This readme.txt file was generated on <20201019> by <Joseph Rabaey>


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GENERAL INFORMATION
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1. High Frequency Oxygen Data from Eight Shallow Prairie Pothole Lakes, 2009-2013


2. Author Information


  Principal Investigator Contact Information
        Name: Joseph Rabaey
           Institution: University of Minnesota
           Address: 140 Gortner Laboratory,1479 Gortner Avenue,St. Paul, MN 55108
           Email: rabae005@umn.edu
	   ORCID: https://orcid.org/0000-0002-9649-4855

  Associate or Co-investigator Contact Information
        Name: James Cotner
           Institution: University of Minnesota
           Address:
           Email: cotne002@umn.edu
	   ORCID:

  Associate or Co-investigator Contact Information
           Name: Kyle Zimmer
           Institution: University of St. Thomas
           Address:
           Email: kdzimmer@stthomas.edu
	   ORCID:

Associate or Co-investigator Contact Information
           Name: Leah Domine
           Institution: University of St. Thomas
           Address:
           Email: domi7653@stthomas.edu
	   ORCID:

3. Date of data collection: 20091101 - 20130401


4. Geographic location of data collection: Prairie Pothole Region of west-cental Minnesota (centered at 45.859°N and 95.858°W)

Coordinates of each lake:
Pisa: 45.714977, -95.889997
Murk: 45.787584, -95.739876
Org: 45.891535, -95.757040
Bellevue: 45.932346, -95.857175
Blakesly: 45.972934, -95.874436
Skunk: 45.993199, -95.884847
Morrison: 46.131627, -95.892738
Mavis West: 46.263805, -96.052229

5. Information about funding sources that supported the collection of the data:
National Science Foundation (NSF): DEB-0919095; National Science Foundation (NSF): DEB-0919070


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SHARING/ACCESS INFORMATION
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1. Licenses/restrictions placed on the data:
Attribution 3.0 United States (http://creativecommons.org/licenses/by/3.0/us/)

2. Links to publications that cite or use the data: In review


3. Links to other publicly accessible locations of the data: NA


4. Links/relationships to ancillary data sets: NA


5. Was data derived from another source? No


6. Recommended citation for the data: 
Rabaey, Joseph S; Cotner, James B; Zimmer, Kyle D; Domine, Leah M. (2020). High Frequency Oxygen Data from Eight Shallow Prairie Pothole Lakes, 2009-2013. Retrieved from the Data Repository for the University of Minnesota, https://doi.org/10.13020/NER9-EB82.

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DATA & FILE OVERVIEW
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1. File List
   A. Filename: Lake Oxygen files ("lakename" Oxygen)       
      Short description: 8 files, one for each of the eight study lakes, that start with the lake name. 
Each file contains high frequency oxygen measurements taken from a deployed sonde, and includes the datetime of the measurement,
temperature (degrees celcius), pH (units), oxygen saturation (%), and oxygen concentration (mg/l).       
For each lake, the sampling frequency in the summer months is every 30 minutes, and every 4 hours in the late fall/winter.
     
   B. Filename: Lake Metabolism       
      Short description: File containing calculated metabolismn values for all 8 study lakes. File includes lake name, date, 
lake alternative stable state (clear or turbid), and daily gross primary production (GPP), ecosystem respiration (ER), and net ecosystem production (NEP),
and in mmolO2/m2/day.      

    
   C. Filename:  Lake Water Chemistry      
      Short description: Water chemistry data for all 8 study lakes. File includes date, lake name, state (clear or turbid),
location of sampling, total phosporus (TP) in ug/l, chlorophyll a (Chla) in ug/l, dissolved inorganic carbon (DIC) in mg/l,
dissolved organic carbon (DOC), in mg/l, total dissolved nitrogen (DON) in mg/l, and total nitrogen (TN) in mg/l. 
Empty cells indicate missing data.

   D. Filename:  Macrophyte biomass      
      Short description: Macrophyte biomass data for all 8 study lakes. Macrophytes were sampled by rake throws once per summer in
2010 and 2011. File includes lake name, year of sampling, depth at location, and macrophyte biomass collected on the rakethrow, in kg.


2. Relationship between files:        
All files contain data from the 8 study lakes during the study years.



3. Additional related data collected that was not included in the current data package: None




4. Are there multiple versions of the dataset? No


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METHODOLOGICAL INFORMATION
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1. Description of methods used for collection/generation of data: 
publication in review


2. Instrument- or software-specific information needed to interpret the data: NA


3. Standards and calibration information, if appropriate: NA


4. Environmental/experimental conditions: NA


5. People involved with sample collection, processing, analysis and/or submission:
Authors: Joseph Rabaey, James Cotner, Kyle Zimmer, Leah Domine.
Brian Herwig and Mark Hanson (MN DNR), and Will Hobbs assisted with data collection. 
Todd Call and Nicky-Hansel Welch, Minnesota Department of Natural Resources, helped find study sites.