPTCa (mg/L)Data flag for ICPTFe (mg/L)Data flag for ICPTMn (mg/L)Data flag for ICPTCu (mg/L)Data flag for ICPTSr (mg/L)Data flag for ICPTBa (mg/L)Data flag for Duration (days)
Storage Type:string  
date  
float  
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float  
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string  
string  
float  
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float  
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float  
float  
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float  
float  
float  
float  
float  
float  
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float  
float  
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float  
float  
float  
float  
float  
float  
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float  
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Measurement Type:nominaldateTimeratioratioratiorationominalnominalratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratioratiorationominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeBVR
DefinitionBeaverdam Reservoir
Source
Code Definition
CodeFCR
DefinitionFalling Creek Reservoir
Source
FormatYYYY-MM-DD
Precision
Unitdimensionless
Typenatural
Min50 
Max50 
UnitnominalDay
Typenatural
Min
Max42 
Unitmeter
Typenatural
Min
Max10 
UnitsquareMeter
Typereal
Min0.0040715 
Max0.008143 
DefinitionIdentification code for first filter analyzed (Reservoir_Depth_TrapRep_FilterRep_Date)
DefinitionIdentification code for second filter analyzed (Reservoir_Depth_TrapRep_FilterRep_Date)
Unitliter
Typereal
Min0.47 
Max4.52 
Unitliter
Typereal
Min0.04 
Max1.9 
Unitgram
Typereal
Min0.00199999999999998 
Max0.101 
UnitmilligramPerLiter
Typereal
Min0.00210508719179842 
Max0.0407595601507363 
UnitmilligramPerLiter
Typereal
Min0.053314370073987 
Max0.882896037613194 
UnitmilligramPerLiter
Typereal
Min0.0388662268348808 
Max3.26458351315627 
UnitmilligramPerLiter
Typereal
Min0.463920216341664 
Max20.5405511863665 
UnitmilligramPerLiter
Typereal
Min-0.110230405173966 
Max0.731044071890644 
UnitmilligramPerLiter
Typereal
Min0.0790149807863834 
Max1.04088186260614 
UnitmilligramPerLiter
Typereal
Min0.523673854901886 
Max18.4762694663832 
UnitmilligramPerLiter
Typereal
Min1.74808224394256 
Max139.613036518581 
UnitmilligramPerLiter
Typereal
Min0.0452372346116647 
Max6.33546702463211 
UnitmilligramPerLiter
Typereal
Min0.000517594177703615 
Max0.184717970035048 
UnitmilligramPerLiter
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Accuracy Report:                                                                                                                                              
Accuracy Assessment:                                                                                                                                              
Coverage:                                                                                                                                              
Methods:                                                                                                                                              

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/edi/1474/3/d6b5588600826fd75ff86f86c6c6ae53
Name:Site desciptions
Description:Sampling site descriptions
Number of Records:2
Number of Columns:5

Table Structure
Object Name:site_descriptions.csv
Size:257 bytes
Authentication:dbc1ecdc0ff0582d2e1c5e1806e0e33e Calculated By MD5
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Number of Header Lines:1
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Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 
Column Name:Reservoir  
Site  
Site_description  
Latitude  
Longitude  
Definition:Three-letter code corresponding to sampled reservoirSampling site within each reservoirDescription of sampling siteSite latitudeSite longitude
Storage Type:string  
float  
string  
float  
float  
Measurement Type:nominalrationominalratioratio
Measurement Values Domain:
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeBVR
DefinitionBeaverdam Reservoir
Source
Code Definition
CodeFCR
DefinitionFalling Creek Reservoir
Source
Unitdimensionless
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Min50 
Max50 
DefinitionDescription of sampling site
Unitdegree
Typereal
Min37.30325 
Max37.31288 
Unitdegree
Typereal
Min-79.8373 
Max-79.8159 
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Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Non-Categorized Data Resource

Name:Flux summary script
Entity Type:unknown
Description:Script to summarize sediment, carbon, nitrogen, and metal fluxes
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Name:Metals flux script
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Data:https://pasta-s.lternet.edu/package/data/eml/edi/1474/3/af25a3d13ec4a30c9975e98a01b3b1b0

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required 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 co-authorship 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.

Keywords

By Thesaurus:
carey lab controlled vocabularyVirginia Tech, Stream Team, Carey Lab, Western Virginia Water Authority, Falling Creek Reservoir, Beaverdam Reservoir, metals, sediment trap, suspended sediment, LTREB, Virginia Reservoirs, BVR, FCR
cuahsi controlled vocabularyreservoir, total lithium, total sodium, total magnesium, total aluminum, total silicon, total potassium, total calcium, total copper, total iron, total manganese, total strontium, total barium, lake
lter controlled vocabularylakes, carbon, nitrogen, sediments, sedimentation, particulates

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package
Description:

SAMPLE COLLECTION, SAMPLE FILTRATION, AND EQUIPMENT

We deployed sedimentation traps (KC Denmark A/S) at the deepest sites (site 50) in Falling Creek Reservoir (FCR) and Beaverdam Reservoir (BVR) to capture settling particulates within the water column. The particulates were collected from the traps approximately fortnightly from April to December from 2018 to 2023. In FCR, two sedimentation traps were deployed at 4m and 8m. Two sedimentation traps were deployed in BVR at 4m and 8m, except for 2021 when they were deployed at 5m and 10m. Each trap contained two tubes with openings of 7.2 cm in diameter. During sampling, the traps were brought to the surface and the mixture of water and particulates was poured into opaque bottles. Sampling was conducted between 9 AM and 4 PM on the date of sampling.

Samples were stored on ice upon transport to the laboratory and were subsequently stored in a refrigerator until sample processing, usually within 48 hours. Samples were processed using vacuum-filtration through pre-weighed glass microfiber filters (1.5 mm; Whatman 934-AH). The filters containing particulates were then dried at 45 C in a drying oven and the retained mass was calculated by difference from the final and starting mass of the filter. Data on volumes of sample and mass of dried particulates are included in the filtering log.

BVR has experienced fluctuations in water level throughout the data collection period, including a managed drawdown event in 2022. Sedimentation traps were deployed at the specified depth and remained at a fixed height above the sediment, regardless of water level fluctuation after the day of deployment. Known deployment dates are 19 July 18 at BVR, 15 April 19 at FCR, 08 April 19 at BVR, 24 May 21 in FCR, 12 April 22 in FCR and BVR, 12 April 23 in FCR and BVR. Please refer to the BVR catwalk dataset (doi:10.6073/pasta/4182de376fde52e15d493fdd9f26d0c7) for more information on water level and depth.

CHEMICAL ANALYSES AND EQUIPMENT

Metals

We determined the particulate metal flux by digesting the dried particulate matter retained on the filters and analyzing the digestion solution for Li, Na, Mg, Al, Si, K, Ca, Fe, Mn, Cu, Sr, Ba concentrations. In 2018 and 2019, one filter from each replicate was combined for digestion and analysis. From 2020 to the present, replicates were not combined. Two filters from within each replicate were digested and analyzed. The dried particulates were microwave-digested with trace metal grade nitric acid following EPA Method 3051A (United States Environmental Protection Agency, 1995). The digestate solution was diluted and we analyzed the resulting solution for Li, Na, Mg, Al, Si, K, Ca, Fe, Mn, Cu, Sr, Ba using ICP-MS. The relative proportion of metals in the collected sediment is calculated by multiplying the ICP concentration, corrected for dilution, by the amount of acid used in the digestion and dividing by the combined sediment mass of the two filters. The total amount of each metal in each sedimentation trap is calculated by multiplying the ICP concentration by the amount of acid used in the digestion, multiplying by the ratio of the collection volume to the volume filtered, and correcting for the dilution. The downward metal flux was calculated by dividing the total metal mass by the cross-sectional area of the sedimentation trap tubes and dividing by the deployment duration.

TOC and TN

Filters for TOC and TN analysis were run on a CN analyzer (Elementar VarioMax, Ronkonkoma, NY, USA). We used two filters for CN analysis per sampling date. The mass of TOC and TN in the collected sediment is calculated by multiplying the carbon or nitrogen percentage from the CN analyzer by the combined sediment mass of the two filters. The total amount of TOC and TN in each sedimentation trap is calculated by multiplying the CN percentage by ratio of the collection volume to the volume filtered. The downward TOC and TN flux was calculated by dividing the total TOC and TN mass by the cross-sectional area of the sedimentation trap tubes and dividing by the deployment duration.

The CN analyzer underwent repairs in 2023. Thus, there is no CN data for the 2023 season. Once the instrument is repaired, the 2023 data will be included in the following revision.

Erratum

The previous revision of this data package incorrectly calculated total masses. Please refrain from using previous package.

People and Organizations

Publishers:
Organization:Environmental Data Initiative
Email Address:
info@edirepository.org
Web Address:
https://edirepository.org
Id:https://ror.org/0330j0z60
Creators:
Individual: Madeline E. Schreiber
Organization:Virginia Tech
Email Address:
mschreib@vt.edu
Id:https://orcid.org/0000-0002-1858-7730
Individual: Cecelia E. Wood
Organization:Virginia Tech
Email Address:
cecelia@vt.edu
Id:https://orcid.org/0000-0003-1488-2174
Individual: Carly E. Bauer
Organization:Virginia Tech
Email Address:
carlyeb@vt.edu
Id:https://orcid.org/0009-0006-5955-8932
Individual: Adrienne Breef-Pilz
Organization:Virginia Tech
Email Address:
abreefpilz@vt.edu
Id:https://orcid.org/0000-0002-6759-0063
Individual: George Haynie
Organization:Virginia Tech
Email Address:
georgeh0919@vt.edu
Id:https://orcid.org/0009-0003-2316-2037
Individual: Evelyn Tipper
Organization:Virginia Tech
Email Address:
etipper@vt.edu
Id:https://orcid.org/0009-0001-7898-1957
Contacts:
Individual: Madeline E. Schreiber
Organization:Virginia Tech
Email Address:
mschreib@vt.edu
Id:https://orcid.org/0000-0002-1858-7730
Associated Parties:
Individual: Jeffery Parks
Organization:Virginia Tech
Email Address:
jparks@vt.edu
Role:analytical chemist

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period
Begin:
2018-05-21
End:
2023-12-04
Geographic Region:
Description:Beaverdam Reservoir is located in Vinton, Virginia, USA
Bounding Coordinates:
Northern:  37.322865Southern:  37.311961
Western:  -79.824834Eastern:  -79.813848
Geographic Region:
Description:Falling Creek Reservoir is located in Vinton, Virginia, USA
Bounding Coordinates:
Northern:  37.309589Southern:  37.30266
Western:  -79.839249Eastern:  -79.836009

Project

Parent Project Information:

Title:N/A
Personnel:
Individual: Cayelan C. Carey
Id:https://orcid.org/0000-0001-8835-4476
Role:Principal Investigator
Funding: Western Virginia Water Authority N/A
Related Project:
Title:Collaborative Research: URoL:ASC: Applying rules of life to forecast emergent behavior of phytoplankton and advance water quality management
Personnel:
Individual: Cayelan C. Carey
Id:https://orcid.org/0000-0001-8835-4476
Role:Principal Investigator
Funding: National Science Foundation 2318861
Related Project:
Title:Collaborative Research: Consequences of changing oxygen availability for carbon cycling in freshwater ecosystems
Personnel:
Individual: Cayelan C. Carey
Id:https://orcid.org/0000-0001-8835-4476
Role:Principal Investigator
Funding: National Science Foundation 1753639
Related Project:
Title:Using a Nanoscale to Whole-Ecosystem Scale Approach to Examine the Role of Reactive Metal Hydroxide Nanoparticles in Drinking Water Reservoir
Personnel:
Individual: Madeline E. Schreiber
Id:https://orcid.org/0000-0002-1858-7730
Role:Principal Investigator
Funding: Virginia Tech College of Science N/A
Related Project:
Title:LTREB: Integrating real-time open data pipelines and forecasting to quantify ecosystem predictability at day to decadal scales
Personnel:
Individual: Cayelan C. Carey
Id:https://orcid.org/0000-0001-8835-4476
Role:Principal Investigator
Funding: National Science Foundation 2327030
Related Project:
Title:Collaborative Research: CIBR: Cyberinfrastructure Enabling End-to-End Workflows for Aquatic Ecosystem Forecasting
Personnel:
Individual: Cayelan C. Carey
Id:https://orcid.org/0000-0001-8835-4476
Role:Principal Investigator
Funding: National Science Foundation 1933016

Maintenance

Maintenance:
Description:ongoing
Frequency:

Additional Info

Additional Information:
 

Author Contributions

MES has been PI for the sediment trap project since 2014 and has overseen the development of the sampling, lab protocols and data analysis protocol. CEW has led organization, sample filtration and digestion, data analysis, and QAQC from fall 2021 to fall 2023. CEW also compiled and organized data from 2016 to present and refined sampling and data analysis protocols. CEB and CEW co-led sample collection, sample filtration and digestion, data analysis, QAQC, and publishing from fall 2023 to present. ABP led the field crew, contributed significantly to sampling from 2020 to present, and assisted substantially with QAQC workflows. GH and ET assisted with sample collection and sample filtration.

Acknowledgments

This data package has been iteratively updated over time and builds on the many historical contributions of co-authors listed in previous revisions. We thank the Western Virginia Water Authority for providing access to these sites, the Reservoir Group for contributing to fieldwork, and Gracie Litsinger for organizing and filtering samples in summer 2023. We thank MEL and ABP for constructive reviews of this data package.

Other Metadata

Additional Metadata

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EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

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