This RUHL_DATASET_readme.txt file was generated on 2020-03-24 by DARIN RUHL ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: AFOGNAK LAKE SOCKEYE SALMON STOCK MONITORING PROJECT 2. Author Information A. Principal Investigator Name: Darin Ruhl Institution: Alaska Department of Fish and Game Address: 351 Research Ct. Kodiak, Ak 99615 Email: darin.ruh@alaska.gov B. Co-Investigator Name: Steve Schrof Institution: Alaska Department of Fish and Game Address: 351 Research Ct. Kodiak, Ak 99615 Email: steve.schrof@alaska.gov 3. Date of data collection (single date, range, approximate date): 2017-05-31 through 2019-08-11 4. Geographic location of data collection: Afognak Island, Afognak Lake weir located at 58.086632, -152.840012 5. Funding Source: Federally funded through the Alaska Sustainable Salmon Fund, Alaska Department of Fish and Game, under agreement number 44355 -------------------- DATA & FILE OVERVIEW -------------------- 1. File list: Escapement Data.csv - Daily and cumulative escapement through the weir by day ASL Data.csv - Age Sex Length data by week 2. Relationship between files, if important for context: Collection of ASL data taken from daily/weekly escapement of sockeye salmon through the weir 3. Additional related data collected that was not included in the current data package: none 4. If data was derived from another source, list source: n/a 5. Are there multiple versions of the dataset: no -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Two counting gates were placed between panels in the two deepest channels of the river enabling fish to be counted as they pass through the weir. A white flash panel was placed on the substrate beneath each gate to enhance visibility and species identification. Fish were counted by field technicians using hand tally denominators as fish migrated upstream through the gates. The counting gates remained closed until staff were present to count fish through the weir for escapement enumeration or when fish were being collected into the live trap for age, sex, and length sampling. All scales, when possible, were collected from the preferred area of each fish (INPFC 1963). Scales were mounted on scale “gum” cards and returned to the Kodiak Alaska Department of Fish and Game office where impressions were made on cellulose acetate (Clutter and Whitesel 1956). Thompson, S. 1987. Sample size for estimating multinomial proportions. The American Statistician 41(1):42-46. 2. Methods for processing the data: Data entered daily into database and analyzed by project investigator daily and at each seasons end 3. Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers: Microsoft Office 365 ProPlus 4. Standards and calibration information: Age Sex Length sampling methods and protocols estabished and adhered to throughout project period 5. Environmental/experimental conditions: A 27 meter weir was installed perpendicular to the stream flow upstream of the mouth of Afognak River 6. Describe any quality-assurance procedures performed on the data: In-season scale sample quality assurance, scale pattern analysis/ageing, review of completed ASL data 7. People involved with sample collection, processing, analysis and/or submission: Samples collected over each season by 2 Fish and Wildlife technicians and project investigator processed,analyzed, and submitted data on yearly basis -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Escapement Dataset 1. Number of variables: 18 2. Number of cases/rows: 90 3. Variable list, defining any abbreviations, units of measure, codes or symbols used: Daily and cumulative fish passage by species 4. Missing data codes: n/a 5. Specialized formats or other abbreviations used: none ASL Dataset 1. Number of variables: 9 2. Number of cases/rows: 14 3. Variable list, defining any abbreviations, units of measure, codes or symbols used: Sockeye salmon age by week and length summary 4. Missing data codes: n/a 5. Specialized formats or other abbreviations used: Ages were recorded using European notation (Koo 1962), where a decimal separates the number of winters spent in fresh water (after emergence) from the number of winters spent in salt water (e.g., 2.3). The total age of the fish includes an additional year representing the time between egg deposition and emergence of fry. Length measurements were taken from mid eye to tail fork to nearest 1 mm and sex was determined from external morphological characteristics.