This codebook.txt file was generated on 20191030 by David Wolfson ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: Data and R Code supporting "Juvenile Sandhill Crane Exhibit Wider Ranging and More Exploratory Movements Than Adults During the Breeding Season" 2. Authors: David Wolfson, University of Minnesota John Fieberg, University of Minnesota David Andersen, Minnesota Cooperative Fish and Wildlife Research Unit 3. Date of data collection: May 2014- Oct 2018 4. Geographic location of data collection: North America 5. Information about funding sources that supported the collection of the data: Funding for this project was provided by the U.S. Fish and Wildlife Service and U.S. Geological Survey through Research Work Order No.101 at the U.S. Geological Survey, Minnesota Cooperative Fish and Wildlife Research Unit; by the Minnesota Environmental and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources (LCCMR); by the U.S. Fish and Wildlife Service Webless Migratory Game Bird Program; and by the Minnesota Department of Natural Resources. -------------------------- SHARING/ACCESS INFORMATION -------------------------- Licenses/restrictions placed on the data: Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States Links to publications that cite or use the data: Wolfson, Fieberg, Andersen. 2019. Juvenile Sandhill Crane Exhibit Wider Ranging and More Exploratory Movements Than Adults During the Breeding Season. Ibis. doi:10.1111/ibi.12786 Links to other publicly accessible locations of the data: The data used for this project will be made publicly available at https://www.movebank.org Search for the study name "Grus canadensis Minnesota" Recommended citation for the data: Wolfson, David; Fieberg, John; and Andersen, David. (2019) Data supporting: Juvenile Sandhill Crane Exhibit Wider Ranging and More Exploratory Movements Than Adults During the Breeding Season. Retrieved from the Data Repository for the University of Minnesota, https://doi.org/10.13020/D6BH7B. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: raw_data.csv B. Filename: r5.rds C. Filename: data_cleaning_and_wrangling.Rmd D. Filename: data_cleaning_and_wrangling.html E. Filename: distance_to_centroid_function.R F. Filename: bootstrap_d2c.Rmd G. Filename: bootstrap_d2c.html H. Filename: revisitation_gam.Rmd I. Filename: revisitation_gam.html J. Filename: residence_time_bootstrap.Rmd K. Filename: residence_time_bootstrap.html L. Filename: nsd_db100.csv M. Filename: nsd_db100_recurse.csv N. Filename: all_files.zip 2. Relationship between files: When there are two files with the same name but a different file format(Rmd and html), the Rmd is a file containing the R code as well as supportive text in a R markdown file, which is a version of markdown intended for use with R scripts. The html is a 'knitted' version of the Rmd file that shows R code, output, and text in three distinct manners in order to step iteratively through an analysis and see the direct result of each section of code. raw_data.csv is a data input loaded into data_cleaning_and_wrangling.Rmd. nsd100.csv and nsd100_with_recursion.csv are generated within that script. The r5.rds object is generated with the revisitation_gam.Rmd script. The file named 'distance_to_centroid_function.R' is primarily code taken from the t-LoCoH package (Lyons et al, 2013). It is sourced in the script 'data_cleaning_and_wrangling.Rmd'. all_files.zip contains a copy of all of the files (A - M) related to this project. Lyons, A. J., Turner, W. C., and W. M. Getz. 2013. Home range plus: a space-time characterization of movement over real landscapes. Movement Ecology. 1(1), 2. -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Cranes were captured in Minnesota, USA, and fitted with GPS/GSM transmitters to monitor their movements. Full details of methodology is available in : Wolfson, D., Fieberg, J., Lawrence, J. S., Cooper, T. R., and Andersen, D. E. 2017. Range overlap between Mid-continent and Eastern sandhill cranes revealed by GPS-tracking. Wildlife Society Bulletin 41: 489-498. 2. Description of computational environment: R version 3.6.0 (2019-04-26) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 10 x64 (build 18362) ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: raw_data.csv ----------------------------------------- Note that because of the size of this file (>1 million rows), you won't be able to load the full dataset into Excel. Column descriptions below. a. location-long = longitude (WGS84) b. location-lat = latitude (WGS84) c. individual-local-identifier = alpha-numeric code and location ID given to each of the 51 individuals deployed with GPS transmitter d. study-local-timestamp = local date and time (format YYYY-MM-DD HH:MM:SS) Central Timezone ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: r5.rds ----------------------------------------- This file is the fitted model object that is produced in the script revisitation_gam.Rmd. It is archived as a standalone object becuase the run time is long to fit the model. ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: nsd_db100.csv ----------------------------------------- Column descriptions below. a. id = alpha-numeric code and location ID for each individual retained in the processed dataset for the analysis b. nsd = the net-squared displacement of each gps location from the origin c. utm_x = The UTM x coordinate (Albers Equal Area projection) d. utm_y = The UTM y coordinate (Albers Equal Area projection) e. Timestamp = the local datetime in the format YYYY-MM-DD HH:MM:SS f. age = a binary age identifier (adult or colt) which reflects whether the crane was caught as an adult or a hatch-year (colt) g. lat = latitude (WGS84) h. long = longitude (WGS84) i. yr = calendar year j. spring_cutoff = the first datetime in a year that the individual's nsd was less than the cutoff threshold (100km) k. fall_cutoff = the last datetime in a year that the individual's nsd was more than the cutoff threshold (100km) l. nsd_cutoff = the cutoff threshold (100km) by which we filtered each crane's locations into "breeding season" or not m. age_yr = a more specific category reflecting the specific age of all non-adults in the sample (i.e. 2nd year, 3rd year, etc) ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: nsd_db100_recurse.csv ----------------------------------------- Column descriptions below. a. id = alpha-numeric code and location ID for each individual retained in the processed dataset for the analysis b. timestamp = the local datetime in the format YYYY-MM-DD HH:MM:SS c. revisits = the number of revisits to the specific buffered area during a single breeding season d. res_time = residence time, defined as the cumulative amount of time spent in the buffered area during a single breeding season e. timeunits = the unit of time used for calculating residence time (hours) f. radius = the radius parameter used (150 meters) for buffering each location with the recurse package g. age_yr = a more specific category reflecting the specific age of all non-adults in the sample (i.e. 2nd year, 3rd year, etc)