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Conditions of Use

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, educational, government, recreational, or other not-for-profit professional purposes. The Data User is permitted to produce and distribute derived works from this dataset provided that they are released under the same license terms as those accompanying this Data Set. Any other uses for the Data Set or its derived products will require explicit permission from the dataset owner.
2 ) Redistribution. The data are provided for use by the Data User. The metadata and this license must accompany all copies made and be available to all users of this Data Set. The Data User will not redistribute the original Data Set beyond this collaboration sphere.
3 ) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier. For example:

Shaver, G. 1989. Above ground biomass in acidic tussock tundra experimental site, 1989, Arctic LTER, Toolik, Alaska. Arctic LTER, Marine Biological Lab, Woods Hole, Ma 02543. 1989gsttbm http://ecosystems.mbl.edu/arc/terrest/biomass/index.shtml 

4 ) Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. For example:

Data sets were provided by the Arctic LTER. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493.

5 ) Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
6 ) Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.

Disclaimer

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

Dataset URLs:METADATA: HTML, Rich Text, XML(EML compliant)
DATA: Comma Delimited, Excel file with Metadata and data, Dataset via LTER Data Poral
Dataset ID:20022004gsimwatchem.02
Dataset Title:water chemistry of Imnavait watershed during 2002-2004
Investigator 1: 
First Name:Gus
Last Name:Shaver
Organization:Ecosystems Center
Address line 2:Marine Biological Lab
Address line 3:
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 2: 
First Name:Yuriko
Last Name:Yano
Organization:Ecosystems Center
Address line 2:Marine Biological Lab
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 3: 
First Name:Anne
Last Name:Giblin
Organization:
Address line 2:
City:
State:
Zip Code:
Country:
Investigator 4: 
First Name:Ed
Last Name:Rastteter
Investigator 5: 
First Name:Jim
Last Name:Laundre
Investigator 6: 
First Name:Erica
Last Name:Steive
Associate Investigators:
Keywords:lysimeter water, soil extracts, soil water, nitrate, ammonium, dissolved organic nitrogen, dissolved organic carbon, inorganic nutrients, organic matter
Abstract:Water chemistry (NO3, NH4, TDN, DON, DOC) from Imnavait watershed along hillslope. Sample waters were either collected by lysimeters, needle with syringe, or extracting soil with water or 1N KCl.
For questions about the Metadata and data contact the Investigators.
For information about this web site contact:
Arctic LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7496
Email: arc_im@mbl.edu
Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
Data File URL http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.10182&urlTail=terrest/bulk/data/20022004gsimwatchem.csv
Data File Name 20022004gsimwatchem.dat
Beginning Date 7/11/2002
End Date 7/29/2004
Number of Data Records 638
Other Files to Reference
Availability Status 1
Quality Control Information
Maintenance Description
Log of Changes: Updated Metadata sheet
Version 2: Updated units to current standards. Updated metadata form to newer version (without site sheet). Fixed discrepency with header variable names. Moved cardinal directions entered in "distance" column to "comments" column. CH 24 Jan 2013 Updated to newer metadata with site sheet. CH March 2013.
Version 2: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 27Jan14
 
RESEARCH LOCATION:                                            
Location Name Imnaviat watershed- eastern slope Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One  
Geographic Description Eastern slope of Imnavait watershed. Within ~1km of south side of the main weir, ~4 km south of Dalton Hwy. Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description  
Location Bounding Box                                            
West Bounding Coordinate                                            
East Bounding Coordinate                                            
North Bounding Coordinate                                            
South Bounding Coordinate                                            
OR if single point location                                            
Latitude 68.6081 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Longitude -149.3078 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Elevation In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters  
Link to Google Map View on Google Map                                          
                                             
 
TAXONOMIC COVERAGE:
Organisms studied
 
Methods:Field
Lysim (2002) : Four solimoisture collectors were installed within organic or mineral soil horizon at each location. Water was pooled by depth and by location proir to analysis.
Lysim (2003-2004) : Solimoisture collectors were installed within 15N addition plots at 10 and 20cm below surface (5 each at 2 depths= 10 per plot). Water was pooled by depth and by plot prior to analysis.
Downslope: Water was collected from >3 locations within, immediately below, or above the 15N addition plots by a needle with syringe that was inserted to the bottom of active layer.
Soilextr: Soil cores were taken from each plot (5 cores per plot), live roots had-picked, then subsamples of the core was extracted with DI water (water:soil=1:10 for top 10cm soil, 1:5 for next 10cm soil) or 1KCl (KCl:soil = 1:10)
Snowmelt: Water was collected under snow packs by a needle with syringe that was inserted horizontally to a layer of soil that was not frozen (1-2 cm deep)
Soilmelt: Water was collected after most of the snow at the site disappeared by a needle with syringe that was inserted horizontally to the frozen layer of soil. (1-5 cm deep)
Stream: stream water collected from the nearest section of the stream from the sampling site.
Snow: Snow cover collected by a PVC snow corere just before spring snowmelt. The bottom of the snow core was removed to minimize contamination of vegetation and soil.

Lab
NO3: Cd reduction followed by Griess-Ilosvay method for NO2
NH4: Berthelot method
TDN: Persulfate oxidation followed by NO3 method
DON: TDN-NO3-NH4
DOC: High-temperature combustion after removing DIC by sparging

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
Date sampling date datetime   DD-MMM-YYYY    
Site Sampling site within Imnavait watershed (WT7=watertrack #7 that has a wier; NWT7=non-watertrack area adjacent to WT7; WT12-14=WT #12-14; 15N addition = 15N addition site located within and adjacent to two major watertracks south of WT#14, ~1km south of the main weir; Weir = below the colvert located below the main weir; approxWT1214 = approximately the area where WT 12-14 were located) text        
Type Type of water samples (lysim=lysimeter water; ST=stream water; downslope=water collected above or below 15N addition plots using a needle attached to syringe; soilextr(H2O)=water-extracts of soil; soilextr(KCl)= KCl-extracts of soil; snowmelt=melting water under snow packs; soilmelt= melting water after dissapearance of snow packs; ST= stream water; Snow= snow cover collected just before spring snowmelt) text        
Location Water sampling locations along the hillslope. CR=crest; US=upper mid slope; LS=lower mid slope; FS=footslope; R= riparian wetsedge tundra; Main weir = at weir in Imnavait Creek; WT weir=weir on watertrack7; A, B=crest (heath tundra); C, E= non-watertrack on lower mid slope (tussock tundra); D, F=watertrack on lower mid slope (tussock tundra); G, I = watertrack on footslope (tussock tundra); H, J =non-watertrack on footslope (tussock tundra) ; K, L = riparian (wetsedge tundra) text        
Distance Distance (m) from the closest edge of 15N added plot. Below (shonw as positive values) and above (shown as negative values) the plots. Distance=0m indicates within the plots. number meter     #N/A=Missing or Not Measured
Layer type of soil layer (O = organic layer; M = mineral layer; OM = organic and mineral mixed layer) text       #N/A=Missing or Not Measured
Depth depth of soil from where water samples were collected, or from which organic matter was extracted from number centimeter     #N/A=Missing or Not Measured
NO3 nitrate concentration in uM number micromole     #N/A=Missing or Not Measured
NH4 ammonium concentration in uM number micromole     #N/A=Missing or Not Measured
TDN total dissolved N in uM number micromole     #N/A=Missing or Not Measured
DON dissolved organic N in uM number micromole     #N/A=Missing or Not Measured
DOC dissolved organic C in uM number micromole     #N/A=Missing or Not Measured
Comments Cardinal direction recorded in location column text        

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