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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:1999_ArcticLTER_lakes_chl.03
Dataset Title:Total Chlorophyll a and primary production data for Toolik Lake and surrounding lakes near the Arctic LTER site during the summer of 1999
Investigator 1: 
First Name:Anne
Last Name:Giblin
Organization:Marine Biological Laboratory
Address line 2:The Ecosystems Center
Address line 3:7 MBL Street
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 2: 
First Name:Chris
Last Name:Crockett
Organization:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Investigator 3: 
First Name:Neil
Last Name:Bettez
Investigator 4: 
First Name:Jennifer
Last Name:Wasik
Associate Investigators:
Keywords:chlorophyll a, pheophytin, arctic lakes, lakes
Abstract:Total Chlorophyll a and primary production data for Toolik Lake and surrounding lakes near the Arctic LTER site during the summer of 1999.
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.10222&urlTail=lakes/chlor/data/1999_ArcticLTER_lakes_chl.csv
Data File Name 1999_ArcticLTER_lakes_chl.xls
Beginning Date 5/1/1999
End Date 9/1/1999
Number of Data Records 289
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Log of changes: 1. A Turner 111 fluorometer was used from 1975-1991. 2. A Turner 450 Fluorometer using a NB 440 filter was used starting in 1992- 1994. 3. A Turner 450 Fluorometer using a NB 430 filter was used starting in 1995 until 1998. 4. Starting in 1998 a Turner Designs 10-Au -005 -CE configured with a chlorophyll optical kit: photomultiplier tube 185 - 870; lamp daylight white, F45T5, 400-600 nm; excitation filter 340-500 nm round bandpass 5-60; emission filter >665 nm round sharpcut 2-64; reference filter 400-700 nm square 1 ND,was used to measure chlorophyll. For Archival Use: DATE RECEIVED: September 1999 DATA FILE ENTERED BY: Neil Bettez DATA FILE VALIDATION: NAME: Neil Bettez DATE: September 1999
Version 1: Metadata updated to newer version (with sites sheet). Data from individual lakes compiled into one spreadsheet for summer 1999 called "1999_ArcticLTER_lakes_chl". Data columns reordered to match other years. CH 3 Apr 2013.
Version 3: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 15Jan14
 
RESEARCH LOCATION:                                                                                        
Location Name Toolik Toolik Inlet E 01 E 05 E 06 I swamp I Swamp Inlet I Swamp Outlet I1 I1 INTO I3 I1 outlet I2 I2 INTO I3 I2 outlet I3 I3 outlet I4 I4 INTO I5 I4 outlet I5 I5 INTO I6 I5 outlet I6 I6 outlet I6 inlet west I7 I7 INTO I9 I7 outlet I8 I8 headwater I8 inlet I8 INTO I9 I8 outlet Milkyway upper N 01 N 02 NE 12 NE 9B S 01 S 11 S 02 S 06 S 07  
Geographic Description Toolik Field Station, North Slope, Alaska. Toolik Inlet Lake E1 Lake E5 Lake E6 I swamp I Swamp Inlet I Swamp Outlet I1 I1 INTO I3 I1 outlet I2 I2 INTO I3 I2 outlet I3 I3 outlet I4 I4 INTO I5 I4 outlet I5 I5 INTO I6 I5 outlet I6 I6 outlet I6 inlet west I7 I7 INTO I9 I7 outlet I8 I8 headwater I8 inlet I8 INTO I9 I8 outlet Milkyway upper Lake N1 Lake N2, N2R= reference side, N2T= fertilized side Lake NE12 Lake NE 9B Lake S1 Lake S11 Lake S2 Lake S6 Lake S7  
Location Bounding Box                                                                                        
West Bounding Coordinate                                                                                        
East Bounding Coordinate                                                                                        
North Bounding Coordinate                                                                                        
South Bounding Coordinate                                                                                        
OR if single point location                                                                                        
Latitude 68.629961 68.6256 68.6261956028 68.642611 68.6434270583 68.610781 68.61035 68.611683 68.5687130789 68.574 68.572296 68.5713195633 68.57478333 68.572546 68.5755366301 68.57754 68.57956715 68.58423333 68.58143 68.5873874391 68.59491667 68.589087 68.5965924039 68.598684 68.59688333 68.6008747982 68.61818333 68.60183 68.6101575207 68.5736666666667 68.60853333 68.61838333 68.6114075339 68.62016667 68.6398939358 68.6409472345 68.65 68.6526454831 68.6245359666 68.630148049 68.6271690786 68.6293797816 68.6300627447  
Longitude -149.612633 -149.59605 -149.555347706 -149.458079 -149.440564592 -149.600742 -149.599766 -149.599254 -149.58807625 -149.583566 -149.581014 -149.565881618 -149.58205 -149.570268 -149.583644456 -149.582003 -149.58405938 -149.5836 -149.5861 -149.589625877 -149.586316 -149.589219 -149.59264335 -149.599853 -149.60125 -149.596582063 -149.596766 -149.596713 -149.582211513 -149.537166666667 -149.587633 -149.5965 -149.590131872 -149.568166 -149.606965643 -149.625086307 -149.616666666667 -149.599473662 -149.602166091 -149.650579145 -149.611352962 -149.641623295 -149.644441789  
Elevation 719 719 762 800 792 736 736 736 785 774 785 785 774 785 774 774 770 770 770 767 754 767 754 754 754 742 728 742 744 808 744 728 744 739 731 724 699 747 720 750 720 731 731  
Link to Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map  
                                                                                         
 
TAXONOMIC COVERAGE:
Organisms studied
 
Methods:Water samples were collected at 0, 1, 3, 5, 8, 12, and 16-meter depths in the monitoring lakes and 0 meters in the survey lakes. The water was filtered in the field though a Millipore 47 mm filter cassette (SX0004700)containing a Whatman GF/C glass fiber. This filter was then returned to the lab where it was placed in 10 ml of buffered 90% acetone (1 mg/l MgCO-3), and extracted in the
dark, at room temperature for 24 hours. The amount of chlorophyll a was determined using a Turner Designs 10-Au -005 -CE configured with a chlorophyll optical kit (10-037R). This kit is used for the
traditional in-vivo measurement of chlorophyll (Lorenzen) and in-vivo /extractive acidification methods, including Strickland and parsons, standard methods for water and waste water and EPA 445.

Notes: The Turner Designs 10-Au -005 -CE fluorometer was calibrated using two chlorophyll a standards of known concentrations obtained from Turner Designs. Each time samples were run the Turner Designs 10-AU fluorometer solid standard was also run.

Reference Citations: R.G. Wetzel & G.E. Likens. 1979. Limnological Methods. Saunders.
Philadelphia.

Sampling Description.

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
Site Code site code text       .=Missing or Not Measured
Lake Site of measurement text       .=Missing or Not Measured
Depth (m) Depth number meter     .=Missing or Not Measured
Date Date datetime   DD-MMM-YY   .=Missing or Not Measured
Julian Day Julian day number number     .=Missing or Not Measured
Corrected chl a (ug/L) Corrected Chlorophyll a, active chl a number microgramPerLiter     .=Missing or Not Measured
Pheo (ug/L) Pheophytin number microgramPerLiter     .=Missing or Not Measured
Total chl a (ug/L) Total chl a (uncorrected for pheophytin) number microgramPerLiter     .=Missing or Not Measured
PPROD (mgC/m3/d) Rate of primary production (mg availabe C/m3/d) number microgramPerLiterPerDay     .=Missing or Not Measured
Notes Notes text       .=Missing or Not Measured

Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.