This readme.txt file was generated on 202203523 by Jessica Kozarek Recommended citation for the data: Horbach et al. (2023) Relative abundance of Zebra Mussels (Dreissena polymorpha) in various sediment types in White Bear Lake, Minnesota, June 2021. https://doi.org/10.13020/ncdt-j687 ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: Relative abundance of Zebra Mussels (Dreissena polymorpha) in various sediment types in White Bear Lake, Minnesota, June 2021 2. Author Information Principal Investigator Contact Information Name: Daniel J Hornbach Institution: Macalester College Address: Dept. Environmental Studies, 1600 Grand Ave., St. Paul, MN 55105 Email: hornbach@macalester.edu ORCID: 0000-0003-3985-6183 Associate or Co-investigator Contact Information Name: Jessica L Kozarek Institution: St. Anthony Falls Laboratory, University of Minnesota Address: 2 SE 3rd Ave., Minneapolis, MN 55414 Email: jkozarek@umn.edu ORCID: 0000-0001-8913-5646 Associate or Co-investigator Contact Information Name: Naomi S Blinick Institution: University of Minnesota, Twin Cities, Department of Fisheries, Wildlife, and Conservation Biology Address: 1135 Skok Hall, 2003 Buford Circle, St. Paul, MN, 55108 Email: nsblinick@gmail.com ORCID: 0000-0003-0111-2891 Associate or Co-investigator Contact Information Name: Mark C Hove Institution: University of Minnesota Address: 2003 Upper Buford Circle, St. Paul, MN 55108 Email: mark_hove@umn.edu ORCID: 0000-0002-6916-2425 Associate or Co-investigator Contact Information Name: Paul Grams Institution: U.S. Geological Survey Address: 2255 N. Gemini Dr., Flagstaff, AZ 86001 Email: pgrams@usgs.gov ORCID: 0000-0002-0873-0708 Associate or Co-investigator Contact Information Name: Matt Kaplinski Institution: U.S. Geological Survey Address: 2255 N. Gemini Dr., Flagstaff, AZ 86001 Email: mkaplinski@usgs.gov ORCID: 0000-0001-6232-8325 Associate or Co-investigator Contact Information Name: Kelly R MacGregor Institution: Macalester College Address: 1600 Grand Avenue Saint Paul, MN 55105 Email: macgregor@macalester.edu ORCID: 0009-0008-0364-1803 Associate or Co-investigator Contact Information Name: Christopher Milliren Institution: University of Minnesota Address: 2 3rd Ave SE, Minneapolis MN 55414 Email: milli079@umn.edu ORCID: 0009-0001-1813-5777 Associate or Co-investigator Contact Information Name: Andrew Riesgraf Institution: University of Minnesota Address: 2 3rd Ave SE, Minneapolis MN 55414 Email: riesg029@umn.edu ORCID: 0000-0002-4390-4224 3. Date published or finalized for release (YYYYMMDD): 20211231 4. Date of data collection (YYYYMMDD): 20210515 - 20210524 5. Geographic location of data collection (where was data collected?): White Bear Lake in Ramsey County, MN 6. Information about funding sources that supported the collection of the data: Funding was provided by the Minnesota Environmental and Natural Resources Trust Fund as recommended by the Minnesota Aquatic Invasive Species Research Center (MAISRC) and the Legislative-Citizen Commission on Minnesota Resources (LCCMR). 7. Overview of the data (abstract): Relative Zebra Mussel density was surveyed by divers along 21 transect lines, each 20 m in length over different sediment types. Sampling occurred from June 15 to June 24, 2021. Sites were selected using underwater video to include a range of different substrate types and Zebra Mussel coverage to create a training dataset to relate acoustic data to substrate and mussel coverage. SCUBA divers placed 1-m2 quadrats subdivided into 0.25-m2 sections on each side of the transect line. The divers surveyed each 0.25-m2 section noting the percentage of the bottom covered by live and dead Zebra Mussels, submerged mussel coverage style (sparse, patchy, continuous), macrophyte percentage, and substrate type (silt, silt/sand mix, sand, gravel, cobble, and rock/boulder). In addition, divers noted the presence of live Zebra Mussels at the base of any macrophytes in the sampling area. Zebra Mussel coverage was not surveyed on vertical macrophyte surfaces. After recording the data the 1-m2 quadrats were moved one meter along the transect and the data collection process was repeated. This resulted in 40 1-m 2 quadrats and 160 0.25-m 2 sections sampled along each transect. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: CC0 1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/) 2. Links to publications that cite or use the data: Daniel J. Hornbach, Jessica L. Kozarek, Naomi Blinick, Mark C. Hove, Paul Grams, Matt Kaplinski, Kelly R. MacGregor, Chris Milliren & Andrew T. Riesgraf (2023) Distribution pattern of the Zebra Mussel (Dreissena polymorpha) in White Bear Lake, Minnesota: a spatial scale analysis, Journal of Freshwater Ecology, 38:1. https://doi.org/10.1080/02705060.2023.2202700 3. Was data derived from another source? No If yes, list source(s): No 4. Terms of Use: Data Repository for the U of Minnesota (DRUM) By using these files, users agree to the Terms of Use. https://conservancy.umn.edu/pages/drum/policies/#terms-of-use --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: WhiteBearLakeZM2021.csv Short description: Diver survey data from June 2021 in White Bear Lake B. Filename: MetadataWhiteBearLake.pdf Short description: Additional metadata and notes for each transect. 2. Relationship between files: Metadata notes relate to data table by Transect Number -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Data for each quadrat were recorded on waterproof datasheets by SCUBA divers along with any notes. 2. Methods for processing the data: Data were transcribed from divers' waterproof datasheets into spreadsheets. 3. Instrument- or software-specific information needed to interpret the data: text editor and .pdf reader 4. Standards and calibration information, if appropriate: NA 5. Environmental/experimental conditions: Surveyed transects were between approximately 1.5 - 8 m depth. Visibility was high. 6. Describe any quality-assurance procedures performed on the data: Data were entered immediately after collection and any inconsistencies were reviewed by divers. 7. People involved with sample collection, processing, analysis and/or submission: Divers - Mark Hove, Naomi Blinick; Data Entry - Dan Hornbach, Kelly MacGregor; Data submission - Jessica Kozarek, Naomi Blinick ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: WhiteBearLakeZM2021.csv ----------------------------------------- 1. Number of variables:22 2. Number of cases/rows: 3368 3. Missing data codes: NoData No data recorded. 4. Variable List A. Name: Lake Description: Waterbody where data were collected. B. Name: Date Description: Month Day Year C. Name: Diver Description: Diver name that surveyed each quadrat. D. Name: Transect Number Description: Identifier for each transect. MMDDABC E. Name: Transect Side Description: Right or left side of transect line. F. Name: Quadrat # Description: # from 1-20 identifying location of each 1 sq meter quadrat. G. Name: section # Description: Identifier for each 0.25 sq meter subquadrat (1-4) H. Name: Unique ID Description: Identifier combining transect side with quadrat #. I. Name: 2 x 2 ID Description: Identifier for each 2 x 2 m area along transect made of of four 1 sq m quadrats. J. Name: C, P, or S? Description: Recorded distribution of zebra mussels – C-continuous, P-patchy, S-scattered, N-none. C (Continuous) - live or dead Zebra Mussels occurred across the section, or, ≤3 cm between any two live or dead specimens P (Patchy) - live or dead Zebra Mussels occurred in clumps or patches in the section, or, there were 1 or more groups of ≥10 live or dead Zebra Mussels where groups were spaced ≥8 cm from one another. Note if there were only ≈10 Zebra Mussels scattered widely across the section, it was labeled as S(cattered). S (Scattered) - live or dead Zebra Mussels scattered widely across the quadrat where there was usually ≤5 animals/clump and often ≥20 cm between individuals or small groups K. Name: Live ZM (%) Description: Recorded percentage cover of live zebra mussels. If zebra mussels were not on the sediment but were on macrophytes they were recorded as LV (live mussels on vegetation). 0-100% L. Name: Dead ZM (%) Description: Recorded percentage cover of dead zebra mussels. 0-100% M. Name: Macrophyte (%) Description: Recorded percentage cover of macrophyte. 0-100% N. Name: Wood (%) Description: Recorded percentage cover of wood. Sum of substrates (wood, sediment types) = 100 % O. Name: silt (%) Description: Recorded percentage cover of silt. Sum of substrates (wood, sediment types) = 100 % P. Name: sand/silt mix (%) Description: Recorded percentage cover of sand/silt mix. Sum of substrates (wood, sediment types) = 100 % Q. Name: sand (%) Description: Recorded percentage cover of sand. Sum of substrates (wood, sediment types) = 100 % R. Name: gravel (%) Description: Recorded percentage cover of gravel. Sum of substrates (wood, sediment types) = 100 % S. Name: cobble (%) Description: Recorded percentage cover of cobble. Sum of substrates (wood, sediment types) = 100 % T. Name: other (%) Description: Recorded percentage cover of other (see notes). Sum of substrates (wood, sediment types) = 100 % U. Name: rock or boulder (%) Description: Recorded percentage cover of rock or boulder. Sum of substrates (wood, sediment types) = 100 % V. Name: Notes Description: Diver notes about each quadrat. If zebra mussels (zms) were not on the sediment but were on macrophytes they were recorded as LV (live mussels on vegetation).