This codebook.txt file was generated on 20190513 by wilsonkm ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset Data for: Allopatric populations of the invasive larch casebearer differ in cold tolerance and phenology 2. Author Information Principal Investigator Contact Information Name: Samuel F. Ward Institution: Purdue University Email: ward225@purdue.edu Associate or Co-investigator Contact Information Name: Erika L. Eidson Institution: Idaho Department of Lands Associate or Co-investigator Contact Information Name: Aubree M. Kees Institution: University of Minnesota Associate or Co-investigator Contact Information Name: Robert C. Venette Institution: USDA Forest Service Associate or Co-investigator Contact Information Name: Brian H. Aukema Institution: University of Minnesota Email: BrianAukema@umn.edu 3. Date of data collection: 20180101-20180630 4. Geographic location of data collection: Data collected in Saint Paul, Minnesota on insects from Minnesota, Oregon, Idaho, and Montana. 5. Information about funding sources that supported the collection of the data: -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: CC0 1.0 Universal 2. Links to publications that cite or use the data: Ward, S. F., Eidson, E. L., Kees, A. M., Venette, R. C. and Aukema, B. H. (2019), Allopatric populations of the invasive larch casebearer differ in cold tolerance and phenology. Ecol Entomol. doi:10.1111/een.12773 3. Recommended citation for the data: Ward, Samuel F; Eidson, Erika L; Kees, Aubree M; Venette, Robert C; Aukema, Brian H. (2019). Data for: Allopatric populations of the invasive larch casebearer differ in cold tolerance and phenology. Retrieved from the Data Repository for the University of Minnesota, http://hdl.handle.net/11299/202850. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: cold_tolerance_data.xlsx Short description: Data on lowest temperatures experienced by and supercooling points of third instar larch casebearer larvae from Minnesota, Oregon, Idaho, and Montana. Includes surival data (yes/no). B. Filename: growth_chamber_phenology_data.xlsx Short description: Data on acitvation (presence/absence) and degree-days until activation for third instar larch casebearer larvae from Minnesota, Oregon, Idaho, and Montana. Larvae were exposed to short and long day photoperiods in growth chambers. C. Filename: outside_phenology_data.xlsx Short description: Data on acitvation (presence/absence) and degree-days until activation for third instar larch casebearer larvae from Minnesota, Oregon, Idaho, and Montana. Larvae were exposed to ambient conditions in Saint Paul, MN. ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: cold_tolerance_data.xlsx ----------------------------------------- 1. Number of variables: 10 2. Number of cases/rows: 319 rows 3. Missing data codes: Code/symbol Definition Code/symbol Definition 4. Variable List A. date_trial: date on which insects were assayed B. run: specific cold tolerance assay within date_trial C. lead: thermocouple number for insects within a cold tolerance assay D. survival_date: date (day-month-year) that activation occurred E. survival: 1 = larva activated; 0 = larva never activated F. month: month in which insects were assayed G. state: state containing larch sites from which insects were collected; Minnesota (MN) indicates eastern larch, otherwise all sites were western larch (OR = Oregon, ID = Idaho, MT = Montana) H. low_temp: lowest temperature that a larva was exposed to during a cold tolerance assay I. scp: supercooling point; coldest temperature prior to occurrence of an exotherm; NA = no exotherm recorded J. scp_study: insect was specifically assayed to obtain its supercooling point ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: growth_chamber_phenology_data.xlsx ----------------------------------------- 1. Number of variables: 12 2. Number of cases/rows: 401 rows 3. Missing data codes: Code/symbol Definition Code/symbol Definition 4. Variable List A. state: state containing larch sites from which insects were collected; Minnesota (MN) indicates eastern larch, otherwise 2. all sites were western larch (OR = Oregon, ID = Idaho, MT = Montana) B. start_date: date on which larvae were placed into Petri dishes, into growth chambers, and tracked for activation C. temp: constant temperature (°C) inside growth chambers D. photo: constant photoperiod inside growth chambers (hours of light per 24 hours) E. petri: unique identifier for Petri dish containing larvae F. lcb: integer value for larvae within a Petri dish G. date_active: date on which larval activation was observed H. active: 1 = larva activated; 0 = larva never activated I. length_case_mm: length of larch casebearer needle case in millimeters; measured at longest point J. width_hc_mm: width of larval larch casebearer head capsule in millimeters; measured at widest point K. days_til_active: days from start_date until date_active L. GDD_til_active: degree-days above 5 °C accumulated from start_date until date_active ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: outside_phenology_data.xlsx ----------------------------------------- 1. Number of variables: 8 2. Number of cases/rows: 161 rows 3. Missing data codes: Code/symbol Definition Code/symbol Definition 4. Variable List A. state: state containing larch sites from which insects were collected; Minnesota (MN) indicates eastern larch, otherwise all sites were western larch (OR = Oregon, ID = Idaho, MT = Montana) B. start_date: date on which larvae were placed into Petri dishes and tracked for activation C. petri: unique identifier for Petri dish containing larvae D. lcb: integer value for larvae within a Petri dish E. date_active: date on which larval activation was observed F. active: 1 = larva activated; 0 = larva never activated G. days_til_active: days from 25 April 2018 until date_active H. GDD_til_active: degree-days above 5 °C accumulated from 20 February 2018 until date_active