This codebook.txt file was generated on <20180226> by <Samuel Fahrner Ward>


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GENERAL INFORMATION
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1. Title of Dataset: Correlates of spread rates for introduced insects


2. Author Information


  Principal Investigator Contact Information
        Name: Samuel Fahrner Ward
           Institution: University of Minnesota, Twin Cities
           Address: 219 Hodson Hall, 1980 Folwell Ave, Falcon Heights, MN 55108
           Email: fahr0051@umn.edu


  Associate or Co-investigator Contact Information
        Name: Brian H. Aukema
           Institution: University of Minnesota, Twin Cities
           Address: 219 Hodson Hall, 1980 Folwell Ave, Falcon Heights, MN 55108
           Email: bhaukema@umn.edu

3. Date of data collection
   20150101 to 20151231





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SHARING/ACCESS INFORMATION
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1. Licenses/restrictions placed on the data:
   Attribution-NonCommercial-NoDerivs 3.0 United States <https://creativecommons.org/licenses/by-nc-nd/3.0/us/>

2. Links to publications that cite or use the data:
   
No link at this time - publication in production
Fahrner Ward, Samuel and Brian H. Aukema. Correlates of spread rates for introduced insects. Global Ecology and Biogeography.

3. Was data derived from another source?
   Yes - sources are listed as a variable in the data set.

4. Recommended citation for the data:
   Fahrner Ward, Samuel; Aukema, Brian H.. (2018). Correlates of spread rates for introduced insects. Retrieved from the University of Minnesota Digital Conservancy, http://hdl.handle.net/11299/193600.


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DATA & FILE OVERVIEW
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1. File List
   A. Filename: spread_data_final       
      Short description: insect spread rate data collected from published and gray literature 

   B. Filename: spread_metadata
      Short description: individual variable descriptions




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

   Data on spread rates were collected from research articles found by searching Google Scholar using terms such as “spread invasive insect”, “spread biological control agent”, and “dispersal non-native insect.”

   Other data were collected from a variety of sources: primary literature articles; websites and/or articles produced by universities, museums and local, state and federal governments.


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DATA-SPECIFIC INFORMATION FOR: spread_data_final
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1. Number of variables:
   24

2. Number of cases/rows: 
   148



3. Missing data codes:
        A "." signifies that no information was found for that particular cell.
        


4. Variable List

	The spread_metadata file contains descriptions of each variable